Food energy is chemical energy that animals (including humans ) derive from their food to sustain their metabolism , including their muscular activity.
82-459: A grape is a fruit , botanically a berry , of the deciduous woody vines of the flowering plant genus Vitis . Grapes are a non- climacteric type of fruit, generally occurring in clusters . The cultivation of grapes began approximately 8,000 years ago, and the fruit has been used as human food throughout its history. Eaten fresh or in dried form (as raisins , currants and sultanas ), grapes also hold cultural significance in many parts of
164-984: A fruit is a ripened ovary or carpel that contains seeds, e.g., an orange, pomegranate, tomato or a pumpkin. A nut is a type of fruit (and not a seed), and a seed is a ripened ovule . In culinary language, a fruit is the sweet- or not sweet- (even sour-) tasting produce of a specific plant (e.g., a peach, pear or lemon); nuts are hard, oily, non-sweet plant produce in shells ( hazelnut , acorn ). Vegetables , so-called, typically are savory or non-sweet produce ( zucchini , lettuce, broccoli, and tomato). but some may be sweet-tasting (sweet potato). Examples of botanically classified fruit that are typically called vegetables include cucumber , pumpkin , and squash (all are cucurbits ); beans , peanuts , and peas (all legumes ); and corn , eggplant , bell pepper (or sweet pepper), and tomato. Many spices are fruits, botanically speaking, including black pepper , chili pepper , cumin and allspice . In contrast, rhubarb
246-564: A risk factor for cardiovascular diseases . Fruit consumption is under preliminary research for the potential to improve nutrition and affect chronic diseases. Regular consumption of fruit is generally associated with reduced risks of several diseases and functional declines associated with aging. For food safety , the CDC recommends proper fruit handling and preparation to reduce the risk of food contamination and foodborne illness . Fresh fruits and vegetables should be carefully selected; at
328-752: A 12th-century document found in the Cairo Geniza . In Iran, a sour grape vinegar is used for making Shirazi salad . Winemaking from red and white grape flesh and skins produces substantial quantities of organic residues, collectively called pomace (also "marc"), which includes crushed skins, seeds, stems, and leaves generally used as compost . Grape pomace – some 10–30% of the total mass of grapes crushed – contains various phytochemicals , such as unfermented sugars, alcohol, polyphenols , tannins , anthocyanins , and numerous other compounds, some of which are harvested and extracted for commercial applications (a process sometimes called "valorization" of
410-450: A blackberry is an aggregate-accessory fruit, and an apple is a simple-accessory fruit. Seedlessness is an important feature of some fruits of commerce. Commercial cultivars of bananas and pineapples are examples of seedless fruits . Some cultivars of citrus fruits (especially grapefruit , mandarin oranges , navel oranges , satsumas ), table grapes , and of watermelons are valued for their seedlessness. In some species, seedlessness
492-424: A certain time, harmful bacteria may grow on them and increase the risk of foodborne illness. Food energy Most animals derive most of their energy from aerobic respiration , namely combining the carbohydrates , fats , and proteins with oxygen from air or dissolved in water . Other smaller components of the diet, such as organic acids , polyols , and ethanol (drinking alcohol) may contribute to
574-415: A complex dish or meal can be approximated by adding the energy contents of its components. The first determinations of the energy content of food were made by burning a dried sample in a bomb calorimeter and measuring the temperature change in the water surrounding the apparatus, a method known as direct calorimetry . However, the direct calorimetric method generally overestimates the actual energy that
656-468: A day for women and two for men, may confer health benefits. Alcohol itself may have protective effects on the cardiovascular system. The consumption of grapes and raisins presents a potential health threat to dogs. Their toxicity to dogs can cause the animal to develop acute kidney failure (the sudden development of kidney failure) with anuria (a lack of urine production) and may be fatal. Christians have traditionally used wine during worship services as
738-679: A dominant position of wine-making in human culture dates from 8,000 years ago in Georgia . The oldest known winery, the Areni-1 winery , was found in Armenia and dated back to around 4000 BC. By the 9th century AD, the city of Shiraz was known to produce some of the finest wines in the Middle East. Thus it has been proposed that Syrah red wine is named after Shiraz , a city in Persia where
820-522: A head, is produced first. After fertilization , each flower in the cluster develops into a drupe; as the drupes expand, they develop as a connate organ, merging into a multiple fleshy fruit called a syncarp . Progressive stages of multiple flowering and fruit development can be observed on a single branch of the Indian mulberry, or noni . During the sequence of development, a progression of second, third, and more inflorescences are initiated in turn at
902-439: A manufacturer of rowing equipment shows calories released from "burning" food as four times the actual mechanical work, plus 1,300 kJ (300 kcal) per hour, which amounts to about 20% efficiency at 250 watts of mechanical output. It can take up to 20 hours of little physical output (e.g., walking) to "burn off" 17,000 kJ (4,000 kcal) more than a body would otherwise consume. For reference, each kilogram of body fat
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#1732765538500984-511: A means of remembering the blood of Jesus Christ which was shed for the remission of sins . Christians who oppose the partaking of alcoholic beverages sometimes use grape juice as the "cup" or "wine" in the Lord's Supper . The Catholic Church continues to use wine in the celebration of the Eucharist because it is part of the tradition passed down through the ages starting with Jesus Christ at
1066-585: A moderate amount of vitamin K (14% of the Daily Value ), with no other micronutrients in significant amounts. Most domesticated grapes come from cultivars of Vitis vinifera , a grapevine native to the Mediterranean and Central Asia. Minor amounts of fruit and wine come from American and Asian species such as: According to the Food and Agriculture Organization (FAO), 75,866 square kilometers of
1148-535: A multitude of products such as jams, juices, vinegars and oils. Commercially cultivated grapes are classified as either table or wine grapes. These categories are based on their intended method of consumption: grapes that are eaten raw (table grapes), or grapes that are used to make wine (wine grapes). Table grape cultivars normally have large, seedless fruit and thin skins. Wine grapes are smaller (in comparison to table grapes), usually contains seeds, and have thicker skins (a desirable characteristic in making wine). Most of
1230-644: A new plant some distance away from the parent. Other fruits have evolved flattened and elongated wings or helicopter-like blades, e.g., elm , maple , and tuliptree . This mechanism increases dispersal distance away from the parent via wind. Other wind-dispersed fruit have tiny " parachutes ", e.g., dandelion , milkweed , salsify . Coconut fruits can float thousands of miles in the ocean, thereby spreading their seeds. Other fruits that can disperse via water are nipa palm and screw pine . Some fruits have evolved propulsive mechanisms that fling seeds substantial distances – perhaps up to 100 m (330 ft) in
1312-680: A number of different forms from a wide range of families, including carrot , parsnip , parsley , cumin . An aggregate fruit is also called an aggregation, or etaerio ; it develops from a single flower that presents numerous simple pistils . Each pistil contains one carpel ; together, they form a fruitlet. The ultimate (fruiting) development of the aggregation of pistils is called an aggregate fruit , etaerio fruit , or simply an etaerio . Different types of aggregate fruits can produce different etaerios, such as achenes, drupelets, follicles, and berries. Some other broadly recognized species and their etaerios (or aggregations) are: The pistils of
1394-442: A prominent pointed terminal projection is said to be beaked . A fruit results from the fertilizing and maturing of one or more flowers. The gynoecium , which contains the stigma-style-ovary system, is centered in the flower-head, and it forms all or part of the fruit. Inside the ovary(ies) are one or more ovules . Here begins a complex sequence called double fertilization : a female gametophyte produces an egg cell for
1476-451: A relatively high phenolic content among dark grapes. In muscadine skins, ellagic acid , myricetin , quercetin , kaempferol , and trans-resveratrol are major phenolics. The flavonols syringetin , syringetin 3-O-galactoside, laricitrin and laricitrin 3-O-galactoside are also found in purple grape but absent in white grape. Muscadine grape seeds contain about twice the total polyphenol content of skins. Grape seed oil from crushed seeds
1558-631: A seeded variety as the female parent or rescue embryos early in development using tissue culture techniques. There are several sources of the seedlessness trait, and essentially all commercial cultivators get it from one of three sources: Thompson Seedless , Russian Seedless , and Black Monukka , all being cultivars of Vitis vinifera . There are currently more than a dozen varieties of seedless grapes. Several, such as Einset Seedless, Benjamin Gunnels's Prime seedless grapes, Reliance, and Venus, have been specifically cultivated for hardiness and quality in
1640-443: A similar table. Other components of the human diet are either noncaloric, or are usually consumed in such small amounts that they can be neglected. The food energy actually obtained by respiration is used by the human body for a wide range of purposes, including basal metabolism of various organs and tissues, maintaining the internal body temperature , and exerting muscular force to maintain posture and produce motion. About 20%
1722-404: A single flower with numerous pistils typically produces an aggregate fruit ; and the merging of several flowers, or a 'multiple' of flowers, results in a 'multiple' fruit. A simple fruit is further classified as either dry or fleshy. To distribute their seeds, dry fruits may split open and discharge their seeds to the winds, which is called dehiscence . Or the distribution process may rely upon
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#17327655385001804-458: A team of archaeologists concluded that Chalcolithic wine jars discovered in Cyprus in the 1930s dated back to 3500 BC, making them the oldest of their kind in the world. Commandaria , a sweet dessert wine from Cyprus, is the oldest manufactured wine in the world with origins as far back as 2000 BC. In North America, native grapes belonging to various species of the genus Vitis proliferate in
1886-701: Is believed that the most widely planted variety is Sultana , also known as Thompson Seedless, with at least 3,600 km (880,000 acres) dedicated to it. The second most common variety is Airén . Other popular varieties include Cabernet Sauvignon , Sauvignon blanc , Cabernet Franc , Merlot , Grenache , Tempranillo , Riesling , and Chardonnay . Commercially cultivated grapes can usually be classified as either table or wine grapes, based on their intended method of consumption: eaten raw (table grapes) or used to make wine (wine grapes). The sweetness of grapes depends on when they are harvested, as they do not continue to ripen once picked. While almost all of them belong to
1968-473: Is equivalent to walking around 2.5 to 5 km ( 1 + 1 ⁄ 2 to 3 mi) per day in addition to the activities of sedentary living. These estimates are for a "reference woman" who is 1.63 m (5 ft 4 in) tall and weighs 57 kg (126 lb) and a "reference man" who is 1.78 m (5 ft 10 in) tall and weighs 70 kg (154 lb). Because caloric requirements vary by height, activity, age, pregnancy status, and other factors,
2050-417: Is often called a fruit when used in making pies , but the edible produce of rhubarb is actually the leaf stalk or petiole of the plant. Edible gymnosperm seeds are often given fruit names, e.g., ginkgo nuts and pine nuts . Botanically, a cereal grain, such as corn , rice , or wheat is a kind of fruit (termed a caryopsis ). However, the fruit wall is thin and fused to the seed coat, so almost all
2132-813: Is pressed for olive oil and similar processing is applied to other oil-bearing fruits and vegetables. Some fruits are available all year round, while others (such as blackberries and apricots in the UK) are subject to seasonal availability. Fruits are also used for socializing and gift-giving in the form of fruit baskets and fruit bouquets . Typically, many botanical fruits – "vegetables" in culinary parlance – (including tomato, green beans, leaf greens, bell pepper, cucumber, eggplant, okra, pumpkin, squash, zucchini) are bought and sold daily in fresh produce markets and greengroceries and carried back to kitchens, at home or restaurant, for preparation of meals. All fruits benefit from proper post-harvest care, and in many fruits,
2214-517: Is roughly equivalent to 32,300 kilojoules of food energy (i.e., 3,500 kilocalories per pound or 7,700 kilocalories per kilogram). Many countries and health organizations have published recommendations for healthy levels of daily intake of food energy. For example, the United States government estimates 8,400 and 10,900 kJ (2,000 and 2,600 kcal) needed for women and men, respectively, between ages 26 and 45, whose total physical activity
2296-435: Is the means for seed dispersal for the one group and nutrition for the other; humans, and many other animals, have become dependent on fruits as a source of food. Consequently, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate ) have acquired extensive cultural and symbolic meanings. In common language and culinary usage, fruit normally means
2378-522: Is the result of parthenocarpy , where fruits set without fertilization. Parthenocarpic fruit-set may (or may not) require pollination, but most seedless citrus fruits require a stimulus from pollination to produce fruit. Seedless bananas and grapes are triploids , and seedlessness results from the abortion of the embryonic plant that is produced by fertilization, a phenomenon known as stenospermocarpy , which requires normal pollination and fertilization. Variations in fruit structures largely depend on
2460-460: Is the result of about 40% efficiency of generating ATP from the respiration of food, losses in converting energy from ATP into mechanical work inside the muscle, and mechanical losses inside the body. The latter two losses are dependent on the type of exercise and the type of muscle fibers being used (fast-twitch or slow-twitch). For an overall efficiency of 20%, one watt of mechanical power is equivalent to 18 kJ/h (4.3 kcal/h). For example,
2542-447: Is used for brain metabolism. The conversion efficiency of energy from respiration into muscular (physical) power depends on the type of food and on the type of physical energy usage (e.g., which muscles are used, whether the muscle is used aerobically or anaerobically ). In general, the efficiency of muscles is rather low: only 18 to 26% of the energy available from respiration is converted into mechanical energy. This low efficiency
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2624-687: Is used in cosmeceuticals and skincare products. Grape seed oil, including tocopherols ( vitamin E ) and high contents of phytosterols and polyunsaturated fatty acids such as linoleic acid , oleic acid , and alpha-linolenic acid . Resveratrol, a stilbene compound, is found in widely varying amounts among grape varieties, primarily in their skins and seeds. Muscadine grapes have about one hundred times higher concentration of stilbenes than pulp. Fresh grape skin contains about 50 to 100 micrograms of resveratrol per gram. Comparing diets among Western countries, researchers have discovered that, although French people tend to eat higher levels of animal fat,
2706-505: The pericarp (fruit wall) is fleshy at maturity are termed fleshy simple fruits . Types of fleshy simple fruits, (with examples) include: Berries are a type of simple fleshy fruit that issue from a single ovary. (The ovary itself may be compound, with several carpels.) The botanical term true berry includes grapes, currants, cucumbers, eggplants (aubergines), tomatoes, chili peppers, and bananas, but excludes certain fruits that are called "-berry" by culinary custom or by common usage of
2788-547: The Last Supper , where Catholics believe the consecrated bread and wine become the body and blood of Jesus Christ, a dogma known as transubstantiation . Wine is used (not grape juice) both due to its strong Scriptural roots, and also to follow the tradition set by the early Christian Church. The Code of Canon Law of the Catholic Church (1983), Canon 924 says that the wine used must be natural, made from grapes of
2870-467: The metric (SI) unit of energy, the joule (J), and its multiple the kilojoule (kJ); or in the traditional unit of heat energy, the calorie (cal). In nutritional contexts, the latter is often (especially in US) the "large" variant of the unit, also written "Calorie" (with symbol Cal, both with capital "C") or "kilocalorie" (kcal), and equivalent to 4184 J or 4.184 kJ. Thus, for example, fats and ethanol have
2952-603: The modes of dispersal applied to their seeds. Dispersal is achieved by wind or water, by explosive dehiscence , and by interactions with animals. Some fruits present their outer skins or shells coated with spikes or hooked burrs; these evolved either to deter would-be foragers from feeding on them or to serve to attach themselves to the hair, feathers, legs, or clothing of animals, thereby using them as dispersal agents. These plants are termed zoochorous ; common examples include cocklebur , unicorn plant , and beggarticks (or Spanish needle) . By developments of mutual evolution,
3034-434: The raspberry are called drupelets because each pistil is like a small drupe attached to the receptacle. In some bramble fruits, such as blackberry , the receptacle, an accessory part, elongates and then develops as part of the fruit, making the blackberry an aggregate-accessory fruit. The strawberry is also an aggregate-accessory fruit, of which the seeds are contained in the achenes . Notably in all these examples,
3116-465: The wine industry, grape juice that contains 7–23% of pulp, skins, stems and seeds is often referred to as " must ". In North America, the most common grape juice is purple and made from Concord grapes , while white grape juice is commonly made from Niagara grapes , both of which are varieties of native American grapes, a different species from European wine grapes. In California, Sultana (known there as Thompson Seedless) grapes are sometimes diverted from
3198-412: The (deposited) pollen through the stigma down the style into the ovary to the ovule. Two sperm are transferred from the pollen to a megagametophyte. Within the megagametophyte, one sperm unites with the egg, forming a zygote , while the second sperm enters the central cell forming the endosperm mother cell, which completes the double fertilization process. Later, the zygote will give rise to the embryo of
3280-608: The EU regulations and UK regulations, are: (1) Some polyols, like erythritol , are not digested and should be excluded from the count. (2) This entry exists in the EU regulations of 2008, but not in the UK regulations, according to which fibre shall not be counted. More detailed tables for specific foods have been published by many organizations, such as the United Nations Food and Agriculture Organization also has published
3362-511: The EU to use the term "dried vine fruit" in official documents. A raisin is any dried grape. While raisin is a French loanword , the word in French refers to the fresh fruit; grappe (from which the English grape is derived) refers to the bunch (as in une grappe de raisins ). A raisin in French is called raisin sec ("dry grape"). A currant is a dried Zante Black Corinth grape,
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3444-620: The USDA created the DRI Calculator for Healthcare Professionals in order to determine individual caloric needs. According to the Food and Agriculture Organization of the United Nations , the average minimum energy requirement per person per day is about 7,500 kJ (1,800 kcal). Although the U.S. has changed over time with a growth in population and processed foods or food in general, Americans today have available roughly
3526-538: The United States), but the word is now applied to raisins made from either white grapes or red grapes that are bleached to resemble the traditional sultana. Grape juice is obtained from crushing and blending grapes into a liquid. The juice is often sold in stores or fermented and made into wine , brandy , or vinegar . Grape juice that has been pasteurized, removing any naturally occurring yeast, will not ferment if kept sterile, and thus contains no alcohol. In
3608-446: The aroma in wine is from the skin. Wine grapes tend to have a high sugar content. They are harvested at peak sugar levels (approximately 24% sugar by weight.) In comparison, commercially produced "100% grape juice" made from table grapes are normally around 15% sugar by weight. In most of Europe and North America, dried grapes are referred to as "raisins" or the local equivalent. In the UK, three different varieties are recognized, forcing
3690-408: The attachment of other floral parts – there are parts (including petals, sepals, and stamens) that fuse with the ovary and ripen with it. For such a case, when floral parts other than the ovary form a significant part of the fruit that develops, it is called an accessory fruit . Examples of accessory fruits include apple, rose hip, strawberry, and pineapple. Because several parts of the flower besides
3772-541: The average daily energy intake of 8,800 kJ (2,100 kcal). The minimum food energy intake is also higher in cold environments. Increased mental activity has been linked with moderately increased brain energy consumption . Many governments require food manufacturers to label the energy content of their products, to help consumers control their energy intake. To facilitate evaluation by consumers, food energy values (and other nutritional properties) in package labels or tables are often quoted for convenient amounts of
3854-450: The body can obtain from the food, because it also counts the energy contents of dietary fiber and other indigestible components, and does not allow for partial absorption and/or incomplete metabolism of certain substances. For this reason, today the energy content of food is instead obtained indirectly, by using chemical analysis to determine the amount of each digestible dietary component (such as protein, carbohydrates, and fats), and adding
3936-429: The body. For example, leucine plays an important role in the regulation of protein metabolism and suppresses an individual's appetite. Small amounts of essential fatty acids , constituents of some fats that cannot be synthesized by the human body, are used (and necessary) for other biochemical processes. The approximate food energy contents of various human diet components, to be used in package labeling according to
4018-890: The case of the sandbox tree – via explosive dehiscence or other such mechanisms (see impatiens and squirting cucumber ). A cornucopia of fruits – fleshy (simple) fruits from apples to berries to watermelon; dry (simple) fruits including beans and rice and coconuts; aggregate fruits including strawberries, raspberries, blackberries, pawpaw; and multiple fruits such as pineapple, fig, mulberries – are commercially valuable as human food. They are eaten both fresh and as jams, marmalade and other fruit preserves . They are used extensively in manufactured and processed foods (cakes, cookies, baked goods, flavorings, ice cream, yogurt, canned vegetables, frozen vegetables and meals) and beverages such as fruit juices and alcoholic beverages (brandy, fruit beer , wine). Spices like vanilla, black pepper, paprika, and allspice are derived from berries. Olive fruit
4100-490: The decay and degradation of the fruit to expose the seeds; or it may rely upon the eating of fruit and excreting of seeds by frugivores – both are called indehiscence . Fleshy fruits do not split open, but they also are indehiscent and they may also rely on frugivores for distribution of their seeds. Typically, the entire outer layer of the ovary wall ripens into a potentially edible pericarp . Types of dry simple fruits, (with examples) include: Fruits in which part or all of
4182-493: The dry weight of food. Ruminants can extract food energy from the respiration of cellulose because of bacteria in their rumens that decompose it into digestible carbohydrates. Other minor components of the human diet that contribute to its energy content are organic acids such as citric and tartaric , and polyols such as glycerol , xylitol , inositol , and sorbitol . Some nutrients have regulatory roles affected by cell signaling , in addition to providing energy for
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#17327655385004264-401: The edible grain-fruit is actually a seed. The outer layer, often edible, of most fruits is called the pericarp . Typically formed from the ovary, it surrounds the seeds; in some species, however, other structural tissues contribute to or form the edible portion. The pericarp may be described in three layers from outer to inner, i.e., the epicarp , mesocarp and endocarp . Fruit that bears
4346-409: The energy input. Some diet components that provide little or no food energy, such as water , minerals , vitamins , cholesterol , and fiber , may still be necessary to health and survival for other reasons. Some organisms have instead anaerobic respiration , which extracts energy from food by reactions that do not require oxygen. The energy contents of a given mass of food is usually expressed in
4428-477: The fleshy produce of fruits typically appeals to hungry animals, such that the seeds contained within are taken in, carried away, and later deposited (i.e., defecated ) at a distance from the parent plant. Likewise, the nutritious, oily kernels of nuts typically motivate birds and squirrels to hoard them, burying them in soil to retrieve later during the winter of scarcity; thereby, uneaten seeds are sown effectively under natural conditions to germinate and grow
4510-429: The fruit develops from a single flower, with numerous pistils. A multiple fruit is formed from a cluster of flowers, (a 'multiple' of flowers) – also called an inflorescence . Each ('smallish') flower produces a single fruitlet, which, as all develop, all merge into one mass of fruit. Examples include pineapple , fig , mulberry , Osage orange , and breadfruit . An inflorescence (a cluster) of white flowers, called
4592-416: The fruits develop, but they are not evolutionarily relevant as diverse plant taxa may be in the same group. While the section of a fungus that produces spores is called a fruiting body, fungi are members of the fungi kingdom and not of the plant kingdom . Simple fruits are the result of the ripening-to-fruit of a simple or compound ovary in a single flower with a single pistil . In contrast,
4674-519: The grape was used to make Shirazi wine . Ancient Egyptian hieroglyphics record the cultivation of purple grapes, and history attests to the ancient Greeks , Cypriots , Phoenicians , and Romans growing purple grapes both for eating and wine production. The growing of grapes would later spread to other regions in Europe, as well as North Africa, and eventually in North America . In 2005,
4756-871: The greatest amount of food energy per unit mass, 37 and 29 kJ/g (9 and 7 kcal/g), respectively. Proteins and most carbohydrates have about 17 kJ/g (4 kcal/g), though there are differences between different kinds. For example, the values for glucose, sucrose, and starch are 15.57, 16.48 and 17.48 kilojoules per gram (3.72, 3.94 and 4.18 kcal/g) respectively. The differing energy density of foods (fat, alcohols, carbohydrates and proteins) lies mainly in their varying proportions of carbon, hydrogen, and oxygen atoms. Carbohydrates that are not easily absorbed, such as fibre, or lactose in lactose-intolerant individuals , contribute less food energy. Polyols (including sugar alcohols ) and organic acids contribute 10 kJ/g (2.4 kcal/g) and 13 kJ/g (3.1 kcal/g) respectively. The energy contents of
4838-419: The head of the branch or stem. Fruits may incorporate tissues derived from other floral parts besides the ovary, including the receptacle, hypanthium, petals, or sepals. Accessory fruits occur in all three classes of fruit development – simple, aggregate, and multiple. Accessory fruits are frequently designated by the hyphenated term showing both characters. For example, a pineapple is a multiple-accessory fruit,
4920-614: The incidence of heart disease remains low in France. This phenomenon has been termed the French paradox and is thought to occur due to the protective benefits of regularly consuming red wine, among other dietary practices. Alcohol consumption in moderation may be cardioprotective by its minor anticoagulant effect and vasodilation . Although adoption of wine consumption is generally not recommended by health authorities, some research indicates moderate consumption, such as one glass of red wine
5002-496: The latter term meaning the fleshy part is derived not from the plant's ovaries but from the receptacle that holds the ovaries . Numerous dry achenes are attached to the outside of the fruit-flesh; they appear to be seeds but each is actually an ovary of a flower, with a seed inside. Schizocarps are dry fruits, though some appear to be fleshy. They originate from syncarpous ovaries but do not actually dehisce ; rather, they split into segments with one or more seeds. They include
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#17327655385005084-469: The name being a corruption of the French raisin de Corinthe ( Corinth grape). The names of the black and red currant, now more usually blackcurrant and redcurrant , two berries unrelated to grapes, are derived from this use. Some other fruits of similar appearance are also so named, for example, Australian currant, native currant, Indian currant. A sultana was originally a raisin made from Sultana grapes of Turkish origin (known as Thompson Seedless in
5166-445: The number of fertilized ovules. The pericarp typically is differentiated into two or three distinct layers; these are called the exocarp (outer layer, also called epicarp), mesocarp (middle layer), and endocarp (inner layer). In some fruits, the sepals , petals , stamens or the style of the flower fall away as the fleshy fruit ripens. However, for simple fruits derived from an inferior ovary – i.e., one that lies below
5248-437: The ovary may contribute to the structure of a fruit, it is important to understand how a particular fruit forms. There are three general modes of fruit development: Consistent with the three modes of fruit development, plant scientists have classified fruits into three main groups: simple fruits, aggregate fruits, and multiple (or composite) fruits. The groupings reflect how the ovary and other flower organs are arranged and how
5330-614: The plant hormone ethylene causes ripening . Therefore, maintaining most fruits in an efficient cold chain is optimal for post-harvest storage, with the aim of extending and ensuring shelf life. Various culinary fruits provide significant amounts of fiber and water, and many are generally high in vitamin C . An overview of numerous studies showed that fruits (e.g., whole apples or whole oranges) are satisfying (filling) by simply eating and chewing them. The dietary fiber consumed in eating fruit promotes satiety , and may help to control body weight and aid reduction of blood cholesterol ,
5412-570: The pomace). Anthocyanins tend to be the main polyphenolics in purple grapes, whereas flavan-3-ols (i.e. catechins ) are the more abundant class of polyphenols in white varieties. Total phenolic content is higher in purple varieties due almost entirely to anthocyanin density in purple grape skin compared to absence of anthocyanins in white grape skin. Phenolic content of grape skin varies with cultivar , soil composition, climate, geographic origin, and cultivation practices or exposure to diseases, such as fungal infections. Muscadine grapes contain
5494-630: The purple grape. Mutations in two regulatory genes of white grapes turn off production of anthocyanins , which are responsible for the color of purple grapes. Anthocyanins and other pigment chemicals of the larger family of polyphenols in purple grapes are responsible for the varying shades of purple in red wines. Grapes are typically an ellipsoid shape resembling a prolate spheroid . Raw grapes are 81% water, 18% carbohydrates , 1% protein , and have negligible fat (table). A 100-gram ( 3 + 1 ⁄ 2 -ounce) reference amount of raw grapes supplies 288 kilojoules (69 kilocalories) of food energy and
5576-401: The purpose of fertilization. (A female gametophyte is called a megagametophyte , and also called the embryo sac .) After double fertilization, the ovules will become seeds. Ovules are fertilized in a process that starts with pollination , which is the movement of pollen from the stamens to the stigma-style-ovary system within the flower-head. After pollination, a pollen tube grows from
5658-496: The raisin or table market to produce white juice. Husrum , also known as verjuice , is a type of vinegar made from sour grapes in the Middle East. It is produced by crushing unripened grapes, collecting and salting the juice, simmering it to remove foam, and then storing it with a layer of olive oil to prevent contamination and oxidation. It is then used as an acidic ingredient in salads and stuffed vegetables. Unripened husrum grapes sent from Ashkelon to Egypt are mentioned in
5740-449: The relatively cold climates of northeastern United States and southern Ontario . An offset to the improved eating quality of seedlessness is the loss of potential health benefits provided by the enriched phytochemical content of grape seeds (see Health claims , below). Grapes are eaten raw, dried (as raisins, currants and sultanas), or cooked. Also, depending on grape cultivar, grapes are used in winemaking. Grapes can be processed into
5822-853: The respective food energy contents, previously obtained by measurement of metabolic heat released by the body. In particular, the fibre content is excluded. This method is known as the Modified Atwater system, after Wilbur Atwater who pioneered these measurements in the late 19th century. The system was later improved by Annabel Merrill and Bernice Watt of the USDA , who derived a system whereby specific calorie conversion factors for different foods were proposed. The typical human diet consists chiefly of carbohydrates, fats, proteins, water, ethanol, and indigestible components such as bones , seeds , and fibre (mostly cellulose ). Carbohydrates, fats, and proteins typically comprise ninety percent of
5904-425: The same level of calories as the older generation. [1] Older people and those with sedentary lifestyles require less energy; children and physically active people require more. Recognizing these factors, Australia's National Health and Medical Research Council recommends different daily energy intakes for each age and gender group. Notwithstanding, nutrition labels on Australian food products typically recommend
5986-461: The same species, Vitis vinifera , table and wine grapes have significant differences, brought about through selective breeding . Table grape cultivars tend to have large, seedless fruit (see below) with relatively thin skin. Wine grapes are smaller, usually seeded, and have relatively thick skins (a desirable characteristic in winemaking, since much of the aroma in wine comes from the skin). Wine grapes also tend to be very sweet: they are harvested at
6068-401: The seed, and the endosperm mother cell will give rise to endosperm , a nutritive tissue used by the embryo. As the ovules develop into seeds, the ovary begins to ripen and the ovary wall, the pericarp , may become fleshy (as in berries or drupes ), or it may form a hard outer covering (as in nuts). In some multi-seeded fruits, the extent to which a fleshy structure develops is proportional to
6150-504: The seed-associated fleshy structures (or produce) of plants that typically are sweet (or sour) and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. In botanical usage, the term fruit also includes many structures that are not commonly called as such in everyday language, such as nuts, bean pods, corn kernels, tomatoes, and wheat grains. Many common language terms used for fruit and seeds differ from botanical classifications. For example, in botany,
6232-730: The store, they should not be damaged or bruised; and precut pieces should be refrigerated or surrounded by ice. All fruits and vegetables should be rinsed before eating. This recommendation also applies to produce with rinds or skins that are not eaten. It should be done just before preparing or eating to avoid premature spoilage. Fruits and vegetables should be kept separate from raw foods like meat, poultry, and seafood, as well as from utensils that have come in contact with raw foods. Fruits and vegetables that are not going to be cooked should be thrown away if they have touched raw meat, poultry, seafood, or eggs. All cut, peeled, or cooked fruits and vegetables should be refrigerated within two hours. After
6314-417: The term – such as strawberries and raspberries. Berries may be formed from one or more carpels (i.e., from the simple or compound ovary) from the same, single flower. Seeds typically are embedded in the fleshy interior of the ovary. Examples include: The strawberry, regardless of its appearance, is classified as a dry, not a fleshy fruit. Botanically, it is not a berry ; it is an aggregate-accessory fruit,
6396-442: The time when their juice is approximately 24% sugar by weight. By comparison, commercially produced "100% grape juice", made from table grapes, is usually around 15% sugar by weight. Seedless cultivars now make up the overwhelming majority of table grape plantings. Because grapevines are vegetatively propagated by cuttings, the lack of seeds does not present a problem for reproduction. It is an issue for breeders, who must either use
6478-409: The vine, and not corrupt. Fruit In botany , a fruit is the seed -bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering (see Fruit anatomy ). Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propagated using the movements of humans and other animals in a symbiotic relationship that
6560-655: The wild across the continent and were a part of the diet of many Native Americans , but they were considered by early European colonists to be unsuitable for wine. In the 19th century, Ephraim Bull of Concord, Massachusetts , cultivated seeds from wild Vitis labrusca vines to create the Concord grape , which would become an important agricultural crop in the United States. Grapes are a type of fruit that grow in clusters of 15 to 300 and can be crimson, black, dark blue, yellow, green, orange, and pink. "White" grapes are actually green in color and are evolutionarily derived from
6642-434: The world are dedicated to grapes. Approximately 71% of world grape production is used for wine, 27% as fresh fruit, and 2% as dried fruit . A portion of grape production goes to producing grape juice to be reconstituted for fruits canned "with no added sugar " and "100% natural". The area dedicated to vineyards is increasing by about 2% per year. There are no reliable statistics that break down grape production by variety. It
6724-480: The world, particularly for their role in winemaking . Other grape-derived products include various types of jam , juice , vinegar and oil. The Middle East is generally described as the homeland of grapes and the cultivation of this plant began there 6,000–8,000 years ago. Yeast , one of the earliest domesticated microorganisms , occurs naturally on the skins of grapes, leading to the discovery of alcoholic drinks such as wine. The earliest archeological evidence for
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