Banana

For other uses, see Banana (disambiguation).

Banana
Banana plant
Scientific classification
Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Liliopsida
Order:	Zingiberales
Family:	Musaceae
Genus:	Musa
Species
Hybrid origin; see text

Banana is the common name used for herbaceous, cultigenic plants in the genus Musa, which, because of their size and structure, are often mistaken for trees. Bananas are cultivated for their fruit which bear the same name, and to a lesser extent for the production of fibre and as ornamental plants. Bananas are of the family Musaceae. Globally, bananas rank fourth after rice, wheat and maize in human consumption; they are grown in 130 countries worldwide, more than any other fruit crop. Bananas are native to tropical southeastern Asia but are widely cultivated in tropical regions. In popular culture and commerce, "banana" usually refers to the soft, sweet "dessert" bananas that are usually eaten raw. The bananas from a group of cultivars with firmer, starchier fruit, generally used in cooking rather than eaten raw, are typically known as plantains. Bananas may also be dried and ground into banana flour.

The main or upright growth is called a pseudostem, which when mature, will obtain a height of 2–8 m (varies between different cultivars), with leaves of up to 3.5 m in length. Each pseudostem produces a single bunch of bananas, before dying and being replaced by a new pseudostem. The base of the plant is a rhizome (known as a corm). Corms are perennial, with a productive lifespan of 15 years or more.

The term banana is applied to both the plant and its elongated fruit (technically a false berry) which grow in hanging clusters, with up to 20 fruit to a tier (called a hand), and 5-20 tiers to a bunch. The total of the hanging clusters is known as a bunch, or commercially as a "banana stem", and can weigh from 30–50 kg. The fruit averages 125 g, of which approximately 75% is water and 25% dry matter content. Bananas are a valuable source of Vitamin A, Vitamin B6, Vitamin C, and potassium.

Although the wild species have fruits with numerous large, hard seeds, virtually all culinary bananas have seedless fruits. Bananas are classified either as dessert bananas (meaning they are yellow and fully ripe when eaten) or as green cooking bananas. Almost all export bananas are of the dessert types; however, only about 10-15% of all production is for export, with the U.S. and EU being the dominant buyers.

History

Banana bunch

The domestication of bananas took place in southeastern Asia. Many species of wild bananas still occur in New Guinea, Malaysia, Indonesia and the Philippines. Recent archaeological and palaeoenvironmental evidence at Kuk Swamp in the Western Highlands Province of Papua New Guinea suggests that banana cultivation there goes back to at least 5000 BC, and possibly to 8000 BC. This would make the New Guinean highlands the place where bananas were first domesticated. It is likely that other species of wild bananas were later also domesticated elsewhere in southeastern Asia.

The banana is mentioned for the first time in written history in Buddhist texts in 600 BC. Alexander the Great discovered the taste of the banana in the valleys of India in 327 BC. The existence of an organized banana plantation could be found in China in 200 AD. In 650 AD, Islamic conquerors brought the banana to Palestine. Arab merchants eventually spread bananas over much of Africa. The word banana is of West African origin, and passed into English via Spanish or Portuguese.

In 15th and 16th century, Portuguese colonists started banana plantations in the Atlantic Islands, Brazil, and western Africa. As late as the Victorian Era, bananas were not widely known in Europe, although they were available via merchant trade. Jules Verne references bananas with detailed descriptions so as not to confuse readers in his book Around the World in Eighty Days (1872).

Properties

'Cavendish' bananas

Banana (edible parts)

Nutritional value per 100 g (3.5 oz)
Energy	371 kJ (89 kcal)
Carbohydrates	23 g
Sugars	12 g
Dietary fibre	2.6 g
Fat	0.3 g
Protein	1 g
Vitamins and minerals Vitamins Quantity %DV† Vitamin C 10% 9 mg Minerals Quantity %DV† Potassium 12% 358 mg
†Percentages estimated using US recommendations for adults, except for potassium, which is estimated based on expert recommendation from the National Academies.

Bananas come in a variety of sizes and colours; most cultivars are yellow when ripe but some are red or purple-ish. The ripe fruit is easily peeled and eaten raw or cooked. Depending upon cultivar and ripeness, the flesh can be starchy to sweet, and firm to mushy. Unripe or "green" bananas and plantains are used in cooking and are the staple starch of many tropical populations.

Most production for local sale is of green cooking bananas and plantains, as ripe dessert bananas are easily damaged while being transported to market. Even when only transported within their country of origin, ripe bananas suffer a high rate of damage and loss.

The commercial dessert cultivars most commonly eaten in temperate countries (species Musa acuminata or the hybrid Musa × paradisiaca, a cultigen) are imported in large quantities from the tropics. They are popular in part because being a non-seasonal crop they are available fresh year-round. In global commerce, by far the most important of these banana cultivars is 'Cavendish', which accounts for the vast bulk of bananas exported from the tropics. The Cavendish gained popularity in the 1950s after the previously mass produced cultivar, Gros Michel, was being destroyed by Panama disease, a fungus which attacks the roots of the banana plant.

It is common for fruit exports to be dominated by a single or very few cultivars. The most important properties making 'Cavendish' the main export banana are related to transport and shelf life rather than taste; major commercial cultivars rarely have a superior flavour compared to the less widespread cultivars. Export bananas are picked green, and then usually ripened in ripening rooms when they arrive in their country of destination. These are special rooms made air-tight and filled with ethylene gas to induce ripening. Bananas can be ordered by the retailer "ungassed", however, and may show up at the supermarket still fully green. While these bananas will ripen more slowly, the flavour will be notably richer, and the banana peel can be allowed to reach a yellow/brown speckled phase, and yet retain a firm flesh inside. Thus, shelf life is somewhat extended. The flavour and texture of bananas are affected by the temperature at which they ripen. Bananas are refrigerated to between 13.5 and 15 °C (57 and 59 °F) during transportation. At lower temperatures, the ripening of bananas permanently stalls, and the bananas will turn grey.

Certain banana cultivars turn red or purplish instead of yellow as they ripen.

It should be noted that Musa × paradisiaca is also the generic name for the common plantain, a coarser and starchier variant not to be confused with Musa acuminata or the Cavendish variety. Plantains have all but replaced the Cavendish in markets dominated by supply-side logistics.

In addition to the fruit, the flower of the banana plant (also known as banana blossom or banana heart) is used in Southeast Asian, Bengali and Kerala (India) cuisine, either served raw with dips or cooked in soups and curries. The tender core of the banana plant's trunk is also used, notably in Burmese, Bengali and Kerala cooking. Bananas fried with batter is a popular dessert in Malaysia, Singapore and Indonesia. Banana fritters can be served with ice-cream as well. The juice extract prepared from the tender core is used to treat kidney stones.

The leaves of the banana are large, flexible, and waterproof; they are used in many ways, including as umbrellas and to wrap food for cooking. Chinese zongzi (bamboo leaves are more commonly used where available) and Central American tamales are sometimes steamed in banana leaves, and the Hawaiian imu is often lined with them. Puerto Rican "pasteles" are boiled wrapped and tied inside the leaf.

Banana chips are a snack produced from dehydrated or fried banana or, preferably, plantain slices, which have a dark brown colour and an intense banana taste. Bananas have also been used in the making of jam. Unlike other fruits, it is difficult to extract juice from bananas because when compressed a banana simply turns to pulp.

Seeded bananas (Musa balbisiana), considered to be one of the forerunners of the common domesticated banana, are sold in markets in Indonesia.

It is reported that in Orissa, India, juice is extracted from the corm and used as a home remedy for the treatment of jaundice. In other places honey is mixed with mashed banana fruit and used for the same purpose.

Trade

Women in Belize sorting bananas and cutting them from bunches.

Top Banana Producing Nations - 2005 (in million metric tons)
India	16.8
Brazil	6.7
China	6.4
Ecuador	5.9
Philippines	5.8
Indonesia	4.5
Costa Rica	2.2
Mexico	2.0
Thailand	2.0
Colombia	1.6
Burundi	1.6
World Total	72.5
Source: UN Food & Agriculture Organisation

Bananas and plantains constitute a major staple food crop for millions of people in developing countries. In most tropical countries green (unripe) bananas used for cooking represent the main cultivars. Cooking bananas are very similar to potatoes in how they are used. Both can be fried, boiled, baked or chipped and have similar taste and texture when served. One green cooking banana has about the same calorie content as one potato.

In 2003, India led the world in banana production, representing approximately 23% of the worldwide crop, most of which was for domestic consumption. The four leading banana exporting countries were Ecuador, Costa Rica, Philippines, and Colombia, which accounted for about two-thirds of the world's exports, each exporting more than 1 million tons. Ecuador alone provided more than 30% of global banana exports, according to FAO statistics.

Bananas in a grocery store

The vast majority of producers are small-scale farmers growing the crop either for home consumption or for local markets. Because bananas and plantains will produce fruit year-round, they provide an extremely valuable source of food during the hunger season (that period of time when all the food from the previous harvest has been consumed, and the next harvest is still some time away). It is for these reasons that bananas and plantains are of major importance to food security.

Bananas are among the most widely consumed foods in the world. Most banana farmers receive a low unit price for their produce as supermarkets buy enormous quantities and receive a discount for that business. Competition amongst supermarkets has led to reduced margins in recent years which in turn has led to lower prices for growers. Chiquita, Del Monte, Dole and Fyffes grow their own bananas in Ecuador, Colombia, Costa Rica, Guatemala and Honduras. Banana plantations are capital intensive and demand high expertise so the majority of independent growers are large and wealthy landowners of these countries. This has led to bananas being available as a "fair trade" item in some countries.

The banana has an extensive trade history beginning with the founding of the United Fruit Company (now Chiquita) at the end of the nineteenth century. For much of the 20th century, bananas and coffee dominated the export economies of Central America. In the 1930s, bananas and coffee made up as much as 75 percent of the region's exports. As late as 1960, the two crops accounted for 67 percent of the exports from the region. Though the two were grown in similar regions, they tended not to be distributed together. The United Fruit Company based its business almost entirely on the banana trade, as the coffee trade proved too difficult for it to control. The term "banana republic" has been broadly applied to most countries in Central America, but from a strict economic perspective only Costa Rica, Honduras, and Panama were actual "banana republics", countries with economies dominated by the banana trade.

The countries of the European Union have traditionally imported many of their bananas from the former European island colonies of the Caribbean, paying guaranteed prices above global market rates. As of 2005 these arrangements were in the process of being withdrawn under pressure from other major trading powers, principally the United States. The withdrawal of these indirect subsidies to Caribbean producers is expected to favour the banana producers of Central America, in which American companies have an economic interest.

Cultivation

While the original bananas contained rather large seeds, triploid (and thus seedless) cultivars have been selected for human consumption. These are propagated asexually from offshoots of the plant. The plant is allowed to produce 2 shoots at a time; a larger one for fruiting immediately and a smaller "sucker" or "follower" that will produce fruit in 6–8 months time. The life of a banana plantation is 25 years or longer, during which time the individual stools or planting sites may move slightly from their original positions as lateral rhizome formation dictates. Latin Americans sometimes comment that the plants are "walking" over time.

File:Bananacorms.jpg

Banana corms.

Cultivated bananas are parthenocarpic, which makes them sterile and unable to produce viable seeds. Lacking seeds, another form of propagation is required. This involves removing and transplanting part of the underground stem (called a corm). Usually this is done by carefully removing a sucker (a vertical shoot that develops from the base of the banana pseudostem) with some roots intact. However, small sympodial corms, representing not yet elongated suckers, are harder to transplant and can be left out of the ground for up to 2 weeks; they require minimal care and can be boxed together for shipment.

In some countries, bananas are commercially propagated by means of tissue culture. This method is preferred since it ensures disease-free planting material. When using vegetative parts such as suckers for propagation, there is a risk of transmitting diseases (especially the devastating Panama disease).

Pests and diseases

While in no danger of outright extinction, the most common edible banana cultivar 'Cavendish' (extremely popular in Europe and the Americas) could become unviable for large-scale cultivation in the next 10-20 years. Its predecessor 'Gros Michel', discovered in the 1820s, has already suffered this fate. Like almost all bananas, it lacks genetic diversity, which makes it vulnerable to diseases, which threaten both commercial cultivation and the small-scale subsistence farming. Major diseases include:

Banana bunches are sometimes encased in plastic bags for protection. The bags may be coated with pesticides.

Inspecting bananas for fruit flies.

• Panama Disease (Race 1) – fusarium wilt (a soil fungus). The fungus enters the plants through the roots and moves up with water into the trunk and leaves, producing gels and gums. These plug and cut off the flow of water and nutrients, causing the plant to wilt. Prior to 1960 almost all commercial banana production centered on the cultivar 'Gros Michel', which was highly susceptible to fusarium wilt. The cultivar 'Cavendish' was chosen as a replacement for 'Gros Michel' because out of the resistant cultivars it was viewed as producing the highest quality fruit. However, more care is required for shipping the 'Cavendish' banana and its quality compared to 'Gros Michel' is debated.
• Tropical Race 4 - a reinvigorated strain of Panama Disease first discovered in 1992. This is a virulent form of fusarium wilt that has wiped out 'Cavendish' in several southeast Asian countries. It has yet to reach the Americas; however, soil fungi can easily be carried on boots, clothing, or tools. This is how Tropical Race 4 moves from one plantation to another and is its most likely route into Latin America. The Cavendish cultivar is highly susceptible to TR4, and over time, Cavendish is almost certain to be eliminated from commercial production by this disease. Unfortunately the only known defense to TR4 is genetic resistance.
• Black Sigatoka - a fungal leaf spot disease first observed in Fiji in 1963 or 1964. Black Sigatoka (also known as Black Leaf Streak) has spread to banana plantations throughout the tropics due to infected banana leaves being used as packing material. It affects all of the main cultivars of bananas and plantains, impeding photosynthesis by turning parts of their leaves black, and eventually killing the entire leaf. Being starved for energy, fruit production falls by 50% or more, and the bananas that do grow suffer premature ripening, making them unsuitable for export. The fungus has shown ever increasing resistance to fungicidal treatment, with the current expense for treating 1 hectare exceeding US$1000 per year. In addition to the financial expense there is the question of how long such intensive spraying can be justified environmentally. Several resistant cultivars of banana have been developed, but none has yet received wide scale commercial acceptance due to taste and texture issues.
• Banana Bunchy Top Virus (BBTV) - this virus is spread from plant to plant by aphids. It causes stunting of the leaves resulting in a "bunched" appearance. Generally, a banana plant infected with the virus will not set fruit, although mild strains exist in many areas which do allow for some fruit production. These mild strains are often mistaken for malnourishment, or a disease other than BBTV. There is no cure for BBTV, however its effect can be minimised by planting only tissue cultured plants (In-vitro propagation), controlling the aphids, and immediately removing and destroying any plant from the field that shows signs of the disease.

Even though it is no longer viable for large scale cultivation, 'Gros Michel' is not extinct and is still grown in areas where Panama Disease is not found. Likewise, 'Cavendish' is in no danger of extinction, but it may leave the shelves of the supermarkets for good if diseases make it impossible to supply the global market. It is unclear if any existing cultivar can replace 'Cavendish' on a scale needed to fill current demand, so various hybridisation and genetic engineering programs are working on creating a disease-resistant, mass-market banana.

Australia is relatively free of plant diseases and therefore prohibits imports. When Cyclone Larry wiped out Australia's domestic banana crop in 2006, bananas became very expensive.

Effects of banana diseases in East Africa

File:FHIA-17.jpg

Tanzanian farmers with 92 kg (200 lb) bunch of FHIA-17 bananas.

Most bananas grown worldwide are used for local consumption. In the tropics, bananas, especially cooking bananas, represent a major source of food, as well as a major source of income for smallholder farmers. It is in the East African highlands that bananas reach their greatest importance as a staple food crop. In countries such as Uganda, Burundi and Rwanda per capita consumption has been estimated at 450 kg per year, the highest in the world. Ugandans use the same word "matooke" to describe both banana and food.

In the past, the banana was a highly sustainable crop with a long plantation life and stable yields year round. However with the arrival of the Black Sigatoka fungus, banana production in eastern Africa has fallen by over 40%. For example during the 1970s, Uganda produced 15 to 20 tonnes of bananas per hectare. Today production has fallen to only 6 tonnes per hectare.

The situation has started to improve as new disease resistant cultivars have been developed such as the FHIA-17 (known in Uganda as the Kabana 3). These new cultivars taste different from the traditionally grown banana which has slowed their acceptance by local farmers. However, by adding mulch and animal manure to the soil around the base of the banana plant, these new cultivars have substantially increased yields in the areas where they have been tried.

The Rockefeller Foundation has started trials for genetically modified banana plants that are resistant to both Black Sigatoka and banana weevils. It is developing cultivars specifically for smallholder or subsistence farmers.

Fibre

M. acuminata x balbisiana flower, partially opened.

The banana plant has long been a source of fibre for high quality textiles. In Japan, the cultivation of banana for clothing and household use dates back to at least the 13th century. In the Japanese system, leaves and shoots are cut from the plant periodically to ensure softness. The harvested shoots must first be boiled in lye to prepare the fibres for the making of the yarn. These banana shoots produce fibres of varying degrees of softness, yielding yarns and textiles with differing qualities for specific uses. For example, the outermost fibres of the shoots are the coarsest, and are suitable for tablecloths, whereas the softest innermost fibres are desirable for kimono and kamishimo. This traditional Japanese banana cloth making process requires many steps, all performed by hand.

In another system employed in Nepal, the trunk of the banana plant is harvested instead, small pieces of which are subjected to a softening process, mechanical extraction of the fibres, bleaching, and drying. After that, the fibres are sent to the Kathmandu valley for the making of high end rugs with a textural quality similar to silk. These banana fibre rugs are woven by the traditional Nepalese hand-knotted methods, and are sold RugMark certified.

Banana fibre is also used in the production of banana paper.

Popular culture

The depiction of a person slipping on a banana peel has been a staple of physical comedy for generations. A 1906 comedy record produced by Edison Records features a popular character of the time, "Cal Stewart", claiming to describe his own such incident, saying:

I don't think much of a man what throws a bananer peelin' on the sidewalk, and I don't think much of a bananer what throws a man on the sidewalk, neether. ... my foot hit that bananer peelin' and I went up in the air, and cum down ker-plunk, and fer about a minnit I seen all the stars what stronomy tells about, and some that haint been discovered yit. Wall jist as I wuz pickin' myself up a little boy cum runnin' cross the street and he sed "Oh mister, won't you please do that agin, my mother didn't see you do it."

Because of the stereotypical image of monkeys and apes eating bananas, they have been used for racist insults, such as throwing bananas at sports players of African descent. Due to their association with monkeys they are also used as tokens in the 3D Nintendo versions of Donkey Kong and the Sega series Super Monkey Ball. In Chinese culture, banana is a slang term which is used to describe an Asian person who acts like a caucasian (yellow on the outside, white on the inside). Bananas are also humorously used as a phallic symbol due to similarities in size and shape.

Other Uses

A banana peel being used to clean and polish shoes.

A banana peel can be used to effectively shine shoes[1].

Further information: [[:Shoe polish]]

See also

• Isoamyl acetate
• Banana messenger
• Enset (false banana)
• Hallucinogenic effects of banana peels

References

• FAO. Bananas Commodity notes: Final results of the 2003 season, 2004
• Denham, T., Haberle, S. G., Lentfer, C., Fullagar, R., Field, J., Porch, N., Therin, M., Winsborough B., and Golson, J. Multi-disciplinary Evidence for the Origins of Agriculture from 6950-6440 Cal BP at Kuk Swamp in the Highlands of New Guinea. Science, June 2003 issue.
• Skidmore, T., Smith, P. - Modern Latin America (5th edition), (2001) New York: Oxford University Press)
• Editors (2006). "Banana fiber rugs". Dwell. 6 (7): 44. {{cite journal}}: |author= has generic name (help) Brief mention of banana fibre rugs
• Leibling, Robert W. and Pepperdine, Donna (2006). "Natural remedies of Arabia". Saudi Aramco World. 57 (5): 14.{{cite journal}}: CS1 maint: multiple names: authors list (link) Banana etymology, banana flour

External links

• Complete nutritional information.
• Banana research at the International Institute of Tropical Agriculture (IITA)
• International Network for the Improvement of Banana and Plantain (INIBAP)
• Honduran Foundation of Agricultural Research: Bananas & Plantains
• Banana from Fruits of Warm Climates by Julia Morton
• Banana Fruit Facts - California Rare Fruit Growers.
• Tracing antiquity of banana cultivation in Papua New Guinea
• Bananas could split for good
• Bananas not on verge of extinction, says FAO.
• Plant pathologists unpeel rumors of banana extinction
• The influence of banana stem extract on urinary risk factors for stones
• Weaving Kijoka Banana Fiber Cloth