среда, 21 ноября 2007 г.

Properties


Bananas come in a variety of sizes and colors when ripe, including yellow, purple and red. Bananas can be eaten raw though some varieties are generally cooked first. Depending upon cultivar and ripeness, the flesh can vary in taste from starchy to sweet, and texture from firm to mushy. Unripe or green bananas and plantains are used for cooking various dishes and are the staple starch of many tropical populations. Banana sap is extremely sticky and can be used as a practical adhesive. Sap can be obtained from either the pseudostem, the fruit peelings, or the from the flesh.

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, became commercially unviable due to Panama disease, a fungus which attacks the roots of the banana plant.

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 eventually turn grey.

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 the Burmese dish mohinga, 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. Bananas are also eaten deep fried, baked in their skin in a split bamboo, or steamed in glutinous rice wrapped in a banana leaf in Myanmar where bunches of green bananas surrounding a green coconut in a tray is an important part of traditional offerings to the Buddha and the Nats. 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, carrying and packing cooked foods. In south India, food is traditionally served on banana leaves in homes and some restaurants also follow the practice. Some farmers prefer to grow banana plants only for their leaves. 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.

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Fruit:

All about Fruits! - Botanic fruit and culinary fruit - Fruit development - Simple fruit - Aggregate fruit.

Apple:

The apple is the pomaceous fruit of the apple tree, species Malus domestica in the rose family Rosaceae - The wild ancestor of Malus domestica is Malus sieversii - There are more than 7,500 known cultivars of apples - Like most perennial fruits, apples ordinarily propagate asexually by grafting - Apples are self-incompatible; they must cross-pollinate to develop fruit.

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