Thursday, October 1, 2009

Kiwi Fruit


Kiwi Fruit

This fruit consists of a hairy, brown peel containing green flesh, with white pulp in the center, surrounded by black, edible seeds. The fruit has a sweet taste, similar to a mixture of banana, pineapple and strawberry. Kiwi fruits are native to China, where they were called "macaque peach".

Kiwi fruits owe their name to a bird, native of New Zealand, named "kiwi", and actually in many regions of Europe, North America and South America, kiwi fruits are generally referred to as "kiwi".

Kiwi is a highly nutritional fruit. It is a rich source of vitamin C. It provides more vitamin C than an orange and more fiber than an apple. Amongst many other things, Vitamin C helps to boost resistance to disease by supporting the immune system, is necessary to form collagen and is a powerful antioxidant. Kiwifruit is a rich source of vitamin C, 1.5 times the DRI scale in the US. Its potassium content by weight is slightly less than that of a banana. It also contains vitamin A and E. The skin is a good source of flavonoid antioxidants. The kiwifruit seed oil contains on average 62% alpha-linolenic acid, an omega-3 fatty acid. Usually a medium size kiwifruit contains about 46 calories, 0.3 g fats, 1 g proteins, 11 g carbohydrates, 75 mg vitamins and 2.6 g dietary fiber.

Kiwifruit is often reported to have mild laxative effects, due to the high level of dietary fiber.

They are best eaten when they are firm, but not rock hard. They should give way slightly to pressure and are best peeled just before eaten. Nutritionally, kiwis are best eaten raw. To benefit from the high fiber content, Kiwis can actually be eaten with their skin on.

Raw kiwifruit is also rich in the protein-dissolving enzyme actinidin, (in the same family of thiol proteases as papain), which is commercially useful as a meat tenderizer but can be an allergen for some individuals. Specifically, people allergic to latex, papayas or pineapples are likely to also be allergic to kiwifruit. The fruit also contains calcium oxalate crystals in the form of raphides. Reactions to these chemicals include sweating, tingling and sore mouth; swelling of the lips, tongue and face; rash; vomiting and abdominal pain; and, in the most severe cases, breathing difficulties, wheezing and collapse. The most common symptoms are unpleasant itching and soreness of the mouth, with the most common severe symptom being wheezing. Severe symptoms are most likely to occur in young children.

This enzyme makes raw kiwifruit unsuitable for use in desserts containing milk or any other dairy products which are not going to be served within hours, because it soon begins to digest milk proteins. This applies to gelatin-based desserts as well, as the actinidin will dissolve the collagen proteins in gelatin very quickly, either liquifying the dessert, or preventing it from solidifying. However, the U.S. Department of Agriculture suggests that cooking the fruit for a few minutes before adding it to the gelatin will overcome this effect. Sliced kiwifruit has long been regularly used as a garnish atop whipped cream on New Zealand's national dessert, the pavlova.

Kiwifruit also serves as a natural blood thinner. A recent study performed at the University of Oslo in Norway reveals that—similar to popular mainstream aspirin therapy—consuming two to three kiwifruit daily for 28 days significantly thins the blood, reducing the risk of clots, and lowers fat in the blood that can cause blockages.

The kiwifruit skin is edible and contains high amounts of dietary fiber. In a fully matured kiwifruit one study showed that this as much as tripled the fiber content of the fruit. In addition, as many of the vitamins are stored immediately under the skin, leaving the skin intact greatly increases the vitamin C consumed by eating a single piece of kiwifruit when compared to eating it peeled. As with all fruit, it is recommended that if eating the skin, the fruit be washed prior to consumption.
Studies have proven that kiwifruits are useful in improving conditions of asthmatic children, and in decreasing the probability of colon cancer by providing a good amount of dietary fiber, for more information please refer to our kiwifruit health benefits page.

Source: http://kiwi-fruit.info/