Thursday 28 November 2013

THE SECRET IN APPLE



 Apples are the pomaceous fruit of the apple tree. It is one of the most widely cultivated tree fruits, and the most widely known of the many members of genus Malus that are used by humans. 

Apples grow on small, deciduous trees. The tree originated in Central Asia and is still found today. Apples have been grown for thousands of years in Asia and Europe, and were brought to North America by European colonists. Apples have been present in the mythology and religions of many cultures, including Norse, Greek and Christian traditions.
 The phytonutrients in apples can help you regulate your blood sugar. Recent research has shown that apples can help prevent spikes in blood sugar through a variety of mechanisms. Flavonoids like quercetin found in apples can inhibit enzymes like alpha-amylase and alpha-glucosidase. Since these enzymes are involved in the breakdown of complex carbohydrates into simple sugars, your blood sugar has fewer simple sugars to deal with when these enzymes are inhibited. In addition, the polyphenols in apple have been shown to lessen absorption of glucose from the digestive tract; to stimulate the beta cells of the pancreas to secrete insulin; and to increase uptake of glucose from the blood via stimulation of insulin receptors. All of these mechanisms triggered by apple polyphenols can make it easier for you to regulate your blood sugar.
  • The whole food form of apples is also important if you want full satisfaction from eating them. Researchers have recently compared intake of whole apples to intake of applesauce and apple juice, only to discover that people report less hunger and better satiety, or food satisfaction after eating whole apples than after eating applesauce or drinking apple juice. But especially interesting was an additional finding about calorie intake following apple consumption.
  • According to research when healthy adults consumed one medium-sized apple approximately 15 minutes before a meal, their caloric intake at that meal decreased by an average of 15%. Since meals in this study averaged 1,240 calories, a reduction of 15% meant a reduction of 186 calories, or about 60 more calories than contained in a medium apple. For these researchers, "getting ahead" in calories with a net reduction of 60 calories was a welcomed outcome of the study, and an extra benefit to their study's primary conclusion—the importance of whole apples (versus other more processed apple forms) in helping us manage our hunger and feeling more satisfied with our food.

Scientists have recently shown that important health benefits of apples may stem from their impact on bacteria in the digestive tract. In studies on laboratory animals, intake of apples is now known to significantly alter amounts of two bacteria in the large intestine. As a result of these bacterial changes, metabolism in the large intestine is also changed, and many of these changes appear to provide health benefits. For example, due to bacterial changes in the large intestine, there appears to be more fuel available to the large intestine cells in the form of butyric acid after apple is consumed. We expect to see future studies confirming these results in humans, and we are excited to think about potential health benefits of apple that will be related to its impact on bacterial balance in our digestive tract.



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