Kiwifruit dietary fiber consists of cell-wall polysaccharides that are typical of the cell walls of many dicotyledonous fruits 獼猴桃膳食纖維對腸胃的影響

Kiwifruit dietary fiber consists of cell-wall polysaccharides that are typical of the cell walls of many dicotyledonous fruits, being composed of pectic polysaccharides, hemicelluloses, and cellulose. The kiwifruit pectic polysaccharides consist of homo- and rhamnogalacturonans with various neutral, (arabino)-galactan side chains, while the hemicelluloses are mostly xyloglucan and xylan. The proportions of pectic polysaccharide, hemicellulose, and cellulose in both green ‘Hayward’ and ‘Zespri? Gold’ are similar and are little affected by in vitro exposure to gastric and small intestinal digestion. The hydration properties of the kiwifruit—swelling and water retention capacity—are also unaffected by foregut digestion, indicating that the functional properties of kiwifruit fiber survive in the foregut. However, in the hindgut, kiwifruit fiber is fermented, but whole kiwifruit consumed in association with slowly fermented fiber leads to distal displacement of fermentation, indicating that hindgut benefits of kiwifruit may result from its interaction with other dietary sources of fiber.

▲golden kiwi tree

獼猴桃膳食纖維由細胞壁多糖組成，是許多雙子葉植物果實細胞壁的典型組成部分，由果膠多糖、半纖維素和纖維素組成。獼猴桃果膠多糖由具有各種中性、（阿拉伯）半乳聚糖側(cè)鏈的高糖和鼠李糖乳糖醛酸組成，而半纖維素主要是木聚糖和木聚糖。綠色“Hayward”和“Zespri?Gold”中果膠多糖、半纖維素和纖維素的比例相似，受體外暴露于胃和小腸消化的影響很小。獼猴桃的水化特性膨脹和保水能力也不受前腸消化的影響，表明獼猴桃纖維的功能特性在前腸中存活。然而，在后腸中，獼猴桃纖維是發(fā)酵的，但與緩慢發(fā)酵的纖維一起食用的整個獼猴桃會導(dǎo)致發(fā)酵的遠端移位，這表明獼猴桃的后腸益處可能來自其與其他膳食纖維來源的相互作用。

獼猴桃膳食纖維對腸胃的影響

▲redkiwifruit▲

▲kiwifruit▲

▲redkiwifruit▲

▲redkiwifruit▲

▲redkiwifruit▲

▲Golden kiwifruit▲

▲Kiwi sapling▲

▲golden kiwi plants