膳食纤维生理功能及其对常量营养素吸收影响

膳食纤维对人体健康具有特殊生理功能,尤其是对慢性疾病预防作用;膳食纤维本身不能直接被机体所吸收利用,但对胃肠道功能及多种营养素吸收都有一定影响,常量营养素包括碳水化合物、蛋白质及脂类;膳食纤维对于蛋白质消化吸收影响不大,但可减少脂类和碳水化合物吸收及利用。

The physiology functional characteristics of dietary fiber and effect on macro nutrients absorption

Dietary fiber has some special physiological functions for healthy, especially for the chronic disease. The fiber itself can not be directly absorbed and utilized by the body, but it has some effects on gastrointestinal tract function and absorption of many nutrients. The macro nutrients include protein, lipids and carbohydrates. Dietary fiber does not have significant effect on protein metabolism, but some fiber can decrease the absorption and availability of lipids and carbohydrates.