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应用简单的透析和发酵方法,阐明各种膳食纤维组分对胃肠道内营养素吸收、固醇代谢、盲肠发酵和粪便增重的影响。实验结果同人体纤维代谢实验进行比较。通过透析实验可以观察DF对营养素吸收的作用,而识别DF对固醇代谢、盲肠发酵和粪重的影响,则需要综合透析和发酵的结果进行计算。用葡萄糖透析阻滞指数来表示纤维对空肠吸收营养素的作用,指数的计算如下:
Simple dialysis and fermentation methods were applied to elucidate the effects of various dietary fiber components on the absorption of gastrointestinal nutrients, sterol metabolism, cecal fermentation and faecal weight gain. The experimental results are compared with human fiber metabolism experiments. The effects of DF on nutrient uptake can be observed by dialysis experiments. Recognition of the effect of DF on sterol metabolism, cecal fermentation, and fecal weight requires the calculation of the results of a combination of dialysis and fermentation. The glucose dialysis block index is used to indicate the effect of fibers on jejunal uptake of nutrients. The index is calculated as follows: