Lund E D
Lipids. 1984 Feb;19(2):85-90. doi: 10.1007/BF02534496.
The cholesterol binding capacity of 28 fiber samples from a variety of the more common tropical fruits and vegetables was determined. The binding capacity of cholestyramine, cellulose, lignin, guar gum and citrus pectin were also determined. Capacities were evaluated by an in vitro method that simulates the effect of the human digestive system on fiber using a series of enzymatic treatments before the binding was determined. Binding values varied from 3% for a soluble fraction of cassava to 84% for cholestyramine. Values for most fruit and vegetable fiber samples were less than or ca. equal to cellulose or lignin (20% and 16%, respectively). Apart from cholestyramine, sweet potato was the most effective binder (30%). Citrus pectin, at 8%, was a relatively poor binder. The capacity of guar gum (17%) was slightly less than cellulose. These data do not support the conclusion from in vivo studies that the hypocholesteremic effects observed for citrus pectin and guar gum are the result of the direct binding of cholesterol or bile acids in the large intestine.
测定了来自多种常见热带水果和蔬菜的28种纤维样品的胆固醇结合能力。还测定了消胆胺、纤维素、木质素、瓜尔豆胶和柑橘果胶的结合能力。通过一种体外方法评估结合能力，该方法在测定结合之前，使用一系列酶处理来模拟人体消化系统对纤维的作用。结合值从木薯可溶部分的3%到消胆胺的84%不等。大多数水果和蔬菜纤维样品的值小于或约等于纤维素或木质素（分别为20%和16%）。除消胆胺外，红薯是最有效的结合剂（30%）。柑橘果胶的结合率为8%，是相对较差的结合剂。瓜尔豆胶的结合能力（17%）略低于纤维素。这些数据不支持体内研究得出的结论，即观察到的柑橘果胶和瓜尔豆胶的降胆固醇作用是大肠中胆固醇或胆汁酸直接结合的结果。
