Anderson J W, Bridges S R
VA Medical Center, Lexington, KY 40511.
Am J Clin Nutr. 1988 Mar;47(3):440-7. doi: 10.1093/ajcn/47.3.440.
Dietary fiber measurements are essential to assessment of the potential therapeutic and preventive effects of fiber intake. Ideally, dietary fiber analyses should measure all components--soluble polysaccharides, noncellulosic polysaccharides, cellulose, and lignin--and the constituent sugars of the soluble and noncellulosic polysaccharides. We modified existing techniques to measure reproducibly the total dietary fiber, polysaccharide, and lignin components and the sugar constituents of selected foods. Soluble-fiber content as percentage of total dietary fiber for groups of foods averaged 32% for cereal products, 32% for vegetables, 25% for dried beans, and 38% for fruits. Lignin content, estimated gravimetrically, was approximately 1.4 g/100 g dry wt for 24 foods. Detailed fiber measurements are critical for evaluating the potential health benefits of dietary fiber intake.
膳食纤维的测量对于评估纤维摄入的潜在治疗和预防效果至关重要。理想情况下，膳食纤维分析应测量所有成分——可溶性多糖、非纤维素多糖、纤维素和木质素——以及可溶性和非纤维素多糖的组成糖。我们改进了现有技术，以可重复地测量选定食物的总膳食纤维、多糖、木质素成分以及糖成分。各类食物中，膳食纤维中可溶性纤维含量的平均值为：谷类产品32%，蔬菜32%，干豆25%，水果38%。通过重量法估算，24种食物的木质素含量约为1.4克/100克干重。详细的纤维测量对于评估膳食纤维摄入对健康的潜在益处至关重要。
