Roe D A, Kalkwarf H, Stevens J
Division of Nutritional Sciences, Cornell University, Ithaca, New York.
J Am Diet Assoc. 1988 Feb;88(2):211-3.
The effect of dietary fiber from wheat bran and psyllium gum on the apparent absorption of riboflavin was studied in 12 healthy women. The test fiber was consumed in crackers that contained approximately 7.5 gm fiber from psyllium gum, wheat bran, or a combination of the two sources. Each subject was given a riboflavin load test after consuming one of the three different fiber supplements or a control supplement that contained 1.3 gm fiber. Fractional urine collections were made for 24 hours, and riboflavin was measured by fluorometric techniques. The psyllium gum and combination supplements reduced the 24-hour apparent absorption of riboflavin from 31.8% to 25.4% and 26.1%, respectively (p less than .01). No effect of the wheat bran supplement on riboflavin was detected.
在12名健康女性中研究了麦麸和车前子胶中的膳食纤维对核黄素表观吸收的影响。测试纤维被添加到饼干中，这些饼干分别含有约7.5克来自车前子胶、麦麸或两者组合的纤维。在每位受试者食用三种不同纤维补充剂之一或含有1.3克纤维的对照补充剂后，进行核黄素负荷试验。收集24小时的分段尿液，并用荧光技术测量核黄素。车前子胶和组合补充剂分别将核黄素的24小时表观吸收从31.8%降至25.4%和26.1%（p小于0.01）。未检测到麦麸补充剂对核黄素的影响。
