Effect of dietary fiber of vegetables on calcium and vitamin B1 absorption

1)分别从生胡萝卜、水煮和油炸胡萝卜、菠菜、食用南瓜根和甜椒中分离膳食纤维。pH为5.4时，膳食纤维对Ca和Na的吸附量大于pH为8.0时。在pH 5.4时，蒸煮增加了膳食纤维对Ca的吸附，而在pH 8.0时，蒸煮增加了膳食纤维对Ca的吸附；通过做饭。2)电镜观察表明，生胡萝卜的膳食纤维呈较圆的形状，油炸胡萝卜的膳食纤维呈伸长的趋势。3)对体内维生素BI总量达到饱和的妇女，早餐时分别给予煮熟的食用黑萝卜根80 g或干胡萝卜粉10 g和作为维生素b1来源的猪肉80 g或单独猪肉80 g。食用冬瓜根80克可降低早餐后5小时尿中维生素Bl的排泄量，胡萝卜干粉10克可使其增加。这些结果表明，食用hurdhurd根可能抑制维生素BI的吸收，而干胡萝卜粉可能促进维生素BI的吸收。4)据报道，由于饲料中钙的吸收与甲状旁腺激素呈反比关系，肾环AMP（NCA）能够监测钙的吸收。因此，在早餐时服用10克胡萝卜干粉的妇女中测量了NcA，但服用胡萝卜干粉并没有改变NcA。

1) Dietary fibers were separated from raw, boiled and fried carrot, spinach, the root of edible hurdock and sweet pepper. Ca and Na adsorption of the dietary fibers were more at pH 5.4 than at PH 8.0. Ca adsorption of the dietary fibers at pH 5.4 was mostly increased by cooking, but that at pH 8.0 was mostly increased ; by cooking.2) It was shown by electron micrograph that the dietary fiber of raw carrot formed on rather round, but that of fried carrot trended to extend.3) Eighty g the root of edible hurdock boiled or ten g dried carrot powder and 80 g pork for thiamin source or 80 g pork alone were administered with breakfast to the women whose total body pool of vitamin BI was saturated. Eighty g the root of edible hurdock decrease the urinary excretion of vitamin Bl for five hours after breakfast, ten g dried carrot powder increased it. These results suggest that the root of edible hurdock may inhibit vitamin BI absorption, whereas dried carrot powder may stimulate it.4) It was reported that nephrongenous cyclic AMP(NCA) was able to monitor Ca absorption, since there is an inverse relation between absorbed dietary Ca and para thyroid hormone. Therefore NcA was measured in women who took ten g dried carrot powder with breakfast, but NcA was not change by taking dried carrot powder.