论文部分内容阅读
本文继上文叙述水溶性维生素需要量。水溶性维生素中,B_1、B_2、菸酸是产生热量等所必需的维生素,换算成每消耗热量1000大卡的mg来计算。根据FAO/WHO的意见,从尿中排泄量计算的组织饱和量,转酮酶等酶活性的测定和流行病学的调查,B_1的需要量为0.40mg/1000大卡,至于B_2及菸酸,也主要是根据尿中排泄量测定饱和量来计算,分别定为0.55mg/1000大卡和6.6菸酸当量/1000大卡。所谓菸酸当量,即等于1mg菸酸或60mg色氨酸。许多国家沿用FAO/WHO的值来计算。可是也有试图使用与之不同值的,所以在表
This article follows the above description of water-soluble vitamin requirements. In water-soluble vitamins, B_1, B_2, nicotinic acid are vitamins that are necessary to produce calories and are calculated as mg per 1000 calories consumed. According to FAO / WHO’s opinion, the amount of tissue exudates calculated from the urinary excretion, the determination of enzymatic activity of transketolase, and the epidemiological investigation, the requirement for B 1 is 0.40 mg / 1000 kcal, for B 2 and niacin , Is also mainly based on the determination of urinary excretion of saturated to calculate, respectively, as 0.55mg / 1000 kcal and 6.6 nicotinic acid equivalent / 1000 kcal. The so-called niacin equivalent, which is equal to 1mg nicotinic acid or 60mg tryptophan. Many countries use the value of FAO / WHO to calculate. However, there are also attempts to use different values, so in the table