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追踪研究了90例健康孕妇妊娠中、后期膳食核黄素摄入量、母血及脐血全血谷胱甘肽还原酶活性系数(BGRAC)和初乳核黄素水平。发现孕中、后期孕妇核黄素摄入量仅达我国供给量标准的57.5％,膳食核黄素热能比值及核黄素摄入量均与孕妇BGRAC值呈显著负相关。从BGRAC值结果来看,孕中期有27％、孕后期有47％的孕妇体内核黄素不足或缺乏。脐血BGRAC值均在正常范围,提示胎盘能主动转运核黄素,优先保证胎儿需要。初乳核黄素平均含量为22.9μg/dl。
The intake of dietary riboflavin, the activity of glutathione reductase (BGRAC) in maternal blood and umbilical cord blood and the content of riboflavin in colostrum were investigated in 90 healthy pregnant women. It was found that the intake of riboflavin in pregnant women and later pregnant women reached only 57.5% of the standard of China’s supply. The ratio of dietary riboflavin thermal energy and riboflavin intake had a significant negative correlation with the BGRAC value of pregnant women. From the results of BGRAC value, there are 27% in the second trimester and 47% in the second trimester pregnant women are deficient or deficient in riboflavin. Cord blood BGRAC values are in the normal range, suggesting that the placenta can actively transport riboflavin, giving priority to ensuring the fetus needs. The average content of colostrum riboflavin 22.9μg / dl.