雷达操纵员核黄素需要量实验研究

AN EXPERIMENTAL STUDY ON RIBOFLAVIN REQUIREMENT OF RADAR OPERATORS

28名雷达操纵员分为4组,每组7人,每人每日核黄素摄入总量各组依次为0.53mg、1.0mg、2.0mg、3.0mg。于实验第19天和第28天测定受试者清晨1h禁食尿中核黄素排出量、尿核黄素/肌酐比值和全血谷胱甘肽还原酶活性系数(BGR-AC),用两回归方程交点法求核黄素需要量。如以第28天实验结果为准,雷达操纵员核黄素需要量为1.25～1.38mg,较高于一般人群,可能与雷达操纵员处于低照度视力集中作业有关。实验还表明BGR-AC值是一项评价核黄素营养状态和研究核黄素需要量的良好指标。

Twenty eight radar operators were divided into 4 groups (7 operators,each). The riboflavin intakes of 1 to 4 groups were 0.53mg, 1.0mg, 2.0mgand 3.0mg per capita per day, respectively. The riboflavin excretion ofone-hour fasting urine, the ratio of both riboflavin and creatinine in urine,and blood glutathione reductase activity coefficient (BGR-AC) were deter-mined at the 19th and 28th days. The riboflavin requirement was calculatedby means of using the intersection of two regression equations. According to the experimental data in 28th day, the riboflavin requir-ement of radar operator was 1.25 to 1.38mg. This requirement is higherthan that of common population. It is probably related to low illuminancecircumstances in which radar operators worked. The study also revealedthat BGR-AC value was a good index to evaluate the riboflavin nutritionalstatus and to study the riboflavin requirement.