摘要
The seasonal and source variations of flavonoid contents in Scutellariae Radix were investigated by using the materials collected at the same place in Liaoning Province, China, during three years, 1990～1992, and in seven other provinces in China. Four principal flavonoids in the plant roots, i.e., baicalin, baicalein, wogonin 7 O glucuronide and wogonin were analyzed by using a reversed phase chromatographic system with a chemically bonded ODS silica gel column and phosphate buffer methanol (68:32 and 1:1) as mobile phase. The contents of the four compounds combined in the herb collected at Chengde, Hebei Province are the highest. The results show that the best time for harvesting the roots in Liaoning Province is the end of August.
用反相ＯＤＳ柱，磷酸缓冲溶液和甲醇（６８：３２和１：１）作为流动相，对中国七个省产的黄芩和辽宁同一产地不同采收期（１９９０１９９２）黄芩中黄芩甙、黄芩素、汉黄芩甙和汉黄芩素四种主要的有效成分进行了定量分析。实验结果表明，河北承德地区野生黄芩中四种成分的含量最高。
