地黄清蒸不同时间5-羟甲基糠醛含量变化研究

目的:考察地黄清蒸不同时间5-羟甲基糠醛含量的变化规律。方法:采用高效液相色谱法,C₁₈色谱柱(6mm×200mm,5μm),流动相甲醇-水(15∶85),流速1mL.min^-1,柱温24℃,检测波长284nm。结果:5-羟甲基糠醛在0.01~0.08μg呈良好线性关系,r=0.9999 (n=5),平均回收率100.2%,RSD2.7% (n=5)。结论:地黄在蒸制过程中,5-羟甲基糠醛的含量在一定时间范围内随着时间的延长而增加。

Studies on the changes of 5-hydroxymethyl furfuraldehyde content in Radix Rehmanniae steamed for different time

OBJECTIVE: To find the changing regularity of 5-Hydroxymethyl furfuraldehyde (5-HMF) content in Radix Rehmanniae steamed for different time. METHOD: HPLC method was used, with C18 column (6 mm x 200 mm, 5 microm), a mixture of methanol-water (15: 85) as the mobile phase. The flow rate was 1.0 mL x min(-1). The UV detection was setat 284 nm and the column temperature was set at 24 degrees C. RESULT: The linear range was from 0.01 to 0.08 microg, r = 0.999 9 (n = 5). The average recovery was 100.2% and RSD was 2.7% (n = 5). CONCLUSION: The 5-HMF content increases as the processing time prolongs in a certain time rang.