不同采收时间及干燥方法对黄蜀葵花总黄酮含量的影响

Changes of Total Fiavone in Abelmoschus Manihot Medic.Affected by Time Difference in Collection and Different Drying Method

目的：比较不同采收时间及干燥方法对黄蜀葵花总黄酮的影响。方法：以总黄酮为指标成分，比色法测定不同黄蜀葵花样品中的含量。结果：不同采收时间花的总黄酮含量为５．７８％～６．５３％；不同开放程度分别为：未开放花蕾（３．７４±０．６２）％；上、中、下午开放的花朵（５．９８±０．３０）％，（５．８１±０．５１）％，（６．０６±０．４７）％，；自然干燥（３．６８±０．３３）％（３０～４５℃），（１．６０±０．４４）％（２０～３０℃），烘箱干燥（５．８０±０．５３）％（８０℃），（５．９５±０．５２）％（１００℃）。结论：长期内不同采收时间段无显著差异。烘干法优于自然干燥。

OBJECTIVE:To observe the changes of total flavone in Abelmoschus manihot Medic.caused by time difference in collecting the plant and different drying methodes.METHOD:Colorimetry was used to determine the content of total flavone in different samples of Abelmoschus manihot Medic.RESULT:The total flavone in defferent collecting time was 5.78%～6.53%.This figure with different degree of blossom was (3.74±0.62)%,(5.98±0.30)%,(5.81±0.51)% and (6.06±0.47)% respectively (referring to non blossom,blossom in the morning,blossom at noon and blossom in the afternoon respectively).With natural trying the figures were(3.68±0.33)% at 30～45℃ and (1.60±0.44)% at 20～30℃.With the drying oven,the figures were (5.80±0.53)% at 80℃ and (5.95±0.52)% at 100℃.CONCLUSION:No significant difference was detected with different collecting time.Dry method was better than natural drying with a temperature range of 60～80℃.