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目的:通过研究夏枯草不同部位活性成分含量动态变化规律,确定夏枯草最佳采收期,研究其全草的药用价值,并探讨夏枯草开发为保健蔬菜可行性。方法:采用分光光度法测定总黄酮的含量,高效液相法测定熊果酸和齐墩果酸的含量,按2005年版《中国药典》规定方法测定灰分和浸出物的含量。结果:夏枯草各部位中均含有活性成分,但是不同时期不同部位活性成分含量存在很大差异。结论:江淮地区夏枯草果穗最佳采收期在6月28日左右,其茎叶的最佳采收期为5月末。夏枯草全株均具有一定的药用价值。
OBJECTIVE: To study the dynamic changes of active ingredients in different parts of Prunella vulgaris, determine the optimal harvest time of Prunella vulgaris, study the medicinal value of Prunella vulgaris, and discuss the feasibility of Prunella vulgaris as a health care vegetable. Methods: The content of total flavonoids was determined by spectrophotometry and the contents of ursolic acid and oleanolic acid were determined by HPLC. The contents of ash and extract were determined according to the method of 2005 Chinese Pharmacopoeia. Results: All parts of Prunella vulgaris contained active ingredients, but there were great differences in the contents of active ingredients in different parts of Prunella vulgaris. Conclusion: The optimal harvest period of Prunella spike in Jianghuai area is around June 28, and the best harvest period of stems and leaves is the end of May. Prunella whole plant has some medicinal value.