Methods:The chemical compositions of Psidium Guajava L. leaf were analyzed and identified by GC-MS method.
方法：采用气-质联用技术对水番桃叶的化学成分进行分析鉴定。
Objective: to research the chemical compositions of alcohol extraction from Psidium Guajava L. leaf, and to provide the scientific proof for the exploitation of this herbal resource.
目的：研究水番桃叶乙醇提取物的化学成分，为开发该药用资源提供科学依据。
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