为了解槐枝中挥发油的化学成分，为其开发利用提供依据，采用水蒸汽蒸馏法分别提取新鲜和干燥槐枝中的挥发油，用气相色谱-质谱联用法分析和鉴定其化学成分。结果表明：新鲜槐枝挥发油中分离出60种成分，鉴定出58种，占挥发油总量的97．73％；干燥槐枝挥发油中分离出56种，鉴定出46种成分，占挥发油总量的92．86％。新鲜和干燥槐枝挥发油的主要成分为棕榈酸、亚油酸和油酸，其相对含量在新鲜槐枝中分别为39．53％、16．04％和6．98％，在干燥槐枝中分别为33．74％、7．59％和4．48％。新鲜和干燥槐枝中的挥发油化学成分存在差异。%The volatile oil from fresh and dried branches of S.japonica was hydro-distilled and analyzed by GC-MS to provide references for its exploitation and utilization.The results showed that 58 compounds were identified,representing 97.73% of the fresh branches of S.japonica volatile oil,whereas in the dried branches of S.japonica volatile oil,only 46 compounds were identified,representing 92.86%.The main components of fresh branches of S.japonica were palmitic acid(39.53%),linoleic acid(16.04%) and oleic acid (6.98%);The main components of dried branches of S.japonica were palmitic acid (33.74%),linoleic acid(7.59%)and oleic acid(4.48%).There are significant differences between volatile oil from fresh and dried branches of S.japonica.
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