百里香精油的提取工艺及化学成分分析-《中国调味品》

文章信息/Info

Title:: Extraction of Essential Oil from Thymi herba and and Its Composition Analysis

摘要:: 采用超高压法提取百里香精油，考察压力、料液比、粉碎度和保压时间对百里香精油提取率的影响，用气相色谱-质谱联用技术对精油化学成分进行分析。结果表明：超高压萃取百里香精油的最佳条件为：压力410MPa，料液比1∶28，粉碎度50目，保压时间4min，提取温度为室温，得到百里香精油提取量平均值为11.236mg/g。气质联用分析确认了百里香精油中的46种成分，占总峰面积的97.949%，主要成分有百里酚（43.925%）、对-聚伞花素（16.112%）等。

Abstract:: Thyme essential oil was extracted by ultra-high pressure method. The effects of pressure, solid-liquid ratio, grinding degree and dwell time on the extraction rate of thyme essential oil were investigated. The chemical constituents of essential oils were analyzed by GC-MS.The results showed that the optimum conditions for extracting thyme essential oil were as follows: pressure 410 MPa, ratio of material to liquid 1:28, grinding degree 50 , dwell time 4 min, extraction temperature at normal atmospheric temperature. The average extraction yield of thyme essential oil was 11.236 mg/g. GC-MS analysis confirmed 46 components, accounting for 97.949% of the total peak area, including thymol (43.925%) and p-cymene (16.112%).