微波萃取大蒜中有效成分-中山大学化学与化学工程学院-SunYat.doc

文档介绍：大蒜有效成分的微波及超声波萃取方法比较研究
李慧敏叶竞胡素静王列陈敏杜翠娟曹树勇高剑韦薇潘盛荣
(中山大学化学与化学工程学院,99级,广州510275)
指导老师: 邹世春
摘要: 大蒜是百合科植物,其有效成分具有降血脂,抗血小板凝聚,增加纤维蛋白溶解活性,降血糖,抗肿瘤等多种药理作用,故对大蒜中有效成分提取的研究有着现实意义。微波萃取技术是食品和中药有效成分提取的一项新技术,而超声波萃取也是一种很好的萃取方法。本文使用自行设计组装的“直接超声波萃取装置”提取大蒜有效成分,并与高压密闭微波萃取方法对大蒜中有效成分的提取效率进行了比较。结果表明,直接超声波萃取也是一种非常有效的植物有效成份提取方法。
关键词:微波,超声波,萃取,大蒜,有效成分。
Comparative Studies on Methods for Obtaining ponents from Allium Sat1vum by Microwave-Assisted Extraction and Direct Ultrasound Extraction
Li Huimin Ye Jing Hu Sujing Wang Lie Chen Min Tu Cuijuan
Cao Shuyong Gao Jian Wei Wei Pan Shengrong
(School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China)
Supervisor: Zou Shichun
Abstract: parison study were carried out for the extraction of effective constituents from Allium Sat1vum using microwave assisted extraction (MAE) and direct ultrasound extraction (DUE) methods. The results showed that the former has much higher extraction efficiency than the later. However the low power of DUE method can tolerate much sample amount and extraction volume. It is more better for the industrial extraction of effective constituents from the plant materials.
Keywords: Microwave, ultrasound, extraction, Allium Sat1vum, ponent.
1 前言
大蒜中有效成分包括有:1)挥发性成分,如硫醚类化合物,蒜辣素,二***化硫,2-羟基丙烯,聚伞花烯,反式大蒜烯,顺式大蒜烯,2-乙烯基-4-氢-1,3二噻烯,3-乙烯基-4-氢-1,2-二噻烯;2)糖类,包括葡萄糖,果糖,半乳糖,蔗糖,棉子糖,淀粉,大蒜糊精和大蒜糖等。此外,还有大蒜中还含有四种多聚糖