微波辅助热水浸提法提取香菇多糖.doc

绥化学院 本科毕业设计（论文） 微波辅助热水浸提法提取香菇多糖的研究 学生姓名： 李斌 学 号： 200850334 专 业： 食品科学与工程 年 级： 2008 级一班 指导教师： 王广慧 副教授 Suihua Hot Water Extract Lentinan by Microwave Aided Student name Li Bin Student number 200850334 Major Food Sscience and Engineering Supervising teacher Wang Guanghui Suihua Ⅰ 摘 要 香菇是世界第二大 HYPERLINK /view/40432.htm \t _blank 食用菌，也是我国 HYPERLINK /view/239603.htm \t _blank 特产之一，在民间素有“山珍”之称，营养丰富。香菇多糖是从香菇中分离纯化的一种葡聚糖，具有抗肿瘤、调节免疫、抗病毒、防感染等生物活性。 近年来关于香菇多糖的提取研究很多，如热水浸提法、稀酸浸提法、稀碱浸提法、酶法提取及超声法等。1991年，Pare等提出了微波提取的机理，有报道使用该技术提取香菇多糖获得了成功，证明该方法能够节省大量能耗和时间。本文以香菇多糖为研究对象，采用单因素实验对香菇多糖的微波提取工艺进行了研究，比较了料液比、微波功率和辐射时间对多糖提取率的影响，并得到了微波法提取香菇多糖的最佳工艺条件为：料液比1:60 mL、微波功率800 W，辐射时间6 min，通过实验结果发现，微波法具有节能、省时、操作便利和提取率高等特点。 关键词：香菇多糖；微波；提取 Ⅱ Abstract Around the world mushroom is the second biggest edible fungus.It is also one of specialty in our country.It is known as “Mountain delicacies”say in civil and rich in nutrition.Lentinan is the separate and purified glucan from mushroom.Lentinan have anticancer,regulate immune,antivirus,prevent infection biological activity. In recent years,the research about lentinan extract is a lot.Such as hot water extraction,dilute acid extraction, dilute alkali extraction,enzymatic method and the ultrasonic method.In 1991,Pare put forward the mechanism of microwave extraction.According to the report he use the technology to extract lentinan succeeded.It prove the method can save a lot of energy and time.This paper taking lentinan as the research object,using the single factor experiment to research the lentinan microwave extraction technology and the Extraction yield HYPERLINK /search?q=under+the+influence+ofle=engkeyfrom=dict.basic.wordgroup under the influence of different liquidratio,power of microwave and radiation time.Obtains The Result,the Best technological conditions:Iquidratio 1:60 mL, Power of microwave 80