南川大古树茶主要生化成分分析.docxVIP

目录 TOC \o "1-3" \h \u 摘要 1 Abstract 1 1文献综述 2 1.1南川大古树茶概述 2 1.2主要生化成分 2 1.2.1儿茶素和咖啡碱 2 1.2.2黄酮类物质 3 1.2.3水浸出物 3 1.2.4游离氨基酸 4 2引言 4 3 材料与方法 5 3.1 实验材料 5 3.1.1 材料与试剂 5 3.2 分析方法 6 3.2.1 儿茶素组分、咖啡碱的测定 6 3.2.2 黄酮类测定 6 3.2.3 水浸出物测定 7 3.2.4 游离氨基酸测定 7 4 结果与分析 8 4.1 南川大古树茶咖啡碱、黄酮、水浸出物的比较 8 4.1.1南川大古树茶咖啡碱比较 9 4.1.2南川大古树茶黄酮类比较 9 4.1.3南川大古树茶水浸出物比较 9 4.2南川大古树茶没食子酸、儿茶素组分的比较 10 4.3 南川大古树茶游离氨基酸的比较 12 5 结论 16 参考文献 16 致谢 18 PAGE PAGE 17 南川大古树茶主要生化成分分析 摘要：为探究南川大古树茶绿茶的特点，向南川大古树茶绿茶生化品质研究提供理论依据，本文以不同类型的南川大古树茶为研究对象，选取了6种类型的南川大古树茶，通过对其进行主要生化成分分析比较，总结其规律和特点。结果表明，南川大古树茶咖啡碱含量在40.80-48.45%之间；黄酮总量在2.43-3.25%之间；水浸出物含量在37.98-58.77%之间；EGCG含量在114.50-148.35mg/g之间；茶氨酸在1.68-7.12mg/g之间。整体而言，南川刘窖的银牌南川古树茶6号生化成分含量最丰富，南川大古树茶在理化性质方面无明显的规律特征。 关键词：南川大古树茶；生化成分；绿茶特点；生化品质 Analysis on the main biochemical components of Nanchuan big tree tea Abstract: In order to study the characteristics of Nanchuan Dagushu tea and green tea, and provide a theoretical basis for the research on the biochemical quality of Nanchuan Dagushu tea and green tea. For the tea, compare the main biochemical components between the various tea trees, summarize their laws and characteristics, and conclude that the caffeine content of Nanchuan Dagu tree tea is between 40.80-48.45%; the total flavonoids was 2.43-3.25%, the water extract was 37.98-58.77%, the EGCG was 114.50-148.35 mg/g, and theanine was found to be in the range of 1.68-7.12mg/g. As a whole, the silver medal of Nanchuan Liujiao Nanchuan Ancient Tree Tea No .6 is the most abundant in biochemical composition, and Nanchuan Great Ancient Tree Tea has no obvious regular characteristics in physical and chemical properties. Key words:Nanchuan Dagu Tree Tea; Biochemical Ingredients; Characteristics of Green Tea; Biochemical Quality 1文献综述 1.1南川大古树茶概述 茶文化在中国的起源，相对比较早。著名的《神农本草》中就比较早出现了“茶”字。之后，作为世界范围的茶文化起源地，茶文化被传到世界各地，至今也有将近五千年的历史了。作为中国人，几乎家家都有饮用茶水的习惯。历来不少名人志士都对其情有独钟，而且在盛唐被发扬光大，宋朝开始逐渐在民间开始兴盛起来。如今，同可口可