云南省凤庆县野放大叶种茶越冬生化成分变化研究  

Study on the Changes of Biochemical Components in Wild Tea Camellia sinensis (Linn.) var. assamica(Masters) Kitamura in Winter from Fengqing Yunnan

作　　者：肖涵 侯顺 XIAO Han;HOU Shun(School of Chemistry and Chemical Engineering,Kunming University,Kunming,Yunnan,China 650214)

机构地区：[1]昆明学院化学化工学院,云南昆明650214

出　　处：《昆明学院学报》2021年第6期40-45,共6页Journal of Kunming University

基　　金：云南省科技厅地方高校联合专项“大叶种乔木茶园根-土界面轻稀土元素生物利用度调控关键因素研究”(202001BA070001-42)。

摘　　要：为探讨凤庆县野放大叶种茶越冬生化成分变化,于秋冬季节在该县5个野放大叶种茶园采摘同株一芽二至三叶新梢,并对其12种特征生化成分进行分析.结果表明,6种益生矿质元素含量分异明显,Al和Mn含量在茶树生长过程中强富集.入冬后,Fe元素含量相对稳定,含量下降的元素为w(Al)>w(Mn),含量升高的元素为w(Zn)>w(Mg)>w(Cu);除茶氨酸较为稳定外,脯氨酸、总游离氨基酸、可溶性糖质量分数显著升高,水浸出物质量分数明显下降.Mg、Al、Zn和脯氨酸与多个指标均呈现相关性,对季节变化敏感,可作为越冬茶树的特征生化成分因子进行代谢机理研究.In order to study the changes of biochemical components in wild tea Camellia sinensis(Linn.) var. assamica(Masters) Kitamura in winter from Fengqing, one bud-three leaves shoots of the same plant were taken in autumn and winter, respectively from five wild large-leaf tea plantations. Contents of 12 characteristic biochemical components were determined and statistically analyzed. The results showed that the content of Fe was relatively stable;Al and Mn decreased w(Al)>w(Mn) while Zn, Mg and Cu content increased w(Zn)>w(Mg)>w(Cu) during winter. Except that the content of Teasanine was stable, the contents of proline, soluble sugar and total free amino acids increased significantly but the contents of water extracts and tea polyphenols decreased significantly. Mg, Al, Zn and proline are positively correlated to several index and sensitive to seasonal changes and can be used as characteristic factors for winter tea to study its metabolic mechanism.

关 键 词：大叶种茶 一芽两叶至三叶 越冬 益生元素 次生代谢物 

分 类 号：TS272.7[农业科学—茶叶生产加工]