数字农科院2.0

"黄金菊"和"宁州2号"茶树生化成分季节变化特征分析

文献类型: 中文期刊

作者: 江新凤;李琛;曹挥华;张贱根;余志;倪德江;江和源;胡瑶根

作者机构:

关键词: "黄金菊";"宁州2号";季节;生化成分;变化特征

期刊名称:食品安全质量检测学报

ISSN: 2095-0381

年卷期: 2023 年 10 期

页码:

收录情况: 北大核心(2020版) ; ; 科技核心(2023版) ; ; 农林核心(2020版)

摘要: 目的 探究不同采摘季节"黄金菊"、"宁州2号"茶树的生化成分、色素水平,为茶叶加工采摘季节的选择提供参考.方法 采用"黄金菊"(黄色茶树品种)、"宁州2号"(绿色茶树品种)为供试材料,在茶树不同采摘季节分别取其新梢的一芽二叶进行微波固样,分析两个茶树品种主要生化成分、新梢色素含量的季节变化特征,并对二者的品质成分进行比较.结果 "黄金菊"和"宁州2号"茶树新梢游离氨基酸含量平均值分别为3.03%和2.34%,"黄金菊"新梢中的游离氨基酸含量比"宁州2号"高出0.69%,尤其春季是"宁州2号"的1.68倍.两个茶树新梢水浸出物含量为43.95%~49.57%,茶多酚含量为15.47%~23.66%;新梢中的酚氨比均是夏季最高("黄金菊"为9.84±0.45,"宁州2号"为9.02±0.88),其次是秋季、春季."黄金菊"茶树新梢中的叶绿素a、叶绿素b、类胡萝卜随季节(春、夏、秋)变化而升高.结论 不同茶树品种新梢中的主要生化成分、色素含量在不同季节间存在显著差异,"黄金菊"茶树新梢因春季酚氨比低更适合制作春季名优绿茶,夏、秋季节适合制作成红茶;同时色素水平能真实的反应茶树新梢体内的代谢平衡和物质积累水平,能为茶树适制性提供参考.

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