摘要
在双江县亥公村对藤条小树茶、藤条大树茶、放养型茶、台地茶 4 种树体管理模式进行采样并检测分析,利用主成分分析法,分析 4 种树体管理模式茶叶内含物质,筛选出决定区分 4 种树体管理模式茶叶的差异性内含物质.结果表明:通过主成分分析法能够将 4 种树体管理模式茶叶分为两大类,一类为藤条大树茶和藤条小树茶,另一类为台地茶和放养型茶.所有内含物质中水浸出物占比最高,茶多酚占比第二,其次为儿茶素.各氨基酸组分中,茶氨酸占比最高,其他均在 1%以下.磷酸丝氨酸、天冬酰胺等更能代表藤条小树茶和藤条大树茶的特征.水浸出物、表没食子儿茶素更能代表台地茶和放养型茶特征.通过对藤条小树茶、藤条大树茶、放养型茶、台地茶 4 种树体管理模式茶叶内含物质进行分析,能够明显区分不同树体管理模式茶叶特征.
Abstract
In Haigong Village,Shuangjiang County,tea plants under four tree management modes of rattan tea(big),rattan tea(small),breed tea and tableland tea were sampled,detected and analyzed,and the principal component analysis method was used to analyze the internal substance contents of the four tree management modes,and the differential internal substance contents of tea that determined to distinguish the four tree management modes were screened out.The results showed that the four tree management modes could be divided into two categories by principal component analysis,one was rattan tea(small)and rattan tea(big),and the other was breed tea and tableland tea.Among all the inclusions,water extract accounted for the highest proportion,tea polyphenols accounted for the second proportion,followed by catechins.Among the amino acid components,theanine accounted for the highest proportion,and the others were all below 1%.Phosphoserine,asparagine,etc.can better represent the characteristics of rattan tea(small)and rattan tea(big).Water extract and epigallocatechin can better represent the characteristics of breed tea and tableland tea.Through the analysis of the tea contents of four tree management modes,namely rattan tea(small),rattan tea(big),breed tea and tableland tea,the tea characteristics of different tree management modes can be clearly distinguished.
基金项目
国家重点研发计划(2021YFD1601104)
国家茶叶产业技术体系(CARS-19)
云南省重大科技专项计划(202102AE090038)
NETL
NSTL
万方数据