从茶多酚及氨基酸含量比较8种金花茶制茶适宜性

Evaluation on Tea-process Fitness of Eight Yellow Camellias Based on Tea Polyphenols and Amino Acids

关键词:  金花茶  茶多酚  氨基酸  制茶适宜性

Key words:  yellow camellias  tea polyphenols  amino acids  tea-process fitness

摘要:

测定金花茶(Camelia nitidisima)、长柱金花茶(C.nitidisima form longistyla)、显脉金花茶(C.euphlebia)、平果金花茶(C.pingguoensis)、东兴金花茶(C.tunghinensis)、毛瓣金花茶(C.pubipetala)、毛籽金花茶(C.ptilosperma)、大样岗金花茶(C.longganensis var.grandis)的茶多酚类物质和氨基酸含量,并与市售茶叶(昭平仙回茶和灵山中秀福云绿茶)作对照。结果表明,各种金花茶的上述成分含量差异甚大,其中毛瓣金花茶幼叶多酚类物质含量最高(11.7%),但低于仙回茶(18.25%)和福云绿茶(16.62%)。在所有试材中,毛瓣金花茶幼叶的氨基酸含量最高(6.3%)。8种金花茶(幼叶和成熟叶)酚/氨为0.6~3.1,均低于仙回茶(3.4)和福云绿茶(4.1);综合评分为9.4~64.9。毛瓣金花茶幼叶综合评分最高,但也低于2种市售茶。

Abstract:

The contents of tea polyphenols and amino acids in fresh leaves of Camellia nitidissima,C.nitidissima form longistyla, C.euphlebia,C.pingguoensis,C.tunghinensis.C.pubipetala,C.ptilosperma,C.longganensis var. grandis were examined for estimating the tea-process fitness of the yellow camellias,and the two common teas (Xianhui tea and Fuyun green tea) from market were also employed. The results showed that tea polyphenols and amino acids were different between the camellias. C. pubipetala had the highest tea polyphenols(11.7%,yong leaves) in all species, lower than Xianhui tea(18.25%) and Fuyun green tea(16.62%),but it had the highest content of amino acids(6.3%,yong leaves) in all matrials, and had a top mark in the comprehensive scoring for yong leaves or mature leaves in all species. The ratio of tea polyphenol to amino acid was 0.6~3.1 in all species,lower than Xianhui tea(3.4) and Fuyun green tea (4.1).