摘要
为了更好地认识和利用西双版纳州大树茶,为大树茶研究提供科学的理论基础,采用分光光度计法及高效液相色谱法测定云南西双版纳7个产地大树茶(晒青毛茶)在春、夏、秋3个季节的生化成分,并用感官审评方法评定各项品质因子。结果表明,不论是春季、夏季、秋季采制的7个产地大树茶内含物质均很丰富;同一季节,7个产地大树茶的水浸出物、茶多酚、可溶性糖含量差异显著。HPLC分析发现,7个产地大树茶氨基酸、儿茶素组成无显著差异;茶氨酸占总量的50%以上,酯型儿茶素占总量的60%以上。三迈大树茶氨基酸、可溶性糖含量较高。大多数产地茶多酚、儿茶素含量夏、秋茶高于春茶;氨基酸含量春茶最高,其次是秋茶、夏茶;可溶性糖、咖啡碱含量春茶高于夏、秋茶。感官审评发现7个产地大树茶在汤色、香气、滋味、叶底各方面表现良好。
In order to know and use preferably big basis of scientific in the big plant tea research. In the plant tea in Xishuangbanna and provide the theoretical spring, summer and autumn, the biochemical composition of big plant tea （crude green tea） of seven areas in Xishuangbanna of Yunnan was determined by spectrophotometer and high performance liquid chromatographic method. Its quality factor was assessed by the method of organoleptic evaluation. The results showed that contain substances of big plant tea of seven areas were very rich in the spring, summer and autumn; in the same season, water extracts, polyphenols, soluble sugar content had significant differences. HPLC analysis found that the composition of amino acids and catechin had no significant differences, the theanine accounted for 50% of the total, esterified catechins accounted for more than 60% of the total. The amino acids and soluble sugar content of Sanmai big plant tea was higher. Tea polyphenols and catechins of summer and autumn tea was higher than spring tea; amino acids of spring tea was higher than autumn and summer tea; soluble sugar content and caffeine of spring tea was higher than summer and autumn tea. The organoleptic evaluation showed that the quality of big plant tea （crude green tea） of seven areas were well in the liquid color, aroma, flavour and infused leaves.
出处
《中国农学通报》
CSCD
2012年第28期297-303,共7页
Chinese Agricultural Science Bulletin
基金
云南省企业技术中心创新能力建设(2009D1037)
关键词
西双版纳
大树茶
品质
Xishuangbanna
big plant tea
quality
