西湖龙井茶生化成分与感官品质的相关性研究 |
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引用本文: | 赵素芬,刘晓艳.西湖龙井茶生化成分与感官品质的相关性研究[J].安徽农业科学,2010,38(12):6197-6198. |
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作者姓名: | 赵素芬 刘晓艳 |
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作者单位: | 中山火炬职业技术学院包装印刷系,广东中山,528436;中山火炬职业技术学院包装印刷系,广东中山,528436 |
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摘 要: | 目的]为客观评价龙井茶的劣变提供依据。方法]选择了几种典型具有代表性的包装材料进行了茶叶贮藏试验,采用多元线性回归研究了主要生化成分(含水量、茶多酚、氨基酸、水溶性浸出物、抗坏血酸和咖啡碱)与感官品质的相关性。结果]抗坏血酸的氧化程度与龙井茶的感官品质劣变程度关系最为密切,达到了极显著相关性(0.997,P〈0.01),并且两者存在显著的线性关系:即y(感官品质)=70.255+93.776x(抗坏血酸含量)。结论]可以由抗坏血酸的含量表征龙井茶品质劣变程度,相比带有主观因素的感官评价更精确。
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关 键 词: | 阻隔性包装材料 生化成分 感官品质 相关性 多元线性回归 |
Study on the Correlation between the Biochemical Component and the Sensor Quality of West Lake Longjing Tea Packed by Different Packing Material |
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Institution: | ZHAO Su-fen et al(Department of Packing & Pprinting,Zhongshan Torch Vocational Technica Colloge,Zhongshan,Guangdong 528436) |
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Abstract: | Objective] The basis of the objective evaluation of West Lake Longjing Tea was provided.Method] The correlation between the biochemical components(the content of water,the tea polyphenols,the amino acid,the water-soluble extract,the ascorbic acid and the caffeine)in the tea,which was packed in several typical package materials for fresh-keeping,and its sensor quality were analyzed with the method of multiple linear regression.Results] The results showed that there was a closest relation between the oxidative degree of ascorbic acid and sensor quality,which was at the significant level of 0.997(P<0.01).And also the linear relation between both of them was y(sensor quality)= 70.255+93.776x(the content of ascorbic acid).Conclusion] The content of ascorbic acid could be taken as the index of tea quality,which would be more objective and accurate in the evaluation of its quality. |
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Keywords: | Package material with the barrier property Biochemical component Sensor quality Correlation Multiple linear regression analysis |
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