不同类型水质对龙井茶汤风味品质及主要化学成分的影响

doi:10.13305/j.cnki.jts.2020.02.008

Abstract

Abstract: In order to understand the effect of water quality on the flavor of tea infusions, six typical drinking water (including tap water, Wahaha Purified water, Hupao cold spring water, C cell vitality small molecule group water, 5100 Tibet glacier mineral water, Jianlong volcano cold mineral water) were selected as the research objects. The effects of different types of water quality on the flavor quality and chemical composition of tea infusions were studied by sensory evaluation and component analysis. The results show that the purified water and Hupao cold spring water were weakly acidic, and had low Ca²⁺, Mg²⁺and total ion contents, which were more suitable to brew Longjing tea. In terms of the quality of flavor, it could better control the bitterness, astringency and freshness of tea soup, and reflect the richness and purity of the unique aroma of the tea infusions. Through the analysis of flavor substances, with the increase of ion concentration of drinking water, the contents of tea polyphenols, amino acids, EGCG, ester catechins and oxalic acid in the tea infusions were significantly reduced. The contents of caffeine and total sugar were not significantly different. The flavonoid content slightly increased. The mineral water with higher concentrations of Ca²⁺ and Mg²⁺ effectively inhibited the release of 17 characteristic aroma components of Longjing tea infusions, such as linalool, Trans-butyrate-3-hexene ester, dodecane, tetradecyl, cis-3-Hexenyl isovalerate, geraniol and β-ionone. This study analyzed the effect of water quality on the composition of tea flavor substances and the volatility of aroma substances, and preliminarily determined that the water quality factor was the main reason for the taste difference of Longjing tea infusions. This research preliminarily illuminated the effect of water quality on the flavor composition and aroma volatilization of tea infusions,and the results provided a theoretical basis for tea flavor chemistry, scientific tea making and water selection for tea beverage manufacturing.

Key words: water quality, tea infusions, chemical composition, aroma, organoleptic evaluation

CLC Number:

GONG Zhiping, YIN Junfeng, CHEN Gensheng. Effects of Different Types of Water Quality on the Sensory Properties and Main Chemcial Compositions of Longjing Tea Infusions[J]. Journal of Tea Science, 2020, 40(2): 215-224.

References

[1] 季玉琴, 徐正炳, 金寿珍. 浅谈液体饮料茶的用水[J]. 中国茶叶, 1989(3): 16-17.
Ji Y Q, Xu Z B, Jin S Z.Talk about the water of liquid beverage tea[J]. China Tea, 1989(3): 16-17.
[2] 尹军峰, 许勇泉, 陈建新, 等. 主要金属离子对冷溶性速溶绿茶复水后品质的影响[J]. 食品科学, 2009, 30(7): 99-105.
Yin J F, Xu Y Q, Chen J X, et al.Effects of main metal ions on quality of cold soluble instant green tea[J]. Food Science, 2009, 30(7): 99-105.
[3] 江春柳, 孙云, 岳鹏翔, 等. 不同水质对绿茶饮料储藏特性的影响[J]. 茶叶科学, 2010, 30(增1): 561-566.
Jiang C L, Sun Y, Yue P X, et al.Effect of water quality on the storage characteristics of green tea beverages[J]. Journal of Tea Science, 2010, 30(z1): 561-566.
[4] 尹军峰, 许勇泉, 陈根生, 等. 影响龙井茶汤品质的主要水质因素分析[J]. 中国茶叶, 2018, 40(6): 20-23.
Yin J F, Xu Y Q, Chen G S, et al.Analysis of the main water quality factors affecting the quality of Longjing tea infusions[J]. China Tea, 2018, 40(6): 20-23.
[5] 全国茶叶标准化技术委员会. 茶叶感官审评方法: GB/T 23776—2018[S]. 北京: 中国标准出版社, 2018: 18.
National Tea Standardization Technical Committee. Methodology for sensory evaluation of tea: GB/T 23776—2018 [S]. Beijing: China Standards Press, 2018: 18.
[6] 尹军峰. 水质对龙井茶风味品质的影响及其机制[D]. 杭州: 浙江工商大学, 2015.
Yin J F.Effect of water quality on flavor quality of Longjing tea infusion and its mechanism [D]. Hangzhou: Zhejiang Gongshang University, 2015.
[7] 尹军峰, 许勇泉, 袁海波, 等. 名优绿茶鲜叶摊放过程中主要生化成分的动态变化[J]. 茶叶科学, 2009, 29(2): 102-110.
Yin J F, Xu Y Q, Yuan H B, et al.Dynamic change of main biochemical components of premium green tea fresh leaves during spreading[J]. Journal of Tea Science, 2009, 29(2): 102-110.
[8] 中国国家标准化管理委员会. 茶叶中茶多酚和儿茶素类含量的检测方法: GB/T 8313—2018[S]. 北京: 中国标准出版社, 2018: 1-5.
China National Standardization Management Committee. Determination of total polyphenols and catechins content in tea: GB/T 8313—2018 [S]. Beijing: China Standards Press, 2018: 1-5.
[9] 中国国家标准化管理委员会. 茶游离氨基酸总量的测定: GB/T 8314—2013[S]. 北京: 中国标准出版社, 2013: 1-5.
China National Standardization Management Committee. Tea—Determination of free amino acids content: GB/T 8314—2013 [S]. Beijing: China Standards Press, 2013: 1-5.
[10] 钟罗. 茶叶品质理化分析[M]. 上海: 上海科学技术出版社, 1989: 449-451.
Zhong L.Physical and chemical analysis of tea quality [M]. Shanghai: Shanghai Scientific and Technical Publishers, 1989: 449-451.
[11] 石元值, 马立峰, 韩文炎, 等. 茶叶中磷、钾、铅、锌等17种元素的快速测定方法研究化[J]. 食品科学, 2006, 27(1): 193-196.
Shi Y Z, Ma L F, Han W Y, et al.Study on simultaneous determination of phosphorus potassium lead Zinc etc. altogether 17 elements in tea[J]. Food Science, 2006, 27(1): 193-196.
[12] 张英娜, 陈根生, 刘阳, 等. 烘青绿茶苦涩味及其滋味贡献物质分析[J]. 茶叶科学, 2015, 35(4): 377-383.
Zhang Y N, Chen G S, Liu Y, et al.Analysis of the bitter and astringent taste of baked green tea and their chemical contributors[J]. Journal of Tea Science, 2015, 35(4): 377-383.
[13] 刘阳, 陈根生, 许勇泉, 等. 冲泡过程中西湖龙井茶黄酮苷类浸出特性及滋味贡献分析[J]. 茶叶科学, 2015, 35(3): 217-224.
Liu Y, Chen G S, Xu Y Q, et al.Study on organic acids contents in tea leaves and its extracting characteristics[J]. Journal of Tea Science, 2015, 35(3): 217-224.
[14] 陈根生, 许勇泉, 高颖, 等. 响应面法优化龙井茶中黄酮化合物提取工艺[J]. 茶叶, 2017, 43(3): 146-152.
Chen G S, Xu Y Q, Gao Y, et al.Optimization of flavonoids extraction from Longjing tea by response surface methodology[J]. Journal of Tea, 2017, 43(3): 146-152.
[15] 刘盼盼, 钟小玉, 许勇泉, 等. 茶叶中有机酸及其浸出特性研究[J]. 茶叶科学, 2013, 33(5): 405-410.
Liu P P, Zhong X Y, Xu Y Q, et al.Study on organic acids contents in tea leaves and its extracting characteristics[J]. Journal of Tea Science, 2013, 33(5): 405-410.
[16] 杨贤强, 王岳飞, 陈留记. 茶多酚化学[M]. 上海: 上海科学技术出版社, 2003: 32-41.
Yang X Q, Wang Y F, Chen L J.Tea polyphenol chemistry [M]. Shanghai: Shanghai Scientific and Technical Publishers, 2003: 32-41.
[17] 胡秀芳, 沈生荣, 朴宰日, 等. 茶多酚抗氧化机理研究现状[J]. 茶叶科学, 1999, 19(2): 93-103.
Hu X F, Shen S R, Pu Z R, et al.Review on antioxidative mechanism of tea polyphenols[J]. Journal of Tea Science, 1999, 19(2): 93-103.
[18] 萧伟祥, 宛晓春, 胡耀武, 等. 茶儿茶素体外氧化产物分析[J]. 茶叶科学, 1999, 19(2): 145-149.
Xiao W X, Wan X C, Hu Y W, et al.Study on the in vitro oxidation product of tea catechins[J]. Journal of Tea Science, 1999, 19(2): 145-149.
[19] 王坤波, 刘仲华, 黄建安. 儿茶素体外氧化制备茶黄素的研究[J]. 茶叶科学, 2004, 24(1): 53-59.
Wang K B, Liu Z H, Huang J A.Studies on preparing theaflavins from oxidation of tea catechins in vitro[J]. Journal of Tea Science, 2004, 24(1): 53-59.
[20] Richard Murphy, 敖志刚. 溯本清源明确螯合物的概念[J]. 饲料与畜牧, 2009, 23(3): 8-9.
Richard M, Ao Z G, What is chelates?[J]. Fodder and Animal Husbandry, 2009, 23(3): 8-9.
[21] 吴玉臣, 王艳玲, 杨国宇, 等. 微量元素氨基酸螯合物的研究新进展[J]. 动物营养, 2003, 12(20): 48-50.
Wu Y C, Wang Y L, Yang G Y, et al.New development of amino acid chelates of trace elements[J]. Animal Nutrition, 2003, 12(20): 48-50.
[22] Xu Y Q, Chen G S, Du Q Z, et al.Sediments in concentrated green tea during low-temperature storage[J]. Food Chemistry, 2014(149): 137-143.
[23] 王楠. 关键工艺对红茶饮料色泽及浑浊度的研究[D]. 保定: 河北农业大学, 2013.
Wang N.Research on the influence on key technology to color and turbidity of black tea beverage [D]. Baoding: Hebei Agricultural University, 2013.
[24] Scharbert S, Jezussek M, Hofmann T.Evaluation of the taste contribution of theaflavins in black tea infusions using the taste activity concept[J]. European Food Research and Technology, 2004, 218(5): 442-447.
[25] 王梦琪, 邵晨阳, 朱荫, 等. 龙井茶香气成分的产区差异分析[J]. 茶叶科学, 2018, 38(5): 508-517.
Wang M Q, Shao C Y, Zhu Y, et al.Aroma constituents of Longjing tea produced in different areas[J]. Journal of Tea Science, 2018, 38(5): 508-517.
[26] 刘盼盼, 许勇泉, 尹军峰, 等. 主要水质因子对清香型黄山毛峰茶挥发性成分的影响[J]. 中国食品学报, 2016, 16(1): 245-256.
Liu P P, Xu Y Q, Yin J F, et al.Effect of main water quality factors on volatile components of Huangshan Maofeng tea with faint scent[J]. Journal of Chinese Institute of Food Science and Technology, 2016, 16(1): 245-256.
[27] 倪春梅. 《软饮料工艺学》水硬度表示方法换算关系的探讨[J]. 内蒙古农业大学学报(社会科学版), 2009, 11(1): 156-157.
Ni C M.Soft drink technology Discussion on conversion relation of water hardness expression method[J]. Journal of Inner Mongolia Agricultural University (Social Sciences Edition), 2009, 11(1): 156-157.
[28] 尹军峰, 许勇泉, 陈根生, 等. 不同类型饮用水对西湖龙井茶风味及主要品质成分的影响[J]. 中国茶叶, 2018, 40(5): 21-26.
Yin J F, Xu Y Q, Chen G S, et al.Effect of different types of drinking water on the flavor and main quality components of Xihu Longjing tea[J]. China Tea, 2018, 40(5): 21-26.
[29] 孔德栋, 赵悦伶, 王岳飞, 等. 茶多酚对肿瘤免疫逃逸的抑制机制研究进展[J]. 浙江大学学报, 2018, 44(5): 539-548.
Kong D D, Zhao Y L, Wang Y F, et al.Review on inhibition mechanism of tea polyphenols against tumor immune escape[J]. Journal of Zhejiang University (Agriculture & Life Sciences), 2018, 44(5): 539-548.
[30] 王岳飞, 徐平. 茶文化与健康[M]. 北京: 北京教育出版社, 2014: 34-46.
Wang Y F, Xu P.Tea culture and health [M]. Beijing: Beijing Education Press, 2014: 34-46.

Effects of Different Types of Water Quality on the Sensory Properties and Main Chemcial Compositions of Longjing Tea Infusions

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