Effect of Exogenous Addition of Tea or Pear Juice on the Quality of Meizhan Black Tea

LU Anxia; ZHOU Xinru; YAN Jingna; LAN Tianmeng; OUYANG Ke; ZHAO Xianming; TONG Huarong

doi:10.13386/j.issn1002-0306.2022020136

Volume 44 Issue 2

Jan. 2023

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Science and Technology of Food Industry > 2023 > 44(2): 51-59. > DOI: 10.13386/j.issn1002-0306.2022020136

LU Anxia, ZHOU Xinru, YAN Jingna, et al. Effect of Exogenous Addition of Tea or Pear Juice on the Quality of Meizhan Black Tea[J]. Science and Technology of Food Industry, 2023, 44(2): 51−59. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022020136.

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Effect of Exogenous Addition of Tea or Pear Juice on the Quality of Meizhan Black Tea

1.
Faculty of Agriculture, Forestry and Food Engineerin, Yibin University, Yibin 644000, China
2.
College of Food Science, Southwest University, Chongqing 400715, China
3.
Tea Refining and Innovation Key Laboratory of Sichuan Province, Yibin 644000, China

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Received Date: February 17, 2022
Available Online: November 20, 2022

Graphical Abstract

Abstract

Abstract

In order to explore the effect of exogenous addition of tea or pear juice on the quality of Meizhan Gongfu black tea, fresh leaves of Meizhan cultivars were used as raw material to process Gongfu black tea. During the process, tea juice or pear juice was added with the ratio of tea:tea juice or pear juice was 2:1 (kg:L), and then the overall sensory quality, main taste and aroma substances of the obtained Gongfu black tea were analyzed. The Congfu black tea with no addition during the process was considered as control samples. The results showed that exogenous addition of both tea juice and pear juice could significantly (P<0.05) reduce the contents of epigallocatechin-3-gallate (EGCG), epicatechin-3-gallate (ECG), epigallocatechin (EGC) and epicatechin (EC), and increase the content of theaflavins. The soluble sugar content of Gongfu black tea made by exogenous pear juice was 92.53% and 95.31% higher than that of control and exogenous tea juice, respectively, which enhanced the sweetness of the finished tea soup. Exogenous addition of tea juice could significantly increase the contents of amino acids, caffeine, gallic acid, tea pigments and volatile compounds in Gongfu black tea, among which, the total amount of alcohols, aldehydes, esters and ketones were the highest, and the total amount of volatile compounds was 6.36% and 74.99% higher than that in the control samples and Gongfu black tea prepared by exogenous addition of pear juice, respectively. Geraniol with a characteristic floral aroma and the content in tea juice treatment was 15.73% and 79.64% higher than that in control and pear juice treatment, respectively, and its finished tea aroma showed obvious fruity aroma. Therefore, this study showed that exogenous addition of tea juice could improve the taste and aroma quality of Meizhan Gongfu black tea.
- Gongfu black tea,
- exogenous addition,
- flavor substances,
- tea quality

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References (35)

References

[1]	杨亚军, 梁月荣. 中国无性系茶树品种志（第一版）[M]. 上海: 上海科学技术出版社, 2014: 11 YANG Y J, LIANG Y R. Chronicles of Chinese clone tea tree varieties (first edition)[M]. Shanghai: Shanghai Science and Technology Press, 2014: 11.
[2]	陈岱卉, 叶乃兴, 邹长如. 茶树品种的适制性与茶叶品质[J]. 福建茶叶,2008(1):10−13. [CHEN D H, YE N X, ZOU C R. The suitability of tea varieties and tea quality[J]. Fujian Tea,2008(1):10−13. doi: 10.3969/j.issn.1005-2291.2008.01.001
[3]	陈秀英. 梅占品种加工红茶工艺探讨[J]. 茶叶学报,2013(4):51−53. [CHEN X Y. Discussion on the processing technology of Meizhan variety black tea[J]. Journal of Tea,2013(4):51−53. doi: 10.3969/j.issn.1007-4872.2013.04.012
[4]	朱宏凯, 何华锋, 叶阳, 等. 温度对工夫红茶揉捻理化品质的影响[J]. 现代食品科技,2017(5):174−181. [ZHU H K, HE H F, YE Y, et al. Influence of temperature on kneading physical and chemical quality of Gongfu black tea[J]. Modern Food Science and Technology,2017(5):174−181. doi: 10.13982/j.mfst.1673-9078.2017.5.027
[5]	蒋金星, 何华锋, 褚飞洋, 等. 揉捻温度对工夫红茶滋味品质的影响[J]. 食品工业科技,2017,38(7):90−95. [JIANG J X, HE H F, CHU F Y, et al. Effect of kneading temperature on the taste and quality of Gongfu black tea[J]. Science and Technology of Food Industry,2017,38(7):90−95. doi: 10.13386/j.issn1002-0306.2017.07.009
[6]	叶飞, 高士伟, 郑鹏程, 等. 利用砂梨多酚氧化酶减少夏秋红茶苦涩味研究[J]. 湖北农业科学,2012,51(24):5685−5689. [YE F, GAO S W, ZHENG P C, et al. Study on the reduction of bitterness and astringency in summer and autumn black tea by using polyphenol oxidase of pear pear[J]. Hubei Agricultural Science,2012,51(24):5685−5689. doi: 10.3969/j.issn.0439-8114.2012.24.038
[7]	TANAKA T, MIYATA Y, TAMAYA K, et al. Increase of theaflavin gallates and thearubigins by acceleration of catechin oxidation in a new fermented tea product obtained by the tea-rolling processing of loquat (Eriobotrya japonica) and green tea leaves[J]. Journal of Agricultural & Food Chemistry,2009,57(13):5816−5822.
[8]	TANAKA T, MATSUO Y, KOUNO I. Chemistry of secondary polyphenols produced during processing of tea and selected foods[J]. International Journal of Molecular Sciences,2010,11(1):14−40.
[9]	叶飞, 高士伟, 龚自明. 砂梨多酚氧化酶处理对夏秋红茶品质的影响[J]. 食品科学,2013,34(23):92−95. [YE F, GAO S W, GONG Z M. Effects of pear polyphenol oxidase treatment on the quality of summer and autumn black tea[J]. Food Science,2013,34(23):92−95.
[10]	周颖, 谭婷, 罗勇, 等. 不同加工处理对工夫红茶呈味成分的影响[J]. 茶叶通讯,2015,42(2):29−34. [ZHOU Y, TAN T, LUO Y, et al. Effects of different processing treatments on the flavor components of Gongfu black tea[J]. Tea Newsletter,2015,42(2):29−34. doi: 10.3969/j.issn.1009-525X.2015.02.006
[11]	程启坤. 红茶色素的系统分析法[J]. 中国茶叶,1981(1):18. [CHENG Q K. Systematic analysis of black tea pigments[J]. China Tea,1981(1):18.
[12]	MAO S, LU C, LI M, et al. Identification of key aromatic compounds in Congou black tea by partial least-square regression with variable importance of projection scores and gas chromatography-mass spectrometry/gas chromatography-olfactometry[J]. Journal of the Science of Food & Agriculture,2018,98(14):5278−5286.
[13]	CHEN Q, ZHAO J, ZHANG H, et al. Feasibility study on qualitative and quantitative analysis in tea by near infrared spectroscopy with multivariate calibration[J]. Analytica Chimica Acta,2006,572(1):77−84. doi: 10.1016/j.aca.2006.05.007
[14]	HO C T, ZHENG X, LI S. Tea aroma formation[J]. Food Science & Human Wellness,2015,4(1):9−27.
[15]	姚改芳, 张绍铃, 曹玉芬, 等. 不同栽培种梨果实中可溶性糖组分及含量特征[J]. 中国农业科学,2010,43(20):4229−4237. [YAO G F, ZHANG S L, CAO Y F, et al. Composition and content characteristics of soluble sugar in pear fruits of different cultivars[J]. China Agricultural Science,2010,43(20):4229−4237. doi: 10.3864/j.issn.0578-1752.2010.20.014
[16]	XU Y Q, HU X F, ZOU C, et al. Effect of saccharides on sediment formation in green tea concentrate[J]. LWT-Food Science and Technology,2017,78:352−360. doi: 10.1016/j.lwt.2017.01.003
[17]	尚卫琼, 陈春林, 孙承冕, 等. 云南大叶种茶多酚和咖啡碱对红茶品质的影响[J]. 江苏农业科学,2021,49(1):155−159. [SHANG W Q, CHEN C L, SUN C M, et al. Effects of Yunnan large-leaf tea polyphenols and caffeine on black tea quality[J]. Jiangsu Agricultural Science,2021,49(1):155−159. doi: 10.15889/j.issn.1002-1302.2021.01.028
[18]	CAO Q Q, ZOU C, ZHANG Y H, et al. Improving the taste of autumn green tea with tannase[J]. Food Chemistry,2019,277:432−437. doi: 10.1016/j.foodchem.2018.10.146
[19]	张盼, 胡月, 唐晗, 等. 儿茶素氧化物的结构, 形成机理及生物活性研究进展[J]. 现代食品,2020(8):72−75. [ZHANG P, HU Y, TANG H, et al. Research progress on the structure, formation mechanism and biological activity of catechin oxides[J]. Modern Food,2020(8):72−75.
[20]	DZHEMUKHADZE K M. The significance of catechins in tea manufacture[J]. In Biochemistry and Advanced Technology of Tea Manufacture,1966:167.
[21]	JOSHI R, GULATI A. Fractionation and identification of minor and aroma-active constituents in Kangra orthodox black tea[J]. Food Chemistry,2015,167:290−298. doi: 10.1016/j.foodchem.2014.06.112
[22]	LEE L S, KIM Y C, PARK J D, et al. Changes in major polyphenolic compounds of tea (Camellia sinensis) leaves during the production of black tea[J]. Food Science & Biotechnology,2016,25(6):1523−1527.
[23]	STODT U W, BLAUTH N, NIEMANN S, et al. Investigation of processes in black tea manufacture through model fermentation (oxidation) experiments[J]. Journal of Agricultural and Food Chemistry,2014,62(31):7854−7861. doi: 10.1021/jf501591j
[24]	YANG Z. Recent studies of the volatile compounds in tea[J]. Food Research International,2013,2(53):585−599.
[25]	WANG Z, HAN B, JING W, et al. Effects of different steeping temperatures on the leaching of aroma components in black tea by SPME-GC-MS coupled with chemometric method[J]. Journal of AOAC International,2019(6):1834−1844.
[26]	王梦琪, 朱荫, 张悦, 等. 茶叶挥发性成分中关键呈香成分研究进展[J]. 食品科学,2019,40(23):341−349. [WANG M Q, ZHU Y, ZHANG Y, et al. Research progress on key aroma components in volatile components of tea[J]. Food Science,2019,40(23):341−349. doi: 10.7506/spkx1002-6630-20181015-132
[27]	QIN Z, PANG X, CHEN D, et al. Evaluation of Chinese tea by the electronic nose and gas chromatography-mass spectrometry: Correlation with sensory properties and classification according to grade level[J]. Food Research International,2013,53(2):864−874. doi: 10.1016/j.foodres.2013.02.005
[28]	李琛, 岳翠男, 杨普香, 等. 工夫红茶特征香气研究进展[J]. 食品安全质量检测学报,2021,12(22):8834−8842. [LI C, YUE C N, YANG P X, et al. Research progress on the characteristic aroma of Gongfu black tea[J]. Journal of Food Safety and Quality Inspection,2021,12(22):8834−8842. doi: 10.19812/j.cnki.jfsq11-5956/ts.2021.22.028
[29]	毛世红. 基于风味组学的工夫红茶品质分析与控制研究[D]. 重庆: 西南大学, 2018 MAO S H. Quality analysis and control of Gongfu black tea based on flavoromics[D]. Chongqing: Southwest University, 2018.
[30]	汪蓓, 舒娜, 陆安霞, 等. 不同杀青温度对绿茶香型形成的影响[J]. 食品与发酵工业,2020,46(4):197−203. [WANG B, SHU N, LU A X, et al. Effects of different greening temperatures on green tea aroma formation[J]. Food and Fermentation Industry,2020,46(4):197−203. doi: 10.13995/j.cnki.11-1802/ts.022586
[31]	XL A, JY A, BEI W A, et al. Identification of key odorants responsible for cooked corn-like aroma of green teas made by tea cultivar 'Zhonghuang 1'[J]. Food Research International,2020:136.
[32]	DAVIS A P, GOODSALL C, CAI Y, et al. Black tea dimeric and oligomeric pigments—Structures and formation[M]. Plant Polyphenols, 1999: 697−724.
[33]	王坤波, 刘仲华, 赵淑娟, 等. 梨多酚氧化酶同工酶组成及其对茶黄素合成的影响[J]. 湖南农业大学学报(自科版),2007,33(4):459−462. [WANG K B, LIU Z H, ZAZO S J, et al. Composition of pear polyphenol oxidase isoenzymes and their effects on theaflavin synthesis[J]. Journal of Hunan Agricultural University (Self-Science Edition),2007,33(4):459−462.
[34]	ASIL M H, RABIEI B, ANSARI R H. Optimal fermentation time and temperature to improve biochemical composition and sensory characteristics of black tea[J]. Australian Journal of Crop Science,2012,6(3):550−558.
[35]	PANG X, QIN Z, ZHAO L, et al. Development of regression model to differentiate quality of black tea (Dianhong): Correlate aroma properties with instrumental data using multiple linear regression analysis[J]. International Journal of Food Science & Technology,2012,47(11):2372−2379.