Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan
Eighteen sun-dried tea samples were selected from six major tea-producing regions in Yunnan Province, namely Xishuangbanna, Pu'er, Lincang, Baoshan, Dehong and Yuxi to use for this study. In this study, these samples' biochemical components such as moisture, water leachate, caffeine, tea p...
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| Format: | Article |
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The editorial department of Science and Technology of Food Industry
2023-02-01
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| Series: | Shipin gongye ke-ji |
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| Online Access: | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022040154 |
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| author | Qinghua WANG Hui LUO Chunyan LIU Huaqiang WU Xiaoyang GUAN Jingzhu ZHAO Ling ZHOU Jianping HE Changdi WU |
| author_facet | Qinghua WANG Hui LUO Chunyan LIU Huaqiang WU Xiaoyang GUAN Jingzhu ZHAO Ling ZHOU Jianping HE Changdi WU |
| author_sort | Qinghua WANG |
| collection | DOAJ |
| description | Eighteen sun-dried tea samples were selected from six major tea-producing regions in Yunnan Province, namely Xishuangbanna, Pu'er, Lincang, Baoshan, Dehong and Yuxi to use for this study. In this study, these samples' biochemical components such as moisture, water leachate, caffeine, tea polyphenols and free amino acids were tested and their sensory evaluations were conducted. The quality differences of sun-dried tea from different regions in Yunnan Province were investigated by means of index correlation analysis, principal component analysis, cluster analysis and quality appellation analysis, and high-quality production regions were screened. The results showed that the quality indicators of different regional sun-dried tea had differences and there were some correlations among the quality indicators. Among them, the water leachate content showed correlation with the content of tea polyphenol and leaf base (P<0.05). Similarly, the content of amino acid and caffeine, aroma and taste showed a correlation (P<0.05). Besides, the average values of moisture, water leachate, caffeine, tea polyphenols and free amino acids of sun-dried tea from Yuxi region were 8.08%, 52.82%, 4.81% and 27.78%, and 4.64%, respectively, which were higher than those of other regions. The sun-dried tea from Xishuangbanna had the highest phenolamine ratio (8.94), and the overall quality of sun-dried tea samples from Yuxi and Xishuangbanna regions was better than other regions. Making a cross-analysis of the previous classification of suitable regions for tea cultivation in Yunnan Province and the results of this study on the comprehensive evaluation of the quality of sun-dried tea from different regions. It showed that Xishuangbanna not only has very suitable climate for tea cultivation, but also could product high quality sun-dried tea. The above results could indicate the differences in the quality of sun-dried tea from different regions in Yunnan. Moreover, it could provide references for the production of high quality pu-erh tea products in the future. |
| first_indexed | 2024-04-10T16:38:52Z |
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| id | doaj.art-5d1cc196977b42a6bfde0562f165219b |
| institution | Directory Open Access Journal |
| issn | 1002-0306 |
| language | zho |
| last_indexed | 2024-04-10T16:38:52Z |
| publishDate | 2023-02-01 |
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| spelling | doaj.art-5d1cc196977b42a6bfde0562f165219b2023-02-08T08:00:16ZzhoThe editorial department of Science and Technology of Food IndustryShipin gongye ke-ji1002-03062023-02-0144434535110.13386/j.issn1002-0306.20220401542022040154-4Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of YunnanQinghua WANG0Hui LUO1Chunyan LIU2Huaqiang WU3Xiaoyang GUAN4Jingzhu ZHAO5Ling ZHOU6Jianping HE7Changdi WU8College of Tea, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650201, ChinaYunnan Kun Ship Design Research Institute Co., Ltd., Kunming 650051, ChinaYunnan Kun Ship Design Research Institute Co., Ltd., Kunming 650051, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650201, ChinaEighteen sun-dried tea samples were selected from six major tea-producing regions in Yunnan Province, namely Xishuangbanna, Pu'er, Lincang, Baoshan, Dehong and Yuxi to use for this study. In this study, these samples' biochemical components such as moisture, water leachate, caffeine, tea polyphenols and free amino acids were tested and their sensory evaluations were conducted. The quality differences of sun-dried tea from different regions in Yunnan Province were investigated by means of index correlation analysis, principal component analysis, cluster analysis and quality appellation analysis, and high-quality production regions were screened. The results showed that the quality indicators of different regional sun-dried tea had differences and there were some correlations among the quality indicators. Among them, the water leachate content showed correlation with the content of tea polyphenol and leaf base (P<0.05). Similarly, the content of amino acid and caffeine, aroma and taste showed a correlation (P<0.05). Besides, the average values of moisture, water leachate, caffeine, tea polyphenols and free amino acids of sun-dried tea from Yuxi region were 8.08%, 52.82%, 4.81% and 27.78%, and 4.64%, respectively, which were higher than those of other regions. The sun-dried tea from Xishuangbanna had the highest phenolamine ratio (8.94), and the overall quality of sun-dried tea samples from Yuxi and Xishuangbanna regions was better than other regions. Making a cross-analysis of the previous classification of suitable regions for tea cultivation in Yunnan Province and the results of this study on the comprehensive evaluation of the quality of sun-dried tea from different regions. It showed that Xishuangbanna not only has very suitable climate for tea cultivation, but also could product high quality sun-dried tea. The above results could indicate the differences in the quality of sun-dried tea from different regions in Yunnan. Moreover, it could provide references for the production of high quality pu-erh tea products in the future.http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022040154sun-dried teaphysicochemical compositionsensory evaluationquality |
| spellingShingle | Qinghua WANG Hui LUO Chunyan LIU Huaqiang WU Xiaoyang GUAN Jingzhu ZHAO Ling ZHOU Jianping HE Changdi WU Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan Shipin gongye ke-ji sun-dried tea physicochemical composition sensory evaluation quality |
| title | Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan |
| title_full | Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan |
| title_fullStr | Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan |
| title_full_unstemmed | Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan |
| title_short | Comparative Analysis on Quality of Sun-dried Tea from Main Tea Production Areas of Yunnan |
| title_sort | comparative analysis on quality of sun dried tea from main tea production areas of yunnan |
| topic | sun-dried tea physicochemical composition sensory evaluation quality |
| url | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022040154 |
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