Full
Outline
To evaluate the quality of Camellia sinensis cv Baohongcha. green tea in Kunming, and identify its key quality indicators.
A total of 9 quality indicators, including water extract, tea polyphenols, catechins, free amino acids (calculated as glutamic acid), theanine, caffeine, theaflavins, polysaccharides (calculated as glucose) and total flavonoids (calculated as rutin), were determined in 31 batches of Camellia sinensis cv Baohongcha. green tea samples collected from Yiliang County, the main producing area of Kunming. Pearson correlation analysis, hierarchical cluster analysis and principal component analysis were adopted for data analysis.
The 9 individual indicators were integrated into 2 independent comprehensive components F1 and F2 by principal component analysis. The contribution rates of F1 and F2 were 41.33% and 15.20%, respectively, with a cumulative contribution rate of 56.53%. The 6 key evaluation indicators were screened out, namely water extract, tea polyphenols, catechins, caffeine, free amino acids and theanine.
The 6 key quality indicators of Camellia sinensis cv Baohongcha. green tea are analyzed in depth. The results shows that the overall quality indicators of Camellia sinensis cv Baohongcha. tea are excellent, which endows the tea with typical characteristics of high-aroma green tea: Yellowish-green and bright liquor color, fresh and brisk taste with sweet aftertaste, and rich fragrance. It is suggested to further construct and optimize the standard system for the whole industrial chain of Camellia sinensis cv Baohongcha. tea.
10
2
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
