Chemical compositionApart from geographical difference and processing method, the maturity of fresh tea shoot is an important factor that determines tea quality. However, the quality development and chemical variation of green tea with tea shoot maturity remain unclear. This study aimed to investigate ...
The relative abundance of Group I increased with tea shoot maturity whereas that of Group II decreased. These findings can be used in guiding the production of green tea. 展开 关键词: Green tea Tea shoot maturity Taste and aroma quality Chemical composition ...
Chemical Constituents of Crude Green Tea, the Material of Pu-er Tea in Yunnan Twenty phenolic compounds together with caffeine, were isolated from crude materials of Pu-Er tea produced in Yunnan Province, China. They were identified ... ZH Zhou,CR Yang - 《Acta Botanica Yunnanica》 被引量:...
Changes of chemical composition and source apportionment of PM2.5 during 2013-2017 in urban Handan, China China implemented the National Air Pollution Prevention and Control Action Plan since 2013, aiming at significantly improving air quality in major areas an... L Zhao,L Wang,J Tan,... - 《...
To reveal the characteristic chemical profiles of Pu-erh raw tea (PRT) and traditional green tea (TGT), a high-throughput analytical method based on UPLC-Q-Orbitrap-MS/MS was proposed. 145 components were characterized with a three-level qualitative strategy and the integrated filtering strategy ...
Chemical composition and biological activities of the infusion of leaves of Campomanesia guazumifolia (Cambess.) O.Berg: Tea with nutraceutical and medicin... TheCampomanesia guazumifolialeaves infusion has gallic acid, rutin and caffeine.The infusion ofCampomanesia guazumifolialeaves a source ...
The chemical composition, thermal stability, antioxidant properties, and physicochemical properties of the oils were determined. 展开 关键词: Antioxidant activity Chemical composition Fatty acid Tea seed oil Thermal stability DOI: 10.1002/ejlt.201400259 被引量: 7 ...
The Forest regression model revealed that the suitable brewing time ranges between 4 and 10 in the chosen Dahongpao tea variety. This study provides a scientific method and suitable steeping times for the drinking of different Dahongpao tea through dynamic analysis of quantity of chemical composition...
Effect of chemical composition of black tea infusion on the color of milky tea 10.1016/j.foodres.2020.109945 View PDF View article View in Scopus Google Scholar Mizukami et al., 2008 Y. Mizukami, Y. Sawai, Y. Yamaguchi Changes in the concentrations of acrylamide, selected odorants, and cate...
The chemical composition of black teas (Camellia sinensis L) varies when the green leaf from which they are manufactured is withered physically to the same degree but for different periods. Caffeine contents progressively increase with prolonged withering time whereas theaflavins decrease due to ...