Optimization of fermentation conditions of green tea wine and changes in its main components during fermentation was written by Zhao, Xiao-yue;Xu, Huai-de;Yang, Rong-xiang. And the article was included in Shipin Kexue (Beijing, China) in 2014.Category: esters-buliding-blocks The following contents are mentioned in the article:
The fermentation process of green tea wine was optimized, and the changes in polyphenols, catechins and aroma components during fermentation were investiated. Orthogonal array experiments were used to optimize the fermentation process. The changes in catechins and aroma components were determined by high performance liquid chromatog. (HPLC) and gas chromatog.-mass spectrometry (GC-MS). The optimal fermentation parameters were determined as follows: 4 g/L green tea infusion with 20% glucose and 50 g/L honey added, 5 g/L wine yeast inoculum size, and fermentation at 28°C for 10 days. The contents of six catechins were increased during fermentation Specifically, the contents of (-)-epigallocatechin (EGC), (-)-gallocatechin gallate (GCG), epicatechin gallate (ECG), and epicatechin (EC) were slightly increased; however, the contents of catechin (C) and epigallocatechin-3-gallate catechin (EGCGC) were increased by 10.88 and 17.33-folds, resp. These results indicate that the increase of catechins plays an important role in the health-promoting function of green tea wine. There were 87, 88 and 94 aroma components in the wine at the initial and the last stages of fermentation and the aged wine, which accounted for 92.93%, 98.26% and 91.87% of the total volatile components, resp. The significant differences in the types and amounts of aroma components indicate the transition from the tea flavor to the wine aroma components. Green tea can be fermented into wine; the health-promoting components (catechins) of green tea are increased to different extents and the green tea wine is mellow. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Category: esters-buliding-blocks).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics