COA of Formula: C16H32O2《Enhancing Ethanol Tolerance via the Mutational Breeding of Pichia terricola H5 to Improve the Flavor Profiles of Wine》 was published in 2022. The authors were Gao, Jie;He, Xiuli;Huang, Weidong;You, Yilin;Zhan, Jicheng, and the article was included in《Fermentation》. The author mentioned the following in the article:
Although using non-Saccharomyces yeasts during alc. fermentation can improve the wine aroma, most of them are not ethanol tolerant; therefore, in 2017, this study screened 85 non-Saccharomyces yeasts isolated and identified from 24 vineyards in seven Chinese wine-producing regions, obtaining Pichia terricola strain H5, which displayed 8% ethanol tolerance. Strain H5 was subjected to UV irradiation and di-Et sulfate (DES) mutagenesis treatment to obtain mutant strains with different fermentation characteristics from the parental H5. Compared with strain H5, the UV-irradiated strains, UV5 and UV8, showed significantly higher ethanol tolerance and fermentation capacity. Modified aroma profiles were also evident in the fermentation samples exposed to the mutants. Increased Et caprate, Et caprylate, and Et dodecanoate content were apparent in the UV5 samples, providing the wine with a distinctly floral, fruity, and spicy profile. Fermentation with strain UV8 produced a high Et acetate concentration, causing the wine to present a highly unpleasant odor. To a certain extent, UV irradiation improved the ethanol tolerance and fermentation ability of strain H5, changing the wine aroma profile. This study provides a theor. basis for the industrial application of non-Saccharomyces yeasts that can improve wine flavor. To complete the study, the researchers used Ethyl tetradecanoate (cas: 124-06-1) .
Ethyl tetradecanoate(cas: 124-06-1) is a labeled component from essential oil of natural hawthorn perfume. Also frequently used in cosmetics, soaps, and flavorings.COA of Formula: C16H32O2Ethyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.
Reference:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics