Analysis of volatile compounds, produced in a glucose solution fermented by Saccharomyces bayanus, during fermentation and conservation of fermented solution. 1. Neutral fraction was written by Chung, Sook-Hyun. And the article was included in Han’guk Yongyang Siklyong Hakhoechi in 1995.Category: esters-buliding-blocks This article mentions the following:
Twenty esters, 14 alcs., 5 aldehydes, 5 ketones, 5 lactones, 2 S-containing compounds and 1 hydrocarbon are identified by GC-MS from volatile compounds in a glucose solution containing Yeast-Carbon-Base medium fermented for 64 h by Saccharomyces bayanus at pH 3.5, 25°, 400rpm and 35L/h of aeration for 24h. Under the different conditions of conservation (1∼4), Et 2-hydroxy-4-methylpentanoate, Et succinate, nonanol and phenylacetaldehyde are produced during conservation of fermented solution 17 Esters increased during conservation at 13° for 12 wk and the increase of Et 9-hexadecenoate is important among 13 esters increased during conservation at 35° for 24h. During conservation, aldehydes increased at 35°, but decreased at 13° and the great increase of isobutanal, benzaldehyde and phenylacetaldehyde is observed at 35°. Alc. and lactones increased but ketones decreased during conservation. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0Category: esters-buliding-blocks).
Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0) 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. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics