EVALUATION OF ALDEHYDES PRODUCTION FROM YEAST STRAINS ISOLATED FROM FERMENTATION STARTERS IN SOME NORTHERN PROVINCES OF VIETNAM

Phạm Thị Tuyết Mai; Lưu Hồng Sơn; Nguyễn Thị Giang; Phùng Thị Anh Minh; Trần Văn Chí

doi:10.34238/tnu-jst.8331

EVALUATION OF ALDEHYDES PRODUCTION FROM YEAST STRAINS ISOLATED FROM FERMENTATION STARTERS IN SOME NORTHERN PROVINCES OF VIETNAM

About this article

Received: 13/07/23 Revised: 28/09/23 Published: 28/09/23

Authors

1. Pham Thi Tuyet Mai, TNU - University of Agriculture and Forestry
2. Luu Hong Son , TNU - University of Agriculture and Forestry
3. Nguyen Thi Giang, TNU - University of Agriculture and Forestry
4. Phung Thi Anh Minh, Ha Noi University of Science and Technology
5. Tran Van Chi, TNU - University of Agriculture and Forestry

Abstract

In recent years, the number of cases of alcohol poisoning tends to increase. Alcohol contains not only ethanol, but also methanol, aldehyde and other toxic substances that have serious effects on human health. This study was conducted to evaluate the aldehyde-producing ability of yeast strains isolated from fermentation starters in some Northern provinces of Vietnam, thereby providing more scientific information and recommendations to users about distilled alcohol products are circulating in the market. As a result, 13 yeast strains were isolated from wine yeast samples collected in 4 provinces including: Bac Giang, Thai Nguyen, Bac Kan and Cao Bang. All isolates were capable of producing ethanol in Hansen medium with concentrations ranging from 4.0 to 18.5% v/v. In the produced alcohol samples, aldehydes appeared with different concentrations. The wine sample made from strain MRb1 isolated from fermentation starters in Cao Bang had the lowest aldehyde content (0 - 100.5 mg/l 100^o ethanol). The wine sample made from strain MRdn2 isolated from fermentation starters collected in Thai Nguyen contained the highest aldehyde content (500 - 1000 mg/l 100^o ethanol).

Keywords

Yeast; Alcohol; Aldehyde; Colony; Fermentation

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DOI: https://doi.org/10.34238/tnu-jst.8331

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