Related Experiment Video
Updated: May 21, 2025

Author Spotlight: Exploring the Fermentation Microbiome Through Next-Generation Sequencing
Published on: December 1, 2023
Flavor patterns of beer fermented by Lachancea thermotolerans
Jeong-Ah Yoon1, Seong-Wook Cho1, Se-Young Kwun1
1Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon, 24341 Korea.
Abstract:
Lachancea thermotolerans, formerly known as Kluyveromyces thermotolerans, is the yeast that produces ethanol and lactic acid in sour beer fermentation. The three strains of L. thermotolerans were isolated in this study, and their performances as starters for sour beer fermentation were evaluated. All L. thermotolerans isolates exhibited comparable performances to the control in producing ethanol, acetic acid, and lactic acid. Electronic nose and gas chromatography/mass spectrometry analysis revealed that flavor patterns of beer varied notably according to the L. thermotolerans strains used. Among the three L. thermotolerans isolates, the NIYL22663 was most prominent in producing flavor compounds. In addition, it was suggested that six flavor compounds, including ethyl acetate, isoamyl alcohol, and isoamyl acetate, are closely related to NIYL22663.
Supplementary Information:
The online version contains supplementary material available at 10.1007/s10068-024-01769-9.
Related Concept Videos
Fermentation
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
Fates of Pyruvate
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
Mass Spectrometry: Alcohol Fragmentation

