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Bacterial Identification and Detection of Equol in Korean Soybean PasteBacterial Identification and Detection of Equol in Korean Soybean Paste
- Other Titles
- Bacterial Identification and Detection of Equol in Korean Soybean Paste
- Authors
- Seung-Gyun Woo; So-Yeon Lee; Go-Woon Choi; You-Jin Hong; So-Min Lee; Kang Gyun Park; 엄용빈
- Issue Date
- 2015
- Publisher
- 대한임상검사과학회
- Keywords
- Equol; LC-MS/MS; MALDI-TOF mass spectrometry; 16S rRNA gene sequence
- Citation
- 대한임상검사과학회지, v.47, no.4, pp 286 - 291
- Pages
- 6
- Journal Title
- 대한임상검사과학회지
- Volume
- 47
- Number
- 4
- Start Page
- 286
- End Page
- 291
- ISSN
- 1738-3544
2288-1662
- Abstract
- Equol has beneficial effects on human health. Fermented soy products contain equol, and many microbes participate in the equol production process. This study investigated fermented Korean soybean paste, doenjang. Thirty seven doenjang samples collected from different manufacturers were examined. Equol was detected in 3 samples (D2, D13, and D19) at the maximum content of 507 ng/100 g by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Fifteen microbial species were isolated and identified by 16S rRNA gene sequence analysis and by matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS). Bacillus spp, Paenibacillus spp, Tetragenococcus spp, Stapylococcus spp, and Clostridium species were the predominant bacteria in equol containing doenjang samples.
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Related Researcher
- Eom, Yong Bin
- College of Medical Sciences (Department of Biomedical Laboratory Science)