Metabolite profiling of cheonggukjang, a fermented soybean paste, inoculated with various bacillus strains during fermentation

Jin Gyeong Baek, Soon Mi Shim, Dae Young Kwon, Hyung Kyoon Choi, Choong Hwan Lee, Young Suk Kim

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Metabolite profiling of Cheonggukjang inoculated with different Bacillus strains including Bacillus amylo-liqueciens CH86-1, Bacillus licheniformis 58, and Bacillus licheniformis 67 during fermentation, was performed using gas chromatography-time of flight-mass spec-trometry after derivatization, combined with multi-variate statistical analysis. A total of 20 amino acids, 10 sugars, five sugar alcohols, and seven organic acids were identified in three Cheonggukjang samples. With fermentation time, most of the amino acids showed increasing amounts. On the other hand, most of the sugars including sucrose, fructose, and glucose decreasing patterns, and the amounts of organic acids varied. In order to observe differences in metabolites with fermentation time and inoculated Bacillus strains, principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) were carried out, respectively. On PCA plots, some sugars and organic acids including sucrose, fructose, glucose, mannose, succinic acid, and malonic acid, as well as most of the amino acids, contributed mainly to differentiation of the Cheonggukjang samples fermentation time. On the other hand, on PLS-DA, mannose, xylose, glutamic acid, and proline were mainly responsible for differentiating the Cheonggukjang among into various inoculated strains.

Original languageEnglish
Pages (from-to)1860-1868
Number of pages9
JournalBioscience, Biotechnology and Biochemistry
Volume74
Issue number9
DOIs
StatePublished - 2010

Keywords

  • Bacillus
  • Cheonggukjang
  • Gas chromatography (GC)-time of flight-mass spectrometry (TOF-MS)
  • Metabolites
  • Principal component analysis (PCA)

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