Metabolite profiling of Cheonggukjang, a fermented soybean paste, during fermentation by gas chromatography-mass spectrometry and principal component analysis

Min Kyung Park, In Hee Cho, Sarah Lee, Hyung Kyoon Choi, Dae Young Kwon, Young Suk Kim

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Metabolite profiling by applying principal component analysis (PCA) to a GC-MS data set was performed to assess changes in a select number of pre-defined metabolites during the fermentation of Cheonggukjang. A total of 20 amino acids, 12 organic acids, and nine fatty acids were found as targeted metabolites in Cheonggukjang. As fermentation proceeded, the levels of most amino acids decreased during the early stage of fermentation, but increased in the later part of fermentation. On the other hand, amounts of fatty acids increased throughout the fermentation process, while those of most organic acids, except for tartaric acid, decreased. A PCA score plot illustrated good separation of the Cheonggukjang samples according to fermentation period by combining principal component 1 (PC 1) (36.8%) with PC 2 (30.3%). Tryptophan, citric acid, β-alanine, itaconic acid, 2-hydroxyglutaric acid, γ-aminobutyric acid, leucine, malic acid, and tartaric acid were the major components that differentiated the various samples.

Original languageEnglish
Pages (from-to)1313-1319
Number of pages7
JournalFood Chemistry
Volume122
Issue number4
DOIs
StatePublished - 15 Oct 2010

Keywords

  • Cheonggukjang (a fermented soybean paste)
  • Fermentation
  • Gas chromatography-mass spectrometry
  • Metabolite profiling
  • Principal component analysis

Fingerprint

Dive into the research topics of 'Metabolite profiling of Cheonggukjang, a fermented soybean paste, during fermentation by gas chromatography-mass spectrometry and principal component analysis'. Together they form a unique fingerprint.

Cite this