Food Science and Biotechnology

Korean Society of Food Science and Technology (한국식품과학회)
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Isolation and Structural Determination of Free Radical Scavenging Compounds from Korean Fermented Red Pepper Paste (Kochujang)

  • Chung, Jin-Ho (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University) ;
  • Shin, Heung-Chule (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University) ;
  • Cho, Jeong-Yong (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University) ;
  • Kang, Seong-Koo (Department of Food Science and Technology, Sunchon National University) ;
  • Lee, Hyoung-Jae (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University) ;
  • Shin, Soo-Cheol (Department of Food Science and Technology, Sunchon National University) ;
  • Park, Keun-Hyung (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University) ;
  • Moon, Jae-Hak (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University)
  • Published : 2009.04.30
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Abstract

Sixteen antioxidative active compounds isolated from the EtOAc layer of MeOH extracts of kochujang, Korean fermented red pepper paste, were structurally elucidated as fumaric acid, methyl succinate, succinic acid furan-2-yl ester methyl ester (gochujangate, a novel compound), 2-hydroxy-3-phenylpropanoic acid, 3,4-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 6,7-dihydroxy-2H-chromen-2-one (esculetin), caffeic acid, cis-p-coumaric acid, trans-p-coumaric acid, daidzin, genistin, apigenin 7-O-$\beta$-D-apiofuranosyl($1{\rightarrow}2$)-$\beta$-D-glucopyranoside, apigenin 7-O-$\beta$-Dglucopyranoside, and quercetin 3-O-$\alpha$-L-rhamnopyranoside by mass spectrometry (MS) and nuclear magnetic resonance (NMR) experiments. These compounds were analyzed for the first time as antioxidants from kochujang.

Keywords

References

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