Antioxidant Effects of Bioactive Compounds Isolated from Pressurized Steam-Treated Corni Fructus and Their Protective Effects Against UVB-Irradiated HS68 Cells

Journal of Medicinal Food
Hye-Mi Park, Joo-Heon Hong

Abstract

This study evaluated the antioxidant and protective effects of bioactive compounds isolated from pressurized steam-treated Corni Fructus (PSC). We had previously tested the protective effects of the furan fraction containing 5-hydroxymethylfurfural (5-HMF), polyphenol fraction containing gallic acid, and iridoid glycoside fraction containing morroniside and loganin. We measured the potency of antioxidant activities of the bioactive compounds isolated from PSC via oxygen radical absorbance capacity (ORAC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging assays. One fraction in particular (named F-2) not only contained high amounts of phenolics but also had potent antioxidant activities. The protective effects of F-2 were evaluated by measuring the levels of the collagen-degrading enzyme, matrix metalloproteinase-1 (MMP-1), and the marker of collagen biosynthesis, procollagen type I C-peptide (PIP), in UVB-treated HS68 fibroblasts. MMP-1 levels decreased in an F-2 concentration-dependent manner, and PIP secretion from the cultured HS68 cells was significantly higher than that from the UVB-irradiated cultures alone. Further, F-2 attenuate...Continue Reading

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Methods Mentioned

BETA
environmental stress
Fluorescence
ELISA
electrophoresis

Software Mentioned

SPSS
ImageJ

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