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KMID : 0380620090410030345
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Korean Journal of Food Science and Technology
2009 Volume.41 No. 3 p.345 ~ p.349
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Phenolic Compounds and Antioxidant Activity in Cell Wall Materialsfrom Deodeok (Codonopsis lanceolata)
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Kim Yoon-Han
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Abstract
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This study measured the amounts of uronic acid, total sugars, non-cellulosic neutral sugars, phenolic compoundsas well as antioxidants activity in cell wall materials (CWM) derived from different parts of deodeok (Codonopsislanceolata). The values of the uronic acid (UA): neutral sugars (NS) ratio in polymers extracted from the CWM of theflesh and skin were 4 and 6, respectively. The total sugar contents of the flesh and skin were 788.6 and 824.9μg/mg ofCWM, respectively. Galactose and arabinose were the main noncellulosic neutral sugars. The chemical structure of fivephenolic compounds from the CWM were analyzed and identified as vanillic acid, p-OH-benzaldehyde, vanillin, ferulicacid, and 8-O-4’ diferulic acid by HPLC spectral data. Among them, p-OH-benzaldehyde, vanillin, and 8-O-4’ diferulic acidwere the first compounds identified from the deodeok. The content of 8-O-4’ diferulic acid in the skin CWM was 56.1μg/g AIR (alcohol insoluble residue). The ethanol-NaOH fractions from CWM had the highest oxygen radical absorbancecapacity (ORAC) activities, followed by the AIR fractions and ethanol fractions.
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KEYWORD
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Codonopsis lanceolata, cell wall, phenolics, 8-O-4’ diferulic acid
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