Antioxidant activity of phytic acid and its hydrolysis products for marinelipid

Citation
T. Uchida et al., Antioxidant activity of phytic acid and its hydrolysis products for marinelipid, J JPN SOC F, 48(10), 2001, pp. 726-732
Citations number
27
Language
GIAPPONESE
art.tipo
Article
Categorie Soggetti
Food Science/Nutrition
Journal title
JOURNAL OF THE JAPANESE SOCIETY FOR FOOD SCIENCE AND TECHNOLOGY-NIPPON SHOKUHIN KAGAKU KOGAKU KAISHI
ISSN journal
1341-027X → ACNP
Volume
48
Issue
10
Year of publication
2001
Pages
726 - 732
Database
ISI
SICI code
1341-027X(2001)48:10<726:AAOPAA>2.0.ZU;2-V
Abstract
The antioxidant effects of phytic acid (inositol hexaphosphate : IP6) were compared with its hydrolysis products (inositol diphosphate : IP2 similar t o inositol pentaphosphate : IP5). The antioxidant activity and chelating ac tivity of metal ion of IP6 and IP2 similar to IP5 (IPns) were examined by u sing the evaluation of ferric thiocyanate (FTC), beta -carotene bleaching, 2,2-diphenyl-l-picrylhydrazyl (DPPH) radical scavenging, and tetramethylmur exide inhibiting methods. (1) Result of the FTC and beta -carotene bleachin g methods indicated that the most effective antioxidant was the IP6 and its antioxidant activity was similar to the activity of alpha -tocopherol. 2) Chelating activities of IPns for Fe2+ and Cu2+ were showed that IP6 has the most strong chelating activity. In proportionately, as the number of phosp hate group increases in IPns, the chelating activities are strong. (3) IPns inhibited the marine oil oxidation with Fe2+ and that has the strong syner gistic effects with alpha -tocopherol. The inhibition of marine lipid oxida tion and the synergistic effects with a-tocopherol followed the order : IP6 > IP5 > IP4 > IP3 > IP2.