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Effect of Germination Conditions on Antioxidant Activity of Germinated Brown Rice

Author

Listed:
  • A. Jongjareonrak
  • R. Sawaddiwong
  • S. Benjakul
  • K. Osako
  • M. Tanaka

Abstract

This investigation aims to study the effects of germination conditions and extraction solvents on total phenolic content and antioxidant activities of Chiang Phatthalung a recommended rice cultivar in Southern Thailand. Chiang Phatthalung (Oryza sativa L.) was germinated by soaking in tap water at 25, 30, 35 or 40°C for 24 h and then dried and powderised before subjected to extract with various solvents and analyses. Amongs all extraction solvents used, including 50% MeOH + 0.1% HCl, water, 25% EtOH, 50% EtOH, 75% EtOH and 95% EtOH, rices extracted with 50% EtOH had highest total phenolic content and antioxidant activities (P < 0.05). It was noticeable that brown rice germinated by soaking in tap water at 25°C had highest total phenolic content and antioxidant activities as determined by DPPH-, ABTS-radical scavenging activity and ferric reducing antioxidant power (P < 0.05). In addition the results suggesting that total phenolic content and antioxidant activities of germinated brown rice were higher than those of brown rice (P < 0.05).

Suggested Citation

  • A. Jongjareonrak & R. Sawaddiwong & S. Benjakul & K. Osako & M. Tanaka, 2009. "Effect of Germination Conditions on Antioxidant Activity of Germinated Brown Rice," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(SpecialIs), pages 1-53.
    • Handle: RePEc:caa:jnlcjf:v:27:y:2009:i:specialissue1:id:905-cjfs
    DOI: 10.17221/905-CJFS
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