Journal
FOOD CHEMISTRY
Volume 115, Issue 4, Pages 1234-1239Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2009.01.032
Keywords
Antioxidant activity; Antimicrobial activity; MeOH extracts; Sorghum
Funding
- National Institute of Agricultural Biotechnology [1008010-2-1]
- Bioherb Research Institute
- Research Institute of Agricultural Science
- Kangwon National University
- Republic of Korea
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Here, we report the antioxidant and antimicrobial activities of sorghum (Sorghum bicolor Moench) extracts prepared from 25 cultivars from South Korea. Four cultivars of sorghum were extracted with methanol, then further fractioned with n-hexane, ethyl acetate, n-butanol, and water. The RC50 (the concentration of antioxidant required to achieve absorbance equal to 50% that of a control containing no antioxidants) value of the DPPH method and reducing power showed higher efficiency in the BuOH layer of all selected cultivars except Neulsusu. The various fractions were then examined for antimicrobial activity by a serial two fold dilution assays using the paper disc method. The methanol extracts showed higher levels of antimicrobial activity than the other fractions. Our results indicate that sorghum extracts could be used as a source of antioxidant and antimicrobial ingredients in the food industry. (C) 2009 Elsevier Ltd. All rights reserved.
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