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http://dx.doi.org/10.3746/jkfn.2011.40.10.1469

Synergistic Effect of Grapefruit Seed Extract, EDTA and Heat on Inactivation of Bacillus cereus Spore  

Yang, Seung-Kuk (Dept. of Food and Nutrition, Kookmin University)
Kim, Jung-Jee (Dept. of Food and Nutrition, Kookmin University)
Kim, Seok-Joong (Dept. of Food and Nutrition, Dongduk Women's University)
Oh, Se-Wook (Dept. of Food and Nutrition, Kookmin University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.40, no.10, 2011 , pp. 1469-1473 More about this Journal
Abstract
The efficacy of antimicrobial agents and heat treatments on spore inactivation was investigated. Grapefruit seed extract (GFE) and ethylenediaminetetraacetic acid (EDTA) were used and as antimicrobial agents, and heat treatments were conducted at $70^{\circ}C$, $80^{\circ}C$, and $90^{\circ}C$ for 30 minutes. Heat treatments at $90^{\circ}C$ were the most effective on spore inactivation as a single treatment and caused a 2.3 log reduction. When combined with a single treatment to discover synergistic effects, 1% GFE with $80^{\circ}C$ heat treatments and 0.5 mM EDTA with $80^{\circ}C$ heat treatments resulted in 2.1 log and 3.2 log reductions, respectively, though they did not show reductions at each single treatment (GFE 1% (v/v), EDTA 0.5 mM, $80^{\circ}C$). So it was concluded that by combining GFE, EDTA in low concentration treatment, and heat treatment, B. cereus spores can be effectively inactivated.
Keywords
Bacillus cereus spore; grapefruit seed extract; lysozyme; EDTA; heat treatment;
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Times Cited By KSCI : 8  (Citation Analysis)
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