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Response Surface Plots for the Behavioral Pattern of Yersinia enterocolitica in Chocolate Milk as Affected by Trans-Cinnamaldehyde, a Spice Essential Oil Constituent

Kattathara, H. Divya and Varadaraj, M. C. (2012) Response Surface Plots for the Behavioral Pattern of Yersinia enterocolitica in Chocolate Milk as Affected by Trans-Cinnamaldehyde, a Spice Essential Oil Constituent. Food and Bioprocess Technology, 5. pp. 498-507.

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Abstract

Response surface plots were generated to determine the behavior of a native food isolate of Yersinia enterocolitica CFR 2301 in chocolate milk with added transcinnamaldehyde, an active spice essential oil constituent. The minimuminhibitory and bactericidal concentrations (MIC and MBC) for Y. enterocolitica in broth systems were 0.1 and 0.3 μl/ml, respectively, while in chocolate milk, the MBC was 0.9μl/ml. In chocolate milk devoid of cinnamaldehyde, the culture of Y. enterocolitica CFR 2301 was able to reach riskcausing population levels in 12 h at 30°C. In the presence of cinnamaldehyde, an inactivation model was generated for the behavior of Y. enterocolitica in chocolate milk, which revealed that, irrespective of initial inoculum levels, the death time (DT) was primarily influenced by transcinnamaldehyde concentrations and incubation temperatures. The death times were found to decrease with higher cinnamaldehyde concentrations and incubation temperatures. Validation of the model revealed the adequacy of predictions derived for this inactivation model and potential application of compatible possibility to develop food formulations with inhibitory principles.

Item Type: Article
Uncontrolled Keywords: Yersinia enterocolitica . Chocolate milk . Trans-cinnamaldehyde . Inactivation model . Response surface plots . Antibacterial activity
Subjects: 600 Technology > 08 Food technology > 27 Dairy products
600 Technology > 08 Food technology > 09 Food Microbiology
Divisions: Human Resource Development
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 26 Feb 2010 07:31
Last Modified: 23 Feb 2012 05:36
URI: http://ir.cftri.com/id/eprint/9352

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