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Predictive model for the behavior of Listeria monocytogenes Scott A in shrikand, prepared with a biopreservative, pediocin K7.

Jagannath, A. and Ramesh, A. and Ramesh, M. N. and Chandrashekar, A. and Varadaraj, M. C. (2001) Predictive model for the behavior of Listeria monocytogenes Scott A in shrikand, prepared with a biopreservative, pediocin K7. Food Microbiology, 18 (3). pp. 335-343.

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Abstract

Shrikand, a sweetened lactic-fermented milk product manufactured in India, is highly susceptible to contamination by foodborne pathogens. In this study, effects of pediocin K7 from Pediococcus acidilactici CFR K7 on growth of Listeria monocytogenes Scott A in shrikand were investigated. Predictive modelling of L. monocytogenes growth behaviour was carried out using response surface plots under the influence of 4 variables: intitial inoculum concn. (3.3-7.3 log10 cfu/g); storage temp. (4-28C); storage time (24-120 h); and pediocin K7 concn. (11-23%). The precictions were validated in food systems. The model predicted that growth of L. monocytogenes Scott A would be inhibited at higher storage temp., longer storage time and higher concn. of pediocin K7. Statistical analysis of experimental values obtained for growth of the pathogen in shrikand demonstrated good agreement with counts predicted by the model, with the majority of the predictions being fail-safe.

Item Type: Article
Uncontrolled Keywords: BACTERIOCINS-; FERMENTED-MILK; FOOD-SAFETY-DAIRY-PRODUCTS; LISTERIA-; MICROBIOLOGICAL-TECHNIQUES; LISTERIA-MONOCYTOGENES; PEDIOCINS-; PREDICTIVE-MODELLING; SHRIKHAND-
Subjects: 600 Technology > 08 Food technology > 18 Processed foods > 02 Fermented foods
600 Technology > 08 Food technology > 31 Food Additives
Divisions: Food Engineering
Food Microbiology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 01 Jun 2011 06:21
Last Modified: 01 Jul 2015 10:54
URI: http://ir.cftri.com/id/eprint/7645

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