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http://dx.doi.org/10.5851/kosfa.2008.28.2.232

Application of Predictive Microbiology for Shelf-life Estimation of Tteokgalbi Containing Dietary Fiber from Rice Bran  

Heo, Chan (Division of Animal Life Science, Konkuk University)
Kim, Hyoun-Wook (Division of Animal Life Science, Konkuk University)
Choi, Yun-Sang (Division of Animal Life Science, Konkuk University)
Kim, Cheon-Jei (Division of Animal Life Science, Konkuk University)
Paik, Hyun-Dong (Division of Animal Life Science, Konkuk University)
Publication Information
Food Science of Animal Resources / v.28, no.2, 2008 , pp. 232-239 More about this Journal
Abstract
The objective of this study is to estimate the shelf-life of Tteokgalbi containing dietary fiber extracted from rice bran by using the predictive microbiology. This Tteokgalbi was made with 0%, 1%, 2%, and 3% dietary fiber. The number of total viable cells, anaerobic, psychrotrophic, and heat-stable bacteria and coliforms was calculated during 15 days of storage under $4{\pm}1^{\circ}C$ and the obtained data was applied to Baranyi function. The evaluation of fitness between predicted and observed data showed that these were matched in a satisfactory way. Heat-stable bacteria was detected lower than <1 log CFU/g and coliforms were not detected during the storage. The changes of total viable cells and psychrotrophic bacteria in Tteokgalbi were increased gradually, but dramatically increased after 3 days of storage. The models of total viable cells and anaerobic bacteria showed very similar growth trends and values of growth parameters each other. The estimated shelf-life of each Tteokgalbi was calculated from the predictive model of total viable cells and the estimated shelf-life was 1.7, 2.3, 2.3, and 2.4 days, respectively. The results suggested that the prediction of bacteria growth could be used to evaluate the microbiological safety and determine the shelf-life of Tteokgalbi as ready-to-eat food in the local market.
Keywords
Tteokgalbi; predictive microbiology; Baranyi function; dietary fiber; shelf-life;
Citations & Related Records
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