Izvorni znanstveni članak
Predictive modeling of Bifidobacterium animalis subsp. lactis Bb-12 growth in cow’s, goat’s and soy milk
Vedran Slačanac
Mirela Lučan
Jovica Hardi
Kristina Habschied
orcid.org/0000-0001-9404-5688
; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology,Department for Food Technology, Kuhačeva 18, 31000 Osijek, Croatia
Vinko Krstanović
Goran Gagula
Sažetak
The aim of this study was to use a predictive model to analyse the growth of a probiotic strain Bifidobacterium animalis subsp. lactis Bb-12 in cow’s, goat’s and soy milk. The Gompertz model was used, and the suitability of the model was estimated by the Schnute algorithm. Except for the analysis of Bifidobacterium animalis subsp. lactis Bb-12 growth, the Gompertz model was also used for the analysis of pH changes during the fermentation process. Experimental results, as well as the values of kinetic parameters obtained in this study, showed that the highest growth rate of Bifidobacterium animalis subsp. lactis Bb-12 was obtained in goat’s milk, and the lowest in soy milk. Contrary to the growth of Bifidobacterium animalis subsp. lactis Bb-12, pH decreased faster in soy milk than in cow’s milk. The highest rate of pH decrease was also observed in goat’s milk, which is in correspondence with results of various previous studies. The Gompertz model proved to be highly suitable for analysing the course and the fermentation kinetics in these three kinds of milk, and might be used to analyse the growth kinetics of other probiotic and starter cultures in milk.
Ključne riječi
bacterial growth rate; fermentation kinetics; cow’s milk; goat’s milk; soy milk; Bifidobacterium animalis subsp. lactis Bb-12
Hrčak ID:
111100
URI
Datum izdavanja:
25.11.2013.
Posjeta: 3.489 *