[en] The purpose of this study was to optimize the kefir grains biomass production, using milk as culture media. The kefir grains were cultured at different changed conditions to evaluate their effects. Results showed that optimal culture conditions were using the organic skim milk, incubated at 25°C for 24 hours with a rotation rate of 125 rpm. According to results, the growth
rate was 38.9 g/L for 24 h, at 25°C using the organic milk - OSM, 36.87 g/L during 24 hours, optimal time for propagation process gave 37.93 g/L kefir grains biomass when the effect of temperature level was tested. The homogenization of medium with shaker rotating induced a greater growth rate, it was obtained 38.9 g/L for 24 h, at 25°C using rotation rate at 125 rpm. The growing medium (conventional milk) supplemented with different minerals and vitamins may lead to improve the growth conditions of kefir grains biomass. The optimization of the growth environment is very important for achieving the maximum production of kefir grains biomass, substrate necessary to obtain the polysaccharide kefiran.
Disciplines :
Food science
Author, co-author :
POP, Carmen; Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine
APOSTU, Sorin; Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine
SALANŢĂ, Liana; Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine
ROTAR, Ancuţa M.
Sindic, Marianne ; Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Laboratoire Qualité et sécurité des produits agro-aliment.
Mabon, Nicolas; CRA-w
SOCACIU, Carmen; Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine
Language :
English
Title :
Influence of Different Growth Conditions on the kefir grains production used in the kefiran synthesis
Publication date :
2014
Journal title :
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Food Science and Technology