Survival of spray-dried Lactobacillus kefir is affected by different protectants and storage conditions

Golowczyc, Marina A.; Gerez, Carla L.; Silva, Joana; Abraham, Analía G.; Antoni, Graciela L. De; Teixeira, Paula

http://hdl.handle.net/10400.14/7545

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Authors

Antoni, Graciela L. De

Teixeira, Paula

Abstract(s)

Survival of two Lactobacillus kefir strains after spray drying in reconstituted skim milk with or without the addition of 12.5 g monosodium glutamate/ l, 20 g sucrose/l, or 20 g fructo-oligosaccharides (FOS)/l and during subsequent storage under different conditions of temperature (20 and 30 C) and relative humidity (RH) (0, 11 and 23%) was evaluated. After being dried, L. kefir 8321 and L. kefir 8348 had a decrease in viability of 0.29 and 0.70 log cfu/ml respectively, while the addition of different protectants improved the survival of both strains significantly. During storage, bacterial survival was significantly higher under lower conditions of RH (0–11%), and monosodium glutamate and FOS proved to be the best protectants.

Keywords

Lactobacillus kefir Spray drying Protectants Survival

URI

http://hdl.handle.net/10400.14/7545

Citation

GOLOWCZYC, Marina A....[et al] - Survival of spray-dried Lactobacillus kefir is affected by different protectants and storage conditions. Biotechnology Letters. ISSN 1573-6776, Vol. 33 n.º 4 (2011), 681-686