Short communication: incorporation of inulin and transglutaminase in fermented goat milk containing probiotic bacteria.
Goat milk is a good carrier for probiotic bacteria; however, it is difficult to produce fermented goat milk with a consistency comparable to that of fermented cow milks. It can be improved by the addition of functional stabilizers, such as inulin, or treatment with transglutaminase. The aim of this study was to determine the effect of cold storage of inulin and microbial transglutaminase on the viability of Lactobacillus acidophilus La-5 and Bifidobacterium animalis ssp. lactis Bb-12 in fermented goat milk. Microbiological analysis included the determination of the probiotic bacteria cell count in fermented milk samples, whereas physico-chemical analysis included the analysis of fat content, titratable acidity, and pH of raw, pasteurized, and fermented goat milk samples. No positive influence of inulin or microbial transglutaminase on the viability of probiotics in fermented goat's milk samples was observed. Nevertheless, the population of probiotics remained above 6 log cfu/g after 8 wk of storage at 5 °C.
Department of Dairy Technology and Food Storage, West Pomeranian Technological University, Food Science and Fisheries Faculty, Papieża Pawła VI/3, 71-459 Szczecin, Poland.
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Mituniewicz-Małek
Division of Milk Biotechnology, Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences [Szkoła Główna Gospodarstwa Wiejskiego (SGGW)], Nowoursynowska Str. 159C, 02-776 Warsaw, Poland. Electronic address: malgorzata_ziarno@sggw.pl.
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Ziarno
Department of Dairy Technology and Food Storage, West Pomeranian Technological University, Food Science and Fisheries Faculty, Papieża Pawła VI/3, 71-459 Szczecin, Poland.
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Dmytrów
D000818:Animals; D001644:Bifidobacterium / Q000378:metabolism*; D005260:Female; D005285:Fermentation; D006041:Goats; D007444:Inulin; D007779:Lactobacillus acidophilus / Q000378:metabolism*; D008892:Milk / Q000737:chemistry* / Q000382:microbiology; D019936:Probiotics; D011503:Transglutaminases
D007444:Inulin; D011503:Transglutaminases
goat milk; inulin; probiotic; transglutaminase