Abstract
A probiotic goats’ milk yoghurt was developed containing Lactobacillus acidophilus, Lactobacillus casei and Bifidobacterium spp. and using polymerized whey protein (PWP, 0.4%) and pectin (0.3%) as gelling agents. The yoghurt was analyzed for chemical composition, mould and yeast counts, changes in pH, titratable acidity, and viscosity, and probiotic survivability during storage at 4 °C. There was no significant difference in viscosity between weeks; however, changes in titratable acidity and pH showed significant differences between weeks during storage. L. casei and Bifidobacterium spp. remained viable with populations above 106 cfu g−1 during storage, but there were no viable counts of L. acidophilus by the fourth week. Scanning electron microscopy of goats’ milk yoghurt revealed that PWP interacted with casein micelles to form a comprehensive network in the yoghurt gel. Results indicated that PWP may be a novel protein-based thickening agent for improving the consistency of goats’ milk yoghurt and other products.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
