IJSRP, Volume 6, Issue 6, June 2016 Edition [ISSN 2250-3153]
GGAP Gamage, AMJB Adikari, WAD Nayananjalie, PHP Prasanna, NWIA Jayawardena, and RHGR Wathsala
Abstract:
The present study was carried out to develop a drinking yoghurt made with goat milk using thermophilic yoghurt culture (YC-X11), Bifidobacterioum animalis subsp. Lactis (BB-12) and Lactobacillus acidophilus (LA-5) and to evaluate physicochemical, microbiological and sensory properties. Three inoculation levels (0.2 gL-1, 0.3 gL-1 and 0.4 gL-1) of traditional yoghurt cultures and two probiotic cultures were separately used to develop drinking yoghurt. Drinking yoghurts were stored at 4 0C for 21 days and analyzed for microbial counts, titratable acidity and pH on 0, 7, 14 and 21 days of storage. Sensory evaluation was done within four-day interval from day 1 to day 14 with 30 untrained panelists using five point hedonic scales. Titratable acidity and pH were significantly different (P < 0.05) with added cultures and culture levels. There was an interactive effect of treatment and storage time on pH for the developed product (P < 0.05) and developed product was within the acceptable range up to 14 days of storage at 4 0C. Ash, dry matter, fat contents, brix value and density did not significantly differ (P > 0.05) with cultures and culture levels. Yoghurt made with LA-5 received the highest overall acceptability. The developed products were negative for pathogenic microbes up to 21 days of storage. In conclusion, 0.3 gL-1 inoculation level of LA-5 could be used to develop the probiotic drinking yoghurt using goat’s milk with desired physiochemical, microbiological and sensory properties.
GGAP Gamage, AMJB Adikari, WAD Nayananjalie, PHP Prasanna, NWIA Jayawardena, and RHGR Wathsala (2018); Physicochemical, microbiological and sensory properties of probiotic drinking yoghurt developed with goat milk;
Int J Sci Res Publ 6(6) (ISSN: 2250-3153). http://www.ijsrp.org/research-paper-0616.php?rp=P545472