Author(s):

Akshay Kumar, Ramachandra, B Sharanabasava and Shivanand

Abstract: The present investigation was intended to perform the dried powder of solid state fermented lactic cultures in milk by making different fermented products like dahi. yoghurt and acidophilus milk. The dried powder of SSFdahi culture was inoculated at 0.5, 1.0 and 1.5 per cent levels into heated milk, incubation at 30⁰C and then determined the milk setting time, DMC and titratable acidity. At all the inoculum levels, the milk setting time was 5 h only but DMC and titratable acidity results were varied. Dried powder of SSF dahi culture at 1 % inoculum, showed better with setting time of 5 h, DMC count of 8.60 log ₁₀ cells /ml, 0.71 % LA and 8.47 score for overall acceptability in sensory evaluation. Dahi prepared using 1% inoculum of liquid milk culture took 6 h to set milk with DMC of 8.03 log ₁₀ cells /ml and acidity of 0.70%LA and score of 8.12 for overall acceptability that indicated lower cell counts in liquid inoculum compared to SSF dahi inoculum. Yoghurt prepared with 0.5%, 1% and 1.5% of dried powder of SSF yoghurt culture took 3:30 h to set the milk at 42⁰C. Yoghurt prepared using 0.5% SSF culture was better compared to 1 and 1.5% inoculum, with DMC of 8.61 log ₁₀ cells /ml 0.79%LA and overall acceptability score of 8.41 respectively. Short set yoghurt prepared using 2% of liquid milk culture took 5:30 h to set with DMC of 8.12 log ₁₀ cells /ml and acidity of 0.50 LA and score of 7.91 for overall acceptability that indicated lower cell counts in liquid culture compared to SSF dahi culture and probiotic product, acidophilus milk prepared with 2%, 2.5% and 3% of dried powder of SSF acidophilus culture curdled the milk at 9:30 h at 37⁰C. Acidophilus milk prepared using 3% SSF culture was best compared to 2 and 2.5% inoculum, with DMC of 8.91 log, 0.67% lactic acid and overall acceptability score of 8.50 respectively. Acidophilus milk prepared using 3% of liquid milk culture took 11 h to curdle with DMC of 8.23 log ₁₀ cells /ml and acidity of 0.61LA and score of 8.00 for overall acceptability that indicated lower cell counts in liquid milk inoculum compared to SSF acidophilus inoculum.

Pages: 2874-2878  |  868 Views  274 Downloads

Download (564KB)