were collected randomly from different localities of Kolkata, West Bengal, India. Thirty-three yeast
strains were isolated using selective medium, Martin’s Rose Bengal Agar. Differential tests were applied
including morphological, cultural and biochemical characteristics, which facilitate the opportunity for
identification of the yeasts. The total number of isolated yeast strains was 12 from dahi, 2 each from apple
juice, pineapple juice, mango juice, musambi juice, grape juice, orange juice, jaggery and 7 from
sugarcane juice. These strains were found to produce various extra cellular enzymes and could ferment
various carbon sources for the production of alcohol