Asian Journal of Bio Science

K. D. Chavan ¹, M. B. Kulkarni ¹

Affiliations
1 Department of Animal Science and Dairy Science, M.P.K.V. Rahuri, Ahmednagar (M.S.), IN

Abstract

Influence of microwave heating with power levels (10-100%) and two timings (60 seconds and 80 seconds) on microbiological (SPC and YMC) quality of khoa during storage was studied. The treatments M₄T₁ M₆T₂ were found to be promising based on germicidal efficacy as well as the overall sensory quality of khoa samples. In case of treatments M₇T₂ onwards the multiplication rate of microorganism was quite negligible. It was further noticed the efficacy of killing the Yeasts and mould for the samples was more as compare to the killing other bacterial species. This may be evident from the data on the microbial counts for M₇T₂ in case of SPC and M₄T₂ in case of YMC.

Keywords

Khoa, Microwave Heating, Storage, SPC, YMC.

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K. D. Chavan ¹, M. B. Kulkarni ¹

Affiliations
1 Department of Animal Science and Dairy Science, M.P.K.V., Rahuri, Ahmednagar (M.S.), IN

Abstract

In a maiden attempt in utilizing solar radiation in dairy product preservation, the solar radiation was passed on to khoa through some media in order to extend its shelf life under room temperature (32 to 37°C). Similarly, application of microwave heating technique for the same purpose was also tried. Influence of the solar radiation through plain glass (S₁) and convex lense (S₁) and microwave heating powers (ranging from 40% to 60%) for 60 sec to 80 sec) on microbiological, chemical and sensory qualities of the fresh khoa was studied. The mean Standard Plate Count (SPC), Yeast and Mould Count (YMC) and spore count of fresh khoa (day-0) ranged from 0 to 4.33×102, 0 to 11.66 and 0 to 9.67 cfu/g. The chemical and sensory qualities of the samples remained almost similar (8.5 points out of 9) of control (8.6 point) The application of microwave heating was observed to be quite superior in reducing the SPC, YMC, and spore count of the khoa samples.

Keywords

Solar Radiation, Microwave Heating, Khoa, SPC, YMC, Spore Count.

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