Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 10, Issue 4, 2008; Page No.(843-846 )

EVALUATION OF MICROBIOLOGICAL QUALITY OF VENDORS' MILK SOLD IN AJMER CITY, RAJASTHAN, INDIA

BHARTI JAIN, RITU MATHUR AND MADHU SINGHVI

Abstract

The present study was aimed to assess the microbiological quality of vendors' milk sold in Ajmer city. Fifty raw milk samples were collected from five different colonies of Ajmer. Various tests were performed to study the keeping and hygienic quality of milk. Data of methylene blue reduction test revealed that none of the samples were in the categories of good and fair while 86 per cent samples were in the very poor category and only 14 per cent in the poor category. When milk was graded according to Titrable acidity it was found that 90 per cent samples fulfilled the PFA standards. Study of Standard Plate Count revealed that 94 per cent milk samples were categorised as poor, 69 per cent fair and none in the good or very good category. Data of Coliform Tests revealed that none of the samples were in the category of satisfactory range. Significant negative correlations were found in case of Standard Plate Count and Coliform Count with respect to Methylene Blue Reduction Test. Microbiological tests revealed that keeping and hygienic quality of vendors' milk supplied in Ajmer is of poor quality.

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