Detection of adulteration and quality Evaluation of raw milk collected from Local markets in Bangladesh

Abstract

This experiment was aimed to detect adulteration and evaluate the quality (physical, chemical and microbiological of raw milk collected from local markets. For this purpose, the milk samples were collected from Narikali Bazar, Sofir Mia Bazar and Sokal Bazar of Jamalpur district in Bangladesh. Parameters were used to detect adulteration such as presence of Formalin, Starch, Cane Sugar and coloring agent, and to monitor the qualities of milk samples on the basis of physical tests (color, flavor, taste, texture and specific gravity), chemical tests [acidity (%), fat (g/kg), ash (g/kg), protein (g/kg), lactose (g/kg), TS (g/kg) and SNF (g/kg)]-and microbiological tests (total viable count and coliform count, CFU/ml). From the physical test it was found that all the market samples were yellowish white in color, normal in taste and flavor and free flowing fluid in case of texture. All of the raw milk samples did not fulfill the legal standard of milk composition. However, raw milk samples of Sokal Bazar were higher in fat, protein, lactose, SNF and TS contents than the other two sources of raw milk samples. Microbiological parameters (total viable count and Coliform count) also remained high in all raw milk samples than the standard. It was observed that there was no adulteration in any of the collected raw milk samples. This study revealed that hygiene condition did not properly maintain during milking and transportation of the raw milk supplied in the local markets.