Demonstration of microbial load in coffee powders

Prema Sivakumar and Muralidharan

The study was aimed at conducting a microbial analysis of 19 samples of commercially available instant coffee powders to study the presence of various micro organisms including fungi in the samples of coffee powder. Instant coffee is a soluble product in the form of flowing powder or agglomerate derived from the aqueous extracts of freshly roasted and ground coffee, having the colour, taste and flavour characteristics of coffee. The microbial contamination of coffee powders is commonly due to mishandling and unhygienic conditions during the storage and processing of the coffee beans. Coffee is a very popular beverage amongst the Indian population. In the study that was conducted, fungal contaminants were found in 5 out of 19 samples and the bacterial contaminants were found in all the samples.

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