ACTION OF POLYMYXIN ON SOME COMMON BREWERY BACTERIA

Abstract
An investigation has been made into the effect of polymyxin B on the three types of bacterial infection currently found associated with brewery yeasts and worts. These are the common yeast rod and a short acid-forming rod, both gram-negative, and a gram-positive Lactobacillus species. It was found possible to eliminate all three from yeast and wort either by washing yeast with polymyxin solution or by conducting a fermentation in presence of the antibiotic.

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