Abstract

The purpose of paper was the evaluation of short-chain organic acid effect on Escherichia coli in fish meal stored at 12 C. Fish meal samples (n=125) were inoculated with 7 x 10 CFU x g of E. coli ATCC o 7 -1 25922 strain and treated with 0 to 1.2% of formic (35%) and propionic (15%) acid mixture. The treatment resulted in the significant reduction of number of test bacteria, proportional to the concentration of aci d added. When applied in mixture, propionic and formic acid appeared to work synergistically against E. coli. Accordingly, their application as high-protein feed preservatives seems to be highly appropriate.

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