Abstract

Growth ofSalmonella typhimurium, Staphylococcus aureus, Bacillus cereus andPseudomonas aeruginosa was inhibited when the pH of fermenting tef approached 5.0, 5.0, 5.5 and 5.0, respectively. However the test organisms grew in far more acidic conditions in broth than in fermenting tef and this is due to antimicrobial substance(s) being produced by some of the lactic acid bacteria. Except forBacillus cereus spores, all the test organisms were heat-inactivated during the baking process of the final tef injera.

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