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Type: Artigo de periódico
Title: Use of penicillin and monensin to control bacterial contamination of Brazilian alcohol fermentations
Author: Stroppa, CT
Andrieta, MGS
Andrietta, SR
Steckelberg, C
Serra, GE
Abstract: The effects of the antibiotics monensin and penicillin on contaminants of alcohol-producing fermentations were investigated. Three strains of Bacillus and three of Lactobacillus isolated from Brazilian industrial fermentation units were tested. The growth of all the microorganisms studied was inhibited, when at the lowest dosages of antibiotics applied. Sugar tosses were only detectable in the absence of the antibiotics, and they differed according to the bacterial strain present. For the first 23 hours of the trials populations of all the strains tested declined in the presence of either antibiotic, at all three concentrations applied. In the following 23 hours the Bacilli showed signs of growth in the presence of penicillin, but not monensin, L, plantarum populations recovered somewhat in the two fewest concentrations tested of both antibiotics. Populations of the other two Lactobacillus species continued to decline at all three concentrations of both antibiotics. Penicillin appeal-ed to be most effective over short contact times, and monensin more efficient with prolonged contact - suggesting that use of the two antibiotics in combination may be advantageous.
Country: País de Gales
Editor: Int Sugar Journal Ltd
Citation: International Sugar Journal. Int Sugar Journal Ltd, v. 102, n. 1214, n. 78, n. +, 2000.
Rights: fechado
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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