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Utilization of antimicrobial agents to control the contamination by Dekkera bruxellensis and Lactobacillus spp. in the ethanolic fermentation

Grant number: 14/17794-2
Support Opportunities:Regular Research Grants
Duration: January 01, 2015 - December 31, 2016
Field of knowledge:Biological Sciences - Microbiology - Applied Microbiology
Principal Investigator:Sandra Regina Ceccato Antonini
Grantee:Sandra Regina Ceccato Antonini
Host Institution: Centro de Ciências Agrárias (CCA). Universidade Federal de São Carlos (UFSCAR). Araras , SP, Brazil

Abstract

In the wine industry, some antimicrobials have been utilized to control populations of undesirable yeasts, especially non-Saccharomyces, such as sulfite, chitosan and dimethyl dicarbonate. Among non-Saccharomyces yeasts, the genus Dekkera/Brettanomyces have been considered as the main contaminant of the ethanolic fermentation, displaying a remarkable capacity of growth and adaptation to substrates. The sulfite salts have been used as preservatives to obtain wines of high quality; however they were not tested in the ethanolic fermentation yet. Preliminary results demonstrated at 250 mg/L, the potassium metabisulfite (PMB) was able to control the growth of the contaminant yeast D. bruxellensis without affecting considerably Saccharomyces cerevisiae, however there was a decrease in the fermentation yield. Less damage was observed when PMB was added to the fermentation medium instead to the acid solution in which the cells are treated between the fermentative cycles. In view of the results obtained and to continue with the research line in development for 10 years concerning the contaminants of the ethanolic fermentation, the aim of this project is to evaluate the effect of antimicrobials over the yeast Dekkera bruxellensis and bacteria Lactobacillus spp. The studies with potassium metabisulfite will continue and now proposing also chitosan and dimethyl dicarbonate, which have been successful to decrease the contamination by bacteria and undesirable yeasts in wine. Moreover, this project also aims to evaluate in which step of the fermentation process the antimicrobial may be utilized, in order to have a minimum effect over the starter yeast. As far as we know, this is the first work aiming the utilization of these antimicrobials in the fermentation for production of fuel ethanol. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
TANGANINI, ISABELLA C.; SHIRAHIGUE, LIGIANNE D.; DA SILVA, MARIANA ALTENHOFEN; FRANCISCO, KELLY R.; CECCATO-ANTONINI, SANDRA R.. Bioprocessing of shrimp wastes to obtain chitosan and its antimicrobial potential in the context of ethanolic fermentation against bacterial contamination. 3 BIOTECH, v. 10, n. 3, . (17/20006-4, 14/17794-2, 18/19139-2)
ANDREA FERNANDEZ, LETICIA; LAURA CIBANAL, IRENE; PARALUPPI, ANNA LIVIA; DE FREITAS, CAROLINE; MARIA GALLEZ, LILIANA; CECCATO-ANTONINI, SANDRA REGINA. Propolis as a potential alternative for the control of Dekkera bruxellensis in bioethanol fermentation. SEMINA-CIENCIAS AGRARIAS, v. 40, n. 5, p. 2071-2078, . (14/17794-2)
PARALUPPI, ANNA LIVIA; CECCATO-ANTONINI, SANDRA REGINA. High doses of potassium metabisulphite are required to control the growth of native bacteria and yeasts from sugarcane juice. ACTA SCIENTIARUM-TECHNOLOGY, v. 41, . (14/17794-2)
TANGANINI, ISABELLA C.; SHIRAHIGUE, LIGIANNE D.; DA SILVA, MARIANA ALTENHOFEN; FRANCISCO, KELLY R.; CECCATO-ANTONINI, SANDRA R.. Bioprocessing of shrimp wastes to obtain chitosan and its antimicrobial potential in the context of ethanolic fermentation against bacterial contamination. 3 BIOTECH, v. 10, n. 3, p. 9-pg., . (14/17794-2, 17/20006-4, 18/19139-2)
CECCATO-ANTONINI, SANDRA REGINA; BASSI, ANA PAULA G.; PARALUPPI, ANNA LIVIA; CERRI, BIANCA C.; COCCA, LETICIA N. Z.; FREITAS, CAROLINE. Impact of the co-occurrence of Dekkera bruxellensis and Lactobacillus fermentumin ethanolic fermentation and how to control the contaminant growth. NEW BIOTECHNOLOGY, v. 33, p. 1-pg., . (14/17794-2)
CECCATO-ANTONINI, SANDRA REGINA. Conventional and nonconventional strategies for controlling bacterial contamination in fuel ethanol fermentations. WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY, v. 34, n. 6, . (14/17794-2, 11/17928-0)
COSTA, M. A. S.; CERRI, B. C.; CECCATO-ANTONINI, S. R.. Ethanol addition enhances acid treatment to eliminate Lactobacillus fermentum from the fermentation process for fuel ethanol production. Letters in Applied Microbiology, v. 66, n. 1, p. 77-85, . (14/17794-2)

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