We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Biofilm formation and antimicrobial sensitivity of lactobacilli contaminants from sugarcane-based fuel ethanol fermentation.
- Authors
Dellias, Marina de Toledo Ferraz; Borges, Clóvis Daniel; Tsai, Siu Mui; Lopes, Mário Lúcio; de Amorim, Henrique Vianna; da Cruz, Sandra Helena
- Abstract
Industrial ethanol fermentation is subject to bacterial contamination that causes significant economic losses in ethanol fuel plants. Chronic contamination has been associated with biofilms that are normally more resistant to antimicrobials and cleaning efforts than planktonic cells. In this study, contaminant species of Lactobacillus isolated from biofilms (source of sessile cells) and wine (source of planktonic cells) from industrial and pilot-scale fermentations were compared regarding their ability to form biofilms and their sensitivity to different antimicrobials. Fifty lactobacilli were isolated and the most abundant species were Lactobacillus casei, Lactobacillus fermentum and Lactobacillus plantarum. The majority of the isolates (87.8%) were able to produce biofilms in pure culture. The capability to form biofilms and sensitivity to virginiamycin, monensin and beta-acids from hops, showed inter- and intra-specific variability. In the pilot-scale fermentation, Lactobacillus brevis, L. casei and the majority of L. plantarum isolates were less sensitive to beta-acids than their counterparts from wine; L. brevis isolates from biofilms were also less sensitive to monensin when compared to the wine isolates. Biofilm formation and sensitivity to beta-acids showed a positive and negative correlation for L. casei and L. plantarum, respectively.
- Subjects
LACTOBACILLUS; BIOFILMS; ANTI-infective agents; ETHANOL as fuel; BACTERIAL contamination; FERMENTATION
- Publication
Antonie van Leeuwenhoek, 2018, Vol 111, Issue 9, p1631
- ISSN
0003-6072
- Publication type
Article
- DOI
10.1007/s10482-018-1050-8