Search
Skip to Search Results-
2014-01-01
Teixeira, Januana S., Seeras, Arisha, Sanchez-Maldonado, Alma Fernanda, Zhang, Chonggang, Su, Marcia Shu-Wei, Gänzle, Michael G.
This study aimed to determine whether glutamine deamidation improves acid resistance of Lactobacillus reuteri, and to assess whether arginine, glutamine, and glutamate-mediated acid resistance are redundant or complementary mechanisms of acid resistance. Three putative glutaminase genes, gls1,...
-
Novel two-component regulatory systems play a role in biofilm formation of Lactobacillus reuteri rodent isolate 100-23
Download2014-01-01
Su, Marcia Shu-Wei, Gänzle, Michael G.
his study characterized the two-component regulatory systems encoded by bfrKRT and cemAKR, and assessed their influence on biofilm formation by Lactobacillus reuteri 100-23. A method for deletion of multiple genes was employed to disrupt the genetic loci of two-component systems. The operons...
-
2014-01-01
Enzymatic and microbial conversion of flour components during bread making determines bread quality. Metabolism of sourdough microbiota and the activity of cereal enzymes are interdependent. Acidification, oxygen consumption, and thiols accumulation by microbial metabolism modulate the activity...
-
Transcriptome microRNA profiling of bovine mammary epithelial cells challenged with Escherichia coli or Staphylococcus aureus bacteria reveals pathogen directed microRNA expression profiles
Download2014
Zhao, Xin, Liang, Guanxiang, Jin, Weiwu, Guan, Leluo, Beaudoin, Frédéric, Ibeagha-Awemu, Eveline M.
Background MicroRNAs (miRNAs) can post-transcriptionally regulate gene expression and have been shown to be critical regulators to the fine-tuning of epithelial immune responses. However, the role of miRNAs in bovine responses to E. coli and S. aureus, two mastitis causing pathogens, is not well...
-
Characterization of α-Galactooligosaccharides formed via Heterologous Expression of α- 2 Galactosidases from Lactobacillus reuteri in Lactococcus lactis
Download2014-01-01
Wang, Yvonne, Black, Brenna A., Curtis, Jonathan M., Gänzle, Michael G.
α-Galacto-oligosaccharides (α-GOS) are produced by transgalactosylation reactions of α-galactosidase (α-Gal) or by conversion of raffinose family oligosaccharides by levansucrase. Similarly to β-GOS, α-GOS have the potential to mimic glycan receptors on eukaryotic cells and act as molecular...
-
Xylo-oligosaccharides and virginiamycin differentially modulate gut microbial composition in chickens
Download2015
Zhao, Xin, Pourabedin, Mohsen, Guan, Leluo
Background The emergence and spread of antibiotic resistance in pathogens have led to a restriction on the use of antibiotic growth promoters (AGPs) in animal feed in some countries. The potential negative after-effects of a ban on AGPs could be mitigated by improving animal intestinal health...
-
2015
Garcia-Hernandez, Rigoberto, Ruan, Lifang, Gänzle, Michael G., Zheng, Jinshui, Mercer, Ryan G., McMullen, Lynn M.
Escherichia coli AW1.7 is a heat resistant food isolate and the occurrence of pathogenic strains with comparable heat resistance may pose a risk to food safety. To identify the genetic determinants of heat resistance, 29 strains of E. coli that differed in their of heat resistance were analyzed...
-
Reutericyclin producing Lactobacillus reuteri modulates development of fecal microbiota in weanling pigs
Download2015
Zhao, Xin, Le, Minh H. A., Yang, Yan, Gänzle, Michael G., Zijlstra, Ruurd
Lactobacillus reuteri is used as probiotic culture in food and feed applications; however, strain specific properties of L. reuteri that mediate probiotic activity remain unknown. This study aimed to determine effects of feed fermentation with exopolysaccharide and reutericyclin producing L....
-
Lactic metabolism revisited: metabolism of lactic acid bacteria in food fermentations and food spoilage
Download2015-01-01
Sensory properties, shelf life, and safety of a majority of fermented foods are determined by the metabolic activity of food fermenting lactic acid bacteria. This communication reviews major metabolic routes of lactic acid bacteria, and indicates how metabolism is influenced by the environmental...
-
Structure-function relationships of bacterial and enzymatically produced reuterans and dextran in sourdough bread baking application
Download2015-12-19
Chen, Xiao Yan, Levy, Clemens, Gänzle, Michael G.
Exopolysaccharides from lactic acid bacteria may improve texture and shelf life of bread. The effect of exopolysaccharides on bread quality, however, depends on properties of the EPS and the EPS producing strain. This study investigated structure-function relationships of EPS in baking...