Search
Skip to Search Results- 21Gänzle, Michael G.
- 3Li, Qing
- 3Zheng, Jinshui
- 2Curtis, Jonathan M.
- 2Gänzle, Michael
- 2Su, Marcia Shu-Wei
-
A taxonomic note on the genus Lactobacillus : Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae
Download2020-04-15
Zheng, Jinshui, Wittouck, Stijn, Salvetti, Elisa, Franz, Charles M.A.P., Harris, Hugh M.B., Mattarelli, Paola, O'Toole, Paul W., Pot, Bruno, Vandamme, Peter, Walter, Jens, Watanabe, Koichi, Wuyts, Sander, Felis, Giovanna E., Gänzle, Michael G., Lebeer, Sarah
The genus Lactobacillus comprises 261 species (at March 2020) that are extremely diverse at phenotypic, ecological and genotypic levels. This study evaluated the taxonomy of Lactobacillaceae and Leuconostocaceae on the basis of whole genome sequences. Parameters that were evaluated included core...
-
Antimicrobial plant secondary metabolites, MDR transporters and antimicrobial resistance in cereal-associated lactobacilli: is there a connection?
Download2022-04-01
Pswarayi, Felicitas, Qiao, Nanzhen, Guar, Guatam, Gänzle, Michael
Cereal-associated lactobacilli resist antimicrobial plant secondary metabolites. This study aimed to identify multi-drug-resistance (MDR) transporters in isolates from mahewu, a Zimbabwean fermented cereal beverage, and to determine whether these MDR-transporters relate to resistance against...
-
Biochemical analysis of respiratory metabolism in the heterofermentative Lactobacillus spicheri and Lactobacillus reuteri
Download2015-01-01
Ianniello, Rocco G., Zheng, Jinshui, Zotta, Teresa, Ricciardi, Annamaria, Gänzle, Michael G.
Aims: This study evaluated the aerobic and respiratory metabolism in Lactobacillus reuteri and Lactobacillus spicheri, two heterofermentative species used in sourdough fermentation. Methods and Results: In silico genome analysis, production of metabolites and gene expression of pyruvate oxidase,...
-
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...
-
Contribution of glutaminases to glutamine metabolism and acid resistance in Lactobacillus reuteri and other vertebrate host adapted lactobacilli
Download2020-04-01
Li, Qing, Tao, QianYing, Teixeira, Juanana S., Shu-Wei Su, Marcia, Gänzle, Michael G.
The bacterial conversion of glutamine to glutamate is catalyzed by glutamine-amidotransferases or glutaminases. Glutamine deamination contributes to the formation of the bioactive metabolites glutamate, γ-aminobutyrate (GABA) and γ-glutamyl peptides, and to acid resistance. This study aimed to...
-
Dynamics of Enterobacteriaceae and lactobacilli in model sourdoughs are driven by pH and concentrations of sucrose and ferulic acid
Download2019-01-01
Dinardo, Francesca Rita, Minervini, Fabio, De Angelis, Maria, Gobbetti, Marco, Gänzle, Michael G.
This study aimed to assess, in model sourdough fermentations, the relevance of physico-chemical features of flour for the interactions between Enterobacteriaceae and lactobacilli, and for the interactions within the latter microbial group. Initially, model sourdoughs made with white wheat flour,...
-
Effect of copy number of the spoVA2mob operon, sourdough and reutericyclin on ropy bread spoilage caused by Bacillus spp.
Download2020-10-01
Li, Zhen, Siepmann, Francieli Begnini, Tovar, Luis E. Rojas, Chen, Xiaoyan, Gänzle, Michael G.
Bacillus spp. cause ropy bread spoilage of bread, which is characterized by a rotten fruity odor, followed by discoloration and degradation of the crumb. Bacillus spp. are wheat grain endophytes and form heat resistant endospores, therefore, process hygiene and heating during baking do not...
-
Effect of temperature on production of oligosaccharides and dextran by Weissella cibaria 10 M
Download2018-01-01
The formation of HoPS and oligosaccharides in sourdough fermentation improves bread quality but is dependent on the expression of glycansucrases by lactic acid bacteria. Data on the expression of dextransucrases by Weissella spp., however, are limited. This study therefore aimed to assess...
-
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...
-
2021-05-01
Christina Müller, Denise, Nguyen, Ha, Li, Qing, Schönlechner, Regine, Miescher Schwenninger, Susanne, Wismer, Wendy, Gänzle, Michael G.
A standard level of sugar addition to bread is 2% (flour base) but sweet baked goods including hamburger buns, hot dog buns and some sandwich bread contain more than 10% sucrose. This study aimed to provide an integrated assessment of different strategies for sugar-reduced bread by using...