Exemplar Abstract for Lactobacillus fermentum Beijerinck 1901 (Approved Lists 1980) emend. Dellaglio et al. 2004.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Lactobacillus Fermentum

scholarly journals Physiological, Morphological and Antioxidant Responses of Pediococcus pentosaceus R1 and Lactobacillus fermentum R6 Isolated from Harbin Dry Sausages to Oxidative Stress

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1203
Author(s):  
Huan Zhang ◽  
Jianhang Xu ◽  
Qian Chen ◽  
Hui Wang ◽  
Baohua Kong
Keyword(s):  
Oxidative Stress ◽  
Electron Microscopy ◽  
Antioxidant Properties ◽  
Membrane Integrity ◽  
Starter Cultures ◽  
Lactobacillus Fermentum ◽  
Fermented Foods ◽  
Pediococcus Pentosaceus ◽  
Cell Membrane Integrity ◽  
Dry Sausages

As functional starter cultures and potential probiotics, the ability of lactic acid bacteria to resist oxidative stress is essential to maintain viability and functional properties. This study investigates the effects of H2O2 at different concentrations (0, 1, 2, and 3 mM) on the physiological, morphological, and antioxidant properties of Pediococcus pentosaceus R1 and Lactobacillus fermentum R6 isolated from Harbin dry sausages. The increase in H2O2 concentration induced a significant increase in reactive oxygen species and a decrease in intracellular ATP levels (p < 0.05). Based on scanning electron microscopy, transmission electron microscopy, and electric conductivity analysis, H2O2 stress caused cell deformation, the destruction of cell membrane integrity, partial loss of the cytoplasm, and an increase in the cell conductivity of both strains. H2O2 stress with 1 mM or 2 mM concentrations could effectively improve the scavenging rates of free radicals, the activities of superoxide dismutase and glutathione peroxide, and the total antioxidant capacity of both strains (p < 0.05). In conclusion, an appropriate oxidative stress contributed to the activation of the antioxidant defense system of both strains, conferred strains a better effect in inhibiting the oxidation of fermented foods, and improved the health of the host.

Etiology of White Spot Defect in Swiss Cheese Made from Pasteurized Milk

1986 ◽  
Vol 49 (9) ◽  
pp. 718-723 ◽  
Author(s):  
K. R. NATH ◽  
B. J. KOSTAK
Keyword(s):  
Eye Development ◽  
Lactobacillus Fermentum ◽  
White Spot ◽  
Co2 Production ◽  
Broth Culture ◽  
Complete Dissolution ◽  
Swiss Cheese ◽  
Streptococcus Faecalis ◽  
Pasteurized Milk ◽  
White Spots

Swiss cheese made from fully pasteurized milk developed white spots during hot room stay. This cheese was bitter and eye development was generally retarded. Streptococcus faecalis subsp. liquefaciens was isolated in high numbers from the spot; it caused bitterness in milk cultures with complete dissolution of the milk clot. The isolate was inhibitory to propionibacteria and Lactobacillus fermentum; CO2 production by Propionibacterium was depressed in broth culture in the presence of the S. faecalis subsp. liquefaciens isolate.

scholarly journals Reduced lesions in chickens with Clostridium perfringens-induced necrotic enteritis by Lactobacillus fermentum 1.2029 ,

2012 ◽  
Vol 91 (12) ◽  
pp. 3065-3071 ◽  
Author(s):  
L. Cao ◽  
X.J. Yang ◽  
Z.J. Li ◽  
F.F. Sun ◽  
X.H. Wu ◽  
...  
Keyword(s):  
Clostridium Perfringens ◽  
Lactobacillus Fermentum ◽  
Necrotic Enteritis

Lactobacillus fermentum L930BB and Bifidobacterium animalis subsp. animalis IM386 initiate signalling pathways involved in intestinal epithelial barrier protection

2018 ◽  
Vol 9 (3) ◽  
pp. 515-525 ◽  
Author(s):  
D. Paveljšek ◽  
P. Juvan ◽  
R. Košir ◽  
D. Rozman ◽  
B. Hacin ◽  
...  
Keyword(s):  
Growth Factor ◽  
Actin Cytoskeleton ◽  
Lactobacillus Fermentum ◽  
Signalling Pathways ◽  
Epithelial Barrier ◽  
Intestinal Epithelial ◽  
Intestinal Epithelial Barrier ◽  
Apoptotic Pathway ◽  
Promising Alternative ◽  
Bifidobacterium Animalis

The manipulation of intestinal microbiota with beneficial microbes represents a promising alternative or adjunct therapy in gastrointestinal disorders and inflammation. The current study aims to clarify the signalling pathways and evaluate the possible beneficial effects of the combination of two strains. We used a dextran sulphate sodium (DSS)-induced mouse model of colitis. RNA extracted from the middle part of the colon tissue was used for examination of the global gene expression with Affymetrix microarrays. An enrichment analysis of the KEGG pathways was performed, and a subset of genes associated with intestinal epithelial barrier function was verified with qPCR. A clinical condition assessment of the differently treated mice revealed that the combination of these two bacterial strains was safe for use as a dietary supplement. All animals treated with DSS had affected colons and suffered weight loss. There were very small differences between the diseased groups, although the depth of inflammation was lower when cyclosporine A or the strain mixture was used. We discovered that the prophylactic administration of the Lactobacillus fermentum L930BB (L930BB) and Bifidobacterium animalis subsp. animalis IM386 (IM386) strains led to an anti-apoptotic pathway through phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)/Akt and to the activation of pathways involved in the regulation of actin cytoskeleton via protein kinase C and GTPases. Reorganisation of actin cytoskeleton and decreased apoptosis are both helpful in intestinal epithelial cell reconstitution. We confirm important previous observations, showing that these pathways are downstream targets of Toll-like receptor 2 and fibroblast growth factor initiated signalling. Taken together, these results suggest that the combination of L930BB and IM386 could aid in the regeneration of the intestinal epithelium during pathogenesis via pattern recognition receptors and the stimulation of growth factor synthesis.

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