Carnobacterium maltaromaticum as bioprotective culture against spoilage bacteria in ground meat and cooked ham.

This study assessed the bioprotective effect of Carnobacterium maltaromaticum (CM) against Pseudomonas fluorescens (PF) and Brochothrix thermosphacta (BT) in ground beef and sliced cooked ham stored in high- and low-oxygen-modified atmospheres (66/4/30% O/N/CO and 70/30% N/CO respectively). Both meat products were inoculated with CM, PF, and BT individually or in combination and stored for 7 days (3 days at 4 °C + 4 days at 8 °C) for ground beef and 28 days (10 days at 4 °C + 18 days at 8 °C) for sliced cooked ham. Each food matrix was assigned to 6 treatments: NC (no bacterial inoculation, representing the indigenous bacteria of meat), CM, BT, PF, CM + BT, and CM + PF.

Gut Microbiota Associated with Carriage in Three Clinical Groups (Inflammatory Bowel Disease, Infection and Healthcare Workers) in Hospital Field.

is an anaerobic spore-forming Gram-positive bacterium. carriage and 16S rDNA profiling were studied in three clinical groups at three different sampling times: inflammatory bowel disease (IBD) patients, infection (CDI) patients and healthcare workers (HCWs). Diversity analysis was realized in the three clinical groups, the positive and negative carriage groups and the three analysis periods.

Impact of environmental conditions and gut microbiota on the in vitro germination and growth of Clostridioides difficile.

Clostridioides difficile is a spore-forming anaerobic Gram-positive bacterium responsible for a broad spectrum of intestinal symptoms and healthcare-associated diarrhoea. The hypothesis of this work was that different in vitro conditions, notably pH and human faecal microbiota composition, impact the germination and/or the growth of C. difficile.

Effect of five decontamination methods on face masks and filtering facepiece respirators contaminated with and .

In the context of the global pandemic due to SARS-CoV-2, procurement of personal protective equipment during the crisis was problematic. The idea of reusing and decontaminating personal surgical masks in facilities was explored in order to avoid the accumulation of waste and overcome the lack of equipment. Our hypothesis is that this work will show the decontamination methods assessed are effective for bacteria, such as and .

Potential resident bacterial microbiota in udder tissues of culled cows sampled in abattoir.

While mammary gland tissues (MGTs) are difficult to sample without risks for cow's health or milk production, milk analysis are used in routine to assess dairy cow udder's health. This study aimed to identify, quantify, compare the milk and MGTs microbiota of macroscopically healthy dairy bovine mammary glands (MG) in order to evaluate their degree of similarity. We harvested 13 couples of milk and MGTs samples, originated from the same quarter at culling.

Effect of Bifidobacterium crudilactis and 3'-sialyllactose on the toddler microbiota using the SHIME® model.

The important changes in diet during the first years of life strongly modulate the intestinal microbiota of young children. Among in vitro digestive models, the simulator of human intestinal microbial ecosystem (SHIME®) model, seems particularly adapted to study the effects of prebiotics and/or probiotics on the dynamic microbiota of toddlers. The main purpose of this study was to investigate different formulations with prebiotic (3'-sialyllactose: 3'SL) and probiotic (Bifidobacterium crudilactis FR/62/b/3) effects on young child microbiota using the SHIME® model.

A toddler SHIME® model to study microbiota of young children.

The 'first 1000 days of life' determine the gut microbiota composition and can have long-term health consequences. In this study, the simulator of the human intestinal microbial ecosystem (SHIME®) model, which represents the main functional sections of the digestive tract, was chosen to study the microbiota of young children. The aim of this study was to reproduce the digestive process of toddlers and their specific colonic environment.

Corrigendum: Cell-Free Spent Media Obtained From and Grown in Media Supplemented with 3'-Sialyllactose Modulate Virulence Gene Expression in O157:H7 and Typhimurium.

[This corrects the article DOI: 10.3389/fmicb.2016.

Cell-Free Spent Media Obtained from and Grown in Media Supplemented with 3'-Sialyllactose Modulate Virulence Gene Expression in O157:H7 and Typhimurium.

Complex oligosaccharides from human milk (HMO) possess an antimicrobial activity and can promote the growth of bifidobacteria such as and subsp. . In addition, fermentation of carbohydrates by bifidobacteria can result in the production of metabolites presenting an antivirulence effect on several pathogenic bacteria.

In vitro screening of mare's milk antimicrobial effect and antiproliverative activity.

The aims of this study were to examine the effect of mare's milk on virulence gene expression of Salmonella Typhimurium and observe its potential activity on proliferation of adenocarcinoma Caco-2 cells. Different supernatants of mare's milk, raw or heat-treated at 65°C for 15 s or 30 min, were studied. The changes in hilA gene expression of Salmonella Typhimurium in presence of mare's milk supernatants were assessed using a reporter luminescent strain.