Patrick Gervais
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View article: Study and optimization of freeze-drying cycles of model probiotic: Morphology characterization of Lyophilisates by SEM
Study and optimization of freeze-drying cycles of model probiotic: Morphology characterization of Lyophilisates by SEM Open
International audience
View article: Design of a new lyoprotectant increasing freeze-dried Lactobacillus strain survival to long-term storage
Design of a new lyoprotectant increasing freeze-dried Lactobacillus strain survival to long-term storage Open
View article: Antioxidant Properties of Ergosterol and Its Role in Yeast Resistance to Oxidation
Antioxidant Properties of Ergosterol and Its Role in Yeast Resistance to Oxidation Open
Although the functions and structural roles of sterols have been the subject of numerous studies, the reasons for the diversity of sterols in the different eukaryotic kingdoms remain unclear. It is thought that the specificity of sterols i…
View article: Increased xerotolerance of <i>Saccharomyces cerevisiae</i> during an osmotic pressure ramp over several generations
Increased xerotolerance of <i>Saccharomyces cerevisiae</i> during an osmotic pressure ramp over several generations Open
Summary Although mechanisms involved in response of Saccharomyces cerevisiae to osmotic challenge are well described for low and sudden stresses, little is known about how cells respond to a gradual increase of the osmotic pressure (reduce…
View article: Increased Survival of Lactococcus lactis Strains Subjected to Freeze-Drying after Cultivation in an Acid Medium: Involvement of Membrane Fluidity Cultivation in Acid Medium to Improve Bacterial Survival of Freeze-Drying
Increased Survival of Lactococcus lactis Strains Subjected to Freeze-Drying after Cultivation in an Acid Medium: Involvement of Membrane Fluidity Cultivation in Acid Medium to Improve Bacterial Survival of Freeze-Drying Open
Research background. Freeze-drying is the most widely used dehydration process in the food industry for the stabilization of bacteria. Studies have shown the effectiveness of an acid prestress in increasing the resistance of lactic acid ba…
View article: Increased Survival of Lactococcus lactis Strains Subjected to Freeze-Drying after Cultivation in an Acid Medium: Involvement of Membrane Fluidity
Increased Survival of Lactococcus lactis Strains Subjected to Freeze-Drying after Cultivation in an Acid Medium: Involvement of Membrane Fluidity Open
Research background. Freeze-drying is the most widely used dehydration process in the food industry for the stabilization of bacteria. Studies have shown the effectiveness of an acid prestress in increasing the resistance of lactic acid ba…
View article: The molecular dynamics of bacterial spore and the role of calcium dipicolinate in core properties at the sub-nanosecond time-scale
The molecular dynamics of bacterial spore and the role of calcium dipicolinate in core properties at the sub-nanosecond time-scale Open
View article: Comparison of two encapsulation processes to protect the commensal gut probiotic bacterium Faecalibacterium prausnitzii from the digestive tract
Comparison of two encapsulation processes to protect the commensal gut probiotic bacterium Faecalibacterium prausnitzii from the digestive tract Open
View article: Specific Gaseous Conditions Significantly Improve Lactobacillus casei and Escherichia coli Survival to Freeze Drying and Rehydration
Specific Gaseous Conditions Significantly Improve Lactobacillus casei and Escherichia coli Survival to Freeze Drying and Rehydration Open
International audience
View article: Inactivation of dried spores of Bacillus subtilis 168 by a treatment combining high temperature and pressure
Inactivation of dried spores of Bacillus subtilis 168 by a treatment combining high temperature and pressure Open
View article: Comparison of the antioxidant property of acerola extracts with synthetic antioxidants using an in vivo method with yeasts
Comparison of the antioxidant property of acerola extracts with synthetic antioxidants using an in vivo method with yeasts Open
View article: Study and optimization of freeze-drying cycles of a model probiotic strain
Study and optimization of freeze-drying cycles of a model probiotic strain Open
This work is based on the experimental study of the freeze-drying process to understand the impact of numerous factors on the survival rates of a model probiotic strain of Lactobacillus casei type. With the aim to find out if cell density …
View article: Cellular Injuries in Cronobacter sakazakii CIP 103183T and Salmonella enterica Exposed to Drying and Subsequent Heat Treatment in Milk Powder
Cellular Injuries in Cronobacter sakazakii CIP 103183T and Salmonella enterica Exposed to Drying and Subsequent Heat Treatment in Milk Powder Open
Because of the ability of foodborne pathogens to survive in low-moisture foods, their decontamination is an important issue in food protection. This study aimed to clarify some of the cellular mechanisms involved in inactivation of foodbor…
View article: Caco-2 Invasion by Cronobacter sakazakii and Salmonella enterica Exposed to Drying and Heat Treatments in Dried State in Milk Powder
Caco-2 Invasion by Cronobacter sakazakii and Salmonella enterica Exposed to Drying and Heat Treatments in Dried State in Milk Powder Open
Due to the ability of foodborne pathogens to survive in low moisture food, the decontamination of milk powder is an important issue in food protection. The safety of food products is, however, not always insured and the different steps in …
View article: Recovery Estimation of Dried Foodborne Pathogens Is Directly Related to Rehydration Kinetics
Recovery Estimation of Dried Foodborne Pathogens Is Directly Related to Rehydration Kinetics Open
Drying is a common process which is used to preserve food products and technological microorganisms, but which is deleterious for the cells. The aim of this study is to differentiate the effects of drying alone from the effects of the succ…
View article: Erratum to: Fisetin yeast-based bio-capsules via osmoporation: effects of process variables on the encapsulation efficiency and internalized fisetin content
Erratum to: Fisetin yeast-based bio-capsules via osmoporation: effects of process variables on the encapsulation efficiency and internalized fisetin content Open
View article: Fisetin yeast-based bio-capsules via osmoporation: effects of process variables on the encapsulation efficiency and internalized fisetin content
Fisetin yeast-based bio-capsules via osmoporation: effects of process variables on the encapsulation efficiency and internalized fisetin content Open
View article: Control of Relative Air Humidity as a Potential Means to Improve Hygiene on Surfaces: A Preliminary Approach with Listeria monocytogenes
Control of Relative Air Humidity as a Potential Means to Improve Hygiene on Surfaces: A Preliminary Approach with Listeria monocytogenes Open
Relative air humidity fluctuations could potentially affect the development and persistence of pathogenic microorganisms in their environments. This study aimed to characterize the impact of relative air humidity (RH) variations on the sur…
View article: Surviving the heat: heterogeneity of response in <scp> <i>S</i> </scp> <i>accharomyces cerevisiae</i> provides insight into thermal damage to the membrane
Surviving the heat: heterogeneity of response in <span> <i>S</i> </span> <i>accharomyces cerevisiae</i> provides insight into thermal damage to the membrane Open
Summary Environmental heat stress impacts on the physiology and viability of microbial cells with concomitant implications for microbial activity and diversity. Previously, it has been demonstrated that gradual heating of S accharomyces ce…
View article: Proton dynamics in bacterial spores, a neutron scattering investigation
Proton dynamics in bacterial spores, a neutron scattering investigation Open
International audience