Deciphering Rind Color Heterogeneity of Smear-Ripened Munster Cheese and Its Association with Microbiota.

Color is one of the first criteria to assess the quality of cheese. However, very limited data are available on the color heterogeneity of the rind and its relationship with microbial community structure. In this study, the color of a wide range of smear-ripened Munster cheeses from various origins was monitored during storage by photographic imaging and data analysis in the CIELAB color space using luminance, chroma, and hue angle as descriptors.

Shaving and breaking bacterial chains with a viscous flow.

Some food and ferment manufacturing steps such as spray-drying result in the application of viscous stresses to bacteria. This study explores how a viscous flow impacts both bacterial adhesion functionality and bacterial cell organization using a combined experimental and modeling approach. As a model organism we study Lactobacillus rhamnosus GG (LGG) "wild type" (WT), known to feature strong adhesive affinities towards beta-lactoglobulin thanks to pili produced by the bacteria on cell surfaces, along with three cell-surface mutant strains.

Effect of sieved fractionation on the physical, flow and hydration properties of Lam., Forssk. and L. powders.

This study aimed at evaluating the effect of successive grinding and sieving processes on the physicochemical properties of powders obtained from seeds fruits and calyxes. Plant powders were fractionated into four granulometric classes and their properties were compared to those of unsieved powders. Mean particle size exerted a significant influence ( < 0.

Successive grinding and sieving as a new tool to fractionate polyphenols and antioxidants of plants powders: Application to seeds, fruits, and calyx powders.

The present investigation aimed at evaluating the effect of powder fractionation based on particle size on the chemical composition in macronutrients, polyphenol contents, and antioxidant properties of powders of seeds, fruits, and calyces. Significant differences ( < 0.05) among granulometric classes of each plant were observed for the chemical composition in macronutrients.

High-Throughput Identification of Candidate Strains for Biopreservation by Using Bioluminescent .

This article describes a method for high-throughput competition assays using a bioluminescent strain of . This method is based on the use of the luminescent indicator strain EGDe The luminescence of this strain is correlated to growth, which make it suitable to monitor the growth of in mixed cultures. To this aim, luminescence kinetics were converted into a single numerical value, called the Luminescence Disturbance Indicator (LDI), which takes into account growth inhibition phenomena resulting in latency increase, decrease in the luminescence rate, or reduction of the maximum luminescence.

Structure, gelation, and antioxidant properties of curcumin-doped casein micelle powder produced by spray-drying.

The encapsulation of curcumin in micellar caseins (MCs) and the production of powder were performed by spray-drying. Nearly 97% of the curcumin was retained and the yellow powder showed a typical high casein powder morphology. The hygroscopic properties were determined, slight differences reflected less available hydrophobic sites when curcumin was bound to casein, favoring interactions with water in curcumin-enriched MC powders.

Structure and gelation properties of casein micelles doped with curcumin under acidic conditions.

In this study, the ability of micellar casein (MC) to interact with curcumin during acidification and to produce acid gel was investigated. Steady-state fluorescence spectroscopy of curcumin variation and fluorescence quenching of caseins upon binding with curcumin molecules were evidenced. Increasing the temperature from 20 to 35 °C enhanced MC-curcumin interactions as reflected by the increase in the binding constant from 0.

Stability constants determination of successive metal complexes by hyphenated CE-ICPMS.

The study of radionuclides speciation requires accurate evaluation of stability constants, which can be achieved by CE-ICPMS. We have previously described a method for 1:1 metal complexes stability constants determination. In this paper, we present its extension to the case of successive complexations and its application to uranyl-oxalate and lanthanum-oxalate systems.

Metal complexes stability constant determination by hyphenation of capillary electrophoresis with inductively coupled plasma mass spectrometry: the case of 1:1 metal-to-ligand stoichiometry.

Nuclear energy development has raised new issues like radionuclides biogeochemistry. The modelling of their biochemical properties involves the accurate determination of thermodynamical data, like stability constants. This can be achieved by using hyphenated capillary electrophoresis (CE)-ICPMS and the method was applied successfully on 1:1 lanthanum-oxalate and uranyl-oxalate complexes.