Analysis of variance was used to evaluate the simultaneous effects of strain, incubation temperature (15 to 25 degrees C), agitation time (0 to 24 h), and initial sulfite concentration (100 to 300 ppm) on glycerol production in grape juice by Saccharomyces cerevisiae. Fourteen strains were studied to determine their growth patterns in the presence of sulfites and ethanol. Baker's yeast strains ...

Dissimilatory sulfate reduction serves as a key metabolic carbon remineralization process in anoxic marine environments. Sulfate reducing microorganisms can impart a wide range in mass-dependent sulfur isotopic fractionation. As such, the presence and relative activity of these organisms is identifiable from geological materials. By extension, sulfur isotope records are used to infer the redox ...

The present study reports synthesis of MOWS2 nanocomposite followed by its characterization using energy dispersive X-ray spectroscopy (EDS), X-Ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). Chronoamperometry (CHA), differential pulse voltammetry (DPV), and cyclic voltammetry (CV) have been used to examine electro-chemical behaviors of sulfite on MOWS2...

The widespread production and use of antibiotics, which accumulate in the environment lead to chronic poisoning non-target organisms, causing potential safety risks human health. In this study, [email protected]/Fe was used as particle electrode sulfite hetero activator for synergistic degradation Sulfamethazine(SMR) a three-dimensional reactor. Under optimal experimental parameters (trough vol...

Large impact-melt pockets in shergottites contain both Martian regolith components and sulfide/sulfite bleb clusters that yield high sulfur concentrations locally compared to bulk shergottites. The may be the source of excess shergottite melt pockets. To explore whether shock release secondary Fe-sulfates trapped host rock voids is a plausible mechanism generate clusters, we carried out recover...

Background and Aims Varietal thiol precursors (VTPs) decrease strongly after the pre-fermentative operations. The effect of grape must extraction steps on concentration S-3-(hexan-1-ol)-L-glutathione (G-3SH), S-3-(hexan-1-ol)-L-cysteine (Cys-3SH) S-3-(hexanal)-glutathione (G-3SHal) was investigated. Methods Results Must produced a commercial scale sampled throughout pre-fermentation steps. also...

NOx emissions continues to be a major challenge in order reduce the environmental impact of thermal conversion non-recyclable waste and fuels with high nitrogen contents. Oxidation NO NO2 followed by absorption aqueous solutions sulfur compounds as additives has recently gained more attention from flue gases. One is consumption sulfite, requiring sulfite oxidation inhibitors such thiosulfate. T...

Sulfate-reducing bacteria play major roles in the global carbon and sulfur cycles, but it remains unclear how reducing sulfate yields energy. To determine the genetic basis of energy conservation, we measured the fitness of thousands of pooled mutants of Desulfovibrio alaskensis G20 during growth in 12 different combinations of electron donors and acceptors. We show that ion pumping by the ferr...

Genomic techniques commonly used for assessing distributions of microorganisms in the environment often produce small sample sizes. We investigated artificial neural networks for analyzing the distributions of nitrite reductase genes (nirS and nirK) and two sets of dissimilatory sulfite reductase genes (dsrAB1 and dsrAB2) in small sample sets. Data reduction (to reduce the number of input param...