Science topics: ChemistrySulfites
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Sulfites - Science topic

Inorganic salts of sulfurous acid.
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Highlights The chemical process of local oxidation–partial reduction–deep coupling for stibnite reduction of carbon dots (CDs) is revealed by in-situ high-temperature X-ray diffraction. Sb 2 S 3 @xCDs anode delivers high initial coulombic efficiency in lithium ion batteries (85.2%) and sodium ion batteries (82.9%), respectively. C–S bond influenced...
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Electrolyte additives play a pivotal role in improving the cyclability of the sodium-ion batteries (SIB) by modifying the composition of solid electrolyte interphase (SEI) film. Herein, we select three sulfur-based additives with similar molecular structure (1,3-propane sultone (1,3-PS), prop-1-ene-1,3-sultone (PES) and ethylene sulfate (DTD)), whi...
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In recent years, advanced oxidation processes (AOPs) have indicated the greatest potential in the removal of stable organic compounds, including dyes. In this study, the ultraviolet light-emitting diodes (UV-LEDs) combined with chlorine was evaluated to remove Reactive Blue 19 (RB19) dye from aqueous solution. The effect of key experimental paramet...
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Biomimetic scaffolds that induce bone growth in defects have always been the main focus of bone regeneration research. This study was to develop biomineralization scaffolds using eggshell membranes as the bio-template. The structural and mineralizing characteristics of the inner and outer eggshell membrane (IM and OM) before and after alkaline prot...
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Although hepatocytes require a high amount of oxygen, the liver is a lobule structure with an oxygen gradient by blood flowing into the central vein. The part with the lowest oxygen partial pressure is characterized by a fairly low oxygen level. Thus, the liver is vulnerable to hypoxic environments, such as hypoxemia or low perfusion, leading to hy...
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Rice sulfite reductase (OsSiR) is important protein in reducing sulfite to sulfide. In this paper, it is aimed to shed light on OsSiR’s probable structure, function, and expression using in silico methods and test its responses under drought and salt stresses. Moreover, it was also analyzed if OsSiR was structurally different from other SiR protein...
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The dissimilatory sulfite reductase enzyme has very characteristic active site where the substrate binds to an iron site, ligated by a siroheme macrocycle and a thiol directly connected to a [Fe4S4] cluster. This arrangement gives the enzyme remarkable efficiency in reducing sulfite and nitrite all the way to hydrogen sulfide and ammonia. For the f...
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In this study, the effects of different doses of sulfite on learning, memory, and long term potentiation as well as the relationship of these effects with acetylcholine pathways, Arc and synapsin 1 levels were investigated. Sixty male Wistar albino rats were randomly divided into three groups as control, S100, and S260. Sodiummetabisulfite (S100;10...
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The global demand for lithium-ion batteries (LIBs) has witnessed an unprecedented increase during the last decade and is expected to do so in the future. Although the service life of batteries could be expanded using Circular Economy approaches such as repair or remanufacture, batteries will inevitably become a huge waste stream as electric vehicle...
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The composition of free amino acids (FAAs) in seafood products contributes to characterizing their flavor, as well as freshness and quality during storage. Deep-water rose shrimps (Parapenaues longirostris, Lucas, 1846) (DWRS) are being increasingly harvested in the Mediterranean, and the captured specimens are quickly frozen onboard fishing trawle...
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Herein, we report nanogels comprising diverse feed ratio of polymer hydroxypropyl methylcellulose (HPMC), monomer acrylic acid (AA), and cross-linker methylene bisacrylamide (MBA) fabricated for transdermal delivery of finasteride (FIN). Free radical solution polymerization method with subsequent condensation was employed for the synthesis using am...
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Owing to intrinsically high electrical conductivity and low thermoelectric conductivity, poly(3,4-ethylenedioxithiophene):poly(styrenesulfonate) (PEDOT:PSS) shows promising thermoelectric properties. However, its relatively low power factor limits the practical applications of PEDOT:PSS. Here, we use unique dual post-treatments by sodium sulfite (N...
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One of the alternatives to SO2 as an antimicrobial is the use of bioprotection yeasts, which colonize the medium preventing the proliferation of undesirable microorganisms. In this work, the bioprotective effect of a mixed inoculum formed by Torulaspora delbrueckii/Lachancea thermotolerans during fermentation was evaluated. For this purpose, fermen...
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The Terrestrial Miscellaneous Euryarchaeota Group has been identified in various environments, and the single genome investigated thus far suggests that these archaea are anaerobic sulfite reducers. We assemble 35 new genomes from this group that, based on genome analysis, appear to possess aerobic and facultative anaerobic lifestyles and may oxidi...
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Microbial treatment of industrial wastewater, following with the production of the valuable products using the biomass of the same cells, enhances the economic benefits of biorefineries. The current study aimed to explore the potential of the oleaginous yeast Yarrowia lipolytica for oily and saline fish canning wastewater biotreatment and to evalua...
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This study evaluated the improvement of bisphenol A (BPA) elimination through hydrogen sulfite (HS) coupling with persulfate (PS) activated by low amounts of Fe²⁺. Under the optimum condition (10 μM Fe²⁺, 0.6 mM HS, 0.8 mM PS, pH = 4.0), 100% BPA (5 μM) was removed within 15 min. Sulfate radical (SO4•−) and singlet oxygen (¹O2) were confirmed as th...
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Wine produced by fermentation of Chestnut rose (Rosa roxburghii) hips, known as cili (Chinese-Mandarin), in Guizhou province, and other places in China is becoming popular but there is limited knowledge of suitable yeast strains for its production. In this study, we first investigated the oenological properties of six commercial S. cerevisiae yeast...
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A soybean protein-based adhesive with desired adhesion properties and low processing cost is prepared by a simple and practical method, which is of great significance to the sustainable utilization of resources and human health. Nevertheless, the protein of high-temperature soybean meal (HSM) has a high degree of denaturation and low solubility, en...
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Whole Genome Bisulfite Sequencing (WGBS) is the current standard for DNA methylation profiling. However, this approach is costly as it requires sequencing coverage over the entire genome. Here we introduce Anchor-Based Bisulfite Sequencing (ABBS). ABBS captures accurate DNA methylation information in Escherichia coli and mammals, while requiring up...
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The reductive leaching of Cobalt using sulfur dioxide gas as reducing agent is a complex process. During reductive leaching of Cobalt, iron plays an important role as a catalyst because the direct dissolution of Heterogenite with soluble sulfite compounds is limited by migration into the solid pores. The presence of high state of Cobalt, Manganese...
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Background To provide a reference for hospital drug selection and rational clinical drug selection based on the evaluation of the safety, nutritional quality, and economy of 27 manufacturers of five varieties (18AA, 18AA-I, 18AA-II, 18AA-IV, 18AA-V) of balanced compound amino acids for injection and (18AA-II original research ). Methods The safety...
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Most metals are corroded by air, water, acids, alkalis, and salts. This phenomenon is called corrosion. The word corrosion comes from the Latin word "corrodore" meaning decay. Corrosion is of two types in terms of its physicochemical nature: chemical and electrochemical corrosion. The type of corrosion that occurs in metals depends on the environme...
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Most metals are corroded by air, water, acids, alkalis, and salts. This phenomenon is called corrosion. The word corrosion comes from the Latin word "corrodore" meaning decay. Corrosion is of two types in terms of its physicochemical nature: chemical and electrochemical corrosion. The type of corrosion that occurs in metals depends on the environ...
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The widespread deficiency of iron (Fe) and sulfur (S) is becoming a global concern. The underlying mechanisms regulating Fe and S sensing and signaling have not been well understood. We investigated the crosstalk between Fe and S using mutants impaired in Fe homeostasis, sulfate assimilation, and glutathione (GSH) biosynthesis. We showed that chlor...
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A novel mesophilic and neutrophilic sulfate-reducing bacterium, strain SF6T, was isolated from sediment of a brackish lake in Japan. Cells of strain SF6T were motile and rod-shaped with length of 1.2–2.5 μm and width of 0.6–0.9 μm. Growth was observed at 10–37 °C with an optimum growth temperature of 28 °C. The pH range for growth was 5.8–8.2 with...
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Although high-solid enzymatic hydrolysis has emerged as an efficient strategy of sugar production from lignocellulosic materials, this process requires several steps to increase its efficiency. Current strategies include treatments to remove noncellulosic macromolecules. Here, dilute alkaline extraction was controlled to remove loosely bound xylan...
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Posttranscriptional modifications in RNA have been considered to contribute to disease pathogenesis and tumor progression. NOL1/NOP2/Sun domain family member 2 (NSUN2) is an RNA methyltransferase that promotes tumor progression in several cancers. Pancreatic cancer relapse inevitably occurs even in cases where primary tumors have been successfully...
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Oxidation–reduction-absorption based on sulfite is a promising process for simultaneous removal of NOx and SO2. However, excessive oxidation of sulfite and competitive absorption between NOx and SO2 limit its application. A matching strategy between antioxidants and alkaline agents has been proposed to solve these problems and enhance the absorptio...
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Polychaetes are important benthic macrofauna that lives in sediments, usually in intertidal flats with high organic content and high sulfide. It has been suggested that polychaete bioturbation could perform environmental remediation. During the process, the microbial community plays important roles. Here, we used high-throughput sequencing technolo...
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This study systematically summarized the factors affecting the stability of CNXs, providing a reference for better control and elimination of CNXs. A method for the detection of CNBr and CNI in solution was established using a liquid–liquid extraction/gas chromatography/electron capture detector. Specifically, the method was used to investigate the...
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The effects of CH3COOH and Na2SO3 pretreatment on the structural properties and hydrolyzability of fast-growing Paulownia elongate were investigated. Acetic acid increased cellulose’s crystallinity and hydrolyzability when combined with alkaline sodium sulfite and sodium hydroxide. The cellulose content increased by 21%, the lignin content decrease...
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Spent sulfite liquor (SSL) from softwood processing is rich in hemicellulose (acetyl galactoglucomannan, AcGGM), lignin, and lignin-derived compounds. We investigated the effect of sequential AcGGM purification on the enzymatic bioconversion of AcGGM. SSL was processed through three consecutive purification steps (membrane filtration, precipitation...
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Rice husk ash (RHA) has potential as a supporter of catalysts. In this research, we studied the activity and SO2 tolerance of RHA-based Fe-Cu oxide in the reduction of NO by CO. Characterization methods were employed to study the properties of the catalysts and their SO2 tolerance. Activity and SO2 resistance were also tested at different temperatu...
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Ozone is widely used for storage and processing facilities and food sanitization. In this research, ozone was tested as an alternative to high temperature vacuum must desulfurization in order to make a more sustainable process. Bubbling ozone in highly sulfited red must (mute must) at two treatment temperatures, a significant reduction in total and...
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Fairbanks, Alaska, is a subarctic city with fine particle (PM2.5) concentrations that exceed air quality regulations in winter due to weak dispersion caused by strong atmospheric inversions, local emissions, and the unique chemistry occurring under the cold and dark conditions. Here, we report on observations from the winters of 2020 and 2021, moti...
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As one of the attractive photochemical technologies, sulfite combined with UV light has been demonstrated to be efficient for recalcitrant organic pollutant degradation, but the underlying mechanism of these processes under aerobic conditions has not been fully explored. In this study, we found that diethyl phthalate (DEP) could be efficiently degr...
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The Curiosity rover in Gale crater is investigating a mineral transition observed from orbit—an older “clay unit” to a younger “sulfate unit”—hypothesized to reflect the aridification of Mars' climate. Below this transition, the rover detected crystalline Ca‐sulfates with minor Fe‐sulfates but also found that some fraction of a rock's bulk SO3 is o...
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Heterotrophic bacteria and human mitochondria often use sulfide: quinone oxidoreductase (SQR) and persulfide dioxygenase (PDO) to oxidize sulfide to sulfite and thiosulfate. Bioinformatic analysis showed that the genes encoding RHOD domains were widely presented in annotated sqr-pdo operons and grouped into three types: fused with an SQR domain, fu...
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Molybdenum nitrogenase catalyses the ambient reduction of N2 to NH3 at the M-cluster, a complex cofactor that comprises two metal-sulfur partial cubanes ligated by an interstitial carbide and three belt-sulfurs. A recent crystallographic study suggests binding of N2 via displacement of the belt-sulfur(s) of the M-cluster upon turnover. However, dir...
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Since their first use in the 1930s, shake flasks have been a widely used bioreactor type for screening and process development due to a number of advantages. However, the limited gas-liquid mass transfer capacities—resulting from practical operation limits regarding shaking frequency and filling volumes—are a major drawback. The common way to incre...
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Regarding the cost-effective photo-degradation of ofloxacin (OFL), present study investigates UV/sulfite /ZnO (USZ) in reactor conventional (without baffles) and baffled photocatalytic reactor (BPCR). The optimal condition was 0.77:2:50 sulfite/ZnO/OFL molar ratio, pH 7, and 30 min reaction time for 100% degradation of 200 mg L⁻¹ concentration of O...
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Failure of passive transfer is a management concern for all ruminant species, but is not well described in the literature for camel calves. This case series presents four camel calves (Camelus dromedarius and Camelus bactrianus) referred to a North American veterinary teaching hospital for diagnosis and management of failure of passive transfer. Di...
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In this study, nineteen unmodified lignins from various sources (hardwood, softwood, wheat straw, and corn stover) and isolation processes (kraft, soda, organosolv, sulfite, and enzymatic hydrolysis) were used to replace 30 wt.% of petroleum-based polyol in rigid polyurethane/polyisocyanurate (PUR/PIR) foam formulations. Lignin samples were charact...
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Overview Processed foods make up about 70 percent of the North American diet. Sulfites and other food preservatives are added to these foods largely to limit bacterial contamination. The mouth microbiota and its associated enzymes are the first to encounter food and therefore likely to be the most affected. Methods Eight saliva samples from ten in...
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DNA methylation is a central epigenetic mark that has diverse roles in gene regulation, development, and maintenance of genome integrity. 5 methyl cytosine (5mC) can be interrogated at base resolution in single cells by using bisulfite sequencing (scWGBS). Several different scWGBS strategies have been described in recent years to study DNA methylat...
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The development of a responsive fluorescent probe for the detection of a particular biomolecule in a specific site at the desired moment is important in the fields of bioanalysis and imaging, molecular biology and biomedical research. In this work, we report the development of a remote-light activatable nanoprobe for the fluorescence detection of s...
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The fate of nitrogen is controlled by the competition between nitrate reduction pathways. Denitrification removes nitrogen in the system to the atmosphere, whereas dissimilatory nitrate reduction to ammonia (DNRA) retains nitrate in the form of ammonia. Different microbes specialize in the oxidation of different electron donors, thus electron donor...
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Uncultivated microbial clades (“microbial dark matter”) are inferred to play important, but uncharacterized roles in nutrient cycling. Using Antarctic lake (Ace Lake, Vestfold Hills) metagenomes, 12 metagenome‐assembled genomes (MAGs; 88‐100% complete) were generated for four “dark matter” phyla: six MAGs from Candidatus Auribacterota (= Aureabacte...
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A deep-sea thermophilic bacterium, strain Ax17 T , was isolated from 25 °C hydrothermal fluid at Axial Seamount. It was obligately anaerobic and autotrophic, oxidized molecular hydrogen and formate, and reduced synthetic nanophase Fe(III) (oxyhydr)oxide minerals, sulfate, sulfite, thiosulfate, and elemental sulfur for growth. It produced up to 20 m...
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Eutrophication is an emerging worldwide issue concerning the excessive accumulation of various pollutants in sediments, owing to the release of industrial or household wastewaters to coastal areas. The coastal sediment of Goseong Bay in the Republic of Korea is organically enriched with pollutants, including heavy metals, sulfide, phosphate, and am...
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The Fe(III)-S(IV) system used for advanced oxidation processes (AOPs) at acidic pH has just been proposed and demonstrated valid for very few contaminants in the last several years. In this work, we investigated the effect of ultraviolet A (UVA) radiation on the degradation efficiency of the Fe(III)/S(IV) system at near-neutral pH. Paracetamol (PAR...