Sulfites - Science topic

Natural minerals are characterized by their variety, low cost, and environmental friendliness. However, actually, low-end exploitation plays a master role in the use of minerals, and the utilization of high-appended benefits needs to be strengthened. In recent years, the lithium-ion batteries have been extensively utilized in electric automobiles a...

This study investigated the feasibility of using semi-dry desulfurization ash (DA) in combination with blast furnace slag (BFS) to prepare gelling materials, aiming to improve the resource utilization of DA. The effects of DA dosage and mechanical grinding on the compressive strength and hydration mechanism of BFS-DA gelling materials were investig...

Background Taurine and betaine are important nutrients in the Hong Kong oyster (Crassostrea hongkongensis) and have many important biological properties. To investigate the characteristics of taurine and betaine and identify single nucleotide polymorphisms (SNPs) associated with traits in C. hongkongensis, we cloned the full-length cDNA of key gene...

Peptide couplings have been a subject of investigation for over a century, with modern research seeking to discover new methodologies that minimize purification steps, minimize reagent expense, and/or decrease reaction times. Of the numerous coupling reagents available, sulfur(IV) fluorides have potential as they can effectively transform carboxyli...

Bacteria have evolved multiple strategies to sense and respond to the availability of inorganic reduced sulfur compounds such as thiosulfate. In Hyphomicrobium denitrificans , an obligately chemoorganoheterotrophic Alphaproteobacterium, the use of thiosulfate as a supplemental electron donor is regulated by two homologous sulfane-sulfur-responsive...

Fluorescent probes have wide applications in biological and environmental analysis due to their advantages of simple operation, convenient flexibility, high sensitivity and efficiency. They are considered to be promising tools for accurate analysis of agriculture- and food-related hazardous substances. In this review, the types and characteristics...

The aim of the study is to assess the risks of deviations in the quality of white sugar of Extra and TS2 categories based on the color standard of the solution in the technological production process. Risk identification was carried out using the expert evaluation method by a group of five experts. The risk priority rank was calculated as the produ...

Historical tempera paints exposed to pollutant gases suffer chemical and mineralogical deterioration which manifests through physical changes. Knowledge about these changes is fundamental to develop strategies for preventive conservation of wall paintings. In this research, binary tempera mock-ups composed of calcite, gypsum or lead white mixed wit...

Pyrite and calcium sulfite were used to remove iron and manganese from an acidic aqueous solution. The concentration of Fe was decreased to be smaller than 0.05 g/L in 60 min when pyrite and air were added into the acidic aqueous solution, but the concentration of Mn in the solution remained unchanged. After the process of iron removal, calcium sul...

The current study performed drying of tomato slices in a drying atmosphere with hydrogen gas (RADMIX; a gaseous mixture of 4% hydrogen, 5% carbon dioxide and 91% nitrogen), and compared with 100% air, 100% nitrogen drying environments. All the drying experiments were carried out at 60°C. Control samples and pretreated samples with 1% Potassium meta...

Despite extensive research on the use of salts to enhance micellar growth, numerous questions remain regarding the impact of ionic exchange and molecular structure on charge neutralization. This study looks into how certain cations (Na⁺, Ca²⁺, and Mg²⁺) affect the structure of a cocamidopropyl betaine CAPB and sodium dodecylbenzenesulfonate SDBS su...

Compared with the conventional analytical methods, nanozyme-based colorimetric sensors offer simpler and more accessible solutions for point-of-need food safety monitoring. Herein, Alginate-Cu (AlgCu) is reported as a robust laccase mimetic nanozyme for the colorimetric detection of sulfite in red wine, a common preservative in winemaking. AlgCu re...

Current application of clean water aeration test standards for wastewater treatment systems is based on the most commonly and internationally used standards for the clean water test, such as the ASCE(USA), CEN(EU/EFTA), and DWA(Germany). All the standards are mostly unified in respect to the methodology employed to calculate the oxygen mass transfe...

The role of sulfur-containing drugs, disulfiram (DSF) and Nacetylcysteine (NAC), in alleviating neuroinflammation is poorly understood. The objective of this study was to examine the effect of DSF and NAC on memory and on the metabolism of L-cysteine and inflammation-related parameters in the cerebral cortex of rats in a model of neuroinflammation...

Current application of clean water aeration test standards for wastewater treatment systems is based on the most commonly and internationally used standards for the clean water test, such as the ASCE(USA), CEN(EU/EFTA), and DWA(Germany). All the standards are mostly unified in respect to the methodology employed to calculate the oxygen mass transfe...

Genome graphs, including the recently released draft human pangenome graph, can represent the breadth of genetic diversity and thus transcend the limits of traditional linear reference genomes. However, there are no genome-graph-compatible tools for analyzing whole genome bisulfite sequencing (WGBS) data. To close this gap, we introduce methylGraph...

Avoiding atmospheric pollution with sulfur dioxide is generally achieved by its absorption from combustion gases in alkaline solutions and conversion to sulfites. Afterwards, sulfites can be transformed into neutral and environmentally safe chemicals by oxidation to sulfates. The oxidation of sulfites to sulfates can also be carried out in a cell i...

Currently, iron-catalyzed low-valent sulfur species processes are regarded as potentially valuable advanced oxidation processes (AOPs) in wastewater treatment. As a commonly used low-valent sulfur species in the food industry, metabisulfite (MBS) can undergo decomposition to bisulfite when dissolved in water. Therefore, the combination of MBS with...

The pulp and paper mills generates substantial amounts of sludge, posing significant environmental challenge. Addressing this issue, this review explores the dual objective of renewable energy generation and mitigating the environmental impact of pulp-paper mill sludge (PPMS), filling a critical gap in the existing literature. PPMS is recognized as...

Potato (Solanum tuberosum L.) is the world’s third most popular vegetable in terms of consumption and the fourth most produced. Potatoes can be easily cultivated in different climates and locations around the globe and often in soils contaminated by heavy metals due to industrial activities. This study assessed heavy metal accumulation in different...

Iodine, being an important resource, must be recovered and reused. Iodine is not only attracted to the hydrophobic silicone membrane but also easily vaporized. In this study, we explored the use of five types of silicone hollow fiber membrane modules (SFMMs) for separating iodine in the gaseous phase. In the SFMM, iodine gas and the recovery soluti...

Food is necessary for all living humans to survive. Numerous nutrients, including proteins, lipids, carbs, vitamins, and minerals, are found in food. An organism consumes and breaks down these nutrients to create energy needed to support development and preserve regular bodily functions. Food products can deteriorate due to microbiological, enzymat...

Fiber is essential for rumen health, microbial fermentation, and the energy supply of herbi-vores. Even though the study of fecal fiber contents (neutral detergent fiber NDF, acid detergent fiber ADF, and acid detergent lignin ADL) using near-infrared reflectance spectroscopy (NIRS) has allowed investigating nutritional ecology of different herbivo...

Fiber is essential for rumen health, microbial fermentation, and the energy supply of herbivores. Even though the study of fecal fiber contents (neutral detergent fiber NDF, acid detergent fiber ADF, and acid detergent lignin ADL) using near-infrared reflectance spectroscopy (NIRS) has allowed investigating nutritional ecology of different herbivor...

Citation: Pachnowska, K.; Kochel-Karakulska, J.; Augustyniak, A.; Obradović, V.; Ochmian, I.; Lachowicz-Wiśniewska, S.; Kapusta, I.; Maślana, K.; Mijowska, E.; Cendrowski, K. UV-C and Nanomaterial-Based Approaches for Sulfite-Free Wine Preservation: Effects on Polyphenol Profile and Microbiological Quality. Molecules 2025, 30, 221. https://doi. Abs...

Photoelectrochemical water splitting offers a synergistic method for producing hydrogen using solar energy and an external bias with no emissions. Since the water oxidation process is a limiting factor in the hydrogen production rate, the use of efficient hole scavengers is crucial for enhancing system performance. This study evaluated the performa...

A novel Gram-negative, motile, rod-shaped bacterium, designated 4137-clT, was isolated from a thermal spring of North Ossetia (Russian Federation). Strain 4137-clT grew at 30–50 °C (optimum 42 °C) with 0–3.5% NaCl (optimum 0–0.3%) and within pH range 4.0–8.7 (optimum pH 6.8–7.3). It was a strictly anaerobic microorganism capable of fermentation and...

Background and Objective: Traditional corn-based bread, akandji is a Beninese foodstuff the conditions of its production and its properties remain little studied. The present study aimed to evaluate the technological production parameters and the microbiological and nutritional properties of akandji. Materials and Methods: The akandjiʼs production...

Redox potential is a solution property that influences specific yeast and bacterial activities and the rate of fermentation completion. There is a need to control it if reproducible fermentation outcomes are to be achieved and reliable conclusions are drawn at both the research and commercial scale of wine fermentation. Desirable outcomes that have...

Traditional drying is a highly energy‐intensive process, accounting for approximately 15% of total manufacturing cost, it often resulting in reduced product quality due to low drying efficiency. Biological and chemical agents, referred to as biochemical drying improvers, are employed as pretreatments to enhance both drying characteristics and quali...

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In this study, the effect of sulfite and sodium hydroxide pretreatment on aspen CTMP fiber properties was examined in comparison with the impregnation with water only, aiming to understand how the impregnation chemicals affect fibre morphology and fibre surface chemistry and how these properties relate to fiber separation, refining, and pulp proper...

Sulfites are commonly used as chemical preservatives in the food industry. The aim of this study was to estimate the dietary exposure of children to sulfites in Morocco and assesses the potential health risks associated with their consumption. Exposure was estimated by combining the maximum permitted levels (MPLs) and mean analytical levels of sulf...

Litchi juice fermented by Lactobacillus casei was heated (95°C, 1 min) and stored in a dark place at 25°C. Changes in quality attributes (color, 5-hydroxymethylfurfural (5-HMF) phenolic compounds, antioxidant capacity, sugars, free amino acids, and others) related to browning in fermented litchi juice were investigated during the six months of stor...

Microbially mediated redox processes of sulfur compounds are closely related to the occurrence of iron oxides in natural ecosystems. However, so far, no pure culture has been reported to couple sulfur oxidation to iron reduction under neutral or alkaline conditions. Here, we report on a pure culture of a sulfur-oxidizing and iron-reducing bacterium...

Polysulfide ions play a crucial role in both the lithospheric and biospheric sulfur cycles. This study reveals the coexistence of various polysulfides (·S2⁻, ·S3⁻ and S2²⁻) alongside sulfates (SO4²⁻) and sulfites (SO3²⁻) in afghanite. Upon subjecting afghanite to heat treatment across a range of temperature, sulfur species within the mineral underg...

Background Molybdenum cofactor deficiency (MoCD) is a rare metabolic disorder caused by pathogenic variants in the highly conserved biosynthetic pathway of molybdenum cofactor (MoCo), resulting in sulfite intoxication. MoCD may present in a clinically severe, fatal form marked by intractable seizures after birth, hyperekplexia, microcephaly and cer...

Background Biorefineries usually focus on the production of low-value commodities, such as bioethanol, platform chemicals or single cell protein. Shifting production to bioactive compounds, such as antimicrobial peptides, could provide an opportunity to increase the economic viability of biorefineries. Results Recombinant production of the antimic...

Main conclusion This review highlights the sulfur transporters, key enzymes and their encoding genes involved in plant sulfur anabolism, focusing on their occurrence, chemistry, location, function, and regulation within sulfur assimilation pathways. Abstract Sulfur, a vital element for plant life, plays diverse roles in metabolism and stress respo...

Bu işdə kimyəvi çökmə yolu ilə müxtəlif qalınlıqda nazik kadmium selenid plyonkaları alınmış və onlarda faza əmələ gəlmə prosesləri tədqiq edilmişdir. Alınan nazik təbəqələrin qalınlığı d=150-500 nm-dir. Struktur tədqiqatları rentgen şüala-rının difraksiyasından istifadə etməklə aparılmışdır. Otaq temperaturunda alınan spektrlər təhlil edilmişdir....

Bu çalışmada, iyonofor olan diklorobis(metildifenilfosfin)paladyum(II) kompleksinin kullanıldığı yeni bir tiyosiyanat-seçici katı-temaslı nanokompozit elektrot hazırlandı. Bazı metal oksit nanopartiküllerinin karbon pasta bileşimine eklenmesiyle hazırlanan bu elektrodun en iyi performans özelliklerinin sergilendiği optimum bileşim % 11,6 grafit toz...

The long process of the assimilatory sulfate-reduction consists of sulfate reduction to H 2 S and then H 2 S assimilation for cysteine synthesis. The concept has not been challenged for a long time until now. Herein, phylogenetic analysis grouped assimilatory sulfite reductases into five clusters and we re-examined four representatives from two maj...

This study elucidates the presence of a cathode electrolyte interphase (CEI) at graphite positive electrodes (PEs) and assesses its impact on the performance of dual‐ion batteries, being promising candidates for cost‐efficient and sustainable stationary energy storage. Indeed, electrolyte oxidation increases during charge (5 V vs Li|Li⁺) for decrea...

The reaction of [RuIII(pic)3] (pic⁻=picolinate) and sulfite (SO3²⁻) resulting in the formation of [RuII(pic)3] ⁻ and sulfate (SO4²⁻) has been studied spectrophotometrically and kinetically in aqueous solution. The rate of the reaction studied by following the appearance of the MLCT (metal to ligand charge transfer) band of the [RuII(pic)3)]⁻ comple...

Hydrogen sulfide is a lethal toxic gas that disrupts cellular respiration in the mitochondrial system. Currently, no antidote is available for the clinical treatment of hydrogen sulfide poisoning. In this study, we investigated the function of iron(III)porphyrin complexes as hydrogen sulfide scavengers in water and evaluated their potential use as...

An innovative method for bubble detection and characterization in multiphase flows using advanced computer vision and neural network algorithms is introduced. Building on the research group’s previous findings, this study combines high-speed video capture with advanced deep learning techniques to enhance bubble detection accuracy and dynamic analys...

This study investigates the similarities and differences among four types of superplasticizers-Lignosulfonate (LS), Polycarboxylate Ether (PCE), Polyethylene Glycol (PEG), and Triethanolamine (TEA) in cement concrete systems. The comparison focuses on three key parameters: normal consistency (NC), setting time, workability and compressive strength....

Sulfite-catalyzed acid pretreatment to overcome the inherent recalcitrance of biomass offers a significant advantage in terms of obtaining high glucose conversion. However, the residual lignin after enzymatic hydrolysis has not been fully exploited. Herein, this study introduced a joint approach using sulfite-catalyzed acid pretreatment (SPROL) and...

Food preservation aims to maintain safe and nutritious food for extended periods by inhibiting microbial growth that causes spoilage and poses health risks. Traditional chemical preservatives like sodium sulfite, sodium nitrite, sodium benzoate, tBHQ and BHA have raised concerns due to potential carcinogenicity, genotoxicity and allergies with long...

Interaction in the system "sulfur dioxide–diethylenetriamine (or bis-(hexamethylene)triamine)–water–air oxygen" results in a mixture of double salts (diethylenetriammonium bis(sulfito)-dithionate (Ia) and bis(sulfito)-sulfate trihydrate diethylenetriammonium (Ib)) or bis(hexamethylene)triammonium sulfate (II). The obtained ammonium salts of sulfur-...

This study investigates Escherichia coli (E. coli) contamination in drinking water in rural Prey Tom District, Kampot Province, and urban railway communities in Phnom Penh, Cambodia. Utilizing Hydrogen Sulfite (H2S) test kits, water samples were collected from 39 urban households and 75 rural households. In urban areas, 71.80% of surveyed participa...

The discharge of medical and domestic wastewater has resulted in increasing levels of pharmaceutical pollutants in water bodies. We combined dielectric barrier discharge (DBD) technology with an Fe3⁺/sodium sulfite oxidation system to address the limitations associated with traditional water treatment technologies in removing carbamazepine, explori...

Host genetics and environmental factors have been associated with effects on the mouse fecal microbiome; however, the commercial source of mice remains the dominant factor. Increasing evidence indicates that supplier-specific microbiomes confer differences in disease susceptibility in models of inflammatory conditions, as well as baseline behavior...

Despite ample evidence that extensive water–rock interactions occurred under a CO2-dominated atmosphere on early Mars, carbonate minerals are relatively rare at the surface. One possibility to explain this scarcity is that carbonates were initially abundant, but were later destroyed when atmospheric conditions changed, particularly as a result of v...

Current application of clean water aeration test standards for wastewater treatment systems is based on the most commonly and internationally used standards for the clean water test, such as the ASCE(USA), CEN(EU/EFTA), and DWA(Germany). All the standards are mostly unified with respect to the methodology employed to calculate the oxygen mass trans...

Sulfate- and sulfite-reducing bacteria (SRB) are a group of strict anaerobes found within the human gut. Bilophila wadsworthia, a sulfite-reducing bacterium which produces hydrogen sulfide (H2S) from taurine and isethionate respiration, is a common member of the healthy commensal human gut microbiota but has been implicated in several disease state...

Bamboo is a versatile and fast-growing plant that generates cellulose with long fibers. This study examined the fiber morphology, chemical composition, and pulp and paper qualities of the bamboo Oxytenanthera abyssinica culm. The purpose was to assess their potential as an alternative feedstock for pulping and papermaking. The fiber characteristics...

Introduction Lignin is a promising resource for obtaining aromatic materials, however, its heterogeneous structure poses a challenge for effective utilization. One approach to produce homogeneous aromatic materials from lignin involves the application of microbial catabolism, which is gaining attention. This current study focused on constructing a...

For a long time, sulfur dioxide (SO 2) has been the most universally used additive in winemaking. With its wide range of effects, ease of use, and low cost, sulfur dioxide has not yet been completely replaced by any process or substance. Since the expected trend for the near future is to keep reducing the concentration of sulfites, many investigati...

Microbial dissimilatory sulfate reduction is a key process in the global sulfur and carbon cycles in anoxic ecosystems. In this anaerobic respiration, sulfate is phosphorylated and reduced to sulfite, which is further reduced to a DsrC‐trisulfide by the dissimilatory sulfite reductase DsrAB. DsrD is a small protein that acts as an allosteric activa...

To prevent the residual sulfur dioxide in Chinese herbal medicines (CHM) caused by sulfur fumigation, which may lead to severe health issues, there is an urgent need for a rapid and quantitative detection technique. Sodium borohydride was used as a reducing agent to convert sulfur dioxide into hydrogen sulfide, which was then detected using lead ac...

This study presents the electrochemical deposition approach used to generate Ni thin films on a titanium electrode covered with ZnO nanoparticles aiming to improve the sulfite’s electrocatalytic oxidation. The influence of different electrodeposition parameters on the growth of ZnO-Ni/Ti films has been studied. SEM and EDX elemental analyses were e...

Chlorinated organic pollutants widely exist in aquatic environments and threaten human health. Catalytic approaches are proposed for their elimination, but sluggish degradation, incomplete dechlorination, and catalyst recovery remain extremely challenging. Here we show efficient dechlorination using ferrous oxide/graphene oxide catalytic membranes...

A highly sensitive method for the determination of total arsenic (As) has been developed using photochemical vapor generation (PVG) coupled with inductively coupled plasma mass spectrometry (ICP MS). The efficient PVG of As is reported for the first time in the presence of Cd(II) in diluted formic acid (FA) medium. The PVG efficiency of 93 ± 1% can...

Climate change is accelerating deoxygenation in aquatic ecosystems worldwide, causing consequences for aerobic organisms. Empirically studying the effects of deoxygenation on biological processes is therefore critical. Multiple methods for inducing hypoxia in physiological studies have been developed, each with pros and cons. Using oxygen scavenger...

An altered skin morphology and physiology are the most evident signs of increasing age in humans. These changes may affect pivotal skin functions. Eggshell membrane (ESM) is an egg byproduct that is regarded as waste. Nonetheless, studies have shown its beneficial effect in preventing dermal aging. Currently, only chicken ESM has been extensively s...

In order to reduce chronic hair flyaways/frizz, both reducing and oxidizing agents have to be used, leaving aside the hair damage issues. This study presents changes in hair morphology caused by treatment with a shampoo containing only reducing agents, excluding oxidizing agents that affect critical hair damages. As a result of flyaway/frizz improv...

One way in which we can attempt to relate chemical pathways to geochemical environments is by studying the kinetics of a given sequence of reactions and identifying the conditions under which this chemistry is the most productive. Many prebiotic reactions rely on a source of fixed carbon, therefore chemical pathways that suggest prebiotically plaus...

Based on the analysis of scientific literature, theoretical and practical knowledge about the technological role and features of the use of sulfur dioxide in wine technology is summarized. The factors influencing antimicrobial and antioxidant activity of sulfur dioxide in wine are analyzed. Existing methods and preparations for sulfiting wine produ...

This study successfully prepared three environmentally friendly Schiff base network (SNW) polymers, SNW‐1, SNW‐2, and SNW‐3, using melamine and aldehyde compounds as raw materials through a microwave‐assisted synthesis method. The SNW materials were applied to catalyze the copolymerization reaction of SO2 and epoxides. Through detailed analysis of...

Background: Spices from the Allium genus season food worldwide, and their widespread use may produce allergic reactions by contact or ingestion. However, the Non-IgE-mediated immunoreactivity against these allergens has not yet been adequately investigated. Aim: To evaluate the potential of the Tube Titration of Precipitins (TTP) and the Leukocyte...

Cyclic voltammetry is a powerful tool to study enzyme mechanisms. Over the last decade, voltammetry has been applied to probe aspects of nitrogenase catalysis. One aspect that is often overlooked is the effect of dithionite (S2O4²⁻, DTH) on nitrogenase and the mediators used during voltammetry experiments. Dithionite is routinely added to purificat...

Partial delignification of alder wood specimens was performed with alkaline sulfite and peracetic acid (PAA) methods, and subsequently the delignified samples were saturated with furfuryl alcohol, as an eco-friendly chemical. The aim of delignification before furfurylation was to facilitate the penetration of furfuryl alcohol into the cell wall, in...

Wood-polymer hybrids demonstrate unique perspectives in green architecture, energy-efficiency building, optoelectronics, photovoltaic devices, and energy storage materials. The fabrication of wood-polymer hybrids preliminary involves the acquisition of delignified wood templates. In this framework, the potentiality of species diffused in the Medite...

z Biga Yarımadası ve civarı, Türkiye'nin önemli cevher oluşum kuşaklarından birisi olup, bölgede porfiri ve epitermal yatakların yanı sıra skarn tipi Pb-Zn yatakları da bulunmaktadır. Çatalçam cevherleşmesi, Çatalçam sokulumuna bağlı yüzeyde geniş alanlarda yayılım gösteren propilitik ve fillik alterasyonla birlikte galena+sfalerit+pirit±kalkopirit...

In the current study, we synthesized copper oxide nanostructures (CuO NSs) via a facile hydrothermal procedure. We characterized them with the help of scanning electron microscopy (SEM) and X-ray diffractometry (XRD). SEM study revealed that CuO NSs inherited nanoneedles-based flowering geometry with a porous nature, while XRD proved the crystallin...

During the pulping process, either alkali or alkali earth metals are added in a cooking solution to turn wood chips into pulp, and these alkali and alkali earth metals (AAEMs) end up in the black liquor. These AAEMs are known to catalyze the gasification process, by lowering the reaction temperature and degrading tar in the syngas. Of the various b...

Sulfate- and sulfite-reducing bacteria (SRB) are a group of strict anaerobes found within the human gut. Bilophila wadsworthia , a sulfite-reducing bacterium which produces hydrogen sulfide (H 2 S) from taurine and isethionate respiration is a common member of the healthy commensal human gut microbiota, but has been implicated in several disease st...

Using light as an external stimulus to control (bio)chemical processes offers many distinct advantages. Most importantly, it allows for spatiotemporal control simply through operating the light source. Photocleavable protecting groups (PPGs) are a cornerstone class of compounds that are used to achieve photocontrol over (bio)chemical processes. PPG...