Results 21 to 30 of about 47,589 (235)

Rapid Trace Detection of Sulfite Residue in White Wine Using a Multichannel Colorimetric Nanozyme Sensor

Foods, 2023
As a commonly used food additive, sulfite (SO32−) is popular with food manufacturers due to the functions of bleaching, sterilizing, and oxidation resistance. However, excess sulfites can pose a threat to human health.
Xiaoyue Yue, Long Fu, Chaoyun Wu, Sheng Xu, Yanhong Bai   +4 more
doaj   +1 more source

New Insights into the Cystine-Sulfite Reaction

Molecules, 2019
The mechanism by which cysteine-S-sulfate is formed from the reaction of sulfite with cystine in the absence of a dedicated oxidizing agent is investigated using high-resolution NMR.
Matteo Zecchini, Robert Lucas, Adam Le Gresley   +2 more
doaj   +1 more source

Level of Sulfite Oxidase Activity Affects Sulfur and Carbon Metabolism in Arabidopsis

Frontiers in Plant Science, 2021
Molybdenum cofactor containing sulfite oxidase (SO) enzyme is an important player in protecting plants against exogenous toxic sulfite. It was also demonstrated that SO activity is essential to cope with rising dark-induced endogenous sulfite levels and ...
Dinara Oshanova, Assylay Kurmanbayeva, Aizat Bekturova, Aigerim Soltabayeva, Zhadyrassyn Nurbekova, Dominic Standing, Arvind Kumar Dubey, Moshe Sagi   +7 more
doaj   +1 more source

Geochemical and Photochemical Constraints on S[IV] Concentrations in Natural Waters on Prebiotic Earth

AGU Advances, 2023
Aqueous S[IV] species (HSO3−, SO32−) derived from volcanogenic atmospheric SO2 are important to planetary habitability through their roles in proposed origins‐of‐life chemistry and influence on atmospheric sulfur haze formation, but the early cycling of ...
Sukrit Ranjan, Khaled Abdelazim, Gabriella G. Lozano, Sangita Mandal, Cindy Y. Zhou, Corinna L. Kufner, Zoe R. Todd, Nita Sahai, Dimitar D. Sasselov   +8 more
doaj   +1 more source

Autophagy is required for sulfur dioxide tolerance in Saccharomyces cerevisiae

Microbial Biotechnology, 2020
Summary Sulfiting agents are among the most widely used preservatives in the food and beverages industries, including winemaking, and one of their main functions is inhibition of spoilage microorganisms.
Eva Valero, Jordi Tronchoni, Pilar Morales, Ramon Gonzalez   +3 more
doaj   +1 more source

Simple Flow-Based System with an In-Line Membrane Gas–Liquid Separation Unit and a Contactless Conductivity Detector for the Direct Determination of Sulfite in Clear and Turbid Food Samples

Membranes, 2020
This study presents a simple flow-based system for the determination of the preservative agent sulfite in food and beverages. The standard method of conversion of sulfite ions into SO2 gas by acidification is employed to separate the sulfite from sample ...
Aulia Ayuning Tyas, Thitaporn Sonsa-ard, Kanchana Uraisin, Duangjai Nacapricha, Phoonthawee Saetear   +4 more
doaj   +1 more source

Sulfur dioxide exploitation by electrochemical oxidation of sulfite in near-neutral pH electrolytes: A kinetics and mechanistic study

Electrochemistry Communications, 2019
Electrochemical oxidation of sulfite ions offers an efficient and profitable approach to the conversion of sulfur dioxide, a harmful air pollutant, into valuable by-products via flue gas desulfurization.
R.A. Márquez-Montes, R.E. Orozco-Mena, D. Lardizábal-Gutiérrez, D. Chávez-Flores, A. López-Ortíz, V.H. Ramos-Sánchez   +5 more
doaj   +1 more source

Myelin Disruption, Neuroinflammation, and Oxidative Stress Induced by Sulfite in the Striatum of Rats Are Mitigated by the pan-PPAR agonist Bezafibrate

Cells, 2023
Sulfite predominantly accumulates in the brain of patients with isolated sulfite oxidase (ISOD) and molybdenum cofactor (MoCD) deficiencies. Patients present with severe neurological symptoms and basal ganglia alterations, the pathophysiology of which is
Nícolas Manzke Glänzel, Belisa Parmeggiani, Mateus Grings, Bianca Seminotti, Morgana Brondani, Larissa D. Bobermin, César A. J. Ribeiro, André Quincozes-Santos, Jerry Vockley, Guilhian Leipnitz   +9 more
doaj   +1 more source

An ESIPT‐Based Ratiometric Fluorescent Probe for Highly Sensitive and Rapid Detection of Sulfite in Living Cells

ChemistryOpen, 2019
The novel ratiometric fluorescent probe HPQRB with an ESIPT effect based on Michael addition for highly sensitive and fast detection of sulfite in living HepG2 cells is reported. HPQRB can be easily synthesized by a two‐step condensation reaction.
Yupeng Liu, Dr. Tian‐Bing Ren, Dr. Dan Cheng, Jianing Hou, Prof. Dongdong Su, Prof. Lin Yuan   +5 more
doaj   +1 more source

Sulfite-Promoted Synthesis of N‑Difluoromethyl­thioureas via the Reaction of Azoles with Bromo­difluoro­acetate and Elemental Sulfur

, 2018
A sulfite-promoted transformation of azoles into N-difluoromethyl­thioureas through N-difluoromethylation and sulfuration has been developed. In this reaction, inexpensive ethyl bromodifluoroacetate and nontoxic elemental sulfur were used as the ...
Ri-Yuan Tang (546362), Jian-Chao Deng (6165971), Yong-Chao Gao (6165974), Zhao-Dong Li (6165977), Zhu Zhu (142480), Li Xu (108702)   +5 more
core   +1 more source