Results 111 to 120 of about 47,589 (235)

Determination of Sulfites in Dried Fruits by Paper Spray Ionization Tandem Mass Spectrometry

open access: yesMolecules
Sulfite, a widely used food additive, is subject to regulated labeling. The extraction of sulfite as the stable hydroxymethylsulfonate (HMS) form and its quantitative analysis by liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been ...
Donghoon Lee   +6 more
doaj   +1 more source

Microbial sulfite respiration.

open access: yes, 2013
Despite its reactivity and hence toxicity to living cells, sulfite is readily converted by various microorganisms using distinct assimilatory and dissimilatory metabolic routes.
Simon, Jörg, Kroneck, Peter M. H.
core  

Role of Lipid in Sulfite-dependent Propofol Dimerization [PDF]

open access: yes, 2004
Background: During long-term intravenous infusions, sulfite in sulfite-containing propofol emulsions can cause the peroxidation of lipid and dimerization of propofol.
B S   +3 more
core  

Effect of sulfite on antioxidant enzymes and lipid peroxidation in normal and sulfite oxidase-deficient rat erythrocytes

open access: yes, 2010
Sulfite and related chemical such as sulfite salts and sulfur dioxide has been used as a preservative in food and drugs. This molecule has also been generated from the catabolism of sulfur-containing amino acids.
Suleyman Oktar   +7 more
core   +1 more source

Mechanical, rheological, and durability performances of GGBS‐based concrete for potential application to prestressed structures

open access: yesStructural Concrete, EarlyView.
Abstract Ground granulated blast‐furnace slag (GGBS) is a widely used clinker substitute in concrete, recognized for its potential to significantly reduce environmental impacts. However, its application in prestressed concrete remains limited in several countries, mainly due to concerns regarding early‐age mechanical performance and long‐term ...
D. Rolando Baldiviezo   +6 more
wiley   +1 more source

Effect of sulfite treatment on total antioxidant capacity, total oxidant status, lipid hydroperoxide, and total free sulfydryl groups contents in normal and sulfite oxidase-deficient rat plasma

open access: yes, 2009
Sulfites, which are commonly used as preservatives, are continuously formed in the body during the metabolism of sulfur-containing amino acids. Sulfite oxidase (SOX) is an essential enzyme in the pathway of the oxidative degradation of sulfite to sulfate
Erel, O.   +6 more
core   +1 more source

A comprehensive study on ferredoxin isoforms in the cyanobacterium Synechocystis sp. PCC 6803

open access: yesThe FEBS Journal, EarlyView.
Ferredoxins are small FeS cluster‐containing proteins that play a central role in distributing electrons within the cell. The cyanobacterium Synechocystis sp. PCC 6803 contains several ferredoxin isoforms and their biophysical properties (UV/Vis and EPR spectra, Em potential), expression patterns, and interactions with the electron donors photosystem I
Marko Boehm   +14 more
wiley   +1 more source

Quantification of Sulfur Speciation in Apatites: Comparison of the XAS, XPS and EPMA Techniques

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Sulfur speciation in apatites has been determined by S K‐edge X‐ray absorption near‐edge structure (XANES) spectroscopy, S 2p X‐ray photoelectron spectroscopy (XPS) and electron probe microanalysis (EPMA). XANES provides the most sensitive and accurate quantification of sulfur speciation.
Yuzhou Feng   +8 more
wiley   +1 more source

Effect of sulfite exposure on zinc, iron, and copper levels in rat liver and kidney tissues

open access: yes, 2006
Sulfite is a potentially toxic molecule that might enter the body via ingestion, inhalation, or injection. For cellular detoxification, mammalians rely on sulfite oxidase to convert sulfite to sulfate.
Akça, Hakan   +6 more
core   +1 more source

Energetic costs of catch and release angling in Brook Trout (Salvelinus fontinalis) at two temperatures

open access: yesJournal of Fish Biology, EarlyView.
Abstract Catch and release (C&R) angling is a common practice in recreational fisheries, which can involve a range of acute stressors for fish that lead to physiological and behavioural impairments. Following a C&R event, energy is expended to fuel recovery, while a cessation in feeding can limit energy intake.
Ryan Y. Hodgson   +4 more
wiley   +1 more source

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