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Salicylic Acid Improved the Growth of and Increased the Proportion of -β-Carotene Isomers.
Mar Drugs
January 2025
College of Food Science and Engineering, Ningbo University, Ningbo 315211, China.
is an important source of natural β-carotene (containing and isomers) for industrial production. The phytohormone salicylic acid (SA) has been proven to have impacts on the stress resistance of higher plants, but research on microalgae is currently unclear. In this study, the effects of SA on the growth, biochemical composition, antioxidant enzyme activity, key enzymes of β-carotene synthesis, and cis-and trans-isomers of β-carotene in under different salt concentrations were investigated.
View Article and Find Full Text PDFThe Effects of Astaxanthin on Metabolic Syndrome: A Comprehensive Review.
Mar Drugs
December 2024
College of Life Sciences, Qingdao University, Qingdao 266071, China.
Metabolic syndrome (MS) represents a complex cluster of metabolic disorders primarily characterized by obesity, insulin resistance, hyperglycemia, dyslipidemia, hypertension, and hyperuricemia. Diet and functional ingredients play a pivotal role in seeking non-pharmacological strategies to prevent and ameliorate MS. Astaxanthin (AST), a carotenoid found in various marine organisms, exhibits exceptional antioxidant properties and holds great promise as a natural compound that improves MS.
View Article and Find Full Text PDFUnderlying Mechanisms of Chromatographic H/D, H/F, and Isomerism Effects in GC-MS.
Metabolites
January 2025
Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30623 Hannover, Germany.
Charge-free gaseous molecules labeled with deuterium H (D) atoms elute earlier than their protium-analogs H (H) from most stationary GC phases. This effect is known as the chromatographic H/D isotope effect (IE) and can be calculated by dividing the retention times () of the protiated ( ) to those of the deuterated () analytes: IE = /. Analytes labeled with C, N or O have almost identical retention times and lack a chromatographic isotope effect.
View Article and Find Full Text PDFBalancing the Energy and Sensitivity of Primary Explosives: Using Isomers to Prepare Energetic Coordination Compounds.
Inorg Chem
January 2025
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
The performance of energetic coordination compounds (ECCs) is influenced by their components and structure. Modifying the chemical structure of the ligands can balance the detonation performance and sensitivity. This study introduced Cu(3-PZCA)(ClO) () and Cu(2-IZCA)(ClO) (), using 3-PZCA and 2-IZCA as ligands.
View Article and Find Full Text PDFA physiologically based pharmacokinetic (PBPK) model describing the kinetics of a commercial mixture α-, β-, and γ-hexabromocyclododecane exposure in mice.
Arch Toxicol
January 2025
Scientist Emeritus, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
Hexabromocyclododecane (HBCD) is a brominated flame retardant, that is added, but not chemically bonded, to consumer products. HBCD is sold as a commercial-grade HBCD mixture containing three major stereoisomers: alpha (α), beta (β), and gamma (γ), with relative amounts of 12% for α-HBCD, 6% for β-HBCD, and 82% for γ-HBCD. HBCDs are widely measured in the environment and in biological matrices.
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