The comparative study of the antiradical activity of carnosine and vitamin C was carried out by the means of the evaluation of quenching of ESR signals of 2,2-diphenyl-1-picrylhydrazyl (DFPH) and semiquinone radical of alpha-tocopherol. It was shown that carnosine is not able to quench the ESR signals of the stable radical of DFPH and semiquinone radical of alpha-tocopherol. It permits to conclude that: a) carnosine does not interact directly with highly active free radicals; b) carnosine is unable to regenerate the radical of alpha-tocopherol to form the antiradical synergistic couple. The data obtained are consistent with the idea that there is a difference between on the antioxidant mechanism action of vitamin C and carnosine due to the difference in the antiradical activity of these compounds.
Download full-text PDF |
Source |
---|
Food Res Int
January 2025
Research Group for Bioactives-Analysis and Application, National Food Institute, Technical University of Denmark, Lyngby, Denmark. Electronic address:
This study aimed to promote the valorization of lupin seeds by extracting both non-polar and polar fractions to produce a protein-rich flour suitable for food applications. Green extraction methods such as Supercritical Fluid Extraction (SFE) and SFE followed by gas-expanded liquid extraction with ethanol/CO mixtures were employed. SFE yielded lupin oil with extraction yields ranging from 2.
View Article and Find Full Text PDFMolecules
December 2024
Institute of Chemistry, University of Miskolc, 3515 Miskolc-Egyetemváros, Hungary.
In this work, α-tocopherol and trolox were studied as compounds that have high biological activity. α-Tocopherol is considered a food additive because the refining process of vegetable oils causes the depletion of this vitamin, and thus, its inclusion is required to keep them from oxidizing. Computational tools have determined the antioxidant activity of these additives.
View Article and Find Full Text PDFACS Omega
December 2024
Laboratory of Bioactive Natural Products, Department of Biochemistry, Institute of Biological Science, Federal University of Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil.
is a plant widely cultivated for food and medicinal purposes. species have been reported as anti-inflammatory, antibacterial, anxiolytic, and antinephritic agents. This study aimed to evaluate the anti-inflammatory potential of the ethanolic extract (EE) from the aerial parts of and its most promising fraction in models of acute and chronic inflammation, including a psoriasis-like mouse model.
View Article and Find Full Text PDFFood Res Int
December 2024
Faculty of Agricultural, Environmental and Food Sciences, Free University of Bolzano, Piazza Università, 1, Bolzano 39100, Italy.
Several spectrophotometric assays, such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC), are commonly used to assess antioxidant activity. However, these methods often lack real-world relevance as they do not inhibit autoxidation in actual food substrates. Although direct measurement of oxygen consumption or peroxide formation during inhibited autoxidation offers certain advantages, it is labor intensive and requires specialized equipment.
View Article and Find Full Text PDFFood Chem
February 2025
Agricultural Engineering Research Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran; Assistant Professor, Department of Mechanical Engineering, National University of Skills (NUS), Tehran, Iran.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!