Journal ArticleDOI
9H‐xanthene‐2,7‐diols as antioxidants for autoxidation of linoleic acid
Tatsuo Yamamura,Masaki Arashima,Kazumi Nakatani,Takafumi Ishida,Fukiko Yamada,Tomihiro Nishiyama +5 more
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In this paper, the antioxidant properties of 9H-xanthene-2,7-diols and α-tocopherol were studied during the oxidation of linoleic acid in a homogeneous solution and in an aqueous micelle dispersion.Abstract:
The antioxidant activities of 9H-xanthene-2,7-diols and α-tocopherol were studied during the oxidation of linoleic acid in a homogeneous solution and in an aqueous micelle dispersion. The antioxidant activities of 9H-xanthene-2,7-diols for both systems were 1.0–2.4 times greater relative to α-tocopherol. In addition, the 1,3,4,5,6,8-hexamethylxanthene-2,7-diol showed less cytotoxicity toward human fibroblasts than did 2,6-di-t-butyl-4-methylphenol.read more
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Comparative studies of oxidative stability of linseed oil
TL;DR: In this paper, the effect of two antioxidants, α-tocopherol, ascorbyl palmitate, citric acid and ascorbic acid, and ethoxylated ethylene glycol on the oxidative stability of linseed oil was studied.
Journal ArticleDOI
Xanthenes in Medicinal Chemistry - Synthetic strategies and biological activities.
TL;DR: The synthesis of xanthenes through the modification of the carbonyl in position 9 of xanthones represents the most straightforward procedure to easily obtain a variety of (aza)xanthene.
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Antioxidant activities of fused heterocyclic compounds, xanthene-2,7-diols with BHT or catechol skeleton
TL;DR: In this paper, the antioxidant properties of six 1,3,4,5,6,8-hexamethylxanthene-2,7-diols were compared with those of BHT and catechol in the oxidation of tetralin using an oxygen-absorption method.
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Chain-breaking fused heterocyclic antioxidants: Antioxidant activities of 9H-xanthene-2,7-diols and α-tocopherol upon liposomal membranes
TL;DR: In this paper, the authors evaluated the antioxidant properties of 9H-xanthene-2,7-diols and α-tocopherol (α-Toc) upon the oxidation of soybean phosphatidylcholine liposomal membranes.
Journal ArticleDOI
Analysis of the electrical characteristic of linseed oil films exposed to humidity
TL;DR: In this article, the electrical properties of linseed oil films on interdigitated metal electrodes were studied and I/V characterisation both in air and vacuum, current vs. temperature and relative humidity was performed.
References
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Rapid colorimetric assay for cellular growth and survival: Application to proliferation and cytotoxicity assays
TL;DR: A tetrazolium salt has been used to develop a quantitative colorimetric assay for mammalian cell survival and proliferation and is used to measure proliferative lymphokines, mitogen stimulations and complement-mediated lysis.
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Autoxidation of biological molecules. 1. Antioxidant activity of vitamin E and related chain-breaking phenolic antioxidants in vitro
G. W. Burton,K. U. Ingold +1 more
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Autoxidation of biological molecules. 4. Maximizing the antioxidant activity of phenols
Graham W. Burton,Takahisa Doba,Eric J. Gabe,L. Hughes,Florence L. Lee,L. Prasad,Keith U. Ingold +6 more
TL;DR: On mesure les constantes de vitesse de l'elimination of l'hydrogene atomique par les radicaux peroxyles de lα-tocopherol and de 35 phenols structuralement apparentes.
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Antioxidants in relation to lipid peroxidation
TL;DR: The role of antioxidants in lipid peroxidation is reviewed and the rate and mechanism of inhibition by water-soluble and lipid-Soluble, chain-breaking antioxidants have been discussed.
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Cytotoxicity test with simplified crystal violet staining method using microtitre plates and its application to injection drugs.
K. Saotome,H. Morita,M. Umeda +2 more
TL;DR: A cytotoxicity test with the crystal violet staining method was developed using Chinese hamster lung and HeLa S3 cells in 96-well microtitre plates with an automatic plate reader, to facilitate examination of serial dilutions of the test substance.