FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4236025615> ?p ?o ?g. }

• W4236025615 endingPage "182" @default.
• W4236025615 startingPage "171" @default.
• W4236025615 abstract "The antioxidant activities, k inh , of catechol, 1, 4-tert-butylcatechol, 2, and 3,5-di-tert-butylcatechol (DTBC), 3, determined by the inhibited oxygen-uptake method during peroxidation of styrene initiated by AIBN are 55.0 x 10 4 , 88.4 x 10 4 , and 149 x 10 4 M -1 s -1 , respectively, and the stoichiometric factors (n) were 2.1-2.3. A decrease by 50-fold in k inh for 3 and a drop of 1.1-1.4 in n observed during inhibited peroxidation of methyl linoleate in aqueous sodium dodecyl sulfate (SDS) initiated by di-tert-butylhyponitrile (DBHN) is attributed to hydrogen bonding by water on the antioxidant and on the intermediate di-tert-butylsemiquinone radical, 5, formed in the inhibition step. Combinations of ascorbyl palmitate with 3 exhibited cooperative (not synergistic) antioxidant effects during inhibited peroxidation of styrene in solution. Combinations of ascorbic acid with 3 exhibited synergistic effects during inhibited peroxidation of methyl linoleate initiated by DBHN in SDS micelles. A profile of the effect of concentration of ascorbate on this synergism indicates a mole of 3 is regenerated per mole of ascorbate. The thiols, homocysteine, and polyethylene glycol thiol (polythiol) also exhibited synergistic effects with DTBC in this inhibition. Either ascorbate or polythiol rapidly reduces di-tert-butyl-ortho-quinone (DTBQ), 4, to 3 in methanol or in SDS micelles, and the combination of 3 + ascorbate acted as an efficient inhibitor in this medium. The esr studies indicate the semiquinone radical, 5, produced photochemically from 3 or spontaneously from 3 + 4 in solution, to be very persistent at room temperature. A pathway, mediated by 5, is proposed to account for the cooperative and synergistic effects observed and for the additional combination effect discovered when the three inhibitors: 3, ascorbate, and a thiol are used in the SDS medium. Combinations of such antioxidants are expected to be useful for inhibition of yellowing of pulps and paper with high lignin content, and to be significant in the in vivo reductions of ortho-quinones and semiquinone radicals formed during oxidations of various biomolecules.Key words: catechols, ascorbate, thiols, radicals, antioxidants." @default.
• W4236025615 created "2022-05-12" @default.
• W4236025615 creator A5046187733 @default.
• W4236025615 creator A5089357212 @default.
• W4236025615 date "1998-02-01" @default.
• W4236025615 modified "2023-09-26" @default.
• W4236025615 title "Article" @default.
• W4236025615 cites W1851468133 @default.
• W4236025615 cites W1966351239 @default.
• W4236025615 cites W1969167841 @default.
• W4236025615 cites W1970641466 @default.
• W4236025615 cites W1980927781 @default.
• W4236025615 cites W1982553378 @default.
• W4236025615 cites W1982953506 @default.
• W4236025615 cites W1985020078 @default.
• W4236025615 cites W1993867714 @default.
• W4236025615 cites W2000189967 @default.
• W4236025615 cites W2002828480 @default.
• W4236025615 cites W2002882158 @default.
• W4236025615 cites W2002972178 @default.
• W4236025615 cites W2006370393 @default.
• W4236025615 cites W2006608921 @default.
• W4236025615 cites W2007190406 @default.
• W4236025615 cites W2007663048 @default.
• W4236025615 cites W2008836533 @default.
• W4236025615 cites W2016995204 @default.
• W4236025615 cites W2024754142 @default.
• W4236025615 cites W2029664522 @default.
• W4236025615 cites W2035635392 @default.
• W4236025615 cites W2042337363 @default.
• W4236025615 cites W2042360558 @default.
• W4236025615 cites W2046098819 @default.
• W4236025615 cites W2047610618 @default.
• W4236025615 cites W2059639003 @default.
• W4236025615 cites W2072977341 @default.
• W4236025615 cites W2072979929 @default.
• W4236025615 cites W2074080854 @default.
• W4236025615 cites W2074128319 @default.
• W4236025615 cites W2077333390 @default.
• W4236025615 cites W2080385677 @default.
• W4236025615 cites W2083137559 @default.
• W4236025615 cites W2094355815 @default.
• W4236025615 cites W2094801957 @default.
• W4236025615 cites W2121232830 @default.
• W4236025615 cites W2125827719 @default.
• W4236025615 cites W2140446646 @default.
• W4236025615 cites W2164826175 @default.
• W4236025615 cites W2202206639 @default.
• W4236025615 cites W2325974599 @default.
• W4236025615 cites W2331826528 @default.
• W4236025615 cites W2949400904 @default.
• W4236025615 cites W2949568463 @default.
• W4236025615 cites W2950595416 @default.
• W4236025615 doi "https://doi.org/10.1139/v97-221" @default.
• W4236025615 hasPublicationYear "1998" @default.
• W4236025615 type Work @default.
• W4236025615 citedByCount "1" @default.
• W4236025615 countsByYear W42360256152018 @default.
• W4236025615 crossrefType "journal-article" @default.
• W4236025615 hasAuthorship W4236025615A5046187733 @default.
• W4236025615 hasAuthorship W4236025615A5089357212 @default.
• W4236025615 hasConcept C11268172 @default.
• W4236025615 hasConcept C13965031 @default.
• W4236025615 hasConcept C155647269 @default.
• W4236025615 hasConcept C161790260 @default.
• W4236025615 hasConcept C178790620 @default.
• W4236025615 hasConcept C184651966 @default.
• W4236025615 hasConcept C185592680 @default.
• W4236025615 hasConcept C2776778087 @default.
• W4236025615 hasConcept C2777713698 @default.
• W4236025615 hasConcept C2778004101 @default.
• W4236025615 hasConcept C2778113725 @default.
• W4236025615 hasConcept C2780247646 @default.
• W4236025615 hasConcept C2780829032 @default.
• W4236025615 hasConcept C2986274086 @default.
• W4236025615 hasConcept C31903555 @default.
• W4236025615 hasConcept C533411734 @default.
• W4236025615 hasConceptScore W4236025615C11268172 @default.
• W4236025615 hasConceptScore W4236025615C13965031 @default.
• W4236025615 hasConceptScore W4236025615C155647269 @default.
• W4236025615 hasConceptScore W4236025615C161790260 @default.
• W4236025615 hasConceptScore W4236025615C178790620 @default.
• W4236025615 hasConceptScore W4236025615C184651966 @default.
• W4236025615 hasConceptScore W4236025615C185592680 @default.
• W4236025615 hasConceptScore W4236025615C2776778087 @default.
• W4236025615 hasConceptScore W4236025615C2777713698 @default.
• W4236025615 hasConceptScore W4236025615C2778004101 @default.
• W4236025615 hasConceptScore W4236025615C2778113725 @default.
• W4236025615 hasConceptScore W4236025615C2780247646 @default.
• W4236025615 hasConceptScore W4236025615C2780829032 @default.
• W4236025615 hasConceptScore W4236025615C2986274086 @default.
• W4236025615 hasConceptScore W4236025615C31903555 @default.
• W4236025615 hasConceptScore W4236025615C533411734 @default.
• W4236025615 hasIssue "2" @default.
• W4236025615 hasLocation W42360256151 @default.
• W4236025615 hasOpenAccess W4236025615 @default.
• W4236025615 hasPrimaryLocation W42360256151 @default.
• W4236025615 hasRelatedWork W16447611 @default.

• next