L
Lowell D. Kispert
Researcher at University of Alabama
Publications - 243
Citations - 4893
Lowell D. Kispert is an academic researcher from University of Alabama. The author has contributed to research in topics: Electron paramagnetic resonance & Radical. The author has an hindex of 37, co-authored 241 publications receiving 4646 citations. Previous affiliations of Lowell D. Kispert include Valdosta State University & Argonne National Laboratory.
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Direct measurement of the lowest excited singlet state lifetime of all-trans-β-carotene and related carotenoids
TL;DR: In this paper, a 4 ps, 510 nm laser pulse was used to electronically excite toluene solutions of all-trans-β-carotene, canthaxanthin, and β-8'-apocarotenal.
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Single Two-Electron Transfers vs Successive One-Electron Transfers in Polyconjugated Systems Illustrated by the Electrochemical Oxidation and Reduction of Carotenoids
TL;DR: Examination of cyclic voltammetric responses reveals that inversion of the standard potentials of the first and second electron transfers occurs in the oxidation of beta-carotene and 15,15'-didehydro-beta- carotene as well as in the reduction of canthaxanthin.
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Carotenoids as scavengers of free radicals in a Fenton reaction: antioxidants or pro-oxidants?
TL;DR: The spin trapping EPR technique was used to study the influence of carotenoids on the yield of free radicals in the Fenton reaction in the organic solvents, DMSO, and methanol and it was demonstrated that carOTenoids could increase or decrease the total yield offree radicals depending on the oxidation potential of the carotanoids and the nature of the radicals.
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Carotenoid cation radicals: electrochemical, optical, and EPR study
TL;DR: In this paper, a detailed study of the electrooxidation of various carotenoids (..beta..-carotene (I),..beta,.-apo-8'-carotenal (II), and canthaxanthin (III) using the techniques of cyclic voltammetry, controlledpotential electrolysis (cpe), and EPR spectroscopy coupled with in situ electrolysis was conducted.
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Inclusion complexes of carotenoids with cyclodextrins: 1H NMR, EPR, and optical studies.
TL;DR: The data show that CD protects the carotenoid from reactive oxygen species, and complexation with CD results in considerable decrease in antioxidant ability of the carOTenoid.