Antioxidant Activity of β-Carotene Compounds in Different in Vitro Assays

L Muller, V Bohm - Molecules, 2011 - mdpi.com
β-Carotene (BC) is the most abundant carotenoid in human diet, almost solely as (all-E)-
isomer. Significant amounts of (Z)-isomers of BC are present in processed food as well as in …

DFT study of Raman spectra of polyenes and ß-carotene: Dependence on length of polyene chain and isomer type

VS Novikov, VV Kuzmin, SM Kuznetsov… - … Acta Part A: Molecular …, 2021 - Elsevier
We carried out calculations of non-resonance Raman spectra of ß-carotene and polyenes
CH 2 double bond (CHsingle bondCHdouble bond) n-2 CHdouble bondCH 2 using the …

Thermal‐ and Photo‐Induced Isomerization of All‐E‐ and Z‐Isomer‐Rich Xanthophylls: Astaxanthin and Its Structurally‐Related Xanthophylls, Adonirubin, and …

M Honda, T Sowa, Y Kawashima - European Journal of Lipid …, 2020 - Wiley Online Library
The effects of heating and photo‐irradiation on the stability of all‐E‐isomer‐rich and Z‐
isomer‐rich xanthophylls, astaxanthin and its structurally related xanthophylls, adonirubin …

Harmonic models in cartesian and internal coordinates to simulate the absorption spectra of carotenoids at finite temperatures

J Cerezo, J Zuniga, A Requena… - Journal of Chemical …, 2013 - ACS Publications
When large structural displacements take place between the ground state (GS) and excited
state (ES) minima of polyatomic molecules, the choice of a proper set of coordinates can be …

Investigations on the geometrical isomers of astaxanthin: Raman spectroscopy of conjugated polyene chain with electronic and mechanical confinement

B Subramanian, N Tchoukanova… - Journal of Raman …, 2014 - Wiley Online Library
Recent research interests in geometrical isomers of astaxanthin (AST) are motivated by their
metabolic activities in aquatic animals and human. It has been established that cis‐isomers …

Following coupled electronic-nuclear motion through conical intersections in the ultrafast relaxation of β-Apo-8′-carotenal

TAA Oliver, GR Fleming - The Journal of Physical Chemistry B, 2015 - ACS Publications
Ultrafast transient electronic absorption, one-and two-dimensional electronic-vibrational
spectroscopies were used to study the nonradiative relaxation dynamics of β-apo-8 …

Electron donor–acceptor capacity of selected pharmaceuticals against COVID-19

A Martinez - Antioxidants, 2021 - mdpi.com
More than a year ago, the first case of infection by a new coronavirus was identified, which
subsequently produced a pandemic causing human deaths throughout the world. Much …

Detection of carbonate, phosphate minerals and cyanobacteria in rock from the Tomtor deposit, Russia, by Raman spectroscopy

TN Moroz, HGM Edwards, SM Zhmodik - Spectrochimica Acta Part A …, 2021 - Elsevier
Samples of rock from the Tomtor Nb-REE (rare-earth elements) deposit (Russia) have been
investigated by Raman micro-spectroscopy using visible 532 nm wavelength excitation …

Antioxidant properties of β-carotene isomers and their role in photosystems: insights from ab initio simulations

J Cerezo, J Zúñiga, A Bastida, A Requena… - The Journal of …, 2012 - ACS Publications
In this work we investigate the effect of cis isomerizations and conformational changes on
the antioxidant activity of β-carotene, one of the most important pigments in nature. The …

A theoretical study of the reaction of β-carotene with the nitrogen dioxide radical in solution

JP Cerón-Carrasco, A Bastida, A Requena… - The Journal of …, 2010 - ACS Publications
A theoretical study of the reaction of β-carotene (BC) with the nitrogen dioxide radical (NO2•)
in solution is carried out using the density functional theory (DFT) at the B3LYP/6-31G (d) …