Astaxanthin: past, present, and future

Y Nishida, PC Berg, B Shakersain, K Hecht… - Marine Drugs, 2023 - mdpi.com
Astaxanthin (AX), a lipid-soluble pigment belonging to the xanthophyll carotenoids family,
has recently garnered significant attention due to its unique physical properties, biochemical …

Challenges facing an understanding of the nature of low-energy excited states in photosynthesis

JR Reimers, M Biczysko, D Bruce, DF Coker… - … et Biophysica Acta (BBA …, 2016 - Elsevier
While the majority of the photochemical states and pathways related to the biological
capture of solar energy are now well understood and provide paradigms for artificial device …

High-yield singlet fission in a zeaxanthin aggregate observed by picosecond resonance Raman spectroscopy

C Wang, MJ Tauber - Journal of the American Chemical Society, 2010 - ACS Publications
We report high-yield triplet generation by singlet fission upon photoexcitation of a new
aggregate of the carotenoid all-trans 3 R, 3′ R-zeaxanthin. The yield is determined by …

Highly stabilized β-carotene in carbon nanotubes

K Yanagi, Y Miyata, H Kataura - Advanced Materials, 2006 - hero.epa.gov
The encapsulation and stability of beta-Carotene in single-walled carbon nanotubes
(SWCNT) were investigated. Three types of SWCNTs were prepared by laser vaporization of …

Singlet excited states and the light‐harvesting function of carotenoids in bacterial photosynthesis

Y Koyama, M Kuki, PO Andersson… - Photochemistry and …, 1996 - Wiley Online Library
The recent results of stationary‐state and time‐resolved absorption, fluorescence and
Raman spectroscopies of some typical carotenoids are summarized. Theoretical analyses of …

Cis− trans isomerizations of β-carotene and lycopene: A theoretical study

WH Guo, CY Tu, CH Hu - The Journal of Physical Chemistry B, 2008 - ACS Publications
The all-trans to mono-cis isomerizations of polyenes and two C40H56 carotenes, β-carotene
and lycopene, at the ground singlet (S0) and triplet (T1) states are studied by means of …

Triplet-sensitized and thermal isomerization of all-trans, 7-cis, 9-cis, 13-cis and 15-cis isomers of. beta.-carotene: configurational dependence of the quantum yield of …

M Kuki, Y Koyama, H Nagae - The Journal of Physical Chemistry, 1991 - ACS Publications
Carotenoids (Car) in photosynthetic systems have dual functions of photoprotection and light-
harvesting, 1 2" 3 45678910and natural selection of carotenoid configurations, in relation to …

[PDF][PDF] Triplet excitons of carotenoids formed by singlet fission in a membrane

C Wang, DE Schlamadinger, V Desai… - …, 2011 - researchgate.net
Singlet fission is a spin-allowed process whereby a singlet excited state forms a pair of triplet
excitons. The potential advantage of singlet fission for photovoltaics has stimulated a revival …

Biochemical and biophysical characterization of photosystem I from phytoene desaturase and ζ-carotene desaturase deletion mutants of Synechocystis sp. PCC 6803 …

JA Bautista, F Rappaport, M Guergova-Kuras… - Journal of Biological …, 2005 - ASBMB
In photosystem I, oxidation of reduced acceptor A 1–through iron-sulfur cluster FX is
biphasic with half-times of∼ 5–30 ns (" fast" phase) and∼ 150–300 ns (" slow" phase) …

Molecular adaptation of photoprotection: triplet states in light-harvesting proteins

A Gall, R Berera, MTA Alexandre, AA Pascal… - Biophysical journal, 2011 - cell.com
The photosynthetic light-harvesting systems of purple bacteria and plants both utilize
specific carotenoids as quenchers of the harmful (bacterio) chlorophyll triplet states via triplet …