Results 41 to 50 of about 9,567 (236)

The roles of specific xanthophylls in photoprotection [PDF]

Proceedings of the National Academy of Sciences, 1997
Xanthophyll pigments have critical structural and functional roles in the photosynthetic light-harvesting complexes of algae and vascular plants. Genetic dissection of xanthophyll metabolism in the green alga Chlamydomonas reinhardtii revealed functions for specific xanthophylls in the nonradiative dissipation of ...
K K, Niyogi, O, Björkman, A R, Grossman
openaire   +2 more sources

Effects of the Macular Carotenoid Lutein in Human Retinal Pigment Epithelial Cells

Antioxidants, 2017
Retinal pigment epithelial (RPE) cells are central to retinal health and homoeostasis. Oxidative stress-induced damage to the RPE occurs as part of the pathogenesis of age-related macular degeneration and neovascular retinopathies (e.g., retinopathy of ...
Xiaoming Gong, Christian S. Draper, Geoffrey S. Allison, Raju Marisiddaiah, Lewis P. Rubin   +4 more
doaj   +1 more source

Degradation Mechanisms, Encapsulation‐Based Stabilization, and Analytical Detection of Vitamin A

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Vitamin A is an important lipid‐soluble micronutrient essential for vision, immune function, and overall growth and development. However, vitamin A is unstable and susceptible to environmental factors because of its conjugated structure and inherent chemical reactivity.
Latheesha Abeywardana, Thambaramala V. Gamage, Tanoj K. Singh, Shuaifei Zhao, Amy Logan, Lingxue Kong   +5 more
wiley   +1 more source

Xanthophyll-cycle dynamics and rapid induction of anthocyanin synthesis in Eucalyptus nitens seedlings transferred to photoinhibitory conditions [PDF]

, 2005
The effects of rapid induction and subsequent relaxation of cold-induced photoinhibition on pigment chemistry of Eucalyptus nitens (Deane and Maiden) Maiden seedling leaves was assessed.
Christopher Beadle (14731372), Dugald Close (14733964)   +1 more
core  

The moss Bryum argenteum var. muticum Brid. is well adapted to cope with high light in continental Antarctica [PDF]

, 2012
The net photosynthetic rate (NP), chlorophyll fluorescence, carotenoid content and chlorophyll content of the cosmopolitan moss Bryum argenteum were measured in the field at Botany Bay, southern Victoria Land, continental Antarctica (77°S).
M. Schlensog, Green, T.G. Allan, Schlensog, Mark, Sancho, Leopoldo G., T. G. A. Green, Kulle, Daniel, Daniel Kulle, Pannewitz, Stefan, S. Pannewitz, Schroeter, Burkhard, L. G. Sancho, B. Schroeter   +11 more
core   +1 more source

Chromaticity of Gromwell, Cape jasmine Dyeing, and Effects of Zinc Oxide/Polyphenol Treatment with Copper Mordanting for UV Protection

Colorants
To protect skin from harmful ultraviolet (UV) radiation, there has been a resurgence in the use of natural dyes with metal mordants to reduce contamination by advanced chemicals.
Hye Jin Kim
doaj   +1 more source

Soaking Water Management Strategies for Enhanced Quality of Parboiled Rice

Cereal Chemistry, EarlyView.
ABSTRACT Background and Objectives Parboiling is a hydrothermal process that alters rice physicochemical and nutritional properties. The soaking step is crucial, influencing off‐flavor formation, mineral retention, and effluent quality. This study evaluated five soaking water (SW) management strategies combining different frequencies and volumes of SW ...
Eliane Lemke Figueiredo, Paulo Alberto Azevedo, Nataniele Barros Schaun, Ya‐Jane Wang, Rosana Colussi, Nathan Levien Vanier, Moacir Cardoso Elias   +6 more
wiley   +1 more source

Study of factors controlling the photoprotection capacity of the thylakoid membrane [PDF]

, 2010
PhDPlants require light for the process of photosynthesis, but excess of light absorption can cause photooxidative damage. To avoid this damage, plants have evolved a photoprotective mechanism to dissipate excess light energy as heat in a process ...
Zia, Ahmad
core  

Carotenoid composition in Rhodophyta: Insights into xanthophyll regulation in Corallina elongata [PDF]

, 2008
Macroalgae possess several photoprotection mechanisms, including xanthophyll cycles. Among these cycles, the VAZ (violaxanthin–anteraxanthin–zeaxanthin) cycle controls the interconversion of epoxidated xanthophyll (V) to de-epoxidated forms anteraxanthin
Esteban Terradillos, Raquel, Martínez, Brezo, Becerril Soto, José María, García Plazaola, José Ignacio, Fernández Marín, Beatriz   +4 more
core   +1 more source

Optimising the Eco‐Friendly Extraction of Carotenoids From Gac Fruit: A Sustainable Solution for Natural Red Food Colourants

Food Chemistry International, EarlyView.
Gac fruit's high carotenoid content, especially in the aril, makes it an excellent natural red pigment source for food applications, offering a safer alternative to synthetic dyes. Ethanol extraction achieved the highest overall pigment recovery (89.53%), whereas ethyl lactate extraction yielded the highest levels of total carotenoids, β‐carotene ...
N. Netravati, S. Gomez, B. Pathrose, A. Suma, J. Hosamani   +4 more
wiley   +1 more source