Natural pigments extracted from plants are raised as a vital substitute to artificial dyes. The present study was conducted extract pigment Bistorta amplexicaule and evaluate its dyeing property, antimicrobial activity toxicity. extraction done by maceration sonication methods with 7.5% 5% yield, respectively. appeared bright- amber colored which used for fabrics food using traditional m...

PURPOSE Research shows wide variation in macular pigment density between individuals. As are other ocular pigments, this variation may be genetic. To test this hypothesis, the authors measured macular pigment density, serum carotenoid concentrations, and general dietary patterns in 10 pairs of identical twins. METHODS Macular pigment was measured psychophysically by a 1 degree test stimulus. ...

Australasian Journal of DermatologyVolume 64, Issue S1 p. 106-109 ABSTRACT Pigment Disorders First published: 22 May 2023 https://doi.org/10.1111/ajd.14049Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare text full-text accessPlease review our Terms and Conditions Use check box below share version article.I have read acce...

The regulation of light harvesting in higher plant photosynthesis, defined as stress-dependent modulation of the ratio of energy transfer to the reaction centers versus heat dissipation, was studied by means of carotenoid biosynthesis mutants and recombinant light harvesting complexes (LHCs) with modified chromophore binding. The npq2 mutant of Arabidopsis thaliana, blocked in the biosynthesis ...

Muscarinic receptors are the predominant cholinergic receptors in the central and peripheral nervous systems. Recently, activation of muscarinic receptors was found to elicit pigment granule dispersion in retinal pigment epithelium isolated from bluegill fish. Pigment granule movement in retinal pigment epithelium is a light-adaptive mechanism in fish. In the present study, we used pharmacologi...

Light absorbed in the far red limit of the absorption spectrum of green plants shows a poor yield of photosynthesis but is enhanced to much greater efficiency when it is supplemented by shorter wave length light1. These two colour effects were a first hint to suppose 20 years ago that the primary reaction of photosynthesis may perhaps be sensitized by two pigments, a long wavelength and a short...

Metals have a variety of negative outcomes on plants, essential components of any ecosystem. The effects of CdCl2 (5 μmol L-1), ZnCl2 (25 or 50 μmol L-1), and CuCl2 (2.5 or 5 μmol L-1) and combinations of CdCl2 with either ZnCl2 or CuCl2 on the growth, photosynthetic pigments, and photosystem II (PSII) efficiency of duckweed (Lemna minor L.) were investigated. All of the treatments caused growt...

Effects of temperature on the spectral properties of visual pigments were measured in the physiological range (5-28 degrees C) in photoreceptor cells of bullfrog (Rana catesbeiana) and crucian carp (Carassius carassius). Absorbance spectra recorded by microspectrophotometry (MSP) in single cells and sensitivity spectra recorded by electroretinography (ERG) across the isolated retina were combin...