نتایج جستجو برای: carotenoid content
تعداد نتایج: 419841 فیلتر نتایج به سال:
background & aim: marigold or calendula officinalis l. is a annual herb belongs to the asteraceae family. marigold is a valuable medicinal plant which is used in pharmaceutical industry. in addition, this plant is cultivated as an ornamental plant. aim of current study was to evaluate the effect of different concentrations of jasmonic acid (ja), and salicylic acid (sa) on phytochemical pr...
We have used resonant Raman scattering spectroscopy as a novel, noninvasive, in vivo optical technique to measure the concentration of the macular carotenoid pigments lutein and zeaxanthin in the living human retina of young and elderly adults. Using a backscattering geometry and resonant molecular excitation in the visible wavelength range, we measure the Raman signals originating from the sin...
Photosynthesis in some phototrophic bacteria requires the PufX component of the reaction centre-light-harvesting 1-PufX (RC-LH1-PufX) complex, which creates a pore for quinone/quinol (Q/QH2 ) exchange across the LH1 barrier surrounding the RC. However, photosynthetic bacteria such as Thermochromatium (T.) tepidum do not require PufX because there are fewer carotenoid binding sites, which create...
Ixeris dentata var. albiflora is considered as a potential therapeutic agent against mithridatism, calculous, indigestion, pneumonia, hepatitis, and tumors as well as good seasoned vegetable in Far East countries. Phytoene synthase (PSY), phytoene desaturase (PDS) ξ-carotene desaturase (ZDS), lycopene β-cyclase (LCYB), lycopene ε-cyclase (LCYE), ε-ring carotene hydroxylase (CHXB), and zeaxanthi...
Commonly recommended plant sources of provitamin A, such as dark green leafy vegetables, are not acceptable in many population groups. The objective of this study was to identify other indigenous foods that may be effectively promoted to alleviate vitamin A deficiency (VAD) and to gather information relevant to identification, production, acquisition, and consumption of foods relevant to a food...
During the transformation of chloroplasts to chromoplasts in Capsicum annuum L., the permeability of the envelope membranes to possible precursors of carotenoid biosynthesis (acetate, mevalonate, citrate) was tested. The plastids were isolated by gel filtration, and the uptake of labeled compounds was measured by a filtering centrifugation technique, using silicone oil. The different ripening s...
1. The effect of visible light on respiratory activity was studied in two strains of Neurospora crassa, one a wild-type strain able to synthesize carotenoid and the other an albino mutant lacking carotenogenic activity. Light had no effect on growth under the conditions studied, but inhibited respiration of hyphal suspensions, the degree of inhibition being dependent on the carotenoid content o...
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