Information om | Engelska ordet Β-CAROTENE

Exempel på hur man kan använda Β-CAROTENE i en mening

• The term "vitamin A" encompasses a group of chemically related organic compounds that includes retinol, retinyl esters, and several provitamin (precursor) carotenoids, most notably β-carotene (beta-carotene).
• Isolation of β-carotene from fruits abundant in carotenoids is commonly done using column chromatography.
• Vertebrate animals ingest retinal directly from meat, or they produce retinal from carotenoids — either from α-carotene or β-carotene — both of which are carotenes.
• Damiana contains damianin; tetraphyllin B; gonzalitosin I; arbutin; tricosan-2-one; acacetin; p-cymene; β-sitosterol; 1,8-cineole; apigenin; α-pinene; β-carotene; β-pinene; tannins; thymol; and hexacosanol.
• "Provitamin A" is a name for β-carotene, which has only about 1/6 the biological activity of retinol (vitamin A); the body uses an enzyme to convert β-carotene to retinol.
• Xanthophyte chloroplasts contain the photosynthetic pigments chlorophyll a, chlorophyll c, β-carotene, and the carotenoid diadinoxanthin.
• Common examples include retinal (used in the eye to detect light), various food colorings, fabric dyes (azo compounds), pH indicators, lycopene, β-carotene, and anthocyanins.
• Rutin is a prominent flavonoid, while the main carotenoid is zeaxanthin dipalmitate (49% of the carotenoid fraction), with β-carotene, two cerebrosides, and three pyrrole derivatives as other constituents.
• The chief β-carotene breakdown product suspected of this behavior is trans-beta-apo-8'-carotenal (common apocarotenal) , which has been found in one study to be mutagenic and genotoxic in cell cultures which do not respond to β-carotene itself.
• The Stille reaction has been used to make an antitumor agent, (±)-epi-jatrophone; the Suzuki reaction has been used to make an antitumor agent, oximidine II; the Sonogashira reaction has been used to make an anticancer drug, eniluracil; and the Negishi reaction has been used to make the carotenoid β-carotene via a transmetalation cascade.
• The total carotenoid content has been reported to be 15 - 61 mg/kg, with the main components in order of concentration being lutein, β-carotene, neoxanthin, luteoxanthin, and violaxanthin.
• Plants, in general, contain six ubiquitous carotenoids: neoxanthin, violaxanthin, antheraxanthin, zeaxanthin, lutein and β-carotene.
• 003-Gyr-old sample from the Barney Creek Formation underwent an extraction for γ-carotene and subsequent analysis with GC/MS such that there exists a peak at m/z 125 indicating the presence of carotenoid derivatives which elute immediately after β-carotene and γ-carotene.
• Perhaps more importantly, the fruit chloroplasts are remodelled during ripening into chlorophyll-free chromoplasts that synthesize and accumulate the carotenoids lycopene, β-carotene, and other metabolites that are sensory and nutritional assets of the ripe fruit.
• Eustigmatophytes contain one or more yellow-green chloroplasts, which contain chlorophyll a and the accessory pigments violaxanthin and β-carotene.
• Xanthophyllic carotenoids such as β-carotene, lutein, and zeaxanthin have often been touted for their ability to help eye functionality.
• Gloeobacter violaceus produces several pigments, including chlorophyll a, β-carotene, oscillol diglycoside, and echinenone.
• In particular, they are characterized by photosynthetic organelles or plastids enclosed by four membranes, with membrane-bound compartments called thylakoids organized in piles of three, chlorophyll a and c as their photosynthetic pigments, and additional pigments such as β-carotene and xanthophylls.
• Yellow-orange paprika colors derive primarily from α-carotene and β-carotene (provitamin A compounds), zeaxanthin, lutein and β-cryptoxanthin, whereas red colors derive from capsanthin and capsorubin.
• Using a CRISPR/Cas9-mediated loss of function mutant of gene nina B1, a gene that encodes the rate limiting enzyme that converts β-carotene into retinal, they demonstrated the necessity of this pathway for the photoperiodic induction of reproductive diapause.

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