Algal carotenoids . Part 64 . 1 Structure and chemistry of 4 - keto - 19 - hexanoyloxyfucoxanthin with a novel carotenoid end group
نویسندگان
چکیده
a Organic Chemistry Laboratories, Department of Chemistry, Norwegian University of Science and Technology, Gløshaugen, NO-7491 Trondheim, Norway b Instituto de Investigacións Mariñas, C.S.I.C., Av. Eduardo Cabello 6, ES-36208 Vigo, Spain c Centro de Investigacións Mariñas, Consellería de Pesca-Xunta de Galicia, Apdo. 13, ES-36620 Vilanova de Arousa, Spain d Servicios Xerais de Apoio á Investigación, Universidade da Coruña, Campus da Zapateira, ES-15071 A Coruña, Spain
منابع مشابه
Carotenoids and carotenoid esters of orange- and yellow-fleshed mamey sapote (Pouteria sapota (Jacq.) H.E. Moore & Stearn) fruit and their post-prandial absorption in humans.
Although different genotypes of mamey sapote with distinct pulp colors are consumed in countries from Central to South America, in-depth knowledge on genotype-related differences of their carotenoid profile is lacking. Since the fruit was found to contain the potentially vitamin A-active keto-carotenoids sapotexanthin and cryptocapsin, we sought to qualitatively and quantitatively describe the ...
متن کاملElucidation of the biosynthetic pathway for Okenone in Thiodictyon sp. CAD16 leads to the discovery of two novel carotene ketolases.
Okenone is a unique ketocarotenoid found in many purple sulfur bacteria; it is important because of its unique light absorption and photoprotection properties. Okenane, a compound formed by diagenetic reduction of okenone, is an important biomarker in geochemical analyses of sedimentary rocks. Despite its ecological and biogeochemical importance, the biochemical pathway for okenone synthesis ha...
متن کاملCarotenoid blues: Structural studies on carotenoproteins
a-Crustacyanin, the 320 kDa astaxanthin-protein from the carapace of the lobster, Homarus gammarus, is the best known of the blue-purple carotenoproteins found in marine invertebrate animals. Reconstituted a-crustacyanin complexes have been prepared from a range of natural and synthetic carotenoids. Only normal C ~ O carotenoids in the all-E configuration fit into the binding site, though some ...
متن کاملCarotenoid β-Ring Hydroxylase and Ketolase from Marine Bacteria—Promiscuous Enzymes for Synthesizing Functional Xanthophylls
Marine bacteria belonging to genera Paracoccus and Brevundimonas of the α-Proteobacteria class can produce C₄₀-type dicyclic carotenoids containing two β-end groups (β rings) that are modified with keto and hydroxyl groups. These bacteria produce astaxanthin, adonixanthin, and their derivatives, which are ketolated by carotenoid β-ring 4(4')-ketolase (4(4')-oxygenase; CrtW) and hydroxylated by ...
متن کاملNuclear magnetic resonance analysis of carotenoids from the burgundy plumage of the Pompadour Cotinga (Xipholena punicea).
Previous analysis of carotenoids extracted from the burgundy plumage of the Pompadour Cotinga (Xipholena punicea) revealed six novel keto-carotenoid pigments with methoxyl groups in the C3-position of one or both β-rings. High performance liquid chromatography (HPLC), mass spectrometry, chemical analysis and, in some instances (1)H NMR spectroscopy were employed to determine the structures of t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000