Results 171 to 180 of about 2,263 (213)

Preparation of Divergent Intermediates and Convergent Synthesis of Phytofluene

Synthesis, 2023
AbstractPractical synthetic methods for biogenetically and pharmaceutically important phytofluene were developed through the divergent preparation of key C20 substrates from a common intermediate and convergent synthesis by Wittig and Julia–Kocienski olefinations.
Chanyoung Boo, Hye‐In Kim, Sangho Koo, Huijeong Yang, Seunghyo Han, Huisu Yeo, Chibeom Seo   +6 more
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ζ-Carotene: Generation and Quenching of Singlet Oxygen, Comparison with Phytofluene

Biochemistry (Moscow), 2022
It is known that C40 carotenoids with a short chain of conjugated double bonds (CDB) (5 and 7, respectively) are universal precursors in the biosynthesis of colored carotenoids in plant cells. Previously, using mainly stationary measurements of photosensitized phosphorescence of singlet oxygen (1O2), we discovered that phytofluene efficiently generates
Aleksandr A, Ashikhmin, Anton S, Benditkis, Andrey A, Moskalenko, Alexander A, Krasnovsky   +3 more
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Stepwise Dehydrogenation of the Colorless Polyenes Phytoene and Phytofluene with N-Bromosuccinimide to Carotenoid Pigments

Journal of the American Chemical Society, 1954
L. Ƶechmeister, B. Kenneth Koe
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Phytofluene as a Highly Efficient UVA Photosensitizer of Singlet Oxygen Generation

Biochemistry (Moscow), 2020
Phytoene and phytofluene - uncolored C40 carotenoids with short chain of conjugated double bonds (3 and 5, respectively) - are known to be universal precursors in biosynthesis of colored carotenoids in photosynthesizing organisms. It is commonly recognized that C40 carotenoids are photoprotectors of cells and tissues.
A A, Ashikhmin, A S, Benditkis, A A, Moskalenko, A A, Krasnovsky   +3 more
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Impact of onions in tomato-based sauces on isomerization and bioaccessibility of colorless carotenes: phytoene and phytofluene

Food & Function, 2020
The addition of onions into tomato purees favored E/Z-isomerization of PT and PTF during heating tomato-based sauces.
Jiahao Yu, Béatrice Gleize, Lianfu Zhang, Catherine Caris‐Veyrat, Catherine M.G.C. Renard   +4 more
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The enzymatic conversion of cis-[14C]phytofluene, trans-[14C]phytofluene, and trans-ζ-[14C]carotene to poly-cis-acyclic carotenes by a cell-free preparation of tangerine tomato fruit plastids

Archives of Biochemistry and Biophysics, 1974
Abstract The conversion of cis -[ 14 C]phytofluene to trans -[ 14 C]phytofluene and the conversion of the latter to trans -ζ-[ 14 C]carotene by a soluble enzyme system obtained from plastids of tangerine tomato fruits is reported. Each of these compounds is also converted to cis -ζ-carotene, proneurosporene, prolycopene, neurosporene, lycopene ...
Asaf A. Qureshi, Manok Kim, Nilofer Qureshi, John W. Porter   +3 more
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The Occurrenee of β-Carotene and "Phytofluene" in the Wood of Acacia acuminata

Australian Journal of Scientific Research Series A: Physical Sciences, 1949
The separation from extracts of Acacia acuminata, by chromatographic procedures, of β-carotene and a colourless fluorescent oil of similar adsorption properties is described. On the basis of its absorption spectrum and other properties the fluorescent oil is considered to be closely related to and possibly identical with the colourless carotenoid ...
Patriciz Stanley, VM Trikojus
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Bioavailability of the isomer mixture of phytoene and phytofluene-rich alga Dunaliella bardawil in rat plasma and tissues

The Journal of Nutritional Biochemistry, 2002
Dunaliella bardawil, a beta-carotene-accumulating alga was treated by the bleaching herbicide norflurazon to select sub-species rich with a mixture of 9-cis and all-trans stereoisomers of phytoene and phytofluene. The present study determines the bioavailability of phytoene and phytofluene with their stereoisomers in rats fed on a diet supplemented ...
Moshe J. Werman, Shoshana Mokady, Ami Ben‐Amotz   +2 more
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The enzymatic conversion of cis-[14C]phytofluene, trans-[14C]phytofluene, and trans-ζ-[14C]carotene to more unsaturated acyclic, monocyclic, and dicyclic carotenes by a cell-free preparation of red tomato fruits

Archives of Biochemistry and Biophysics, 1974
Abstract This paper reports the conversion of cis -[ 14 C]phytofluene to trans -[ 14 C|phytofluene and the conversion of the latter compound to trans -ζ-[ 14 C]carotene by a soluble enzyme system obtained from the plastids of red tomato fruits. Each of these radioactive compounds was also converted to labeled neurosporene, lycopenc, α-carotene ...
Asaf A. Qureshi, A. G. Andrewes, Nilofer Qureshi, John W. Porter   +3 more
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Preparation and spectral characteristics of all-trans-and a cis-phytofluene

Archives of Biochemistry and Biophysics, 1953
Abstract A method for the isolation of a cis - and all- trans -phytofluene is described, and some spectral data are given for these two compounds.
B K, KOE, L, ZECHMEISTER
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