Results 171 to 180 of about 4,934 (225)

Relative autoxidative and photolytic stabilities of tocols and tocotrienols

Lipids, 1976
AbstractThe relative stabilities of selected individual tocols and tocotrienols and of equimolar mixtures of either α‐ plus γ‐ or α‐ plus δ‐ tocopherols were determined in methyl myristate and methyl linoleate during autoxidation and photolysis. Solutions containing 0.05% of the appropriate tocopherol(s) or tocotrienols were subjected to UV light (254 ...
J, Lehmann, H T, Slover
openaire   +2 more sources

Impact of chitosan-based oleogels crosslinked with vanillin containing different oil phases on lipid digestion and bioaccessibility of carotenoids and tocols.

Food Chemistry
This study aimed to investigate the influence of chitosan concentration (0.42 % and 1.0 % w/v) and oil phase type (soybean oil, dendê oil, annatto seed oil, and blends of soybean oil + dendê oil and soybean oil + annatto seed oil) on the physicochemical ...
Jorge da Silva Pinho-Jr, Bruno Saud Moreira, G. B. Brito, Leticia Gonçalves de Almeida Torres, Débora Nascimento Eiriz, Alexandre Guedes Torres, Anderson Junger Teodoro, Daniel Perrone, V. Castelo‐Branco   +8 more
semanticscholar   +1 more source

Gamma-tocotrienol, a tocol antioxidant as a potent radioprotector

International Journal of Radiation Biology, 2009
To assess the radioprotective potential of gamma-tocotrienol.To optimise its dose and time regimen, gamma-tocotrienol (GT3) was injected subcutaneously (SC) at different doses into male CD2F1 mice [LD(50/30) (lethal radiation dose that results in the mortality of 50% mice in 30 days) radiation dose of 8.6 Gy with vehicle].
Sanchita P, Ghosh, Shilpa, Kulkarni, Kevin, Hieber, Raymond, Toles, Lyudmila, Romanyukha, Tzu-Cheg, Kao, Martin, Hauer-Jensen, K Sree, Kumar   +7 more
openaire   +2 more sources

Optimization of tocol emulsions for the intravenous delivery of clarithromycin

International Journal of Pharmaceutics, 2008
In the present study, novel less-painful tocol emulsions for the intravenous delivery of clarithromycin were prepared and optimized. The therapeutically effective concentration of clarithromycin, 5mg/ml, was achieved using tocopherol succinate (TS) combined with oleic acid as lipophilic counterions.
Jie, Li, Shufang, Nie, Xingang, Yang, Changguang, Wang, Shuxia, Cui, Weisan, Pan   +5 more
openaire   +2 more sources

Simultaneous determination of tocols, γ-oryzanols, phytosterols, squalene, cholecalciferol and phylloquinone in rice bran and vegetable oil samples.

Food Chemistry, 2019
In this study, a simultaneous analytical method of tocols, γ-oryzanols, phytosterols, squalene, cholecalciferol and phylloquinone were developed using HPLC-DAD-FLD. The developed method allowed the quantification of 18 compounds in 30 min.
Piramon Pokkanta, Phumon Sookwong, Manatchanok Tanang, Saranya Setchaiyan, Pittayaporn Boontakham, Sugunya Mahatheeranont   +5 more
semanticscholar   +1 more source

Vitamin E and related tocols in Cancer: Unraveling the Paradox of Antioxidant and Pro-Oxidant Roles.

Journal of Nutritional Biochemistry
Vitamin E, strictly defined as α-tocopherol, exhibits a complex dual role in cancer pathogenesis through its context-dependent pro-oxidant and antioxidant activities.
Fen Xiao, Zhibin Wang, Nayiyuan Wu, Xiu Zhang, Xing Yu, Zuo-Mei He, Jing Wang   +6 more
semanticscholar   +1 more source

Chromatographic analysis of tocol-derived lipid antioxidants

Journal of Chromatography A, 2000
This paper provides a comprehensive overview of existing chromatographic methods for the analysis of tocol-derived lipid antioxidants in various sample matrices. After a brief introductory discussion on biological and nutritional aspects of the vitamin E active compounds, the review focuses on various techniques for the isolation, purification ...
openaire   +2 more sources

Oxidation of Corn Oils with Spiked Tocols

Journal of the American Oil Chemists' Society, 2011
AbstractStripped corn oils with added tocopherols and tocotrienols, at concentrations between 100 and 5,000 ppm, were used to evaluate antioxidant activity of these tocol compounds. The formation of lipid hydroperoxides, measured as peroxide value (PV), was accelerated at 60 °C in the dark for 5 days.
David Dolde, Tong Wang
openaire   +1 more source

Tocols and oil content in whole grain, brewer's spent grain, and pearling fractions of malting, feed, and food barley genotypes

Cereal Chemistry, 2018
Ana Badea, Marta Izydorczyk
exaly   +2 more sources

Fractionation of sterols, tocols and squalene in flaxseed oils under the impact of variable conditions of supercritical CO2 extraction

Journal of Food Composition and Analysis, 2019
This study analysed the impact of selected adjustable parameters in the SFE such as SC−CO2 flow rate (6–12 mL/min), temperature (40–80 °C) and extraction time (2–6 h) on the oil recovery and content and composition of tocols, sterols and squalene in ...
G. Dąbrowski, S. Czaplicki, I. Konopka
semanticscholar   +1 more source