Results 251 to 260 of about 1,107,574 (309)

Cyclodextrin inclusion complex formation and solid-state characterization of the natural antioxidants alpha-tocopherol and quercetin.

Journal of Agricultural and Food Chemistry, 2009
Cyclodextrin (CD) complexation procedures are relatively simple processes, but these techniques often require very specific conditions for each individual guest molecule.
J. Koontz, J. Marcy, S. O'keefe, S. Duncan   +3 more
semanticscholar   +1 more source

THE EFFECT OF ALPHA-TOCOPHEROL ADMINISTRATION ON PREGNANEDIOL EXCRETION

Obstetrical & Gynecological Survey, 1949
VITAMIN E (alpha-tocopherol) has been widely used clinically in the treatment of disorders of reproduction since shortly after its discovery by Evans and Bishop (1) in 1922. It has been clearly demonstrated by animal experimentation that a vitamin E deficiency is associated with sterility in the male and resorption of embryos in the female rat.
Eleanor Delfs, G. E. Seegar Jones, H. M. Stran   +2 more
openaire   +3 more sources

Palm tocotrienol exerted better antioxidant activities in bone than alpha-tocopherol.

Basic & Clinical Pharmacology & Toxicology, 2008
The aim of this study was to investigate the effects of vitamin E on the levels of lipid peroxidation and antioxidant enzymes in rat bones. Fifty-six normal male Sprague-Dawley rats, aged 3 months, were randomly divided into seven groups with eight rats ...
S. Maniam, Norazlina Mohamed, A. Shuid, I. Soelaiman   +3 more
semanticscholar   +1 more source

Combining the dynamic TNO-gastrointestinal tract system with a Caco-2 cell culture model: application to the assessment of lycopene and alpha-tocopherol bioavailability from a whole food.

Journal of Agricultural and Food Chemistry, 2009
To exert their health effect, phytochemicals such as carotenoids and vitamin E have to be bioavailable. We investigated the digestive stability and intestinal absorption of lycopene and alpha-tocopherol from a whole food containing red tomatoes and ...
Emmanuelle Déat, S. Blanquet-Diot, J. Jarrige, S. Denis, E. Beyssac, M. Alric   +5 more
semanticscholar   +1 more source

Validation of a dietary questionnaire with plasma carotenoid and alpha-tocopherol levels.

American Journal of Clinical Nutrition, 1983
We assessed the validity of a self-administered semiquantitative food frequency questionnaire by comparing carotene and vitamin E intake scores derived from form with plasma carotenoid and alpha-tocopherol levels among a group of 59 men and women.
Walter C. Willett, M. Stampfer, Barbara A. Underwood, F. Speizer, B. Rosner, Hennekens Ch   +5 more
semanticscholar   +1 more source

Asymmetric synthesis of alpha-tocopherol.

Chemistry (Weinheim an der Bergstrasse, Germany), 2010
Alpha-tocopherol was synthesized from a chiral intermediate alpha-hydroxy ester by means of two ring-closing methods to yield the chromanol in 94% diastereomeric excess.
Hengartner, Urs, Chougnet, Antoinette, Liu, Kegang, Woggon, Wolf-D.   +3 more
openaire   +1 more source

Trial of d-alpha-tocopherol in Huntington's disease

American Journal of Psychiatry, 1995
Evidence suggests that the neuropathology of Huntington's disease, a neuropsychiatric disorder due to a mutation on chromosome 4, results from excessive activation of glutamate-gated ion channels, which kills neurons by oxidative stress. Therefore, the authors hypothesized that alpha-tocopherol, which reduces oxyradical damage to cell membranes, might ...
Fred Bylsma, Joseph R. Cockrell, Joseph T. Coyle, Joseph T. Coyle, Paul R. McHugh, Jason Brandt, Susan E. Folstein, S. E. Starkstein, Marshal F. Folstein, Gary A. Chase, Carol Efron Peyser   +10 more
openaire   +2 more sources

Concurrent liquid-chromatographic assay of retinol, alpha-tocopherol, beta-carotene, alpha-carotene, lycopene, and beta-cryptoxanthin in plasma, with tocopherol acetate as internal standard.

Clinical Chemistry, 1988
A method is described for simultaneously determining retinol, alpha-tocopherol, beta-carotene, alpha-carotene, lycopene, and beta-cryptoxanthin in 0.25 mL of plasma.
D. Thurnham, E. Smith, P. Flora
semanticscholar   +1 more source

Liposomes with alpha-tocopherol membrane

1996
Liposomes, closed spherical structures formed by phospholipid bilayers, have been recognized as a controlled drug delivery system. We have studied the preparation and biocompatibility of liposomes based on soya phospholipids encapsulated with alpha-tocopherol. The binding efficiency of alpha-tocopherol was analysed by comparing two methods for liposome
Mojović, L, Šiler-Marinković, Slavica, Bugarski, Diana, Jovčić, Gordana, Petakov, Marijana, Bugarski, Branko   +5 more
openaire   +1 more source

Inhibition of human platelet cyclooxygenase by alpha-tocopherol

Prostaglandins and Medicine, 1980
Alpha-tocopherol, an inhibitor of platelet aggregation, was evaluated for its effects on the synthesis of thromboxane and prostaglandins. A dose-dependent reduction in thromboxane B2 and prostaglandin D2 synthesis was observed with approximately 60% inhibition at 5.0 IU or alpha-tocopherol.
Muslim Ali, John W.D. McDonald, C.Gary Gudbranson   +2 more
openaire   +3 more sources