Determination of alpha-Tocopherol Acetate in an Anti-Aging Cosmetic Cream by Gas Chromatography
نویسندگان
چکیده
منابع مشابه
Determination of the stereoisomers of racemic alpha-tocopherol in pharmaceutical preparations by high-performance liquid chromatography and gas chromatography.
In the present study we used chiral high performance liquid chromatography and gas chromatography to determine the stereoisomers of racemic alpha-tocopherol. The Chiralcel OD-H and Silar-100 AT columns were used. Statistical evaluation of the results established the precision of these methods.
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Submitters: George L. Catignani, Department of Food Science, North Carolina State University, Raleigh, NC 27650 John G. Bieri, Nutritional Biochemistry Section, Laboratory of Nutrition and Endocrinology, National Institute of Arthritis, Metabolism, and Digestive Diseases, Bethesda, MD 20014 Evaluators: William J. Driskell and Mark M. Bashor, NutriLional Biochemistry Branch, Clinical Chemistry D...
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A collaborative study was conducted for the determination of vitamins A and E. Existing AOAC liquid chromatographic (LC) methods are suited for specific vitamins A and E analytical applications. This method differs from existing methods in that it can be used to assay samples in all 9 sectors of the food matrix. Standards and test samples are saponified in basic ethanol-water solution, neutrali...
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We report a fast, simple high-performance liquid-chromatographic assay for serum alpha-tocopherol, with use of a reversed-phase column and tocol as internal standard. Only 200 microliter of serum is required. Isocratic elution of the n-hexane extract is done within 6 min; total analysis time is less than 1 h. Within-day precision (CV) was 2.3% for 24 samples of a normal plasma pool (mean concn,...
متن کاملALPHA -TOCOPHEROL IN CANCER
Serum alpha-tocopherol of98(62 male and 36 female) cancer patients and 30 (13 male and 17 female) control healthy subjects was investigated. The cancer patients showed a significantly low level of alpha-tocopherol as compared to control healthy subjects. Also, significantly higher levels of serum alpha-tocopherol were found in complete remission patients as compared to the partial response...
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ژورنال
عنوان ژورنال: Revista de Chimie
سال: 2019
ISSN: 0034-7752,2668-8212
DOI: 10.37358/rc.19.2.6954