نتایج جستجو برای: γ tocopherol

تعداد نتایج: 81475  

Journal: :iranian journal of pharmaceutical research 0
behrooz jannat food and drug laboratory research center, ministry of health and medical education, tehran, iran. mohammad reza oveisi department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran. naficeh sadeghi department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran. mannan hajimahmoodi department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran. massomeh behzad department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran. bahman nahavandi department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran.

sesame (sesamum indicum l.) seed and oil have long been used widely as healthy foods to supply energy and prevent aging. some of the main active anti-oxidative constituents in sesame seeds are γ-tocopherol and phenols. the purpose of this study was to investigate the relationship between roasting temperature and time with γ-tocopherol and total phenolic compounds (tpc) of sesame seeds when roas...

Sesame (Sesamum indicum L.) seed and oil have long been used widely as healthy foods to supply energy and prevent aging. Some of the main active anti-oxidative constituents in sesame seeds are γ-tocopherol and phenols. The purpose of this study was to investigate the relationship between roasting temperature and time with γ-tocopherol and total phenolic compounds (TPC) of sesame seeds when roas...

Vitamin E is one of the lipid soluble vitamins consisting of several isoforms, including tocopherols and tocotrienols amongst which the alpha tocopherol is the most active one. The conversion of γ tocophrol to α tocopherol takes place by the activity of γ-tmt enzyme. Many plants including canola lack the γ-tmt gene to enable them to convert γ tocophrol into α tocopherol. The aim of this study w...

Sesame (Sesamum indicum L.) seed and oil have long been used widely as healthy foods to supply energy and prevent aging. Some of the main active anti-oxidative constituents in sesame seeds are γ-tocopherol and phenols. The purpose of this study was to investigate the relationship between roasting temperature and time with γ-tocopherol and total phenolic compounds (TPC) of sesame seeds when roas...

2011
Amanda K. Smolarek Nanjoo Suh

Vitamin E consists of eight different variants: α-, β-, γ-, and δ-tocopherols (saturated phytyl tail) and α-, β-, γ-, and δ-tocotrienols (unsaturated phytyl tail). Cancer prevention studies with vitamin E have primarily utilized the variant α-tocopherol. To no avail, a majority of these studies focused on variant α-tocopherol with inconsistent results. However, γ-tocopherol, and more recently δ...

2003
M. T. Gawlik M. B. Gawlik A. Górka J. Brandys

An HPLC method for determination of αand γ-tocopherol in rat blood has been optimized and validated. The optimum means of separation and analysis of tocopherol homologs were selected on the basis of procedures found in the literature; documentary evidence is presented which shows precision and accuracy were satisfactory. Spectrofluorimetric detection was performed after separation on a Separon ...

2014
Michelle E Marchese Rajesh Kumar Laura A Colangelo Pedro C Avila David R Jacobs Myron Gross Akshay Sood Kiang Liu Joan M Cook-Mills

BACKGROUND Clinical studies of the associations of vitamin E with lung function have reported conflicting results. However, these reports primarily examine the α-tocopherol isoform of vitamin E and have not included the isoform γ-tocopherol which we recently demonstrated in vitro opposes the function of α-tocopherol. We previously demonstrated, in vitro and in animal studies, that the vitamin E...

Journal: :Journal of the American College of Nutrition 2014
Weiwen Chai Rachel Novotny Gertraud Maskarinec Loic Le Marchand Adrian A Franke Robert V Cooney

OBJECTIVE Lipid-soluble antioxidants are associated with a lower incidence for many chronic diseases of aging, possibly by preventing damage from chronic inflammation. In the current study, we compared serum levels of coenzyme Q₁₀ (CoQ₁₀), α-tocopherol, γ-tocopherol, and C-reactive protein (CRP) between adolescent girls and premenopausal women to assess changes from childhood to midlife. METH...

2016
Maria Stefanie Dwiyanti Shouhei Maruyama Mari Hirono Masako Sato Euiho Park Sei Hyung Yoon Tetsuya Yamada Jun Abe

Alpha-tocopherol is one of four tocopherol isoforms and has the highest vitamin E activity in humans. Most cultivated soybean seeds contain γ-tocopherol as the predominant form, and the ratio of α-tocopherol content to total tocopherol content (α-tocopherol ratio) is <10%. Three soybean accessions from Eastern Europe have α-tocopherol ratios of >20%. This higher content is likely due to mutatio...

Journal: :Thrombosis research 2010
Lazarela Vucinic Indu Singh Fiona J Spargo John A Hawley Matthew D Linden

INTRODUCTION: Strenuous exercise in sedentary individuals increases the acute risk of atherothrombotic events and depletes endogenous antioxidants. Supplementation with the antioxidant tocopherol ameliorates the risk; however it is unclear whether α-tocopherol, γ-tocopherol or a combination of both is more efficacious. We therefore measured the effects of γ-,αand mixed tocopherol supplementatio...

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