Results 71 to 80 of about 179,784 (402)
Plant, Cell and Environment, 2014 In the present study, singlet oxygen (¹O₂) scavenging activity of tocopherol and plastochromanol was examined in tocopherol cyclase-deficient mutant (vte1) of Arabidopsis thaliana lacking both tocopherol and plastochromanol.
A. Rastogi +5 more
semanticscholar +1 more source
Studies on Tocopherol Derivatives. I. Conversion of β-, γ-, and δ-Tocopherol to α-Tocopherol
Chemical and Pharmaceutical Bulletin, 1971 A four-step methylation of β-, γ-, and δ-tocopherol to α-tocopherol is described. All of the intermediates are isolated and characterized. The purities of methylated tocopherols are determined by quantitative gas liquid chromatography. The four steps are Mannich reaction, acetolysis, reductive cleavage, and reduction.
Shizumasa Kijima, Tetsuya Nakamura
openaire +3 more sources
Foods, 2023 Multiple varieties of flaxseeds have been identified in the world, yet the relationship between these varieties, their agronomic traits, and their seeds’ quality remains unclear. This study aimed to determine the level of lignan, vitamins and carotenoids
Zhimin Wu +8 more
doaj +1 more source
PhytoMilk: Effects of botanical composition and harvest system of legume/grass silage on fatty acid, α-tocopherol and β-carotene concentration in organic forage and milk [PDF]
, 2010 Red clover and high proportion of forage in dairy cow diet increases the concentration of bioactive substances in milk, e.g. unsaturated fatty acids and antioxidants. In the present experiment twenty-four Swedish Red dairy cows were fed three silages in
Gustavsson, Anne-Maj +3 more
core
Generation of superoxide and singlet oxygen from α-tocopherolquinone and analogues. [PDF]
, 2007 Three potential routes to generation of reactive oxygen species from a tocopherolquinone have been identified. The quinone of the water-soluble vitamin E analogue Trolox C (Trol-Q) is reduced by hydrated electron and isopropanol a hydroxyalkyl radical ...
Bisby, RH +4 more
core +1 more source
Plant Physiology, 2014 Two known chlorophyll-related types of phytol hydrolases may only play limited roles in tocopherol biosynthesis in Arabidopsis seeds, implicating another unknown dephytylase that may exist.
Wei Zhang +6 more
semanticscholar +1 more source
Journal of the American Oil Chemists' Society, EarlyView.ABSTRACT The quality and shelf life of extra virgin olive oil (EVOO) are pivotal to its marketability and consumer satisfaction. This study evaluated how pyropheophytin a (PPP) and 1,2‐diacylglycerols (DAGs) changed for different varieties of EVOO over a 24‐month storage period under varying temperature conditions (16°C, 18°C, and 20°C).
Xueqi Li +6 more
wiley +1 more source
Characterization of grape seed and pomace oil extracts
Grasas y Aceites, 2007 The objective of this study was to determine the nutrient and antioxidant contents of grape seed and pomace oil extracts from the main Turkish wine grape cultivars, Kalecik karas1, Narince, Hasandede and Emir. Dried and powdered seed and pomace materials
Nilgün Göktürk Baydar +2 more
doaj +1 more source
Quality Change in Camellia Oil during Intermittent Frying
Foods, 2022 Camellia oil with a high oleic acid content is widely used for frying. To comprehensively describe the quality change in camellia oil during frying, the changes in composition, deterioration indicators, and volatile profiles were investigated.
Xiaofang Liu +5 more
doaj +1 more source
Gamma-tocopherol detoxification of nitrogen dioxide: superiority to alpha-tocopherol. [PDF]
Proceedings of the National Academy of Sciences, 1993 In the vitamin E group, alpha-tocopherol is generally considered to be the most potent antioxidant with the highest vitamin bioactivity, yet gamma-tocopherol is produced in greater amounts by many plants and is the principal tocopherol in the United States diet.
Patricia J. Harwood +5 more
openaire +3 more sources