Add time:10/01/2019 Source:sciencedirect.com
Retinol, tocopherols and carotenes were extracted from walnut kernels. Three walnut extraction procedures were compared. Direct hexane extraction was selected. The fat-soluble vitamin separation was achieved by reversed-phase high performance liquid chromatography equipped with a ternary mobile phase gradient (methanol, butanol, water), and wavelength programming. The chromatographic run was under 35 minutes. This technique allowed a good resolution of α, γ, δ tocopherols, α and β carotenes and retinol.Two walnut varieties (Franquette and Hartley) from two geographical origins (France, USA) were analyzed. Retinol, and carotenes were not identified in walnuts. The amounts of α, γ, δ tocopherols ranged respectively from 1.08 to 4.05, 21.78 to 26.46, and 2.51 to 4.23 (mg/100 g).Significant differences related to variety and geographical origin were observed. A decrease in tocopherols (about 30%) was observed after 3 month refrigerated storage.
We also recommend Trading Suppliers and Manufacturers of TOCOPHER (TOCOPHEROL ACETATE) (cas 1406-70-8). Pls Click Website Link as below: cas 1406-70-8 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View