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- W2971861688 endingPage "3227" @default.
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- W2971861688 abstract "Ascorbyl palmitate is a fatty acid ester endowed with antioxidant properties, used as a food additive and cosmetic ingredient, which is presently produced by chemical synthesis. Ascorbyl palmitate was synthesized from ascorbic acid and palmitic acid with a Pseudomonas stutzeri lipase immobilized on octyl silica, and also with the commercial immobilized lipase Novozym 435. The latter was selected for optimizing the reaction conditions because of its high reactivity and stability in the solvent 2-methyl-2-butanol used as reaction medium. The reaction of the synthesis was studied considering temperature and molar ratio of substrates as variables and synthesis yield as response parameter. The highest yield in the synthesis of ascorbyl palmitate was 81%, obtained at 55 °C and an ascorbic acid to palmitic acid molar ratio of 1:8, both variables having a strong effect on yield. The synthesized ascorbyl palmitate was purified to 94.4%, with a purification yield of 84.2%. The use of generally recognized as safe (GRAS) certified solvents with a polarity suitable for the solubilization of the compounds made the process a viable alternative for the synthesis and downstream processing of ascorbyl palmitate." @default.
- W2971861688 created "2019-09-12" @default.
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- W2971861688 date "2019-09-05" @default.
- W2971861688 modified "2023-10-15" @default.
- W2971861688 title "Synthesis with Immobilized Lipases and Downstream Processing of Ascorbyl Palmitate" @default.
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- W2971861688 doi "https://doi.org/10.3390/molecules24183227" @default.
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