By Charles D. Harris
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The reaction is catalyzed by strong mineral or organic acids. If the reaction vessel is suitably equipped, acetic acid may be removed by distillation and recycled to regenerate acetic anhydride. (2) Monoacylglycerols may also be reacted with glyceryl triacetate (triacetoin) using an alkaline catalyst. Although acetic acid is not formed as a by-product, glyceryl di- and triacetate is produced and must be removed by distillation at reduced pressures. The advantage of the latter process is that the reaction mixture is less corrosive and less flammable.
1976). 4 Citrate Esters of Monoacylglycerols (CITREM) Condensation of monoacylglycerol with citric acid or its anhydride produces a derivative with diverse functional groups. L. Hasenhuettl size and polarity. In addition to their surface and interfacial activity, the citrate esters can chelate transition metals, which promote oxidation, such as iron and copper. , acetic acid (Bade, 1978). The anhydride method can be carried out at lower temperatures. However, this process is more expensive because of the extra step necessary to synthesize of the anhydride.
Murakama, C. et al. (1989). Shokuhin Easeigaku Zasshi 30(4): 306–13. Nakamura, T. et al. (1986). Sucrose Fatty Acid Esters—Reaction at Atmospheric Pressure. Inf. Int. 18(37): 8–13. Nielsen, V. et al. (1971). Propylene Glycol Alginate. German DE 204,6966. Noto, V. H. and Pettitt, D. J. (1972). Propylene Glycol Alginate. German DE 2641303, Merck & Company: DE 2641303. Okumura, H. et al. (2001). Determination of Sucrose Fatty Acid Esters by High Performance Liqyud Chromatography. J. Oleo Sci. 50(4), 249–54.