期刊名称：International Journal of Environment and Bioenergy
电子版ISSN：2165-8951
出版年度：2016
卷号：11
期号：1
页码：1-11
语种：English
出版社：Modern Scientific Press
摘要：Purification of mono-diacylglycerides (MDAG) through saponification and solvent extraction was studied. MDAG was prepared by direct esterification of glycerol, a by product of biodiesel process, with palm fatty acids distillates (PFAD) in the presence of acid catalyst methylester sulfonates. The purification process started with addition of nhexane to remove TAG, followed by saponification with alkaline solution to saponify free fatty acids and extraction to dissolve soaps. The result showed that saponification and solvent extraction can increase the purity of MDAG. The white, dry texture, and odorless product obtained from saponification with 0.1 N NaOH and extraction with ethanol and water (1:1). The yield of MDAG was 39.68%, pH value of 6.0, melting point at 52oC, and 72% emulsion stability for 12 hours. The approximate content of MDAG from TLC analysis was 48%, while free fatty acid was 13.62%.
