General Method
1) A triglyceride is melted, and glycerol compound (and optionally a catalyst, typically an alkaline catalyst) is charged to a reactor. The proportion of monoglycerides in the mono-diglyceride mixture will depend on the proportions of triglyceride and glycerol used. Table 1 indicates suitable proportions of triglyceride and glycerol that may be used.
2) The temperature in the reactor is brought to the reaction temperature of between 240- 255°C.
3) The reaction mixture is reacted at the reaction temperature until the reaction mixture becomes clear, and thereafter a further 30 minutes.
4) If a catalyst has been used, the reaction mixture is neutralized with phosphoric acid.
5) The reaction mixture is cooled to about 90C.
6) A deodorisation setup is prepared and the reaction mixture is deodorized at 140C, at <0.5mmHg for 30 minutes.
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