Grease composition containing 1, 3-dioleic acid-2-palmitic acid triglyceride and preparation method of grease composition
A technology of palmitic acid triglyceride and oil composition, which is applied in the field of recycling the fatty acid mixture, can solve the problems of increasing the cost of preparing OPO, increasing the cost input of producing OPO, and improving the health attributes, reducing the difficulty and cost, cost reduction effect
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Embodiment 1
[0062] Weigh 0.4g ST52 palm stearin and place it in the reactor, and preheat it to 57°C, and the whole process is accompanied by mechanical stirring. Weigh 3.5g of the oleic acid mixture (wherein, by weight, the oleic acid content is 80%) and slowly add it into the preheated ST52 palm stearin, continue heating and stirring until transparent and clear. Accurately weighed 450 mg of immobilized RM IM lipase, added to the reaction mixture, and reacted at a temperature of 57° C. to obtain a crude composition 1. The content of C54 triglyceride in the crude composition 1 was monitored. When the content of C54 triglyceride reached 25%, 0.6 g of ST52 palm stearin was added to continue the reaction for 4 hours to obtain crude composition 2. The crude composition was purified by molecular distillation (evaporation temperature, 185 °C; condenser temperature, 40 °C; heat exchanger temperature, 60 °C; rotary wiper speed, 120 rpm; feed rate, 2 mL / min; absolute pressure, 2 Pa) 2. Separation ...
Embodiment 2-4
[0064] In Examples 2-4, the addition amounts of the oleic acid mixture were 5g, 4g and 3g respectively, and the addition amounts and experimental conditions of other raw materials were the same as in Example 1.
Embodiment 5-6
[0066]In embodiment 5, the first addition amount of ST52 palm stearin is 0.3g, and the addition amount is 0.7g again, and the addition amount and experimental conditions of other substances are the same as in embodiment 1.
[0067] In embodiment 6, the initial addition amount of ST52 palm stearin is 0.7g, and the addition amount is 0.3g again, and the addition amount and experimental conditions of other substances are the same as in embodiment 1.
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