Method for preparing monolaurin
A technology of glyceryl laurate and monodecyl, which is applied in the field of preparation of single-medium-carbon chain fatty acid glyceride food additives, and can solve the problems that the alcoholysis catalyst cannot be reused, the content of carbon-chain fatty acids is low, and the energy consumption and production cost are high. , to achieve the effect of reducing fat deposition, low melting point, and reducing emissions
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Embodiment 1
[0030] (1) Degumming and dehydrating camphor tree seed crude oil. After stirring and heating to 65°C, add phosphoric acid (concentration: 85%) with 0.1% oil weight and 65°C water with 10% oil weight while stirring, continue stirring for 15 minutes, stop stirring and let stand for 10 minutes. After that, it was centrifuged and dehydrated under reduced pressure.
[0031] (2) Esterification and partial alcoholysis of camphor tree seed oil catalyzed by acidic ionic liquid
[0032] Take by weighing 100g camphor tree seed oil (acid value is 13.6), glycerol 27.6g in 500mL there-necked flask (alcohol-oil molar ratio 1.8: 1), and add acidic ionic liquid catalyst 1-methyl-3-( 3-sulfopropyl) imidazole p-toluenesulfonate ([HSO 3 -pmim] + [pTSA] - ) 3.5g, stirred and heated to raise the temperature, and the reaction time was 2h at 142°C, the acid value was reduced to 0.25, and the monoglyceride content was 24.8%. After centrifugation, the esterification and partial alcoholysis of the ...
Embodiment 2
[0040] (1) Degumming and dehydrating camphor tree seed crude oil. After stirring and heating to 65°C, add phosphoric acid (concentration: 85%) with 0.1% oil weight and 65°C water with 10% oil weight while stirring, continue stirring for 15 minutes, stop stirring and let stand for 10 minutes. After that, it was centrifuged and dehydrated under reduced pressure.
[0041] (2) Esterification and partial alcoholysis of camphor tree seed oil catalyzed by acidic ionic liquid
[0042] Take by weighing 100g camphor tree seed oil (acid value is 13.6), glycerol 38.3g in 500mL there-necked flask (alcohol-oil molar ratio 2.5: 1), and add acidic ionic liquid catalyst 1-methyl-3-( 3-sulfopropyl) imidazole p-toluenesulfonate ([HSO 3 -pmim] + [pTSA] - ) 4.0g, stirred and heated to raise the temperature, the reaction time was 2h at 145°C, the acid value was reduced to 0.21, and the monoglyceride content was 28.5%. After centrifugation, the esterification and partial alcoholysis of the camp...
Embodiment 3
[0050] (1) Degumming and dehydrating camphor tree seed crude oil. After stirring and heating to 65°C, add phosphoric acid (concentration: 85%) with 0.1% oil weight and 65°C water with 10% oil weight while stirring, continue stirring for 15 minutes, stop stirring and let stand for 10 minutes. After that, it was centrifuged and dehydrated under reduced pressure.
[0051] (2) Esterification and partial alcoholysis of camphor tree seed oil catalyzed by acidic ionic liquid
[0052] Take by weighing 100g camphor tree seed oil (acid value is 13.6), glycerol 23.0g in 500mL there-necked flask (alcohol-oil molar ratio 1.5: 1), and add acidic ionic liquid catalyst 1-methyl-3-( 3-sulfopropyl) imidazole p-toluenesulfonate ([HSO 3 -pmim] + [pTSA] - ) 4.0g, stirred and heated to raise the temperature, the reaction time was 2.5h at 135°C, the acid value was reduced to 0.28, and the monoglyceride content was 23.5%. After centrifugation, the esterification and partial alcoholysis of the ca...
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