Method for isolating jatropha curcas oil polyunsaturated fatty acids
An unsaturated fatty acid and fatty acid technology, which is applied in the production of fat/fat, chemical instruments and methods, and fat production, can solve the problems of high energy consumption, long isolation period, and unutilized urea inclusion compounds, and achieves a reduction in energy consumption. The effect of high consumption, short isolation cycle and high content of active ingredients
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Embodiment 1
[0028] According to the ratio of mass ratio m fatty acid: m methanol = 1:2, methanol and fatty acid are mixed evenly and sealed in the refrigerator, pre-cooled at 0.5 ° C for 1 h, and frozen at -20 ° C for 2 h to pre-concentrate UFAs by cryogenic crystallization method, And filter under normal pressure under the freezing condition of -20 ℃, and the resulting filtrate is distilled under reduced pressure to recover methanol to obtain fatty acid I. The yield of fatty acid I was 38.08%, the purity of PUFAs was 65.36%, and the yield of PUFAs was 61.44%.
Embodiment 2
[0030] According to mass ratio m 脂肪酸 :m 甲醇 =1:3 ratio, mix methanol and fatty acid evenly, seal in the refrigerator, pre-cool at 0.5°C for 1h, freeze at -20°C for 2h, separate saturated and UFAs by cryogenic crystallization, and freeze at -20°C Filtration under normal pressure conditions, and the obtained filtrate was distilled under reduced pressure to recover methanol to obtain fatty acid I. The yield of fatty acid I was 40.04%, the purity of PUFAs was 57.23%, and the yield of PUFAs was 56.57%.
Embodiment 3
[0032] According to mass ratio m 脂肪酸 :m 甲醇=1:4 ratio, mix methanol and fatty acid evenly, seal in the refrigerator, pre-cool at 0.5°C for 1h, freeze at -20°C for 2h, separate saturated and UFAs by cryogenic crystallization, and freeze at -20°C Filtration under normal pressure conditions, and the obtained filtrate was distilled under reduced pressure to recover methanol to obtain fatty acid I. The yield of fatty acid I was 41.89%, the purity of PUFAs was 52.55%, and the yield of PUFAs was 54.34%.
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