Two-phase deep-eutectic solvent capable of extracting active components of ginkgo leaves, and preparation method and extraction method of two-phase deep-eutectic solvent
A co-melting solvent and active ingredient technology, applied in the field of utilization of agricultural and forestry biological resources, can solve the problems of waste of biological active ingredients, environmental and human hazards, increase extraction steps, etc., and achieve low cost, good fluidity, and low vapor pressure.
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[0047] Example 1
[0048] (1) Weigh choline chloride and levulinic acid at a molar ratio of 1:2 and mix them evenly. Heat and stir at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES1. Combine DES1 with water. Mix according to the mass ratio of 6:4 to obtain substance A;
[0049] (2) Weigh choline chloride and malonic acid at a molar ratio of 1:2 and mix them evenly. Heat and stir at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES2. Combine DES2 with water. Mix according to the mass ratio of 4.5:5.5 to obtain substance B;
[0050] (3) Mix substance A and substance B at a volume ratio of 8.75:1.25 to obtain the hydrophilic phase of the two-phase deep co-solvent;
[0051] (4) At a molar ratio of 1:2:3, weigh methyl trioctyl ammonium chloride, octanol and octanoic acid and mix them evenly. Heat at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES3 , As the hydrophobic phase of the two-phase deep c...
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[0053] Example 2
[0054] (1) The ratio of moles is 1:2.5. Weigh choline chloride and levulinic acid and mix them evenly. Heat and stir at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES1. Combine DES1 with water Mix according to the mass ratio of 6:4.5 to obtain substance A;
[0055] (2) Weigh choline chloride and malonic acid at a molar ratio of 1:2.5 and mix them evenly. Heat and stir at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES2. Combine DES2 with water. Mix according to the mass ratio of 4.5:6 to obtain substance B;
[0056] (3) Mix substance A and substance B in a volume ratio of 7.75:2.25 to obtain the hydrophilic phase of the two-phase deep co-solvent;
[0057] (4) At a molar ratio of 1:2:3.5, weigh the methyl trioctyl ammonium chloride, octanol and octanoic acid and mix them evenly. Heat at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES3 , As the hydrophobic phase of the two-...
Example Embodiment
[0059] Example 3
[0060] (1) The ratio of moles is 1:1.5. Weigh choline chloride and levulinic acid and mix them evenly. Heat and stir at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES1. Combine DES1 with water Mix according to the mass ratio of 6:3.5 to obtain substance A;
[0061] (2) Weigh choline chloride and malonic acid at a molar ratio of 1:1.5 and mix them evenly. Heat and stir at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES2. Combine DES2 with water Mix according to the mass ratio of 4.5:5 to obtain substance B;
[0062] (3) Mix substance A and substance B at a volume ratio of 8.75:1.25 to obtain the hydrophilic phase of the two-phase deep co-dissolving solvent;
[0063] (4) At a molar ratio of 1:2:2.5, weigh the methyl trioctyl ammonium chloride, octanol and octanoic acid and mix them evenly. Heat at 80~110℃ until a transparent liquid is formed, which is the deep co-solvent DES3 , As the hydrophobic phase o...
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