Synthesis and application of novel food emulsifier
An emulsifier and food technology, applied in the fields of application, food science, organic chemistry, etc., can solve problems such as high cost, not suitable for food industry applications, complex preparation process, etc.
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Embodiment 1
[0032] refer to figure 1 :
[0033] A: Take commercially available food-grade xylitol 2 (10g) and C18 stearic acid 1 (2.2 equivalents) and mix directly, add 1.0 equivalents of solid lipase (C.Antarctica), depressurize to 0.01ba (10 hundred Pa), continue to react at 70-75°C for 24-32 hours, and the reaction intermediate can be purified by multiple recrystallizations with ethanol / methyl tert-butyl ether system (10:1) to obtain product 3;
[0034] Features of product 3 13 C NMR data are as follows (ppm): 173.1(2C), 74.4, 68.7(2C), 65.3(2C), 33.9(2C), 31.9(2C), 29.6(18C), 29.3(2C), 29.0(2C), 25.0(2C), 22.7(2C), 14.1(2C).
Embodiment 2
[0036] refer to figure 2 :
[0037] B: Mix commercially available food-grade xylitol 2 (10g) with C16 fatty acid 4 (2.2 equivalents) directly, add 1.0 equivalents of solid lipase (C.Antarctica), and reduce the pressure to 0.01ba (10 hPa) , continue to react at 70-75°C for 24-32 hours, and the reaction intermediate can be purified by multiple recrystallizations with ethanol / methyl tert-butyl ether system (5:1) to obtain product 5;
[0038] Features of product 5 13 C NMR data are as follows (ppm): 173.1(2C), 74.4, 68.7(2C), 65.3(2C), 33.9(2C), 31.9(2C), 29.6(16C), 29.3(2C), 29.0(2C), 25.0(2C), 22.7(2C), 14.1(2C).
Embodiment 3
[0040] refer to image 3 :
[0041] C: Mix commercially available food-grade xylitol 2 (10g) with C14 fatty acid 6 (2.2 equivalents) directly, add 1.0 equivalents of solid lipase (C.Antarctica), and depressurize to 0.01ba (10 hPa) , continue to react at 70-75°C for 24-32 hours, and the reaction intermediate can be purified by multiple recrystallizations with ethanol / methyl tert-butyl ether system (10:3) to obtain product 7;
[0042] Features of Product 7 13 C NMR data are as follows (ppm): 173.1(2C), 74.4, 68.7(2C), 65.3(2C), 33.9(2C), 31.9(2C), 29.6(14C), 29.3(2C), 29.0(2C), 25.0(2C), 22.7(2C), 14.1(2C).
[0043] From Examples 1-3, it can be seen that changing the ratio of xylitol and fatty acid can result in a mixture of monoester and diester products, the ratio is uncertain, but when used as an emulsifier, increasing the amount used can also ensure the emulsification effect. Under the premise that other conditions remain unchanged, only reducing the amount of solid enzy...
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