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Method for improving particle size and fluidity of psicose crystal

A technology of allulose and fluidity, which is applied in the field of functional sugar preparation, can solve problems such as unfavorable fluidized bed separation, unsatisfactory crystal shape, and uneven crystal particle size distribution, so as to improve crystal morphology indicators and improve fluidity , weaken the effect of adsorption

Active Publication Date: 2022-02-11
山东福洋生物科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of sticky crystals and polycrystals not only leads to uneven distribution of crystal particle size and unsatisfactory crystal shape, but also increases crystal viscosity, which is not conducive to fluidized bed separation, and also reduces the fluidity of finished products, affecting the use effect

Method used

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  • Method for improving particle size and fluidity of psicose crystal
  • Method for improving particle size and fluidity of psicose crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add the D-psicose solution concentrated to 60% into the sugar boiling tank and continue to concentrate to 88%, add 2% allulose dry weight, grind, sieve, rinse with ethanol, and sieve again to obtain Seed crystal growth at 48°C for 4 hours;

[0031] (2) Put the D-psicose saturated solution after crystal growth into a crystallizer at 48°C, and lower it to 35°C at a rate of 0.2°C / h;

[0032] (3) The solution obtained in step (2) is subjected to ultrasonic treatment to assist crystallization, the treatment time is 15min, the ultrasonic power is 200w / kg solution, and the frequency is 20kHz;

[0033] (4) The solution obtained in step (3) is returned to temperature, and the temperature of the crystallization solution is raised to 38°C in 60 minutes, and kept at a constant temperature for 2 hours; then it is lowered to 25°C at a rate of 0.4°C / h, and the crystallization is stopped ;

[0034] (5) The product was centrifuged at 1300rpm for 60min, and dried in a fluidized bed...

Embodiment 2

[0039] (1) Add the D-psicose solution concentrated to 65% into the sugar boiling pot and continue to concentrate to 85%, add 1% allulose dry weight, grind, sieve, rinse with ethanol, and sieve again to obtain Seed crystal growth at a constant temperature of 48°C for 5 hours;

[0040] (2) Put the D-psicose saturated solution after crystal growth into a crystallizer at 45°C, and lower it to 30°C at a rate of 0.3°C / h;

[0041] (3) The solution obtained in step (2) is subjected to ultrasonic treatment to assist crystallization, the treatment time is 20min, the ultrasonic power is 200w / kg solution, and the frequency is 20kHz;

[0042] (4) The solution obtained in step (3) is returned to temperature, and the temperature of the crystallization solution is raised to 35°C in 45 minutes, and kept at a constant temperature for 1 hour; then it is lowered to 25°C at a rate of 0.5°C / h, and the crystallization is stopped ;

[0043] (5) The product was centrifuged at 1300rpm for 60min, and ...

Embodiment 3

[0047](1) Add the D-psicose solution concentrated to 70% into the sugar boiling tank and continue to concentrate to 85%, add 0.5% of allulose dry weight, grind, sieve, rinse with ethanol, and sieve again to obtain Seed crystal growth at a constant temperature of 48°C for 5 hours;

[0048] (2) Put the D-psicose saturated solution after crystal growth into a crystallizer at 48°C, and lower it to 35°C at a rate of 0.3°C / h;

[0049] (3) The solution obtained in step (2) is subjected to ultrasonic treatment to assist crystallization, the treatment time is 10min, the ultrasonic power is 200w / kg solution, and the frequency is 20kHz;

[0050] (4) The solution obtained in step (3) is returned to temperature, and the temperature of the crystallization solution is raised to 40°C in 30 minutes, and kept at a constant temperature for 1 hour; then it is lowered to 25°C at a rate of 0.5°C / h, and the crystallization is stopped ;

[0051] (5) The product was centrifuged at 1300rpm for 60min,...

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Abstract

The invention discloses a method for improving the particle size and fluidity of psicose crystals, and belongs to the technical field of functional sugar preparation. According to the method for improving the particle size and the fluidity of the psicose crystal, on the basis of a cooling crystallization technology and gradient cooling, ultrasonic treatment and temperature returning treatment are combined, small crystals in the crystallization process are reduced, and the viscosity of the solution is reduced, so that subsequent centrifugation and drying are facilitated, and the particle size and the fluidity of the crystal are improved. The D-psicose crystal prepared by the method is regular in shape, the product particle size distribution is that the mass fraction range of crystal particles of 16-30 meshes is 80-85%, the angle of repose is 30-35 degrees, and the D-psicose crystal has the characteristics of high purity, good fluidity, large crystal particle size, uniform shape and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of functional sugars, in particular to a method for improving the particle size and fluidity of allulose crystals. Background technique [0002] Allulose (D-psicose) is an epimer of fructose and a rare natural functional sugar in nature. Compared with D-glucose and D-fructose, allulose is quite sweet, but extremely low in calories, difficult to be digested and absorbed, and hardly provides energy for life activities. It is a safe and reliable low-calorie sweetener. In 2011, it was approved as a GRAS substance by the US FDA. At the same time, allulose also has a good application possibility in the field of medicine and health. It can inhibit fatty liver enzymes and intestinal α-glucosidase, thereby reducing the accumulation of body fat and inhibiting the rise of blood sugar concentration; it has a strong ability to scavenge active oxygen It has neuroprotective effect on 6-hydroxydopamine-indu...

Claims

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Application Information

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IPC IPC(8): C07H1/06C07H3/02C30B29/54C30B7/08C30B30/06
CPCC07H1/06C07H3/02C30B29/54C30B7/08C30B30/06C07B2200/13
Inventor 赵伟齐丹萍齐翠萍王健张雷达
Owner 山东福洋生物科技股份有限公司
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