Method for extracting D-allose from nut shells by microwave radiation process

A microwave radiation method, microwave radiation technology, applied in the direction of chemical instruments and methods, monosaccharides, sugar derivatives, etc., can solve the problems of high price of biological enzymes, high price of D-allose, etc., to improve resource utilization, Enhancement of added value and efficient extraction

Active Publication Date: 2021-03-19
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although this bio-enzyme catalyzed synthesis method is very good, the price of the bio-enzyme itself is very expensive, which also causes the price of D-allose to remain high

Method used

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  • Method for extracting D-allose from nut shells by microwave radiation process
  • Method for extracting D-allose from nut shells by microwave radiation process
  • Method for extracting D-allose from nut shells by microwave radiation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this example, D-allose is extracted from Cornus officinalis. The raw material of Cornus officinalis comes from the Funiu Mountain area in Henan, which is the plant waste of Cornus officinalis. The specific extraction process is as follows:

[0045] Crush Cornus officinalis seeds into particles with a particle size not greater than 5cm. After that, accurately weigh 100g of crushed Cornus officinalis seeds and 2.0g of wave-absorbing material according to the mass ratio of 1:0.02. The wave-absorbing material used here is The mass ratio is 0.5:1 The compound of ferric oxide and graphite, after fully mixing, is placed in the round bottom flask in the microwave reactor, the power of the microwave reactor is set to 800W, and the microwave reactor is turned on. Microwave radiation reaction 10min. After the reaction, the liquid in the Erlenmeyer flask was collected. The liquid is subjected to rotary distillation separation at a vacuum degree of 500mmHg and a temperature of 1...

Embodiment 2

[0050] In this example, D-allose is extracted from Cornus officinalis. The raw material of Cornus officinalis comes from the Funiu Mountain area in Henan, which is the plant waste of Cornus officinalis. The specific extraction process is as follows:

[0051] Crush Cornus officinalis seeds into particles with a particle size not greater than 2cm. After that, accurately weigh 100g of crushed Cornus officinalis seeds and 5.0g of wave-absorbing material according to the mass ratio of 1:0.05. The wave-absorbing material used here is The compound of ferric oxide and activated carbon with a mass ratio of 1:1, after fully mixing, is placed in a round-bottomed flask in a microwave reactor, the power of the microwave reactor is set to 700W, and the microwave reactor is turned on. Microwave radiation reaction 15min. After the reaction, the liquid in the Erlenmeyer flask was collected. The liquid is subjected to rotary distillation separation at a vacuum degree of 600mmHg and a temperatu...

Embodiment 3

[0053] In this example, D-allose is extracted from walnut shells. The specific extraction process is as follows:

[0054] Crush the walnut shells into particles with a particle size not greater than 3cm. After that, accurately weigh 100g of the crushed walnut shell particles and 3.0g of the wave-absorbing material according to the mass ratio of 1:0.03. The wave-absorbing material used here is The compound of cobalt oxide and graphite with a mass ratio of 0.3:1.2, after being fully mixed, is placed in a round bottom flask in a microwave reactor, the power of the microwave reactor is set to 500W, and the microwave reactor is turned on for microwave radiation React for 20 minutes. After the reaction, the liquid in the Erlenmeyer flask was collected. The liquid is subjected to rotary distillation separation at a vacuum degree of 300mmHg and a temperature of 150°C to separate part of the water and low-boiling point oil until no fraction flows out; then, the viscous solid phase obt...

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Abstract

The invention discloses a method for extracting D-allose from nut shells by a microwave radiation process. The method comprises the following steps of crushing the nut shells, carrying out microwave radiation on the crushed nut shells, carrying out solid-liquid separation on a product obtained after microwave radiation, carrying out rotary evaporation separation on a liquid obtained after solid-liquid separation, washing a viscous solid phase obtained after rotary evaporation separation with a polar solvent, and carrying out water dissolution recrystallization on insoluble substances obtainedafter washing with the polar solvent. According to the method, plant wastes, namely the nut shells, are used as raw materials, and a green reaction process is adopted, so that rare sugar, namely the D-allose, can be rapidly and efficiently extracted from the nut shells, the production cost of the D-allose is greatly reduced, and the additional value and the resource utilization rate of the nut shells are improved.

Description

technical field [0001] The invention relates to the technical field of D-allose preparation, in particular to a method for extracting D-allose from nut shells by microwave radiation. Background technique [0002] D-Allose (D-Allose) is a rare sugar, which is the C-3 epimer of D-glucose, cis-aldohexose, it is a sweet white crystal, and its molecular formula is C 6 h 12 o 6 , the molecular mass is 180.16, the melting point is 128°C, it is optically active, soluble in water, insoluble in organic solvents such as ethanol. D-allose has a wide range of physiological functions, such as excellent tumor suppressor effect, auxiliary effect of cancer radiotherapy and chemotherapy, and has become a hot spot in the research of rare sugar functionality and biotransformation. [0003] D-allose plays a very important function in the fields of diet, health care, and medicine. Its physiological functions mainly include: (1) Inhibit carcinogenesis and inhibit the proliferation of various c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/02C07H1/08
CPCC07H3/02C07H1/08
Inventor 刘娥建方方刘小婧靳泽森
Owner HENAN UNIV OF SCI & TECH
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