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Decolorizing method for Huping jujube polysaccharide solution

A jujube polysaccharide and jujube jujube technology, which is applied in the field of decolorization of jujube polysaccharide solution in pots and bottles, can solve the problems of high equipment requirements, difficult separation of activated carbon, high loss of polysaccharides, etc., to achieve improved purity, high decolorization rate, high retention rate of polysaccharides, and low cost and low equipment requirements

Inactive Publication Date: 2015-12-30
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant patent on the decolorization of jujube polysaccharides with hydrogen peroxide. In the Chinese patent with publication number CN101914166A, hydrogen peroxide is used to decolorize corn silk polysaccharides. The decolorization rate and polysaccharide loss rate are 90.7% and 18.80%, respectively. Lead to polysaccharide degradation, which is not conducive to the analysis, research and application of polysaccharides; in the Chinese patent with publication number CN101899120A, activated carbon is used to decolorize the polysaccharides of jujube jujube, and the polysaccharide content in the final product is ≥ 95%, but the decolorization rate is not measured in the patent And explanation, and the active carbon in the solution after decolorization of this method is difficult to separate completely, polysaccharide loss is higher; Adopt ion-exchange resin column chromatography and polyamide resin column chromatography respectively in the Chinese patent of publication number CN102477104A and CN102079792A to red jujube polysaccharide Decolorization, the process is relatively cumbersome, the equipment requirements are high, and there is no relevant measurement and description of the decolorization rate

Method used

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  • Decolorizing method for Huping jujube polysaccharide solution
  • Decolorizing method for Huping jujube polysaccharide solution
  • Decolorizing method for Huping jujube polysaccharide solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A certain amount of jujube jujube is peeled, pitted and sliced ​​with a stainless steel knife, 1000g of jujube meat is taken, and 5000ml of distilled water is added to make a pulp with a colloid mill, and it is dried and powdered by vacuum freeze-drying technology. After freezing for 4 hours, dry for 100 hours at a vacuum degree of 320mtorr and a condensation temperature of -55°C. The drying curve is shown in the appendix figure 2 , The measured powder moisture content is 6.87%. Jujube jujube polysaccharides were extracted by decompression and internal boiling method. The process parameters were as follows: internal temperature of the system was 50°C, ratio of liquid to solid was 50:1 (ml:g), time was 30 minutes, vacuum degree was 87kPa, and external temperature was 60°C. The extract was suction-filtered twice continuously, concentrated under reduced pressure at 50°C to a certain volume, and precipitated with 4 times the volume of 95% ethanol, and the precipitate was w...

Embodiment 2

[0028] Use a stainless steel knife to peel, pit, and slice a certain amount of jujube jujube in a pot, take 800g of jujube meat, add 4000ml of distilled water and use a colloid mill to make a pulp, and use vacuum freeze-drying technology to dry it to make powder. After freezing for 4 hours, dry for 100 hours at a vacuum degree of 320mtorr and a condensation temperature of -55°C. The drying curve is shown in the appendix figure 2 , The measured powder moisture content is 6.87%. Jujube jujube polysaccharides were extracted by decompression and internal boiling method. The process parameters were as follows: internal temperature of the system was 60°C, ratio of liquid to solid was 50:1 (ml:g), time was 45min, vacuum degree was 80kPa, and external temperature was 71°C. The extract was suction-filtered twice continuously, concentrated under reduced pressure at 55°C to a certain volume, and precipitated with 4 times the volume of 95% ethanol, and the precipitate was washed with a c...

Embodiment 3

[0030] A certain amount of jujube jujube is peeled, pitted and sliced ​​with a stainless steel knife, 500g of jujube meat is taken, and 2500ml of distilled water is added to make a pulp with a colloid mill, and it is dried and powdered by vacuum freeze-drying technology. After freezing for 4 hours, dry for 100 hours at a vacuum degree of 320mtorr and a condensation temperature of -55°C. The drying curve is shown in the appendix figure 2 , The measured powder moisture content is 6.87%. Jujube jujube polysaccharide was extracted by decompression and internal boiling method. The process parameters were as follows: temperature inside the system was 70°C, ratio of liquid to material was 60:1 (ml:g), time was 30 minutes, vacuum degree was 74kPa, and external temperature was 82°C. Suction-filter the extract twice consecutively, concentrate under reduced pressure at 60°C to a certain volume, precipitate with 3 times the volume of 95% ethanol, and wash the precipitate with a certain a...

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Abstract

The invention discloses a decolorizing method for a Huping jujube polysaccharide solution. The decolorizing method concretely includes the steps that 1, peel and pit removing is performed on Huping jujubes, paste making is performed after the Huping jujubes are cut into slices, and a vacuum freeze drying technology is adopted for drying treatment to obtain Huping jujube powder; 2, a certain amount of jujube powder is weighed, and through the steps of extracting, concentrating, alcohol precipitation, alcohol washing and others, crude polysaccharides is obtained; 3, crude polysaccharides are redissolved in distilled water, three decolorizing agents including macroporous adsorption resin, active carbon and polyamide resin are added for decolorizing, and D900 type macroporous adsorption resin is sieved out to serve an ideal decolorizing agent; 4, crude polysaccharides are redissolved in a buffering solution, and through D900 type macroporous adsorption resin, decolorizing, concentrating and drying are performed to obtain Huping jujube polysaccharides, wherein the PH value of the buffering solution is 11-12. By the adoption of the decolorizing method, the Huping jujube crude polysaccharide solution is convenient and easy to decolorize, no harmful chemical substances are introduced, one-off decolorizing rate can reach 80-90%, the retention rate of polysaccharides can reach 80-90%, and deproteinization rate can also reach 30-40%. Resin can be recycled in a renewable mode, the requirements for the cost and equipment are low, and industrialized production of Huping jujube polysaccharides is facilitated.

Description

technical field [0001] The invention relates to a method for decolorizing jujube polysaccharide solution in pots and bottles, and belongs to the field of functional food biochemistry. Background technique [0002] Red dates are Rhamnaceae ( Rhamnaceae ) Jujube ( Zizyphus jujube Mill. ) The fruit of jujube tree ranks first in the world in terms of cultivation area and output in my country, and has a cultivation history of 4,000 years. It is also called "five ancient fruits" together with peach, plum, chestnut and apricot. Jujube is rich in nutrition, containing more than 50 kinds of chemical substances, rich in sugar, vitamins, amino acids, minerals, crude fiber and other nutrients. Its sugar content ranks first among all kinds of fruits. The sugar content of jujube is 60%~80%. It can be eaten or used as medicine, and has various nutritional and health functions. "Compendium of Materia Medica", "Materia Medica Seeking Truth", "Qi Min Yao Shu" and other books have long rec...

Claims

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Application Information

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IPC IPC(8): C08B37/00
Inventor 黄立新张耀雷张彩虹谢普军游凤
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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