Method for producing jujube clarification juice

A technology for clarified juice and jujube juice, which is applied in the production of clarified jujube juice and the production of clarified jujube juice by resin adsorption method, to achieve the effects of increasing light transmittance, simple production process, and strong jujube fragrance

Inactive Publication Date: 2008-03-12
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As far as the inventor knows, red date concentrated juice, especially clarified red date concentrated juice, has not been reported in patents and documents

Method used

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  • Method for producing jujube clarification juice

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Effect test

Embodiment 1

[0053] 1. Preparation of Jujube Pulp

[0054] Wash the red dates, add 5 times the weight of the red dates in water, heat to 50°C in a jacketed pot, soak for 1 hour, then heat to 100°C, cook for 20 minutes, cool to 50°C, and then beat in a beating machine to make. The jujube pulp is obtained, and the mesh aperture of the beater is 1 mm.

[0055] 2. Enzymatic hydrolysis

[0056] Put it in a jacketed pot, add 0.01% pectinase by weight of jujube juice, enzymolysis for 2 hours, and then squeeze the juice with a bag-type juicer to obtain 15% jujube juice.

[0057] 3. Chitosan Clarification

[0058] Put red date juice in a jacketed pot, add 3.0% chitosan solution by weight of red date juice under stirring (chitosan is dissolved with 1% citric acid solution to make 1% chitosan solution), 40 ° C Keep the temperature for 1 hour, when the bottom of the jacketed pot is precipitated, filter the juice with a 300-mesh sieve, and then use a centrifugal filter (7500 rpm) to remove the parti...

Embodiment 2

[0069] 1. Preparation of Jujube Pulp

[0070] Clean the red dates, add 3 times the weight of the red dates in water, heat them to 50°C in a jacketed pot, soak them for 1 hour, then heat them to 100°C, cook for 20 minutes, cool to 50°C, and then beat them in a beating machine to make them. The jujube pulp is obtained, and the mesh aperture of the beater is 1 mm.

[0071] 2. Enzymatic hydrolysis

[0072] The red jujube juice was placed in a jacketed pot, 0.05% pectinase was added, and enzymatic hydrolysis was carried out for 2 hours, and then the juice was squeezed with a bag-type juicer to obtain 16% jujube juice.

[0073] 3. Chitosan Clarification

[0074] The jujube juice prepared in step 2 is placed in a jacketed pot, and a chitosan solution of 6.0% by weight of jujube juice is added under stirring (chitosan is dissolved in a 1% citric acid solution in advance to make 1% chitosan. solution), kept at 40 °C for 1 hour, and when there was precipitation at the bottom of the j...

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Abstract

The present invention discloses a method for producing jujube clarifying juice, including the jujube pulp preparation, the jujube pulp enzymatic hydrohysis liquid, the clarification of the enzymatic hydrohysis liquid and the ultra-filtration. Total phenols and proteins of the jujube juice obtained from the ultra-filtration are removed by macroporous adsorption resins. The macroporous adsorption resins can adopt LSA-800 and/or LX-400 adsorption resins. The polysaccharide content of the jujubes obtained through the method achieves above 40percent. Without toxic and harmful organic solvents contained, the whole extraction and separation process has the advantages of innocuity safety and little time consumption. And the whole course green extraction is realized.

Description

technical field [0001] The invention belongs to the field of food science and engineering, in particular to a method for producing clarified red jujube juice, in particular to a method for producing clarified red jujube juice by using a resin adsorption method. Background technique [0002] Red jujube, also known as jujube, is native to my country and belongs to the fruit of the rhamnaceae plant. It has a cultivation history of more than 3,000 years in my country. Jujube is rich in nutrients. In addition to protein, sugar, fatty acid, vitamins, and trace elements, it also contains flavonoids, betulinic acid, oleanolic acid, maslinic acid, catechin acid, p-coumaroyl ester, jujube Saponin I, II, III and jujube seed saponin B and other medicinal components, so it has high medical and health value. In my country, red dates have been used to treat diseases for a long time. As early as in the "Shen Nong's Materia Medica", red dates were listed as top-grade, with the effect of ton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L2/74A23L2/06A23L2/84A23L2/52
Inventor 曹炜王毕妮曹艳萍
Owner NORTHWEST UNIV(CN)
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