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Method for extracting jujube juice through pectin enzymolysis assisted with malt

A technology of pectinase and jujube juice, which is applied in the field of malt-assisted pectin enzymatic hydrolysis to extract jujube juice, can solve the problems that centrifugal separation is difficult to work, it is difficult to separate jujube juice, and it cannot be processed in time, so as to reduce the viscosity of jujube juice and reduce the The effect of fruit farmers' loss and improvement of utilization rate

Active Publication Date: 2017-10-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the method of "hot water extraction + pectin enzymatic hydrolysis" is adopted. Under heating conditions, jujube absorbs water and swells, and the broken skin and pulp flow out. Large, centrifugal separation is difficult to work, and it is difficult to separate jujube juice by pressing, and a large amount of methanol will be produced in the process of pectin hydrolysis, which is not good for human health; Jujube falls to the ground, and often cannot be processed in time. The rot will be used as fertilizer in the next year, causing great losses to farmers. In order to reduce the waste of resources, the timely treatment of fallen jujube and other foreign dates is a problem that must be paid attention to in the deep processing of jujube.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The jujube juice is prepared by using unripe fresh dates that fall due to climate, and the specific process is as follows:

[0032] Step 1, washing and drying the waited jujubes, and naturally cooling to room temperature to obtain spare dates.

[0033] Step 2, taking malt and crushing the malt to obtain 20-mesh and 80-mesh malt powder respectively.

[0034] Step 3, take 10kg of spare jujube, mix it with 30kg of pure water, then heat it to 90°C, keep it warm for 15min, and then crush it to obtain the mixture A.

[0035] Step 4: Cool the mixture A to 55°C, add 12g of pectinase, stir evenly, and keep it at 50°C for 8 hours to obtain jujube enzymatic hydrolysis solution.

[0036] Step 5: Take 10 kg of jujube enzymatic hydrolyzate, add 0.2 kg of 80-mesh malt powder to the jujube enzymatic hydrolyzate, stir evenly, incubate at 70° C. for 6 hours, and separate to obtain jujube juice stock solution.

[0037] Step 6: Take 10kg of jujube juice stock solution, adjust the tempera...

Embodiment 2

[0040] The jujube juice is prepared by using unripe fresh dates blown off by strong winds. The specific process is:

[0041] Step 1, washing and drying the waited jujubes, and naturally cooling to room temperature to obtain spare dates.

[0042] Step 2, taking malt and crushing the malt to obtain 20-mesh and 100-mesh malt powder respectively.

[0043] Step 3, take 10kg of spare jujube, mix it with 40kg of pure water, then heat it to 95°C, keep it warm for 15min, and then crush it to obtain the mixture A.

[0044] Step 4: Cool the mixed solution A to 55°C, add 40g of pectinase, stir evenly, and keep it at 50°C for 10 hours to obtain the jujube enzymatic hydrolysis solution.

[0045] Step 5: Take 10 kg of jujube enzymatic hydrolyzate, add 0.2 kg of 100-mesh malt powder to the jujube enzymatic hydrolyzate, stir evenly, incubate at 72° C. for 6 hours, and separate to obtain jujube juice stock solution.

[0046] Step 6: Take 10kg of the jujube juice stock solution, adjust the tem...

Embodiment 3

[0049] The jujube juice is prepared by using unripe fresh jujubes that fall due to artificial reasons, and the specific process is:

[0050] Step 1, washing and drying the waited jujubes, and naturally cooling to room temperature to obtain spare dates.

[0051] Step 2, taking malt and crushing the malt to obtain 20-mesh and 90-mesh malt powder respectively.

[0052]Step 3, take 10kg of spare jujube, mix it with 35kg of pure water, then heat it to 93°C, keep it warm for 15min, and then crush it to obtain mixed solution A.

[0053] Step 4: Cool the mixed solution A to 55°C, add 20g of pectinase, stir evenly, and keep it at 53°C for 9 hours to obtain jujube enzymatic hydrolysis solution.

[0054] Step 5: Take 10 kg of jujube enzymatic hydrolyzate, add 0.2 kg of 90-mesh malt powder to the jujube enzymatic hydrolyzate, stir evenly, incubate at 71° C. for 6 hours, and separate to obtain jujube juice stock solution.

[0055] Step 6: Take 10kg of jujube juice stock solution, adjust ...

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PUM

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Abstract

The invention discloses a method for extracting jujube juice through pectin enzymolysis assisted with malt. According to the method, substandard jujubes are used as raw materials, through pectin enzymolysis, malt flour with different particle size is used for assisting in extraction of juice of pectinase, volatilization is performed under different temperatures to remove methanol, and finally, the jujube juice is obtained. According to the method, the substandard jujubes are used as the raw materials, and the enzymolysis sequence is reasonably arrayed, so that massive methanol in the extraction process of the pectinase jujube juice is removed, the utilization rate of the substandard is increased, and the loss of fruit growers is reduced.

Description

technical field [0001] The invention belongs to the technical field of jujube juice extraction; in particular, it relates to a method for extracting jujube juice with malt-assisted pectin enzymatic hydrolysis. Background technique [0002] Jujube is a special product of our country, rich in nutrition, and is the king of all kinds of fruits. The planting amount and annual output are more than 95% of the world's total. At present, jujube is mostly used for fresh food and the processing of simple craft products such as candied dates and wine jujubes. Glue-like substances, it is more difficult to extract juice. Generally, the method of "hot water extraction + pectin enzymatic hydrolysis" is adopted. Under heating conditions, jujube absorbs water and swells, and the broken skin and pulp flow out. Large, centrifugal separation is difficult to work, and it is difficult to separate jujube juice by pressing, and a large amount of methanol will be produced in the process of pectin h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L2/04A23L2/56A23L2/84A23L2/70A23L2/72A23L33/10
CPCA23L2/04A23L2/56A23L2/70A23L2/72A23L2/84A23V2002/00A23L33/10A23V2200/30
Inventor 杨辉刘芳高红芳蒲鹏飞杜娇娇彭任芳
Owner SHAANXI UNIV OF SCI & TECH
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