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Method for improving utilization ratio of starch in corn hull

A corn husk and utilization rate technology, applied in the field of corn deep processing, can solve the problems of insufficient utilization, waste, starch residue, etc., and achieve the effect of sufficient hydrolysis degree, low starch residue, and low starch content

Inactive Publication Date: 2009-05-13
鲁洲生物科技(四川)有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can partially utilize the starch in the corn husk, the utilization is not sufficient, and there is still a large amount of starch residue in the waste, resulting in waste.

Method used

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  • Method for improving utilization ratio of starch in corn hull

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Effect test

Embodiment 1

[0020] Embodiment 1: a kind of method that improves the utilization rate of starch in corn husk, is raw material with the corn husk that obtains after washing and separating through high-pressure curved sieve in the corn deep processing process, and steps are as follows:

[0021] (1) Add corn husks to water at a ratio of 1:10, and at a temperature of 25° C., use a power of 5 kW for ultrasonic treatment for 20 minutes to obtain corn husk slurry;

[0022] (2) Adjust the pH value of the corn husk slurry prepared in step (1) to 5.5 with sodium carbonate, and then add a medium-temperature amylase for enzymatic hydrolysis. The action conditions of the medium-temperature amylase are: time 15min, temperature 65°C, enzyme concentration in the system 0.02ml / L, substrate concentration: 100g / L, to obtain enzymatic hydrolyzate of corn hulls;

[0023] (3) separating the corn bran and the feed liquid in the corn bran enzymatic hydrolysis solution prepared in step (2). The moisture content o...

Embodiment 2

[0024] Embodiment 2: a kind of method that improves the utilization rate of starch in the corn bran, is raw material with the corn bran that obtains after washing and separating through the high-pressure curved sieve in the deep processing of corn, and the steps are as follows:

[0025] (1) Add corn husks into water at a ratio of 1:8, and at a temperature of 30° C., use a power of 7 kW for ultrasonic treatment for 15 minutes to obtain corn husk slurry;

[0026] (2) Adjust the pH value of the corn husk slurry prepared in step (1) to 6.5 with sodium hydroxide, and then add mid-temperature amylase for enzymatic hydrolysis. The action conditions of the mid-temperature amylase are: time 20min, temperature 70°C, The concentration is 0.03ml / L, the substrate concentration is: 120g / L, and the enzymatic hydrolyzate of corn hulls is obtained;

[0027] (3) the corn bran in the corn bran enzymatic hydrolysis solution that step (2) is made is separated from feed liquid; The moisture of corn...

Embodiment 3

[0028] Embodiment 3: a kind of method that improves the utilization rate of starch in corn husk, is raw material with the corn husk that obtains after washing and separating through high-pressure curved sieve in the corn deep processing process, and steps are as follows:

[0029] (1) Add corn husks into water at a ratio of 1:6, and at a temperature of 35° C., use a power of 9 kW for ultrasonic treatment for 11 minutes to obtain corn husk slurry;

[0030] (2) Adjust the pH value of the corn husk slurry prepared in step (1) to 7.0 with sodium carbonate, and then add a medium-temperature amylase for enzymatic hydrolysis. The conditions for the action of the medium-temperature amylase are: time 25min, temperature 75°C, and enzyme concentration in the system 0.05ml / L, and substrate concentration: 150g / L, to obtain enzymatic hydrolyzate of corn hulls;

[0031] (3) the corn bran in the corn bran enzymatic hydrolysis liquid that step (2) is made is separated from feed liquid; The mois...

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Abstract

The invention relates to a method for improving utilization rate of starch in corn husks. The method uses ultrasonic treatment and assistant enzyme to wash the starch on the corn husks to improve reclaiming rate of the starch, and reduce production cost. The method achieves full utilization for corns; and the produced by-product, namely the corn husks have high xylose content, so the method is more favorable for subsequent production for extracting xylose from the corn husks, and has favorable economic benefit and social benefit.

Description

technical field [0001] The invention relates to a method for improving the utilization rate of starch in corn husks, in particular to a method for improving the recovery and utilization rate of starch by washing corn husks with ultrasonic waves and auxiliary enzymes, and belongs to the technical field of corn deep processing. Background technique [0002] In the process of corn deep processing, the corn is soaked, ground, and centrifuged to obtain corn hulls and slurry; the corn hulls are centrifugally separated and enter the high-pressure curved sieve to separate and clean the slurry, and then enter the squeeze dryer to remove part of the water after passing through the multi-stage curved sieve. Then enter the drying machine for drying; but the content of corn bran starch in this method is about 20%wt, which causes a lot of waste and is unfavorable for the development of enterprises. For example, the Chinese patent whose publication number is CN1966665 discloses a hydrolyza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/14
Inventor 刘长胜张杰刘培政牛继星
Owner 鲁洲生物科技(四川)有限公司
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