Lactic-acid-and-hydrogen-peroxide-coordination-soaking extracting method for corn starch

A technology of hydrogen peroxide and corn starch, which is applied in the field of corn starch extraction, can solve the problems of high process requirements, high cost, and low cost, and achieve the effects of reducing environmental pollution, reducing corrosion, and reducing deposition

Active Publication Date: 2017-03-22
BIOLOGY INST OF SHANDONG ACAD OF SCI
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of high process requirements and high cost in the method of lactic acid and enzyme synergistic soaking and extraction of cornstarch in the prior art, this application discloses a low-cost and high extraction rate lactic acid and hydrogen peroxide synergistic soaking extraction cornstarch method

Method used

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  • Lactic-acid-and-hydrogen-peroxide-coordination-soaking extracting method for corn starch
  • Lactic-acid-and-hydrogen-peroxide-coordination-soaking extracting method for corn starch
  • Lactic-acid-and-hydrogen-peroxide-coordination-soaking extracting method for corn starch

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Experimental program
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Effect test

Embodiment 1

[0037] 1 Materials and methods

[0038] 1.1 Materials and reagents

[0039] Corn: water content 12.6%, provided by the corn starch production workshop of Linghua Group Co., Ltd. (Jining, Shandong); hydrogen peroxide; other reagents are analytically pure.

[0040] 1.2 Instruments and equipment

[0041] YP201N electronic balance (Shanghai Jinghai Instrument Co., Ltd.), 303A2 electric heating constant temperature incubator (Nantong Hongda Experimental Instrument Co., Ltd.), DHG series electric heating constant temperature blast drying oven (Shanghai Xinmiao Medical Instrument Manufacturing Co., Ltd.), Western kitchen multi-functional crushing Machine (Boou Hardware Factory), HHS constant temperature water bath (Jiangsu Guosheng Experimental Instrument Factory), LXJ64-01 centrifuge (Hebei Wuqiao Electric Machinery Factory).

[0042] 1.3 Test method

[0043] 1.3.1 Lactic acid and hydrogen peroxide synergistic soaking process

[0044] Lactic acid and hydrogen peroxide synergisti...

Embodiment 2

[0050] ① Accurately weigh 40g of corn, under the conditions of initial lactic acid concentration of 0.6%, soaking in lactic acid for 16 hours, hydrogen peroxide for 20 hours, and normal temperature, adjust the pH to 8 and then soak. Add hydrogen peroxide to the soaking solution at a hydrogen peroxide level of 3%. The effect of the amount of hydrogen peroxide on the yield of corn starch is as follows: figure 1 As shown, it can be seen that the yield of starch increases continuously with the increase of the amount of hydrogen peroxide, and when the amount of hydrogen peroxide increases to 2%, the yield of corn starch decreases.

[0051] ② Accurately weigh 40g of corn, soak it under the conditions of initial lactic acid concentration of 0.6%, soaking in lactic acid for 16 hours, hydrogen peroxide action time of 20 hours, and normal temperature, and then use 0.5%, 1%, 1.5%, 2%, and 3% hydrogen peroxide respectively. Add hydrogen peroxide to the soaking solution. The effect of th...

Embodiment 3

[0057] (1) Effect of initial lactic acid concentration on starch yield

[0058] Accurately weigh 40g of corn, soak in lactic acid for 16 hours, and soak at a temperature of 50±2°C. Concentration Add lactic acid to the soaking liquid, the concentration of hydrogen peroxide is 2%, the soaking conditions are the same as in Example 2, ④, the weight ratio of corn to lactic acid solution and hydrogen peroxide is 1:1.5 respectively. The effect of initial lactic acid concentration on the yield of corn starch is as follows: Figure 6 It was shown that with the increase of the initial lactic acid concentration, the starch yield continued to increase, and when the initial lactic acid concentration increased to 0.6%, the corn starch yield began to decrease instead. This is because lactic acid can promote the softening and swelling of corn protein, maintain magnesium ions and calcium ions in the solution, accelerate water entry into corn kernels, and promote the separation of starch and p...

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Abstract

The invention relates to the technical field of corn starch extracting, in particular to a lactic-acid-and-hydrogen-peroxide-coordination-soaked extracting method for corn starch. The method includes the steps that corn kernels are thrown into a soaking tank, and lactic acid is added into the soaking tank for soaking; soaked corn is subjected to coarse crushing, the corn kernels are crushed into 6 sections to 8 sections, then a hydrogen peroxide solution is added, the product is soaked, then the product is subjected to germ separation, fine grinding, pulp separation, centrifugal separation and drying, and the starch is obtained. According to the lactic-acid-and-hydrogen-peroxide-coordination-soaked extracting method, the hydrogen peroxide solution is added into the soaking tank after once soaking, sulphurous acid is avoided, environment pollution is reduced, and meanwhile the corrosion performance of a device is reduced; the investment of the corn soaking tank is reduced for production expanding, the production environment of a workshop is also greatly improved, the corn starch yield is increased to be about 67% from about 56% obtained through pure sulphurous acid soaking, and remarkable economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of cornstarch extraction, in particular to a method for extracting cornstarch by synergistic soaking with lactic acid and hydrogen peroxide. Background technique [0002] my country is the world's largest producer of starch, and its starch output is second only to the United States, ranking second in the world, of which corn starch accounts for more than 80% of the entire starch production. Corn starch has a wide range of uses, in addition to edible and processed food, it is more widely used in textile, paper, pharmaceutical, petroleum, fermentation and chemical industries. [0003] At present, wet milling process is mostly used in China to produce corn starch. The corn soaking process is the most important process in the starch processing process. The soaking effect and the length of time can directly affect the quality, yield and cost of corn starch finished products and other by-products. The tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/00C08B30/02C08B30/04
CPCC08B30/00C08B30/02C08B30/044
Inventor 刘庆艾史建国马耀宏杨俊慧孟庆军杨艳郑岚蔡雷马恒
Owner BIOLOGY INST OF SHANDONG ACAD OF SCI
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