Ultrasonic-assisted corn protein extraction method

A corn gluten and corn technology, applied in the field of corn gluten extraction technology, can solve the problems of high protein yield and purity, low extraction rate and purity, low solvent consumption, etc., so as to shorten the extraction time, improve the extraction rate and purity, The effect of reducing energy consumption
CN112209998AActive Publication Date: 2021-01-12GUOTOU BIO TECH INVESTMENT CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUOTOU BIO TECH INVESTMENT CO LTD
Publication Date
2021-01-12

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Abstract

The invention relates to a corn protein extraction process, in particular to an ultrasonic-assisted corn protein extraction method. The method comprises the following steps: step 1, carrying out firstsolid-liquid separation on corn fermented mash, collecting vinasse solids, adding an extracting solution containing an organic solvent to enable the pH range of the system to be 7-11, and then addinga reducing agent; step 2, carrying out ultrasonic treatment on the system; step 3, after ultrasonic treatment, carrying out second solid-liquid separation to obtain an extracting solution rich in corn protein, and carrying out reduced pressure distillation to recover part of the organic solvent to obtain a concentrated solution; and step 4, adjusting the pH value of the concentrated solution to aprotein isoelectric point, collecting precipitated target protein, washing the target protein to be neutral, and performing drying to obtain a corn protein finished product. The method can be used for extracting alcohol-soluble protein and glutelin in the corn fermented mash at the same time, and is low in solvent consumption, short in time and high in protein yield and purity.
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Description

technical field

[0001] The invention relates to a process for extracting corn protein, in particular to a method for ultrasonically assisted extraction of corn protein. Background technique

[0002] Corn is one of the three most widely distributed food crops in the world. The planting area is second only to wheat and rice. my country's average annual corn production and consumption ranks second in the world, second only to the United States. With the development of the corn alcohol industry, a large amount of by-product corn fermented mash will be produced, but it is easy to deteriorate and not easy to store for a long time. If it is not treated effectively, it will not only pollute the environment, but also cause a great waste of resources.

[0003] At present, corn fermented mash is mostly used in the preparation of animal feed, for example, as a by-product of fuel ethanol, distiller's dried grains and solubles (DDGS), which use corn as raw material, are obtained after liq...

Claims

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