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Method for continuous extraction of corn oil, alcohol soluble protein and yellow pigment from corn gluten meal

The technology of zein and corn yellow powder is applied in the fields of yellow pigment, continuous extraction of corn oil and gliadin, which can solve the problems of no corn yellow powder utilization, waste of resources and the like, achieve easy industrial production, improve economic benefits and simple process Effect

Inactive Publication Date: 2015-09-09
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Corn gluten meal (corn gluten meal) is a by-product of wet production of corn starch, containing about 60% protein, of which zein accounts for about 65% of protein, followed by pigments, oils, etc. Most of our country produces starch Enterprises sell corn yellow powder as cheap feed, and some companies do not make any use of corn yellow powder when producing starch, and discharge it with waste liquid, resulting in a waste of resources

Method used

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  • Method for continuous extraction of corn oil, alcohol soluble protein and yellow pigment from corn gluten meal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Extract corn oil

[0027] Crush 10g corn yellow powder to 120 mesh, soak it in petroleum ether with a material-to-liquid ratio of 1:10 for 8 hours, so that the corn oil is extracted by petroleum ether, filtered, and the corn yellow powder is ready for use. The petroleum ether and corn are evaporated under reduced pressure at 50°C. Oil is separated and petroleum ether is recovered to obtain corn oil with a yield of 11.32%.

[0028] 2. Extract zein

[0029] The corn yellow powder after oil extraction is added to 4% sodium chloride liquid for salt washing, the ratio of material to liquid is 1:8, stirring for 15 minutes, centrifugation, the salt washing liquid is recovered, concentrated, and dried at 50°C to obtain feed salt. 70% ethanol solution was added to the solid obtained after centrifugation, with a material-to-liquid ratio of 1:12, heated in a water bath at 40°C, stirred for 20min, filtered, and the obtained solid was ready for use. The supernatant was concentrated und...

Embodiment 2

[0033] 1. Extract corn oil

[0034] Crush 10g corn yellow powder to 150 mesh, soak it in petroleum ether with a material-to-liquid ratio of 1:12 for 6 hours, so that the corn oil is extracted by petroleum ether, filtered, and the corn yellow powder is ready for use. The petroleum ether and corn are evaporated under reduced pressure at 50°C. Oil is separated and petroleum ether is recovered to obtain corn oil with a yield of 11.97%.

[0035] 2. Extract zein

[0036] The corn yellow powder after oil extraction is added to 4% sodium chloride liquid for salt washing, the material-to-liquid ratio is 1:10, stirring for 20 minutes, centrifugation, the salt washing liquid is recovered, concentrated, and dried at 60°C to obtain feed salt. Add 80% ethanol solution to the solid obtained after centrifugation, with a material-to-liquid ratio of 1:10, heat in a water bath at 35°C, stir for 30min, and filter. The obtained solid is ready for use. The supernatant is concentrated under reduced pressu...

Embodiment 3

[0040] 1. Extract corn oil

[0041] Crush 10g of corn yellow powder to 100 mesh, soak it in petroleum ether with a material-to-liquid ratio of 1:8, extract the corn oil by petroleum ether for 9 hours, filter, and evaporate the corn yellow powder for use at 50°C under reduced pressure. Separate from corn oil and recover petroleum ether to obtain corn oil with a yield of 10.65%.

[0042] 2. Extract zein

[0043] The corn yellow powder after oil extraction is added to 4% sodium chloride liquid for salt washing, the material-to-liquid ratio is 1:12, stirring for 25 minutes, centrifugation, the salt washing liquid is recovered, concentrated, and dried at 70°C to obtain feed salt. Add 60% ethanol solution to the solid obtained after centrifugation with a material-to-liquid ratio of 1:9. Heat in a water bath at 30°C, stir for 40min, and filter. The obtained solid is ready for use. The supernatant is concentrated under reduced pressure at 50°C to recover ethanol. The solids evaporated unde...

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Abstract

Relating to the food industrial field, the invention discloses a method of continuously extracting corn oil, alcohol soluble protein and yellow pigment with corn gluten meal. The method includes: corn gluten meal crushing, petroleum ether extraction, filtration, concentration, salt washing, centrifugation, ethanol extraction, stirring, filtering and drying. Corn oil, alcohol soluble protein and yellow pigment are extracted continuously by a simple process. The method is simple and is convenient to operate, significantly improves the added value of corn gluten meal, compared with single product preparation, the method provided by the invention has the advantages of low production cost and easiness in industrial production, and is conducive to comprehensive development and utilization of corn gluten meal and improvement of economic benefits.

Description

Technical field [0001] The invention relates to the technical field of deep processing of corn yellow powder, in particular to a method for continuously extracting corn oil, gliadin and yellow pigment from corn yellow powder. Background technique [0002] Corn gluten meal (corn gluten meal) is a by-product produced when wet-process corn starch is produced. It contains about 60% protein, of which zein accounts for about 65% of protein, followed by pigments, oils, etc. Most of my country produces starch Companies sell corn ox meal as cheap feed, and some companies do not make any use of corn ox meal when producing starch, which is discharged with waste liquid, resulting in a waste of resources. At present, corn yellow powder has attracted people’s attention and attention, and has been developed and utilized. For example, patent CN102532294 A discloses a method for extracting gliadin from corn yellow powder, and patent CN 101280121 A discloses the use of microwave-ultrasonic extracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07K14/425C07K1/36C07K1/14C07K1/30C11B1/00C11B1/04C09B61/00A23K1/00
CPCC07K14/425C09B61/00C11B1/04C11B1/10
Inventor 李桂娟程桂茹张玉秀杨阳鲁斌
Owner CHANGCHUN UNIV OF TECH
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