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Extraction method of cottonseed oil

An extraction method and cottonseed oil technology, which are applied in the production of fat/fat and fat production, can solve the problems affecting the draining effect of the extractor, the leaching effect, the insufficient contact between the material and the solvent, and the continuous production. To achieve the effect of enhanced leaching effect, low cost and less loss

Active Publication Date: 2016-10-26
新疆晨光生物科技股份有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Extraction methods such as immersion and spraying are often used in the production of oil extraction by leaching. Due to the small amount of oil extraction by immersion and the low continuous productivity, etc., ring leachers and towline leachers are mostly used now. Spray extraction; this type of extractor has the advantages of continuous production, large processing capacity, and small footprint, but it also has high requirements for material pretreatment, and high material fragmentation will affect the draining effect and leaching effect of the extractor.
[0003] Chinese patent application 201410673975.0 provides a process for extracting vegetable oil by water enzymatic method. The oil-water mixture produced by this process is easy to form an emulsion, which is not easy to separate and affects the oil yield; Chinese patent application 201310005772.X provides a protease enzymatic hydrolysis of vegetable oil A method for leaching vegetable oil from raw materials. In this method, after the vegetable oil is processed by cold pressing, the protein of the pressed oil is hydrolyzed with protease, and then the production method of 6# solvent leaching is carried out. The process of this method is relatively complicated and the production line is long; Chinese patent Application 200510124534.6 provides a one-step method for producing dephenolized cotton protein, which softens cotton kernels and contacts them with 6# solvent oil and methanol at the same time to produce dephenolized cottonseed protein and cottonseed oil. Because two solvents are used, the solvent recovery process More complex; "China Oils and Fats" 2009,34(12) "Technology Research on Low-temperature Pressed Cake of Cotton Kernel Extracted with 95% Ethanol" introduced the best production of cottonseed meal for degreasing and gossypol after low-temperature pressing with 95% ethanol extraction process conditions, the extraction time of this method is longer, and the removal effect of gossypol is not good
[0004] In a word, when oil is extracted by aqueous enzymatic method, the extract is prone to emulsion, which is not easy to separate; in the existing technology, the production line using the combination of enzymatic hydrolysis and solvent leaching is longer and the process is more complicated; the material particles in the production leaching process are small and easy to separate. Cause problems such as insufficient contact between materials and solvents

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  • Extraction method of cottonseed oil

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: The specific process of the extraction method of this cottonseed oil is as follows.

[0023] 1T cotton kernels are crushed at low temperature to 30-80 mesh, softened and then transported to the leaching tank group. Add 2% mixed enzyme and 40% ethanol solution according to the material-to-liquid ratio of 1:2, adjust the pH of the solution to be neutral, soak at 40°C for 3 hours, and then transport the material to a centrifuge for centrifugation. The output of the centrifuge is subjected to 7-stage solid-liquid countercurrent leaching. The ratio of solid to liquid in each stage is 1:2, the soaking temperature is 30°C, and the soaking time is 5 minutes. Finally, it is used as the first-level soaking solution, and the last-level soaking is added with ethanol at a material-to-liquid ratio of 1:2 to an ethanol concentration of 40%. After the final stage of centrifugation, the output of the centrifuge enters the low-temperature drying equipment to dry and produc...

Embodiment 2

[0025] Embodiment 2: the extraction method of this cottonseed oil The specific process is as follows.

[0026] 1T cotton kernels are crushed at low temperature to 30-80 mesh, softened and then transported to the leaching tank group. Add 3.5% mixed enzyme and 50% ethanol according to the ratio of solid to liquid 1:3.5, adjust the pH value of the solution to be neutral, treat the material at 50°C for 4 hours, and then transfer the material to a centrifuge for centrifugation. The output of the centrifuge is subjected to 8-stage solid-liquid countercurrent leaching. The ratio of solid to liquid in each stage is 1:3.5, the soaking temperature is 40°C, and the soaking time is 13 minutes. Afterwards, it is used as the first-level soaking solution, and ethanol is added to the ethanol concentration of 50% according to the material-to-liquid ratio of 1:3.5 for the last level of soaking. After the final stage of centrifugation, the output of the centrifuge enters the low-temperature dry...

Embodiment 3

[0028] Embodiment 3: the extraction method of this cottonseed oil The specific process is as follows.

[0029] 1T cotton kernels are crushed at low temperature to 30-80 mesh, softened and then transported to the leaching tank group. Add 5% mixed enzyme and 60% ethanol at a material-to-liquid ratio of 1:5 to adjust the pH value of the solution to neutrality. After 5 hours of treatment at 60°C, the material is transported to a centrifuge for centrifugation. The output of the centrifuge is subjected to 10 stages of solid-liquid countercurrent leaching. The ratio of solid to liquid in each stage is 1:5, the soaking temperature is 50°C, and the soaking time is 20 minutes. Finally, it is used as the first-level soaking solution, and the last-level soaking is added with ethanol at a material-to-liquid ratio of 1:5 to an ethanol concentration of 60%. After the final stage of centrifugation, the output of the centrifuge enters the low-temperature drying equipment to dry and produce fi...

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Abstract

The invention discloses an extraction method of cottonseed oil. According to the extraction method, cottonseeds are crushed and softened; the crushed and softened cottonseeds are immersed in mixed liquor of mixed enzyme and an ethanol solution, wherein the mixed enzyme is trypsin and cellulase; after separation, a liquid material and a solid material are obtained; the solid material undergoes several stages of solid-liquid countercurrent leaching by the use of an ethanol solution; and a leachate obtained after each stage of separation and the liquid material are treated to obtain cottonseed oil. By crushing and softening the material firstly, part of cell structures can be damaged and specific surface area of the raw material can be increased, contact probability between the mixed enzyme and cells, etc. is raised, and leaching time is shortened; the mixed enzyme is a mixture of protease and cellulase system and has large activity in the presence of ethanol, and cellulase can decompose plant cellulose to produce ethanol so as to increase ethanol concentration; with the mixed enzyme and ethanol promoting each other, the leaching effect is enhanced, and yield of cottonseed oil is increased; and by enzymolysis treatment of cottonseed meal with the mixed enzyme, hydroxide potassium solubility of cottonseed meal can be enhanced, and protein digestibility can be raised.

Description

technical field [0001] The invention relates to an extraction process, in particular to an extraction method of cottonseed oil. Background technique [0002] In the process of vegetable oil production, pressing and leaching methods are often used to extract oil. Oil extraction by leaching has the characteristics of low residual oil in meal, good quality of meal, low production cost and suitable for large-scale production. Extraction methods such as immersion and spraying are often used in the production of oil extraction by leaching. Due to the small amount of oil extraction by immersion and the low continuous productivity, etc., ring leachers and towline leachers are mostly used now. Spray extraction; this type of extractor has the advantages of continuous production, large processing capacity, and small footprint, but it also has high requirements for material pretreatment, and high material fragmentation will affect the draining effect and leaching effect of the extracto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/02C11B1/04C11B1/10
CPCC11B1/025C11B1/04C11B1/10
Inventor 朱丹丹田令善张亚辉王成涛
Owner 新疆晨光生物科技股份有限公司