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Five-removal process of linseed crude oil

A technology for linseed oil and seed hair, which is applied in the field of vegetable oil refining, can solve the problems of affecting the flavor and properties of linseed oil, high moisture content and impurity content, and unfavorable industrial production, and achieves good product quality, easy preservation, and no coke. bitter effect

Pending Publication Date: 2020-08-18
上海允文食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Flaxseed oil is mostly extracted by physical pressing or chemical extraction, but the extracted crude oil contains a lot of impurities, which affect the flavor and properties of linseed oil, greatly affect the quality of the product, and then affect the sales of the product
[0004] In order to better improve product quality, most of the current refining methods of linseed crude oil are only deacidification and decolorization, or only deacidification and deodorization, and the production cost is low, but the finished product is not refined enough and the quality is not good enough. At the same time, after refining , the moisture content and impurity content are high, and the loss rate of linolenic acid is also high, so it is very unfavorable for industrial production

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] The present embodiment provides a kind of five-removal process of linseed crude oil, and described process method comprises:

[0030] (1) Deacidification: at 80°C, mix raw linseed oil crude oil with sodium hydroxide aqueous solution, centrifuge, take the upper liquid to obtain deacidified crude oil; wherein, the added amount of sodium hydroxide aqueous solution is 0.5% by mass , the mass concentration of sodium hydroxide aqueous solution is 2%;

[0031] (2) Degumming: at 80°C, the deacidified crude oil obtained in step (1) is washed with water and centrifuged, and the obtained upper layer liquid is washed with water again and then centrifuged to obtain degummed crude oil; wherein, the water consumption for each washing is greater than that for degumming 6 times the volume of sour hair oil;

[0032] (3) Decolorization: at 100° C., add activated carbon to the degummed crude oil obtained in step (2) and stir for 0. hour, filter and take the filtrate to obtain decolorized ...

Embodiment 2

[0036] The present embodiment provides a kind of five-removal process of linseed crude oil, and described process method comprises:

[0037] (1) Deacidification: at 80°C, mix raw linseed oil crude oil with sodium hydroxide aqueous solution, centrifuge, take the upper liquid to obtain deacidified crude oil; wherein, the added amount of sodium hydroxide aqueous solution is 2% by mass , the mass concentration of sodium hydroxide aqueous solution is 5%;

[0038] (2) Degumming: at 80°C, the deacidified crude oil obtained in step (1) is washed with water and centrifuged, and the obtained upper layer liquid is washed with water again and then centrifuged to obtain degummed crude oil; wherein, the water consumption for each washing is greater than that for degumming 7 times the volume of sour hair oil;

[0039] (3) Decolorization: at 120° C., add activated carbon to the degummed crude oil obtained in step (2) and stir for 1 hour, and take the filtrate after filtering to obtain decolo...

Embodiment 3

[0043] The present embodiment provides a kind of five-removal process of linseed crude oil, and described process method comprises:

[0044] (1) Deacidification: at 80°C, mix raw linseed crude oil with sodium hydroxide aqueous solution, centrifuge, take the upper liquid to obtain deacidified crude oil; wherein, the added amount of sodium hydroxide aqueous solution is 1% by mass , the mass concentration of sodium hydroxide aqueous solution is 3%;

[0045] (2) Degumming: at 80°C, the deacidified crude oil obtained in step (1) is washed with water and centrifuged, and the obtained upper layer liquid is washed with water again and then centrifuged to obtain degummed crude oil; wherein, the water consumption for each washing is greater than that for degumming 8 times the volume of sour hair oil;

[0046] (3) Decolorization: at 110°C, add activated carbon to the degummed crude oil obtained in step (2) and stir for 0.8 hours, filter and take the filtrate to obtain decolorized crude ...

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Abstract

The invention relates to a five-removal process of linseed crude oil. The process method comprises five steps of deacidification, degumming, decoloration, deodorization and dewaxing. Compared with theprior art, the five-removal process for the linseed crude oil has the following beneficial effects: (1) the five-removal process for the linseed crude oil is simple in process, convenient to operate,low in process cost, high in refining yield, good in product quality and suitable for industrial production; and (2) the five-removal process of the linseed crude oil is utilized; the refining yieldof refined linseed oil is higher than 98.97%, the loss rate of linolenic acid is lower than 0.55%, the acid value is lower than 0.11 KOH mg / g, the peroxide value is lower than 0.45 mmol / kg, the moisture content is 0.02%, and the impurity content is 0.03%.

Description

technical field [0001] The invention belongs to the technical field of vegetable oil refining, and relates to a refining treatment process of linseed oil, in particular to a five-removal process of linseed crude oil. Background technique [0002] Flaxseed oil is made from flaxseed, of which the oil content in flaxseed is as high as 30% to 35%, and linolenic acid accounts for 45% to 60% of its oil content. Linoleic acid is a functional active substance. It has high utilization value in various health foods. [0003] Linseed oil is mostly extracted by physical pressing or chemical extraction, but the extracted crude oil contains a lot of impurities, which affect the flavor and properties of linseed oil, greatly affect the quality of the product, and then affect the sales of the product. [0004] In order to better improve product quality, most of the current refining methods of linseed crude oil are only deacidification and decolorization, or only deacidification and deodoriz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
CPCC11B3/001
Inventor 胡春华
Owner 上海允文食品有限公司
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