Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for removing pigment and wax in corn oil at same time

A corn oil, dewaxing technology, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of reducing the edible quality and nutritional value of oil, affecting the color and transparency, smell and taste of edible oil, etc.

Inactive Publication Date: 2016-05-25
NORTHEAST AGRICULTURAL UNIVERSITY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the prolongation of time, the crystal grains of the wax gradually aggregate and become a suspension, which affects the color and transparency of the edible oil, and makes the taste and taste worse, thereby reducing the edible quality and nutritional value of the oil.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0005] Specific embodiment one: a kind of method of simultaneously removing pigment and wax in corn oil realizes through the following steps:

[0006] Step 1: Take a certain amount of alkali-refined deacidified corn oil in the reaction kettle, adjust the vacuum degree of the decolorization tank to 0.095MPa, and add 0.5%, 1%, 1.5%, 2%, 2.5% (w / w) of activated clay Oil weight), stirring speed 60r / min, decolorization temperature 40, 45, 50, 55, 60°C, decolorization time 12, 18, 24, 30, 36h;

[0007] Step 2: The decolorized corn oil does not remove activated clay, slowly cools at a stirring speed of 12r / min, grows crystals at a crystal growth temperature of 10°C and a crystal growth time of 16 hours, and measures the color of corn oil and freezing tests.

specific Embodiment approach 2

[0008] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, different corn oil decolorization temperatures of 45, 50, and 55° C. are selected to measure the color of corn oil and the freezing test. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step one, different corn oil decolorization times of 18, 24, and 30 h are selected to measure the corn oil color and freeze test. Other steps are the same as in the first embodiment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for removing pigment and wax in corn oil at the same time. According to the method, specifically, under low temperature and vacuum conditions, activated clay is utilized for adsorbing the pigment in grease, the saturated clay after adsorption serves as a crystal nucleus, the wax in the grease is crystallized by means of cooling, the purpose of removing the pigment and the wax in the grease at the same time is achieved, a yellow value of the color of the obtained corn grease is 18, a red value of the color of the obtained corn grease is 1.9, and the grease after freezing tests is clear and transparent. The method has the advantages that on the low-temperature condition, tocopherol, beta-carotene and the like can not be decomposed easily, and the produced one-level grease is not prone to color reversion; meanwhile, the decoloration process and the dewaxing process are combined into one working procedure, and therefore production cost is reduced.

Description

technical field [0001] The invention relates to a method for oil processing, in particular to a method for directly dewaxing after low-temperature long-term decolorization. Background technique [0002] The pigments in corn oil can be roughly divided into two categories: one is chlorophyll, which is a derivative of chlorin; the other is carotenoids, both of which are insoluble in water, but soluble in oil and Therefore, in the process of oil preparation, the pigment is produced together with the oil, especially the oil produced by the leaching process has a darker color. Due to the strong activity of activated clay, there are many accompanying reactions in the decolorization process, which is reflected in the obvious increase in the acid value of oil after decolorization, and the increase in the content of hydroperoxides and secondary oxidation products. Appropriately increasing the decolorization temperature is beneficial to reduce the peroxide value in corn oil; but when ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/10
Inventor 王俊国于殿宇王立琦张旭江连洲张青齐晓芬任悦刘欣王文华张如春
Owner NORTHEAST AGRICULTURAL UNIVERSITY