CN112029577A

CN112029577A - Simple refining method of camellia oil

Info

Publication number: CN112029577A
Application number: CN202010869329.7A
Authority: CN
Inventors: 郑睿行; 祝华明; 余洪明
Original assignee: Zhejiang Old Root Of Camellia Oleifera Development Co ltd; Ningbo Institute For Food Control
Current assignee: Zhejiang Old Root Of Camellia Oleifera Development Co ltd; Ningbo Institute For Food Control
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-12-04

Abstract

The invention provides a simple refining method of camellia oil, belonging to the technical field of vegetable oil preparation, and comprising the following steps: 1) mixing the camellia crude oil with magnesium silicate under stirring, and then mixing with water under stirring to obtain a stirred substance; 2) heating the stirred material obtained in the step 1) to 110-120 ℃ at a constant speed while stirring, cooling and filtering to obtain a camellia oil finished product. The invention simplifies the refining process of camellia oil, does not need too much intermediate medium, and reduces the cost and the medium pollution.

Description

Simple refining method of camellia oil

Technical Field

The invention belongs to the technical field of vegetable oil preparation, and particularly relates to a simple refining method of camellia oil.

Background

At present, the camellia oil is still treated according to degumming, deacidification, decoloration and deodorization to treat acid value, peroxide value, pigment and the like in the oil, an intermediate medium is needed to carry out the treatment on the substances (such as sodium hydroxide, activated clay, activated carbon and the like), the food safety hazard caused by the pollution of toxic and harmful substances possibly brought by the intermediate exists, the complicated oil preparation process needs longer time, the product yield is reduced, the energy consumption is high, and the cost is increased.

Disclosure of Invention

In view of the above, the present invention aims to provide a method for refining camellia oil, which simplifies the refining process of camellia oil, does not need too many intermediate mediums, and reduces cost and environmental pollution.

In order to achieve the above purpose, the invention provides the following technical scheme:

the invention provides a camellia oil refining method, which comprises the following steps:

1) mixing the camellia crude oil with magnesium silicate under stirring, and mixing with water under stirring to obtain a stirred substance;

2) heating the stirred material obtained in the step 1) to 110-120 ℃ at a constant speed under stirring, cooling and filtering to obtain the camellia finished oil.

Preferably, the rotation speed of the stirring is 30-60 rpm.

Preferably, the stirring time in the step 1) is 5-10 min respectively.

Preferably, the magnesium silicate is food grade magnesium silicate.

Preferably, the magnesium silicate in the step 1) accounts for 1.5-3% of the mass of the crude camellia oil.

Preferably, the water in the step 1) is 0.1-0.4 per mill of the mass of the crude camellia oil.

Preferably, the temperature rise time in the step 2) is 2 h.

Preferably, the purity of the food-grade magnesium silicate is more than or equal to 99%.

The invention provides a camellia oil refining method, which comprises the following steps: 1) mixing the camellia crude oil with magnesium silicate under stirring, and mixing with water under stirring to obtain a stirred substance; 2) heating the stirred material obtained in the step 1) to 110-120 ℃ at a constant speed under a stirring state, cooling and filtering to obtain a finished camellia oil product.

The invention has the advantages that:

1. simplifies the refining process of the camellia oil, and simplifies a plurality of refining processes of the camellia oil into a pure physical process.

2. The possible pollution of the grease by excessive food additives (auxiliary agents or media) is prevented in the refining process.

3. And the oil is prevented from generating toxic and harmful substances at high temperature in the refining process.

4. The investment of oil-making media is reduced, the energy consumption is reduced, and the cost is saved.

5. Ensuring that the product meets the national food safety standard (GB 11765-2018).

Detailed Description

1) mixing the crude camellia oil with magnesium silicate under stirring, and mixing with water under stirring to obtain a stirred substance;

2) heating the stirred material obtained in the step 1) to 110-120 ℃ at a constant speed under a stirring state, cooling and filtering to obtain a finished camellia oil product.

The camellia crude oil is mixed with magnesium silicate under stirring, and then is mixed with water under stirring to obtain a stirred material.

The preparation method of the camellia crude oil is not particularly limited, and the conventional preparation method for preparing the camellia crude oil is adopted.

In the invention, the magnesium silicate is preferably food grade magnesium silicate, and the purity of the food grade magnesium silicate is preferably more than or equal to 99%. In the invention, the magnesium silicate is preferably 1.5-3% of the mass of crude camellia oil. In the invention, the magnesium silicate has the functions of removing acid value and peroxide value in oil, and reducing color and luster and benzo (a) pyrene.

In the invention, the water is preferably domestic water, and the water is preferably (0.1-0.4)% of the mass of the camellia crude oil. In the present invention, the purpose of adding water is to accelerate the absorption and sedimentation of the phospholipid, facilitating its filtration.

In the invention, the stirring time of the camellia crude oil and the magnesium silicate is preferably 5-10 min; the mixing time with water is preferably 5-10 min. In the present invention, the stirring speed is preferably 30 to 60 rpm. In the invention, the container pressure of the stirrer is kept below 0.09MPa, so that the stirrer is prevented from being exposed to air, and the formed camellia product oil is prevented from being unstable.

The obtained stirred material is heated to 110-120 ℃ at a constant speed under stirring, cooled and filtered to obtain the camellia finished oil.

In the present invention, the stirring speed is preferably 30 to 60 rpm. In the present invention, the time for raising the temperature is preferably 2 hours. In the invention, the temperature is uniformly increased to 110-120 ℃ so that the magnesium silicate has better adsorption property. Too high a temperature will cause the oxidation of the grease to be accelerated.

In the present invention, the filtration is preferably performed under stirring, and the stirring speed is preferably 30 to 60 rpm. In the invention, the oil is filtered by using 70-90-mesh filtering cotton cloth and food-grade filtering paper, the oil is automatically filtered by utilizing a high potential difference, and then the oil is conveyed and filtered by using a vortex pump until the filtering is finished, so that a finished camellia oil product is obtained.

The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.

Example 1

122.4886g of crude camellia oil is mixed with 3.5746g of food-grade magnesium silicate under the stirring of 60rpm, and then is mixed with 0.367g of water under the stirring of 60rpm to obtain a stirrer (the pressure of a container of the stirrer is kept below 0.09 MPa), the stirrer is stirred under 60rpm for 2h and is heated to 120 ℃ at a constant speed, and the mixture is cooled and filtered to obtain finished camellia oil.

Example 2

110.7628g of crude camellia oil is mixed with 1.1076g of food-grade magnesium silicate under the stirring of 60rpm, and then is mixed with 0.11g of water under the stirring of 60rpm to obtain a stirrer (the pressure of a container of the stirrer is kept below 0.09 MPa), the stirrer is stirred at 60rpm for 2h and is heated to 110 ℃ at a constant speed, and the mixture is cooled and filtered to obtain finished camellia oil.

The quality indexes of the crude camellia oil and the finished camellia oil of the embodiment 1 and the embodiment 2 are detected, and the results are shown in table 1.

TABLE 1 oil quality index

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A camellia oil refining method is characterized by comprising the following steps:

1) mixing the camellia crude oil with magnesium silicate under stirring, and then mixing with water under stirring to obtain a stirred substance;

2) heating the stirred material obtained in the step 1) to 110-120 ℃ at a constant speed under the stirring condition, cooling and filtering to obtain the camellia finished oil.

2. The process of claim 1, wherein the stirring speed is 30 to 60 rpm.

3. The refining method of claim 1, wherein the stirring time in step 1) is 5-10 min.

4. The process of claim 1, wherein the magnesium silicate is a food grade magnesium silicate.

5. The refining method of claim 1, wherein the magnesium silicate of step 1) accounts for 1.5-3% of the weight of the crude camellia oil.

6. The refining method of claim 1, wherein the water in step 1) is 0.1-0.4 ‰ of the quality of crude camellia oil.

7. The process of claim 1, wherein the temperature in step 2) is raised for a period of 2 hours.

8. The refining process of claim 4, wherein the food grade magnesium silicate has a purity of 99% or more.