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Technique for producing walnut oil by cold pressing and cold refining method

A technology of walnut oil and cold refining, which is applied in the direction of edible oil/fat, food science, application, etc., and can solve the problems of high cost and poor quality

Inactive Publication Date: 2009-04-22
王丰俊 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the invention is to solve the problems of high cost and poor quality in the production of current walnut oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0005] The present invention is achieved through the following technical solutions.

[0006] (1) Select the walnut kernels produced in the current year to remove impurities.

[0007] (2) Soak in warm water at 55-60°C for 10 minutes.

[0008] (3) Use 0.4-0.5MPa high-pressure water to wash away the seed coat on the surface of the walnut kernel.

[0009] (4) Dry the walnut kernels with hot air at 80-90°C.

[0010] (5) Put walnut kernels into a cold press to extract walnut oil.

[0011] (6) The walnut crude oil was left to settle for 10-12 hours.

[0012] (7) Use plate and frame filter and precision filter to filter.

[0013] (8) Filling.

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Abstract

The main contents of the invention are as follows: 1. the walnut kernel picked up in the same year is selected, and impurities of the walnut kernel are removed; 2. the walnut kernel is soaked in warm water at the temperature of between 55 and 60 DEG C for 10 minutes. 3. walnut kernel is peeled off by the washing of high-pressure water at the pressure of between 0.4 and 0.5MPa; 4. the walnut kernel is dried by hot air at a temperature of between 80 and 90 DEG C; 5. the walnut kernel is put in a cold pressing machine to extract walnut oil; 6. the crude walnut oil is stood for sedimentation for 10 to 12 hours; 7. the crude walnut oil is filtered by a plate-and-frame filter and a microfroc filter; and 8. filling. The invention is characterized in that all processes are performed at the normal temperature, and are not affected by the high temperature, and no any solvent is left, thereby keeping the natural quality of the walnut oil.

Description

technical field [0001] The invention relates to a process for preparing oil, especially suitable for the preparation of walnut oil. Background technique [0002] The oil content of walnut is very high, and the fiber content is very little, so the preparation of walnut oil is more difficult. The main methods of producing walnut oil at present have: (1) traditional hydraulic oil press pressing. The disadvantage of this method is high labor intensity and low oil yield. (2) Pressing with a screw press. The disadvantage of this method is that walnut shells or other materials must be added to the walnut kernel, which not only affects the quality of the oil, but also hinders the utilization of the walnut meal. (3) Water substitution method. The water substitution method is a process of frying walnut kernels, grinding them, and then mixing the pulp, stirring the oil, and shaking the oil to separate the oil. Due to the high temperature of the process, it is not good for oil prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23D9/02
Inventor 王丰俊王建中冯广平
Owner 王丰俊
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