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Preparation method of walnut oil

A walnut oil and walnut technology, applied in the field of walnut oil preparation, can solve the problems of low oil yield of walnut oil, poor product color, etc., and achieve the effects of improving the separation effect of wax oil, reducing sour and bitter taste, and increasing yield

Inactive Publication Date: 2017-05-17
迪庆香格里拉舒达有机食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the walnut oil produced by cold pressing method in my country has a low oil yield, and the color of the product is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of walnut oil preparation method, comprises the following steps:

[0030] (1) Select the dried wild walnuts that were born in the current year, remove the walnuts that have deteriorated, clean the surface, and sterilize;

[0031] (2) dry and cool, break the shell with a crusher, and separate the shell and kernel;

[0032] (3) Put the walnut kernels in 0.6% sodium hydroxide lye to peel for 15 minutes, remove the walnuts, rinse them with clean water, and dry until the water content is ≤3%, and the drying temperature is ≤45°C;

[0033] (4) walnut kernel is pulverized, enters hydraulic press, and solid-liquid separation obtains crude oil and oil residue;

[0034] (5) Add extraction water to the oil residue, the ratio of extraction water to oil residue is 8:1, mix well and add it to an ultrasonic extractor for ultrasonic extraction, the ultrasonic temperature is 40-45°C, the ultrasonic power is 600W, and the extraction time is After 50 minutes, add water to cool it ...

Embodiment 2

[0038] A kind of walnut oil preparation method, comprises the following steps:

[0039] (1) Select the dried wild walnuts that were born in the current year, remove the walnuts that have deteriorated, clean the surface, and sterilize;

[0040] (2) dry and cool, break the shell with a crusher, and separate the shell and kernel;

[0041] (3) Put the walnut kernels in 0.5% sodium hydroxide lye and peel them for 13 minutes, remove them, rinse them with clean water, and dry until the water content is ≤3%, and the drying temperature is ≤45°C;

[0042] (4) walnut kernel is pulverized, enters hydraulic press, and solid-liquid separation obtains crude oil and oil residue;

[0043] (5) Add extraction water to the oil residue, the ratio of extraction water to oil residue is 5:1, mix well and add it to an ultrasonic extractor for ultrasonic extraction, the ultrasonic temperature is 40-45°C, the ultrasonic power is 500W, and the extraction time is After 45 minutes, add water to cool it s...

Embodiment 3

[0047] A kind of walnut oil preparation method, comprises the following steps:

[0048] (1) Select the dried wild walnuts that were born in the current year, remove the walnuts that have deteriorated, clean the surface, and sterilize;

[0049] (2) dry and cool, break the shell with a crusher, and separate the shell and kernel;

[0050] (3) Put the walnut kernels into 0.6% sodium hydroxide lye and peel them for 14 minutes, remove them, rinse them with clean water, and dry until the water content is ≤3%, and the drying temperature is ≤45°C;

[0051] (4) walnut kernel is pulverized, enters hydraulic press, and solid-liquid separation obtains crude oil and oil residue;

[0052] (5) Add extraction water to the oil residue, the ratio of extraction water to oil residue is 6:1, mix well and add it to an ultrasonic extractor for ultrasonic extraction, the ultrasonic temperature is 40-45°C, the ultrasonic power is 500W, and the extraction time is After 50 minutes, add water to cool it...

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Abstract

The invention discloses a preparation method of walnut oil. The preparation method of the walnut oil comprises the following steps: carrying out careful selecting, carrying out washing, carrying out sterilization, carrying out peeling, carrying out pressing, and carrying out ultrasonic extraction. According to the preparation method of the walnut oil, the preparation is carried out at 45 DEG C, and the walnut kernel peel is removed before pressing by using alkaline liquor, so that the qualities and the color of the walnut oil are improved; and ultrasonic extraction is adopted so as to increase yield rate, reduce oil content rate of the oil cakes, balance protein in the walnut oil and the oil cakes so as to ensure protein stability in the oil cakes, and improve wax-oil separation effect. The preparation method of the walnut oil is simple in processes; and the walnut oil which is clear, transparent and bright in color, free of impurities, rich in nutrition and high in oil yield can be prepared without the step of carrying out decoloring by adopting the preparation method.

Description

technical field [0001] The invention relates to the field of edible oil processing, in particular to a preparation method of walnut oil. Background technique [0002] The oil content in walnut kernels is higher than 60%, and walnut oil is rich in unsaturated fatty acids (oleic acid, linoleic acid and linolenic acid account for more than 90% of the total), especially the content of linolenic acid is significantly higher than other common vegetable oils . In addition, walnut oil also contains a variety of vitamins, mineral elements and physiologically active substances that are beneficial to the human body, such as vitamin E, iron and flavonoids. Therefore walnut oil is a kind of high-grade and precious nutrition and health care oil, which is favored by consumers in the international market. [0003] At present, the preparation methods of walnut oil mainly include carbon dioxide supercritical extraction, solution leaching extraction, water substitution method, aqueous phase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23D9/04C11B1/04C11B1/06C11B1/10C11B3/00
CPCA23D9/04C11B1/04C11B1/06C11B1/104C11B3/001C11B3/008
Inventor 和薇
Owner 迪庆香格里拉舒达有机食品有限公司
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