Method used for low-temperature cold-pressing screw-type extraction of full-fat wheat germ oil

A technology for wheat germ oil and wheat germ, which is applied in the production of fat oil/fat, production of fat, edible oil/fat, etc., can solve the problems of nutrient destruction and low oil yield, etc., and achieve high oil purity and low production cost. , the effect of low temperature

Inactive Publication Date: 2015-12-02
HEILONGJIANG HUIMINXING BIOTECH
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  • Summary
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for extracting full-fat wheat germ oil in a low-temperature cold-pressing spiral type, which solves the problem of low oil yield and damage to nutrients caused by high temperature in the cold-pressing process in the prior art; and Using a single enzyme pretreatment to quickly soften the oil in a weakly alkaline environment, and then steaming and frying with hot air, it can be directly processed by cold pressing, which simplifies the operation steps and improves the production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 20kg of wheat germ, distilled water with a mass fraction of 2%, adjust the pH to 7.5 with sodium bicarbonate, add cellulase with a mass fraction of 1.0%, stir evenly, spray on the wheat germ, mix well, and enzymolyze at 45°C for 1.5 hours . The enzymatically hydrolyzed wheat germ was transferred to a drying oven, heated by 120°C hot air, steamed and fried for 240s, and the water content was determined to be 12%. The enzyme-inactivated and dried wheat germ was cold-pressed with a low-temperature double-screw cold press, the feed temperature was 60°C, the pressure was 4.0MPa, the chamber temperature was controlled at 80°C, the speed of the press was 42r / min, and cold-pressed for 90s. Transparent and clear whole-fat wheat germ oil can be obtained, and the oil yield reaches 52.3%.

Embodiment 2

[0026] Take 40kg of wheat germ, distilled water with a mass fraction of 2%, adjust the pH to 7.8 with sodium carbonate, add 0.8% cellulase, mix well, spray on the wheat germ, mix well, and enzymatically hydrolyze at 40°C for 2 hours. The enzymatically hydrolyzed wheat germ was transferred to a drying oven, heated by 100°C hot air, steamed and fried for 280 seconds, and the water content was determined to be 10%. The enzyme-inactivated and dried wheat germ was cold-pressed with a low-temperature double-screw cold press, the feed temperature was 55°C, the pressure was 4.5MPa, the chamber temperature was controlled at 85°C, the speed of the press was 40r / min, and the cold press was 60s. Transparent and clear whole-fat wheat germ oil can be obtained, and the oil yield reaches 49.1%.

Embodiment 3

[0028] Take 40kg of wheat germ, distilled water with a mass fraction of 1%, adjust the pH to 7.2 with sodium acetate, add cellulase with a mass fraction of 1.0%, mix well, spray on the wheat germ, mix well, and enzymatically hydrolyze at 40°C for 1 hour. The enzymatically hydrolyzed wheat germ was transferred to a drying oven, heated by 120°C hot air, steamed and fried for 200 seconds, and the water content was determined to be 12%. The enzyme-inactivated and dried wheat germ was cold-pressed with a low-temperature double-screw cold press, the feed temperature was 60°C, the pressure was 5.0MPa, the chamber temperature was controlled at 90°C, the speed of the press was 38r / min, and cold-pressed for 70s. Transparent and clear whole-fat wheat germ oil can be obtained, and the oil yield reaches 53.0%.

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Abstract

The invention relates to a method used for low-temperature cold-pressing screw-type extraction of full-fat wheat germ oil. According to the method, under weak basic conditions, a single enzyme is adopted for enzymatic hydrolysis, enzyme deactivation and drying are carried out at the same time, and a low-temperature double-screw cold-pressing expeller is adopted for cold pressing so as to obtain transparent clear full-fat wheat germ oil. The method can be used for solving problems of the prior art that oil yield is low, and nutrients are destroyed because of excessively high temperature in cold pressing processes; the single enzyme is adopted for pretreatment, oil materials are softened quickly under weak basic conditions, hot wind cooking is adopted, cold pressing can be carried out directly, operation steps are simplified, and production efficiency is increased. Oil yield of the method is high; and the quality of the obtained full-fat wheat germ oil accords with industrial standards.

Description

technical field [0001] The invention relates to a method for full-fat wheat germ oil, in particular to a method for low-temperature cold-pressing spiral full-fat wheat germ oil. Background technique [0002] Wheat is the grain with the largest sowing area in the world, and my country is one of the main wheat-producing countries, so the development of wheat germ products has broad prospects. Wheat germ is the organism that grows in the early stage of wheat, and is the source of life of wheat. It is rich in protein, fat, vitamins, trace elements and some polymer active substances. It concentrates the essence of wheat, so it is known as a natural nutritional treasure house for human beings. Wheat germ oil is a kind of grain germ oil made from wheat germ. It is rich in vitamin E, unsaturated fatty acids, and trace physiologically active components such as vitamin B1, iron, and calcium. It is called the crown of vegetable oil. Wheat germ oil has high nutritional value and is a g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/06A23D9/02
Inventor 郑博吴雪弘
Owner HEILONGJIANG HUIMINXING BIOTECH
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