Method for extracting whole wheat-germ oil

A wheat germ oil and extraction method technology, applied in the field of wheat germ oil extraction, can solve the problems of chemical solvent residues, high residual oil in oil cakes, and no residue, and achieve high active ingredients, low pressing temperature, and avoid damage. Effect

Inactive Publication Date: 2008-01-09
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But all there are some defects in these methods: (1) the residual oil of oil cake that high-temperature pressing method goes out is high, because the temperature of pressing process is high, the color and luster of wheat germ oil is deep, easy to oxidize, and protein nutrition in the wheat germ is destroyed; (2) leaching The solvent used in the method is a flammable and explosive chemical reagent, which has certain toxicity, and there will be residues of chemical solvents in the product. The wheat germ oil extracted by the above two methods needs to be refined before the wheat germ oil capsule can be prepared. During the refining process, wheat germ oil has to be in direct c...

Method used

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specific Embodiment approach 1

[0016] Specific embodiment one: the whole fat wheat germ oil of this embodiment is extracted according to the following steps: (1) wheat germ is heated in 100 ± 2 ℃ oven for 4~6 minutes; (2) wheat germ quality 1%~4%, Enzyme activity unit is 0.8×10 5 ~1.2×10 5 After mixing the U / g enzyme with 1% distilled water of wheat germ mass, adjust the pH value to 6.0-8.0, then spray it on the wheat germ, and enzymolyze it at 50±2°C for 2-5 hours; (3) The enzymatically hydrolyzed wheat germ is heated at 100±2°C for 4 to 6 minutes; (4) Vacuum dried at 80±2°C until the moisture content of the material is 5% to 10%; (5) Cold pressing: feed temperature The temperature is 65-80°C, the pressure is 2.5-4.0 MPa, and the cold pressing time is 1-5 minutes to obtain full-fat wheat germ oil.

[0017] The wheat germ oil extracted by the above process is dripped into capsules according to the following method steps: directly drop capsules after fine filtration, and use WD 2 Double-head seamless drip...

specific Embodiment approach 2

[0019] Embodiment 2: The differences between this embodiment and Embodiment 1 are: in step (5), the cold pressing feed temperature is 70° C., the pressure is 3.7 MPa, and the cold pressing time is 2 minutes. Other steps and parameters are the same as those in Embodiment 1.

[0020] In this embodiment, cold pressing for 2 minutes has the highest oil yield of wheat germ oil.

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment one is: add the enzyme of the quality 2% of wheat germ in step (two). Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The present invention relates to an extraction method of full-fat wheat-germ oil. Said extraction method includes the following steps: (1), heat treatment of wheat germ; (2), enzymolysis; (3), enzymatic inactivation; (4), vacuum drying; and (5), cold-pressing so as to obtain the invented wheat-germ oil.

Description

Technical field: [0001] The invention relates to a method for extracting wheat germ oil. Background technique: [0002] my country has a large amount of wheat production. Wheat germ is a by-product of wheat flour milling. The available reserves of wheat germ are 2.8-4.2 million tons per year, but most of them are concentrated in the manufacture of primary products, and are often mixed into bran as feed , resulting in a waste of resources, so it is of great significance to fully develop wheat germ resources and conduct research on the extraction process of wheat germ oil. [0003] Wheat germ contains a variety of nutrients that are beneficial to the human body, including unsaturated fatty acids, vitamin E, phospholipids, phytosterols, octacosanol, oryzanol and trace elements, among which the content of vitamin E is as high as 140-400mg / 100g Known as the "Crown of Vegetable Oils". The oil content of wheat germ is 12%. At present, the extraction of wheat germ oil mainly adopt...

Claims

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Application Information

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IPC IPC(8): A23D9/02A23L1/29A23L33/00
Inventor 于殿宇贾庆胜王乐凯王立新张晓红任运宏王世让
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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