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Process for extracting wheat germ oil by using low-temperature subcritical method

A technology for wheat germ oil and wheat germ, which is applied in the production of fat oil/fat, refining of fat oil/fat, vegetable protein processing, etc. Excellent physical and chemical indicators, the effect of reducing oil loss

Pending Publication Date: 2021-01-12
河南省鲲华生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solvent of the organic solvent extraction method, that is, the extraction agent, is mainly the No. 6 solvent. The main component of the No. 6 solvent is six-carbon alkane-hexane, but its initial boiling point is greater than or equal to 60 ° C, and the 98% distillation temperature is less than or equal to 90 ° C. At this temperature for a long time, it is easy to destroy vitamin E and protein in wheat germ oil
For supercritical CO 2 Extraction method, the production process always needs to maintain a high p

Method used

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  • Process for extracting wheat germ oil by using low-temperature subcritical method
  • Process for extracting wheat germ oil by using low-temperature subcritical method
  • Process for extracting wheat germ oil by using low-temperature subcritical method

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Embodiment 1

[0032] Such as Figure 1-Figure 3 Shown, a kind of low-temperature subcritical method extracts the technology of wheat germ oil, comprises the following steps:

[0033] S1. Using a solvent to extract the wheat germ to obtain a mixture of wheat germ crude oil, defatted wheat germ and solvent, and separating the defatted wheat germ;

[0034] S2. separating wheat germ crude oil and solvent from each other;

[0035] S3. Grinding and sieving the defatted wheat germ to obtain defatted wheat germ protein powder;

[0036] S4. Degumming, washing, and dehydrating the crude wheat germ oil, then using methanol as a solvent to extract and deacidify the crude wheat germ oil, then separating the crude wheat germ oil from methanol, and then molecularly distilling the crude wheat germ oil to obtain the finished product Wheat germ oil, the acid value of the finished wheat germ oil is below 0.1mgKOH / g, the peroxide value is below 1g / 100g, and the moisture content is 0.05%.

[0037] Described ...

Embodiment 2

[0054] There is no essential difference between this embodiment and Embodiment 1. The difference is that the water content of the wheat germ added to the extraction tank 1 is dried at 1%, while the acid value of the finished wheat germ oil is 0.053mgKOH / g, and the peroxide value is 0.1 g / 100g, moisture 0.04%.

Embodiment 3

[0056] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the water content of the wheat germ added to the extraction tank 1 is dried at 5%, and the acid value of the finished wheat germ oil is 0.076mgKOH / g, and the peroxide value is 0.5 g / 100g, moisture 0.05%.

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Abstract

The invention discloses a process for extracting wheat germ oil by using a low-temperature subcritical method. The process comprises the following steps of: S1, extracting wheat germs by using a solvent to obtain a mixture of crude wheat germ oil, degreased wheat germs and the solvent; S2, separating the crude wheat germ oil, the degreased wheat germ and the solvent from one another; S3, crushingand screening the degreased wheat germs to obtain degreased wheat germ protein powder; and S4, degumming, washing and dehydrating the crude wheat germ oil, extracting and deacidifying the crude wheatgerm oil by using methanol as a solvent, separating the crude wheat germ oil from the methanol, and performing molecular distillation on the crude wheat germ oil to obtain the finished wheat germ oilwith an acid value of 0.1 mgKOH/g or below, a peroxide value of 1g/100g or below and a water content of 0.05%.

Description

technical field [0001] The invention belongs to the technical field of wheat germ oil production, and in particular relates to a process for extracting wheat germ oil by a low-temperature subcritical method. Background technique [0002] At present, domestic wheat germ oil extraction methods mainly include organic solvent extraction and supercritical CO 2 extraction, etc. The solvent of the organic solvent extraction method, that is, the extraction agent, is mainly the No. 6 solvent. The main component of the No. 6 solvent is six-carbon alkane-hexane, but its initial boiling point is greater than or equal to 60 ° C, and the 98% distillation temperature is less than or equal to 90 ° C. At this temperature for a long time, it is easy to destroy vitamin E and protein in wheat germ oil. For supercritical CO 2 In the extraction method, the production process always needs to maintain a relatively high pressure, and its equipment cost is relatively high, and the cost is high, an...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11B3/00A23J3/18
CPCC11B1/104C11B3/00A23J3/18
Inventor 朱新亮王金顺孙现红刘运革李海良胡鹏祁鲲
Owner 河南省鲲华生物技术有限公司
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