Method for extracting high-quality soybean germ oil by using subcritical butane

A soybean germ and subcritical technology, which is applied in the production of edible oil/fat, fat oil/fat, and fat production, can solve the problems of product quality degradation, shortened production cycle, and large investment in extraction equipment, and achieve low equipment manufacturing costs. The effect of speeding up the extraction speed and shortening the production cycle

Active Publication Date: 2011-08-24
江苏鸿祺生物科技有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0011]In order to overcome the large investment in supercritical CO2 extraction equipment, low output and high production cost; No. 6 solvent extraction (mainly n-hexane) Product quality declines during the desolvation process of mixed oil; during subcritical fluid extraction, the desolvation efficiency of wet meal is low, the dissolution consumption is high, and the requirements of food safety, the invention provides a subcritical butane extraction technology of soybean germ oil, By controlling the extraction temperature, the extraction efficiency of oil and the dissolution rate of β-sitosterol are significantly improved, and the production cycle is shortened; at the same time, the heat supply method for wet meal desolventization is improved, the desolventization efficiency is improved, and the loss of solvent is reduced. The protein in the meal is not destroyed, which is conducive to its further development and utilization, and can significantly increase economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The fresh soybean germ that has just been separated from the production line of the oil mill, after removing impurities, the purity of the soybean germ is 78%, and is rolled into 0.4mm flakes by a flaking machine.

[0035] Take 1000kg of the above-mentioned soybean germ, put it into an extraction tank, use subcritical butane as the lysing enzyme, the mass ratio of solid to liquid is 1:3, the extraction temperature is 25°C, and the stirring speed is 35 rpm. After 45 minutes of extraction, the mixed oil enters the evaporating tank, and under reduced pressure, it is heated with hot water at 60°C for desolvation. The vaporized butane is compressed by the compressor, liquefied in the condenser, and then returned to the solvent tank; The wet meal in the extraction tank is evaporated under reduced pressure, and steam is passed into the jacket and stirring blades to heat and stir for desolvation. The stirring speed is 25 rpm, and the temperature for wet meal desolvation is contr...

Embodiment 2

[0038] The fresh soybean germ just separated from the low-temperature soybean protein production enterprise, after removing impurities, the purity of soybean germ is 78%, transported by conveyor, and rolled into 0.5mm flakes by flaking machine.

[0039] Take 1000 kg of the above-mentioned soybean germ, put it into the extraction tank, use subcritical butane as the lysing enzyme, and the mass ratio of solid to liquid is 1:3, pass steam into the jacket and stirring blade, maintain the extraction temperature at 55 °C, and the stirring speed at 15 rpm / min. After 15 minutes of extraction, the mixed oil enters the evaporation tank, and is heated and desolvated at 60°C under reduced pressure. The vaporized butane is compressed by the compressor, liquefied in the condenser, and then returned to the solvent tank; The wet meal in the tank is evaporated under reduced pressure, and steam is passed into the jacket and stirring blades to heat and stir for desolventization. The stirring spe...

Embodiment 3

[0042] The fresh soybean germ that has just been separated from the production line of the oil mill, after removal of impurities, the purity of the soybean germ is 80%, and is rolled into 0.4mm flakes by a flaking machine.

[0043] Take 1000 kg of the above-mentioned soybean germ, put it into the extraction tank, use subcritical butane as the lysing enzyme, and the mass ratio of solid to liquid is 1:3, pass steam into the jacket and stirring blade, maintain the extraction temperature at 55 °C, and the stirring speed at 35 rpm / min. After 25 minutes of extraction, the mixed oil enters the evaporating tank, and under reduced pressure, the 60°C hot water is heated for desolventization, and the vaporized butane is compressed by the compressor, liquefied in the condenser, and then returned to the solvent tank; The wet meal in the extraction tank is evaporated under reduced pressure, and hot water at 60°C is introduced into the outer jacket of the extraction tank to heat, and stirre...

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Abstract

The invention relates to a method for extracting high-quality soybean germ oil by using subcritical butane and relates to the field of grain fine and deep processing. The method comprises: cutting purified soybean germs into slices which are 0.3 to 0.4 millimeters thick; placing the slices in an extraction kettle; performing 1 to 5 times of countercurrent leaching of the cut soybean germs by using liquefied butane as a solvent, wherein the extraction time is 10 to 120 minutes, the material to liquid ratio is 1:(1-6), the extraction temperature is 10 to 90 DEG C, and the extraction pressure is0.2 to 0.1MPa; delivering extracted mixed oil and wet dregs into an evaporation system and desolventizing under reduced pressure; and subjecting the obtained soybean germ crude oil to normal winterization, alkali refining and decolorization processes to obtain a soybean germ oil product with high beta-sitosterol content. In the invention, the soybean germ oil is extracted by using subcritical butane, the manufacturing cost of equipment is reduced considerably, the operation cost is low, the production period is shorter, the yield is high, and the method represents a low-consumption and environment-friendly practical technique for producing soybean germ oil.

Description

technical field [0001] The invention relates to the field of deep grain processing, in particular to a method for producing soybean germ oil and low-temperature soybean germ meal rich in β-sitosterol by using soybean germ as a raw material and using high-purity subcritical butane. Background technique [0002] Soybean germ is one of the by-products of soybean oil and protein industry. Although it only accounts for 2.0-2.5% of the total weight of soybeans, it is the part with the richest nutritional value and the most biologically active substances in soybeans. Soybean germ contains about 10% oil, and its main components are unsaturated fatty acids such as linoleic acid, linolenic acid and oleic acid, accounting for more than 80% of the total lipid. In addition, soybean germ oil is also rich in β-sitosterol, phospholipids, vitamin E and unsaponifiable substances, etc. Long-term consumption of soybean germ oil can prevent arteriosclerosis, reduce the incidence of heart disease...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10A23D9/02
Inventor 徐斌董英李波王宏平苗文娟
Owner 江苏鸿祺生物科技有限公司
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