Method for synchronously extracting soybean oil and protein concentrate

A technology for concentrating protein and soybean oil, which is applied in the direction of edible oil/fat, protein food ingredients, protein composition of vegetable seeds, etc., can solve the problems of post-processing difficulties, use restrictions, protein loss, etc., and achieve the improvement of free oil yield , high ethanol recovery rate and simple equipment

Inactive Publication Date: 2011-10-26
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0009] At present, there are three methods for producing concentrated protein, one is the acid extraction method, which requires a large amount of acid and alkali and discharges a large amount of waste water containing nutrients such as sugar, resulting in difficulties in post-processing (there is a certain loss of protein in the extract)
The second is the alcohol extraction method. A prominent problem in the production of this method is the recovery of ethanol, that is, the leaching solution generally needs to be evaporated and rectified more than twice, and the r

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  • Method for synchronously extracting soybean oil and protein concentrate
  • Method for synchronously extracting soybean oil and protein concentrate
  • Method for synchronously extracting soybean oil and protein concentrate

Examples

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Effect test

experiment example 1

[0044] Experimental example 1 Screening experiment of optimum parameters of ethanol cold bath process conditions

[0045] 1 Materials and methods

[0046] 1.1 Materials and reagents

[0047] Absolute Ethanol Tianjin Tianli Chemical Reagent Co., Ltd.

[0048] 1.2 Main instruments and equipment

[0049] Electronic Analytical Balance Merlot-Toledo Instruments (Shanghai) Co., Ltd.

[0050] Low-speed centrifuge Anhui Zhongke Zhongjiaxue Instrument Co., Ltd.

[0051] Desktop high-speed refrigerated centrifuge Beijing Jingli Centrifuge Co., Ltd.

[0052] Low temperature and constant temperature stirring reaction bath Zhengzhou Great Wall Technology Industry and Trade Co., Ltd.

[0053] Semi-automatic azotometer Shanghai Xinjia Electronics Co., Ltd.

[0054] Digester Shanghai Fiber Inspection Instrument Co., Ltd.

[0055] Soxhlet Extractor Tianjin Glass Instrument Factory

[0056] 1.3 Experimental method

[0057] 1.3.1 Process flow (see figure 1 )

[0058] 1.3.2 Calculation...

experiment example 3

[0147] Experimental example 3 Screening experiment of optimal parameters of ultrasonic process conditions

[0148] 1 Materials and methods

[0149] 1.1.1 Main instruments and equipment

[0150] Ultrasonic Cell Disruptor Ningbo Xinzhi Biotechnology Co., Ltd.

[0151] 1.3 Experimental method

[0152] 1.3.1 Process flow (see figure 1 )

[0153] 1.3.2 Calculation formula

[0154]

[0155] 2 Results and Discussion

[0156] 2.1 Effect of single factor condition of ultrasonic process on the yield of free oil

[0157] 2.1.1 Effect of ultrasonic temperature on the yield of free oil

[0158] The ultrasonic time is 50s, the ultrasonic power is 400W, and the influence of ultrasonic temperature on the yield of free oil is investigated. The results are shown in Figure 22 . Depend on Figure 22 It can be seen from the results that the yield of free oil increases significantly when the ultrasonic temperature is higher than 50°C, but when the enzymatic hydrolysis time is greater ...

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Abstract

The invention discloses a method for synchronously extracting soybean oil and protein concentrate, belonging to the vegetable oil extracting and processing technology. The method comprises the following steps: performing enzymolysis on the soybean meal after extrusion puffing, centrifuging and collecting the hydrolyzate; adding ethanol into the hydrolyzate, performing cold bath, centrifuging and precipitating to obtain high-purity protein concentrate; and (2) rotating and evaporating the supernate, performing ultrasonic and high-speed centrifugal treatment on the residual mixture, and leadingout and collecting the oil to obtain the soybean oil. The method can synchronously obtain high-quality green soybean oil and high-purity protein concentrate, requires simple equipment, is safe to operate, avoids solvent residual in the obtained soybean oil, obtains high-quality oil with high nutritional value, and can realize an oil recovery rate of 99-100%.

Description

technical field [0001] The invention belongs to the extraction and processing technology of vegetable oil, and mainly relates to a method for synchronously extracting soybean oil and concentrated protein from soybeans. Background technique [0002] At present, there are two kinds of soybean oil production processes, one is solvent leaching method and extrusion puffing-leaching method, and the other is mechanical pressing method. The solvent leaching method with a relatively high oil yield has a low residual oil rate (<1%, dry basis), and there will be some residual solvent, which is often a component of hydrogen gasoline. Try to control it at a certain level of safety, but it is difficult to say that there is Sometimes, if there is a process problem in one place, it will cause hydrogen oil residue or excess oil residue in and out. [0003] No. 6 extraction solvent is used as the main solvent for leaching. Its main components are n-hexane and heptane. In addition, it also...

Claims

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Application Information

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IPC IPC(8): A23D9/02A23J1/14
Inventor 李杨江连洲刘琪齐宝坤黄雨洋王梅
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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