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Technology of extracting oil and hydrolyzed protein from peanut using hydroenzyme method

A technology for hydrolyzing protein and extracting oil, which is applied in protein food processing, protein composition of vegetable seeds, protein food ingredients, etc., can solve the problems of lack of peanut protein properties, research on recovery methods, no explanation of oil recovery and recovery, and no indications, etc. , to achieve the effects of easy industrial production, improved recovery rate, and simple equipment

Inactive Publication Date: 2004-12-22
JIANGNAN UNIV
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Problems solved by technology

However, the author did not indicate in the article whether the oil yield refers to the total oil extraction rate or the free oil extraction rate, did not specify whether the oil is recovered in the form of emulsifiable concentrate or free oil, and did not specify the properties and recovery methods of peanut protein. Research

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  • Technology of extracting oil and hydrolyzed protein from peanut using hydroenzyme method

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Embodiment 1

[0042] The raw material is stripped of the red coat, and the peeled peanut kernels are dry crushed with a portable traditional Chinese medicine grinder. The crushed peanuts are extracted with 4 times the lye, the initial pH of the extraction is 8.25, and the temperature is 60°C. After 20 minutes, the pH of the system was adjusted to 8.00 (within the optimum pH range of Alcalase2.4L), the amount of enzyme added was 2.5ml / 100g protein, and the pH of the system was controlled at about 8.00 by pH-stat. After 7 hours, the degree of hydrolysis of the system was Reached 22.7%.

[0043] The total oil yield was 97.3%, and the total protein yield was 95.6%.

[0044] The total free oil yield was 92.4%, and the recovery rate of peanut hydrolyzed protein reached 90%.

Embodiment 2

[0046] The raw material is stripped of the red coat, and the peeled peanut kernels are dry crushed with a portable traditional Chinese medicine grinder. The crushed peanuts are extracted with 5 times the alkali solution, the initial pH of the extraction is 8.50, and the temperature is 60°C. After 40 minutes, the pH of the system was adjusted to 8.50, the amount of enzyme added was 1.5mL / 100g protein, and the natural enzymatic hydrolysis was carried out for 8 hours.

[0047] The total oil yield was 97%, and the total protein yield was 94.1%.

[0048] The total free oil yield was 91.6%, and the recovery rate of peanut hydrolyzed protein reached 84%.

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Abstract

A process for extracting oil and hydrolytic protein from peanut by water-enzyme method includes such steps as extracting emulsified oil by use of alkaline proteinase, and demulsifying it by freezing and thawing to obtain free oil while recovering hydrolytic protein powder in the form of micropeptide. Its advantages are high oil output and high nutritive value.

Description

technical field [0001] The invention discloses a process for extracting oil and hydrolyzed protein from peanuts by an aqueous enzymatic method, which belongs to the technical field of application of biotechnology in food industry. Background technique [0002] At present, the main oil-making processes in the world include mechanical method, leaching method and aqueous method. At present, there are two main processing methods in China, one is the organic solvent leaching method, and the other is the physical pressing method using mechanical external force. The above-mentioned method is also a traditional method for separating oil and protein in oil plants, that is, a two-step process route of first extracting oil from oil plants and then extracting protein from the resulting cake. Although these methods have high oil extraction rates, the oil extraction process will cause protein denaturation to varying degrees, thereby affecting its nutritional value and functional properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23D9/04A23J1/14A23J3/34
Inventor 王璋许时婴王瑛瑶袁博
Owner JIANGNAN UNIV
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