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Method for simultaneously extracting peanut oil and peanut protein

A peanut oil and protein technology, applied in the field of agricultural resources, can solve the problems of low utilization value, loss of nutrients, destruction of peanut protein and the like

Inactive Publication Date: 2018-01-26
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for simultaneously extracting peanut oil and peanut protein, which is suitable for simultaneous extraction of peanut oil and protein, and aims to solve the loss of nutrients caused by the traditional high-temperature pressing combined with solvent methods. The solvent method has potential solvent residues and Environmental pollution, at the same time, peanut protein is severely damaged, and the use value is low

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  • Method for simultaneously extracting peanut oil and peanut protein
  • Method for simultaneously extracting peanut oil and peanut protein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) After pre-crushing the peeled peanuts (50.21% oil content, 21.26% protein content) into 4-8 petals, adjust the moisture content to 9%, and perform cold pressing at a pressing temperature of 40°C to obtain cold pressed peanuts. Peanut crude oil is obtained by filtering the crude oil with a plate and frame filter to obtain cold-pressed peanut oil (cold-pressed clear oil).

[0025] (2) Step (1) The peanut oil obtained after cold pressing accounts for 40% of the total oil content. 1 weight of peanut meal is crushed through a 60-mesh sieve and mixed with 6 parts by weight of water, and the pH value is adjusted at a temperature of 50 ° C and 2 mol / L NaOH to 8, extract for 4 hours, and the stirring speed is 200r / min. Carry out centrifugation under the condition of 4000g then, obtain peanut oil phase (clear oil), emulsion liquid phase, water phase and slag phase.

[0026] (3) Add 1 times the weight of water to the emulsion obtained in step (2), add 0.5% papain (W / W) (manuf...

Embodiment 2

[0033] (1) After pre-crushing the peeled peanuts (50.21% oil content, 21.26% protein content) into 4-8 petals, adjust the moisture content to 12%, and perform cold pressing at a pressing temperature of 60°C to obtain cold pressed peanuts. Peanut crude oil is obtained by filtering the crude oil with a plate and frame filter to obtain cold-pressed peanut oil (cold-pressed clear oil).

[0034] (2) The peanut oil obtained after cold pressing accounts for 45% of the total oil content. 1 weight of peanut meal is crushed through an 80-mesh sieve and mixed with 5 parts by weight of water, and the pH value is adjusted to 8.5 at a temperature of 60 ° C and 2 mol / L NaOH. Extract for 6h, the stirring speed is 200r / min. Then carry out centrifugation under the condition of 3000g to obtain peanut oil phase (clear oil), emulsion liquid phase, water phase and slag phase.

[0035] (3) Add 0.5 times the weight of water to the emulsion phase obtained in step (2), add 0.5% Protex 7L (W / W) (manufa...

Embodiment 3

[0039] (1) After pre-crushing the peeled peanuts (50.21% oil content, 21.26% protein content) into 4-8 petals, adjust the moisture content to 15%, and perform cold pressing at a pressing temperature of 45°C to obtain cold pressed peanuts. Peanut crude oil is obtained by filtering the crude oil with a plate and frame filter to obtain cold-pressed peanut oil (cold-pressed clear oil).

[0040](2) The peanut oil obtained after cold pressing accounts for 50% of the total oil content. 1 weight of peanut meal is crushed through a 100-mesh sieve and mixed with 7 parts by weight of water, and the pH value is adjusted to 9.5 at a temperature of 60 ° C and 4 mol / L NaOH. Extract for 3 hours, the stirring speed is 200r / min. Then carry out centrifugation under the condition of 3500g to obtain peanut oil phase (clear oil), emulsion liquid phase, water phase and slag phase.

[0041] (3) Add 1.5 times the weight of water to the emulsion phase obtained in step (2), add 0.5% Alcalase 2.4L (W / W)...

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Abstract

The invention discloses a method for simultaneously extracting peanut oil and peanut protein, belonging to the technical field of agricultural resources. The method comprises the steps of pre-treatingpeanuts, carrying out low-temperature cold-squeezing, extracting residual oil in peanut meal with high oil content by virtue of a water-enzyme method, simultaneously extracting the peanut protein, and the like. According to the method, the high-quality peanut oil is extracted, and meanwhile, the high-quality peanut protein is obtained; the comprehensive utilization of the peanut resource is realized, the formation of trans-fatty acid in the high-temperature squeezing process of the peanut oil is avoided, and meanwhile, the serious damage of the protein in the high-temperature squeezed peanutmeal is avoided; the problem of the residual solvent in the peanut oil is avoided; and the total extraction rate of the peanut oil can reach 92% or above, the recovery rate of the protein reaches 85%or above, and the quality of the peanut oil is excellent.

Description

technical field [0001] The invention relates to a method for simultaneously extracting peanut oil and peanut protein, belonging to the technical field of agricultural resources. Background technique [0002] Peanut is one of the main oil crops in my country. The annual output of peanuts in the country exceeds 170 million tons, of which Liaoning and Shandong are the main peanut producing areas. The oil content in peanuts is about 45%-52%, and the protein content is about 20-23%. At present, the extraction of peanut oil in my country is mainly through the processing technology of high temperature pressing combined with solvent method. However, because the high-temperature pressing conditions severely destroy peanut protein and other nutrients in peanuts, the utilization rate of oil resources or the economics of processing technology are reduced. The traditional solvent method has the advantages of high extraction rate, but as people's awareness of food safety and environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/06C11B1/04C11B3/00A23J1/14
CPCA23J1/14C11B1/04C11B1/06C11B3/00C11B13/02
Inventor 杨瑞金李鹏飞张文斌赵伟华霄
Owner JIANGNAN UNIV
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