阅读说明：本技术 一种酶法提取花生油的工艺 (Process for extracting peanut oil by enzyme method ) 是由 于小华 于强 孔德程 宋福荣 王青 杨增龙 于 2020-12-25 设计创作，主要内容包括：本发明提供一种酶法提取花生油的工艺,涉及花生油提取领域。该酶法提取花生油的工艺,包括以下步骤：S1.对材料进行筛选：挑选饱满颗粒；S2.进行烘干：风干；S3.进行去皮破壁；S4.进行粉碎水解工作：加入复合酶；S5.进行分离：油脂与固体颗粒分离；S6.进行去除磷脂：加磷脂酶；S7.进行过滤：过滤颗粒；S8.进行测量调节：调节PH；S9.进行纯化。通过破壁后进行加入水解酶,破壁可以对花生的细胞进行初步的破除,增加细胞水解的速度,可以有效缩短水解酶的水解时间,提高花生油提取的效率,提前经过风干程序,使细胞内部的浓度偏大,造成缺水现象,可以使外界水解酶更加快速地进入到花生细胞的内部,然后对其表面的组织进行破除,加快提取的效率。(The invention provides a process for extracting peanut oil by an enzyme method, and relates to the field of peanut oil extraction. The process for extracting peanut oil by the enzyme method comprises the following steps: s1, screening materials: selecting full grains; s2, drying: air drying; s3, peeling and breaking the wall; s4, crushing and hydrolyzing: adding compound enzyme; s5, separation: separating the grease from the solid particles; s6, removing phospholipid: adding phospholipase; s7, filtering: filtering the particles; s8, measurement and adjustment: adjusting the pH value; and S9, purifying. Add the hydrolase after through the broken wall, the broken wall can carry out preliminary abolishing to the cell of peanut, increases the speed of cell hydrolysis, can effectively shorten the hydrolysis time of hydrolase, improves the efficiency that peanut oil drawed, passes through the air-dry procedure in advance, makes the concentration of cell inside big partially, causes the phenomenon of lack of water, can make external hydrolase enter into the inside of peanut cell more fast, then abolishes its surperficial tissue for the efficiency of extracting.)

1. A process for extracting peanut oil by an enzymatic method is characterized by comprising the following steps: the method comprises the following steps:

s1, screening materials: removing unqualified peanuts such as mildewed peanuts and worm eaten peanuts from the peanuts, selecting peanuts with full grains, and cleaning the peanuts for later use;

s2, drying: putting the cleaned peanuts into a grinder, grinding the peanuts in advance, then putting the peanuts into hot air, and air-drying the peanuts to remove the moisture in the peanuts;

s3, peeling and wall breaking: peeling the dried peanuts by a fan, and then putting the peanuts into a wall breaking machine to break the wall of the cells of the peanuts;

s4, crushing and hydrolyzing: immersing the wall-broken product in water, adding complex enzyme, adjusting pH of water, and hydrolyzing cells of the peanut;

s5, separation: classifying the hydrolyzed solution by three separators to obtain primary peanut oil;

s6, removing phospholipid: adding phospholipase into the obtained peanut oil, hydrolyzing phospholipid in the peanut oil, and removing the phospholipid;

s7, filtering: filtering to remove granular impurities in the peanut oil to obtain relatively pure peanut oil;

s8, measurement and adjustment: measuring the pH value of all the obtained pH values, and then adjusting the measured pH values, namely deacidifying;

s9, purifying: and (4) putting the obtained peanut oil into a centrifugal machine, and removing redundant liquid impurities inside to obtain the peanut oil with the purity.

2. A process according to claim 1 for the enzymatic extraction of peanut oil, characterized in that: the temperature of air drying in the S2 is 50-60 ℃, stir-frying is carried out in the air drying process, and the drying degree is that the water content of peanuts is 5% -10%.

3. A process according to claim 1 for the enzymatic extraction of peanut oil, characterized in that: and the rotating speed of wall breaking in the S3 is 25000-30000 r/min, and the wall breaking time is 10-20 minutes.

4. A process according to claim 1 for the enzymatic extraction of peanut oil, characterized in that: the compound enzyme in the S4 comprises cellulase, protease and amylase, and can effectively remove substances on the surface of the peanut, so that the oil flows out, the enzymolysis temperature is 40-70 ℃, and the enzymolysis time is 2-4 hours.

5. A process according to claim 1 for the enzymatic extraction of peanut oil, characterized in that: the enzymolysis temperature of the phospholipase in the S6 is 30-40, and the enzymolysis time is 1-2 hours.

6. A process according to claim 1 for the enzymatic extraction of peanut oil, characterized in that: the adjustment range of the deacidification treatment is 7.5-12.

Technical Field

The invention relates to the technical field of peanut oil extraction, in particular to a process for extracting peanut oil by an enzyme method.

Background

Peanuts are important oil crops in China, and the oil content is generally over 45%. The traditional methods for preparing the fragrant peanut oil mainly comprise two methods, one method is that a seed frying machine is used for pressing, peanut kernels are placed into a roller frying pan to be fried, then oil is prepared by pressing, and peanut oil is obtained after refining and impurity removal; the other is pressing by a blank steaming machine, namely crushing peanut kernels, rolling the crushed peanut kernels into blank sheets, directly steaming and frying the blank sheets by steam, squeezing, extracting oil, and refining to obtain the peanut oil.

The oil and fat are easily released from the oil seeds by using enzymes capable of degrading plant oil plant cell walls or enzymes with degradation effect on complexes such as lipoprotein, lipopolysaccharide and the like, including cellulase, pectinase, amylase, protease and the like, and the oil and fat are separated from the oil seeds by using the difference of affinity of non-oil components to oil and water and the difference of specific gravity of oil and water.

However, the existing peanut oil is squeezed by squeezing, the flavor of the peanut oil is affected, and the enzymolysis time for extracting the peanut oil by the existing enzymic method is longer, so that the processing efficiency is lower.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a process for extracting peanut oil by an enzyme method, which solves the problem of low oil yield of the existing peanut oil preparation.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a process for extracting peanut oil by an enzymatic method comprises the following steps:

s1, screening materials: removing unqualified peanuts such as mildewed peanuts and worm eaten peanuts from the peanuts, selecting peanuts with full grains, and cleaning the peanuts for later use;

s2, drying: putting the cleaned peanuts into a grinder, grinding the peanuts in advance, then putting the peanuts into hot air, and air-drying the peanuts to remove the moisture in the peanuts;

s3, peeling and wall breaking: peeling the dried peanuts by a fan, and then putting the peanuts into a wall breaking machine to break the wall of the cells of the peanuts;

s4, crushing and hydrolyzing: immersing the wall-broken product in water, adding complex enzyme, adjusting pH of water, and hydrolyzing cells of the peanut;

s5, separation: classifying the hydrolyzed solution by three separators to obtain primary peanut oil;

s6, removing phospholipid: adding phospholipase into the obtained peanut oil, hydrolyzing phospholipid in the peanut oil, and removing the phospholipid;

s7, filtering: filtering to remove granular impurities in the peanut oil to obtain relatively pure peanut oil;

s8, measurement and adjustment: measuring the pH value of all the obtained pH values, and then adjusting the measured pH values, namely deacidifying;

s9, purifying: and (4) putting the obtained peanut oil into a centrifugal machine, and removing redundant liquid impurities inside to obtain the peanut oil with the purity.

Preferably, the air-drying temperature in the S2 is 50-60 ℃, the stir-frying is carried out in the air-drying process, and the drying degree is that the water content of the peanuts is 5-10%.

Preferably, the rotating speed of wall breaking in the S3 is 25000 to 30000r/min, and the wall breaking time is 10 to 20 minutes.

Preferably, the complex enzyme in the S4 comprises cellulase, protease and amylase, and can effectively remove substances on the surface of the peanut to enable the grease to flow out, wherein the enzymolysis temperature is 40-70 ℃, and the enzymolysis time is 2-4 hours.

Preferably, the enzymolysis temperature of the phospholipase in S6 is 30-40, and the enzymolysis time is 1-2 hours.

Preferably, the adjustment range of the deacidification treatment is 7.5-9.

(III) advantageous effects

The invention provides a process for extracting peanut oil by an enzyme method. The method has the following beneficial effects:

1. according to the invention, the hydrolase is added after wall breaking, so that the cells of the peanut can be initially broken through the wall breaking, the cell hydrolysis speed is increased, the hydrolysis time of the hydrolase can be effectively shortened, and the peanut oil extraction efficiency is improved.

2. According to the invention, the concentration inside the cells is larger through an air drying procedure in advance, so that the water shortage phenomenon is caused, the external hydrolase can enter the interior of the peanut cells more quickly, then the tissue on the surface of the peanut cells is broken, and the extraction efficiency is accelerated.

3. According to the invention, the peanut oil produced by the process is not squeezed, the oil extraction efficiency of the peanut is higher, the starting of large-scale equipment is reduced, and the energy is saved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

the embodiment of the invention provides a process for extracting peanut oil by an enzyme method, which comprises the following steps:

s1, screening materials: removing unqualified peanuts such as mildewed peanuts and worm eaten peanuts from the peanuts, selecting peanuts with full grains, and cleaning the peanuts for later use;

s2, drying: putting the cleaned peanuts into a grinder, grinding the peanuts in advance, then putting the peanuts into hot air, and air-drying the peanuts to remove the moisture in the peanuts;

s3, peeling and wall breaking: peeling the dried peanuts by a fan, and then putting the peanuts into a wall breaking machine to break the wall of the cells of the peanuts;

s4, crushing and hydrolyzing: immersing the wall-broken product in water, adding complex enzyme, adjusting pH of water, and hydrolyzing cells of the peanut;

s5, separation: classifying the hydrolyzed solution by three separators to obtain primary peanut oil;

s6, removing phospholipid: adding phospholipase into the obtained peanut oil, hydrolyzing phospholipid in the peanut oil, and removing the phospholipid;

s7, filtering: filtering to remove granular impurities in the peanut oil to obtain relatively pure peanut oil;

s8, measurement and adjustment: measuring the pH value of the obtained all the components, and then regulating the pH value when the measured pH value is less than or equal to 7.5, namely deacidifying;

s9, purifying: and (4) putting the obtained peanut oil into a centrifugal machine, and removing redundant liquid impurities inside to obtain the peanut oil with the purity.

The air drying temperature in S2 is 50-60 ℃, stir-frying is carried out in the air drying process, the drying degree is that the water content of peanuts is 5% -10%, the wall breaking rotation speed in S3 is 25000-30000 r/min, the wall breaking time is 10-20 minutes, the compound enzyme in S4 comprises cellulase, protease and amylase, substances on the surfaces of the peanuts can be effectively removed, grease flows out, the enzymolysis temperature is 40-70 ℃, the enzymolysis time is 2-4 hours, the enzymolysis temperature of phospholipase in S6 is 30-40, and the enzymolysis time is 1-2 hours.

Example two:

the embodiment of the invention provides a process for extracting peanut oil by an enzyme method, which comprises the following steps:

s1, screening materials: removing unqualified peanuts such as mildewed peanuts and worm eaten peanuts from the peanuts, selecting peanuts with full grains, and cleaning the peanuts for later use;

s2, drying: putting the cleaned peanuts into a grinder, grinding the peanuts in advance, then putting the peanuts into hot air, and air-drying the peanuts to remove the moisture in the peanuts;

s3, peeling and wall breaking: peeling the dried peanuts by a fan, and then putting the peanuts into a wall breaking machine to break the wall of the cells of the peanuts;

s4, crushing and hydrolyzing: immersing the wall-broken product in water, adding complex enzyme, adjusting pH of water, and hydrolyzing cells of the peanut;

s5, separation: classifying the hydrolyzed solution by three separators to obtain primary peanut oil;

s6, removing phospholipid: adding phospholipase into the obtained peanut oil, hydrolyzing phospholipid in the peanut oil, and removing the phospholipid;

s7, filtering: filtering to remove granular impurities in the peanut oil to obtain relatively pure peanut oil;

s8, measurement and adjustment: measuring the pH value of all the obtained solutions, and then adjusting the measured pH value when the pH value is more than or equal to 7.5;

s9, purifying: and (4) putting the obtained peanut oil into a centrifugal machine, and removing redundant liquid impurities inside to obtain the peanut oil with the purity.

The air drying temperature in S2 is 50-60 ℃, stir-frying is carried out in the air drying process, the drying degree is that the water content of peanuts is 5% -10%, the wall breaking rotation speed in S3 is 25000-30000 r/min, the wall breaking time is 10-20 minutes, the compound enzyme in S4 comprises cellulase, protease and amylase, substances on the surfaces of the peanuts can be effectively removed, grease flows out, the enzymolysis temperature is 40-70 ℃, the enzymolysis time is 2-4 hours, the enzymolysis temperature of phospholipase in S6 is 30-40, and the enzymolysis time is 1-2 hours.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.