CN106589052B

CN106589052B - Method for degreasing and dehydrating silybum marianum seed kernel protein coarse powder

Info

Publication number: CN106589052B
Application number: CN201710029837.2A
Authority: CN
Inventors: 武俊明; 付廷明; 吴春芳
Original assignee: Zhongxing Pharm Co ltd Jiangsu
Current assignee: Zhongxing Pharm Co ltd Jiangsu
Priority date: 2017-01-16
Filing date: 2017-01-16
Publication date: 2020-06-23
Anticipated expiration: 2037-01-16
Also published as: CN106589052A

Abstract

The invention discloses a method for degreasing and dehydrating milk thistle kernel protein coarse powder. The whole production process of the silybum marianum seed kernel protein coarse powder has no residue of trace elements such as high temperature and heavy metals which are unfavorable for human bodies, and the method has the advantages of simple production process, suitability for industrialization, high yield, less waste, high stability of the obtained crude protein and difficult deterioration.

Description

Method for degreasing and dehydrating silybum marianum seed kernel protein coarse powder

Technical Field

The invention belongs to the field of traditional Chinese medicine preparation, and particularly relates to a method for degreasing and dehydrating silybum marianum seed protein coarse powder.

Background

The amino acid composition of the protein component of the silybum marianum seeds is reasonable and has complete varieties and is rich in glutamic acid in literature reports. Wherein the globulin has an amino acid score of up to 83 and the prolamin has a minimum of 53; the protein efficiency ratio of gluten is highest, the in vitro digestibility of albumin and the amino acid fraction corrected by the protein digestibility are highest and reach 2.55 percent and 0.73 percent respectively; the albumin in each protein component has the best solubility, foamability and emulsibility, and the gluten has the highest oil retention property. The silybum marianum kernel coarse powder is a natural compound nutrient for improving the human immune function, however, because the silybum marianum kernel contains 30 to 37 percent of grease and 5 to 15 percent of water, if the crude protein cannot be removed cleanly, not only can the crude protein deteriorate rapidly, but also the crude protein can bring adverse effects to the surrounding environment, so that for a long time, people adopt organic solvents to extract and separate the grease in the silybum marianum kernels, although the oil separation effect meets the requirement, the organic solvent residue causes the safety of the silybum marianum kernels to be influenced to a certain extent, physical methods such as a screw oil press are adopted for directly pressing oil, when the grease in the silybum marianum kernels is extruded by a screw oil press, the fluidity of the silybum marianum kernels can be increased, more than 5% of silybum marianum oil and water are remained in the kernels, so that crude protein of the silybum marianum kernels cannot be well reserved, and the phenomenon of rancidity still occurs.

Disclosure of Invention

The purpose of the invention is as follows: in order to solve the technical problem, the invention provides a method for degreasing and dehydrating silybum marianum seed protein coarse powder.

The technical scheme is as follows: in order to realize the technical purpose, the invention provides a method for degreasing and dehydrating silybum marianum seed protein coarse powder, which comprises the following steps:

(1) moistening: putting silybum marianum seeds in a mixing barrel type mixer, weighing absolute ethyl alcohol with the weight of 10-20% of that of the silybum marianum seeds, adding the absolute ethyl alcohol into the mixer, fully mixing, putting the mixture into a clean plastic bag, and moistening the mixture to ensure that the surface of the silybum marianum seeds generates astringent phenomenon; the step can reduce the fluidity of the silybum marianum seeds;

(2) degreasing and dehydrating: squeezing the processed silybum marianum seeds by a screw oil press at the temperature of 120-160 ℃, wherein the pressure in the squeezing process is kept not to be reduced to zero scale according to the pointer of a voltmeter of the screw oil press, and removing silybum marianum oil and partial water in the silybum marianum seeds by 1-2 times of squeezing to obtain a silybum marianum seed protein coarse cake, wherein the water content of the coarse cake is 5-10%;

(3) drying and sterilizing: taking the milk thistle seed kernel protein crude cake obtained in the step (2), carrying out microwave vacuum drying to remove water in the milk thistle seed kernel protein crude cake and sterilizing to ensure that the water content is below 5%;

(4) crushing: and (3) crushing the silybum marianum seed protein coarse cake to be treated, and sieving the crushed silybum marianum seed protein coarse cake with a 60-mesh sieve to obtain degreased and dehydrated silybum marianum seed protein coarse powder.

Preferably, in the step (1), the moistening time is 1-2 hours.

Preferably, in the step (3), the microwave drying conditions are as follows: the microwave temperature is controlled at 100-130 ℃, the vacuum is higher than-0.1 MPa to-0.08 MPa, and the time is 5-10 minutes. The method according to claim 1, wherein in the step (3), the microwave drying conditions are as follows:

has the advantages that: compared with the prior art, the invention has the following advantages:

(1) the whole production process of the silybum marianum seed protein coarse powder has no residue of high temperature, heavy metals and other trace elements which are unfavorable to human bodies;

(2) the production process is simple and is suitable for industrialization;

(3) the yield is high, and the waste is less;

(4) the crude protein has high stability and is not easy to deteriorate;

(5) the oil content of the silybum marianum seeds after being squeezed by the method is controlled to be 2-4 percent, the moisture index is controlled to be below 5 percent, and no organic solvent is left.

Drawings

Fig. 1 is a schematic flow chart of the method for defatting and dehydrating milk thistle kernel protein coarse powder provided by the invention.

Detailed Description

As shown in figure 1, the invention provides a method for degreasing and dehydrating milk thistle seed kernel protein coarse powder, which comprises the steps of moistening milk thistle seed kernels with absolute ethyl alcohol, squeezing the moistened milk thistle seed kernels, removing part of water and grease to obtain milk thistle seed kernel protein coarse cake, and crushing the milk thistle seed kernel protein coarse cake to obtain milk thistle seed kernel protein coarse powder.

The present invention will be described in detail below with reference to specific examples.

Example 1

Taking 30kg of fresh silybum marianum seed kernels, placing the fresh silybum marianum seed kernels into a 100L stirrer, adding 3kg of absolute ethyl alcohol (food grade), stirring for 5 minutes to fully and uniformly mix the absolute ethyl alcohol and the silybum marianum kernels, and placing the mixture into a clean plastic bag to be moistened for 1 hour for standby.

Squeezing the moistened silybum marianum seed kernels once by a screw oil press at the temperature of 120 ℃ to obtain 20kg of silybum marianum seed kernel protein coarse cake.

And (3) putting 20kg of the crude silybum marianum seed kernel protein cake into a microwave vacuum drying oven, setting the microwave temperature at 100 ℃, and drying for 5 minutes under the vacuum degree of-0.1 MPa to obtain 19.8kg of the crude silybum marianum seed kernel protein cake.

Taking 19.8kg of the milk thistle seed kernel protein coarse cake, crushing and sieving by a 60-mesh sieve to obtain 19kg of milk thistle seed kernel protein coarse powder.

Example 2:

taking 30kg of fresh silybum marianum seed kernels, placing the fresh silybum marianum seed kernels into a 100L stirrer, adding 6kg of absolute ethyl alcohol (food grade), stirring for 5 minutes to fully and uniformly mix the absolute ethyl alcohol and the silybum marianum kernels, and placing the mixture into a clean plastic bag to be moistened for 2 hours for standby.

Squeezing the moistened semen Silybi Mariani with screw oil press at 150 deg.C for 2 times to obtain semen Silybi Mariani protein coarse cake 18.3 kg.

And (3) placing the silybum mariamum seed protein crude cake 18.3kg in a microwave vacuum drying oven, setting the microwave temperature at 130 ℃ and the vacuum degree at-0.08 MPa, and drying for 5 minutes to obtain the silybum mariamum seed protein crude cake 18 kg.

Taking 18kg of milk thistle seed kernel protein coarse cake, crushing and sieving by a 60-mesh sieve to obtain 17kg of milk thistle seed kernel protein coarse powder.

Example 3

Taking 30kg of fresh silybum marianum seed kernels, placing the fresh silybum marianum seed kernels into a 100L stirrer, adding 5kg of absolute ethyl alcohol (food grade), stirring for 5 minutes to fully and uniformly mix the absolute ethyl alcohol and the silybum marianum kernels, and placing the mixture into a clean plastic bag to be moistened for 1 hour for standby.

Squeezing the moistened silybum marianum seed kernels once by a screw oil press at the squeezing temperature of 140 ℃ to obtain 19kg of silybum marianum seed kernel protein coarse cake.

And (3) putting 19kg of the crude silybum marianum seed kernel protein cake into a microwave vacuum drying oven, setting the microwave temperature at 120 ℃, and drying for 5 minutes under the vacuum degree of-0.1 MPa to obtain 18.7kg of the crude silybum marianum seed kernel protein cake.

Taking 18.7kg of silybum marianum seed protein coarse cake, crushing and sieving by a 60-mesh sieve to obtain 18kg of silybum marianum seed protein coarse powder.

The preparation procedures and properties of the above examples 1 to 3 are listed below, wherein the stability test was performed according to the requirements of the accelerated test.

Content of the art	Example 1	Example 2	Example 3
				Semen Silybi Mariani amount (kg)	30	30	30
Alcohol amount for moistening (kg)	3	6	5
				Number of squeezing operations	1	2	1
Oil discharge	9.5	11	10.2
				Water content of crude protein after pressing (%)	5	2	3
Microwave temperature (. degree.C.)	100	130	120
				Degree of vacuum	-0.1MPa	-0.08MPa	-0.08MPa
Number of meshes of sieve	60	60	60
				Amount of crude protein (kg)	19	17	18
Recovery (%)	63	56	60
				Stability survey	7 months old	12 months old	8 months old

Claims

1. A method for degreasing and dehydrating silybum marianum seed kernel protein coarse powder is characterized by comprising the following steps:

(1) moistening: putting silybum marianum seeds in a mixing drum type mixer, weighing absolute ethyl alcohol with the weight of 10-20% of that of the silybum marianum seeds, adding the absolute ethyl alcohol into the mixer, fully mixing, putting the mixture into a clean plastic bag, and moistening the mixture to ensure that the surface of the silybum marianum seeds generates a phenomenon of astringency, wherein the moistening time is 1-2 hours;

(2) degreasing and dehydrating: squeezing the processed silybum marianum seed kernels by a screw oil press at the temperature of 120-160 ℃, and removing silybum marianum oil and partial water in the silybum marianum seed kernels by 1-2 times of squeezing to obtain a silybum marianum seed kernel protein coarse cake, wherein the water content of the coarse cake is 5-10%;

(3) drying and sterilizing: taking the milk thistle seed kernel protein crude cake obtained in the step (2), performing microwave vacuum drying to remove water in the milk thistle seed kernel protein crude cake, and sterilizing to ensure that the water content is below 5%, wherein the microwave drying condition is as follows: controlling the microwave temperature at 100-130 ℃, and controlling the vacuum to be higher than-0.058 MPa to-0.08 MPa for 5-10 minutes;