CN114958946A - Preparation method of fermented red date chelated peptide iron - Google Patents

Preparation method of fermented red date chelated peptide iron Download PDF

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CN114958946A
CN114958946A CN202210226335.XA CN202210226335A CN114958946A CN 114958946 A CN114958946 A CN 114958946A CN 202210226335 A CN202210226335 A CN 202210226335A CN 114958946 A CN114958946 A CN 114958946A
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iron
red date
enzymolysis
chelated
protein
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CN114958946B (en
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陈海滨
宗守玉
何新江
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Shanxi Xiecheng Biotechnology Co ltd
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    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P21/00Preparation of peptides or proteins
    • C12P21/06Preparation of peptides or proteins produced by the hydrolysis of a peptide bond, e.g. hydrolysate products
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K1/00General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
    • C07K1/107General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length by chemical modification of precursor peptides

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Abstract

The invention belongs to the technical field of animal blood products, and relates to a preparation method of fermented red date chelated peptide iron, which comprises the following steps: pulping red dates, adding cellulase for enzymolysis to obtain a jujube pulp enzymolysis liquid; adding haematochrome protein into the jujube pulp enzymatic hydrolysate, and performing homogenization treatment; inoculating yeast and lactobacillus into the homogenized mixed liquid for fermentation for 1-3 d; adding protease into the fermented solution for enzymolysis for 2-4 h; then concentrating and drying to prepare a finished product; the product prepared by the invention is rich in two components of peptide iron and chelating peptide iron, so that the active iron content of the product is greatly improved, and the absorption efficiency of iron elements is effectively improved.

Description

Preparation method of fermented red date chelated peptide iron
Technical Field
The invention belongs to the technical field of animal blood products, and relates to a preparation method of fermentation type red date chelated peptide iron.
Background
Hemoproteins are a large group of metal proteins containing protoporphyrin IX as a prosthetic group, and perform different biological functions according to different protein molecule composition modes of connecting proteins and metal ions on the prosthetic group of the hemoprotein and wrapping heme by a protein polypeptide chain. Ferrohemoglobin, the most prominent component of red blood cells, is composed of globin and heme. The heme molecule is a small molecule with a porphyrin structure, nitrogen atoms on four pyrrole rings in porphyrin are coordinately bound with a ferrous ion at the center of the porphyrin molecule, and nitrogen atoms on indole side chains in histidine residue at the 8 th position in a globin peptide chain are coordinately bound with the ferrous ion from the upper part of the plane of the porphyrin molecule.
The protein is finally decomposed into oligopeptides and free amino acids by the action of digestive enzymes of the gastrointestinal tract. Oligopeptides are more advantageous in absorption than free amino acids and can be absorbed intact into the blood. The polypeptide-porphyrin iron which is the decomposition product of the hemoprotein has strong iron supplementing effect, strong oxidation resistance and health care function. The polypeptide is used as a nutritional factor with multiple functional properties such as oxidation resistance, fatigue resistance and the like, and can also promote the absorption of non-chelated iron.
The red dates are one of recognized foods with the functions of iron supplement and blood supplement, each hundred grams of red dates contain 2.3mg of iron, and simultaneously contain rich vitamin C, but the iron in the red dates is not easy to be utilized and absorbed by human bodies, in the existing products, the red date products are directly mixed with iron chelating peptides to prepare iron supplement products, but the chelated protein peptides are difficult to further promote the absorption of iron elements contained in the red dates, so that part of plant source iron in the products can not be fully absorbed.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides a preparation method of the fermentation type red date chelated peptide iron, solves the problem that the iron element in the red dates is not easy to absorb, and improves the unit content and the utilization rate of the iron supplement product iron by utilizing the combination of the polypeptide of the decomposition product of the existing hemoprotein-porphyrin iron and the iron element in the red dates.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A preparation method of fermentation type red date chelated peptide iron comprises the following steps:
1) pulping red dates, adding cellulase for enzymolysis to obtain a jujube pulp enzymolysis liquid;
2) adding haematochrome protein into the jujube pulp enzymatic hydrolysate, and performing homogenization treatment;
3) inoculating yeast and lactobacillus into the homogenized mixed liquid for fermentation for 1-3 d;
4) adding protease into the fermented solution for enzymolysis for 2-4 h; then concentrating and drying to obtain the finished product.
Preferably, the mass percent of the cellulase is 0.5-2.5%.
Preferably, the enzymolysis time in the step 1) is 2-6 h.
Preferably, the hemoglobin protein is obtained by subjecting animal blood to anticoagulation treatment, centrifugal separation of erythrocytes, erythrocyte breakage, isoelectric point precipitation and centrifugal separation.
Preferably, the homogenization treatment is to homogenize the date pulp enzymolysis liquid added with the haematochrome protein by a homogenizer for 1-2 h.
Preferably, the mass ratio of the jujube pulp enzymolysis liquid to the hemoprotein is 1: 1.5-2.5.
Preferably, the pH of the homogenized mixed liquid is adjusted to 5.0-6.0.
Preferably, after enzymolysis by protease, heating to 70-85 ℃, and treating for 15-30 min; and then filtered.
Preferably, the drying is spray drying.
Compared with the prior art, the invention has the following beneficial effects:
the mechanism of the preparation method of the fermentation type red date chelated iron peptide is as follows: firstly, red dates are subjected to wall breaking pulping, so that plant fibers in the red dates are fully softened, and meanwhile, sugar and protein components are fully dissolved out; further enzymolysis of fibrous components with cellulase to release iron ion and dissolve in the pulp; adding heme protein and homogenizing to break heme protein into finer structures, wherein red date pulp and broken heme protein are fully mixed in the process, iron ions in the date pulp are further chelated with exposed polypeptide after breaking to form stable iron chelated protein, the activity of iron elements in plants is fully activated, and the iron absorption efficiency of the iron elements is improved by chelation with micro-protein; finally, carrying out enzymolysis on the chelated protein obtained by physical treatment by using protease to further carry out enzymolysis on the peptide iron product; the final product is rich in two components of peptide iron and chelating peptide iron, so that the active iron content of the product is greatly improved, and the absorption efficiency of iron elements is effectively improved.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of the present invention are described in detail below with reference to examples, but the scope of protection is not limited thereto.
Example 1
A preparation method of fermentation type red date chelated peptide iron comprises the following specific steps:
1. crushing fresh red dates, adding water accounting for 30% of the mass of the red dates, stirring, pulping, and then adding cellulase into obtained date pulp for enzymolysis to obtain date pulp enzymatic hydrolysate; the cellulase is purchased from Shandong Longman bioengineering Co Ltd, the addition amount is 1.5%, and the enzymolysis temperature is 28-34 ℃.
2. Adding 2 times of heme protein into the jujube pulp enzymatic hydrolysate subjected to enzymolysis;
preparation of hemoprotein: adding anticoagulant into fresh pig blood, centrifuging at 2500r/min for 15min, and removing supernatant to obtain erythrocyte. Adding erythrocyte into 3 times volume of normal saline, centrifuging for 20min after fully stirring, discarding the supernatant, adding normal saline, repeatedly washing, centrifuging for 20min at 3000r/min for the last time, and pouring out the supernatant to obtain solid. Adding equal volume of distilled water and 0.5 volume times of carbon tetrachloride into the solid, performing ultrasonic treatment for 10min, centrifuging at 3000r/min for 15min, pouring out supernatant, performing vacuum evaporation to obtain hemoglobin solid, and storing in a refrigerator at 4 deg.C.
3. Homogenizing the jujube pulp enzymatic hydrolysate added with the haematochrome protein by adopting a homogenizer for 2 h; adjusting the pH value of the homogenized mixed liquid to 5.0-6.0.
4. Inoculating yeast and lactobacillus into the homogenized mixed liquid for fermentation for 1-3 d; the fermentation temperature is 30-32 ℃, and the yeast and the lactobacillus are the conventional commercial strains purchased in the conventional market.
5. After fermentation is finished, adding protease into the fermented solution for enzymolysis for 4 hours; the protease is a commercial strain purchased in the conventional market, and can also be specifically subjected to enzymolysis by using a restriction enzyme; the temperature of enzymolysis is 34-37 ℃;
6. heating to 70-85 deg.C after enzymolysis, and treating for 15-30 min; then filtering and concentrating, and carrying out spray drying to prepare a finished product.
Example 2
A preparation method of fermentation type red date chelated peptide iron comprises the following specific steps:
1. crushing fresh red dates, adding water accounting for 30% of the mass of the red dates, stirring, pulping, and then adding cellulase into obtained date pulp for enzymolysis to obtain date pulp enzymatic hydrolysate; the cellulase is purchased from Shandong Longman bioengineering Co Ltd, the addition amount is 1%, and the enzymolysis temperature is 28-34 ℃.
2. Adding 2 times of heme protein into the jujube pulp enzymatic hydrolysate subjected to enzymolysis;
the hemoprotein was prepared as in example 1.
3. Homogenizing the jujube pulp enzymatic hydrolysate added with the haematochrome protein by a homogenizer for 1.5 h; adjusting the pH value of the homogenized mixed liquid to 5.0-6.0.
4. Inoculating yeast and lactobacillus into the homogenized mixed liquid for fermentation for 2 d; the fermentation temperature is 30-32 ℃, and the yeast and the lactobacillus are the conventional commercial strains purchased in the conventional market.
5. After fermentation is finished, adding protease into the fermented solution for enzymolysis for 3 hours; the protease is a commercial strain purchased in the conventional market, and can also be specifically subjected to enzymolysis by using a restriction enzyme; the temperature of enzymolysis is 34-37 ℃;
6. heating to 70-85 deg.C after enzymolysis, and treating for 15-30 min; then filtering and concentrating, and carrying out spray drying to prepare a finished product.
Example 3
A preparation method of fermentation type red date chelated peptide iron comprises the following specific steps:
1. crushing fresh red dates, adding water accounting for 20% of the mass of the red dates, stirring, pulping, and then adding cellulase into obtained date pulp for enzymolysis to obtain date pulp enzymatic hydrolysate; the cellulase is purchased from Shandong Longman bioengineering Co Ltd, the addition amount is 2.5%, and the enzymolysis temperature is 32-34 ℃.
2. Adding 1 time of heme protein into the jujube pulp enzymatic hydrolysate subjected to enzymolysis;
the hemoprotein was prepared as in example 1.
3. Homogenizing the jujube pulp enzymatic hydrolysate added with the haematochrome protein by a homogenizer for 1.5 h; adjusting the pH value of the homogenized mixed liquid to 5.0-6.0.
4. Inoculating yeast and lactobacillus into the homogenized mixed liquid for fermentation for 3 d; the fermentation temperature is 32 ℃, and the yeast and the lactobacillus are the conventional commercial strains purchased in the conventional market.
5. After fermentation is finished, adding protease into the fermented solution for enzymolysis for 1.5 h; the protease is a commercial strain purchased in the conventional market, and can also be specifically subjected to enzymolysis by using a restriction enzyme; the temperature of enzymolysis is 37 ℃;
6. after the enzymolysis is finished, heating to 85 ℃, and treating for 30 min; then filtering and concentrating, and carrying out spray drying to prepare a finished product.
Experimental examples comparative experiments were conducted on the products obtained in examples 1 to 3, with the currently marketed iron peptide products and the products obtained by adding jujube pulp to the iron peptide products, and the Caco-2 cell model absorption experiments showed that the products had a definite iron absorption utilization rate higher than that of iron peptide and the mixed products of iron peptide and jujube pulp.
Materials and methods
Caco-2 cell line, china type culture collection; caco-2 cells at 25 cm 2 The cell culture medium (DMEM high-sugar medium containing 10% fetal calf serum, 100 U.mL-1 penicillin, 100 U.mL-1 streptomycin, 2 mmol.L-1L-glutamine, target sample) was used in a culture flask at 37 deg.C and 5% CO 2 Culturing in an incubator. Determination of Caco-2 simulated intestinal skin absorption rate: collecting iron ions on the surface of Caco-2 cells, and determining the absorptivity of the iron ions by UPLC.
After the products of examples 1-3 are added, the activity of Caco-2 cells is improved, the iron ions obtained after the simulated digestion of the target sample are absorbed by the Caco-2 cells, the absorption rate of the iron ions is improved along with the prolonging of the transport time, and the absorption rate of the iron ions of example 3 is 1.56 times that of the peptide iron product and is 1.52 times that of the mixed product of the peptide iron and the jujube pulp.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A preparation method of fermentation type red date chelated peptide iron is characterized by comprising the following steps:
1) pulping red dates, adding cellulase for enzymolysis to obtain a jujube pulp enzymolysis liquid;
2) adding haematochrome protein into the jujube pulp enzymatic hydrolysate, and performing homogenization treatment;
3) inoculating yeast and lactobacillus into the homogenized mixed liquid for fermentation for 1-3 d;
4) adding protease into the fermented solution for enzymolysis for 2-4 h; then concentrating and drying to obtain the finished product.
2. The method for preparing the fermented red date chelated peptide iron as claimed in claim 1, wherein the cellulase is 0.5-2.5% by mass.
3. The preparation method of the fermented red date chelated peptide iron as claimed in claim 1 or 2, wherein the enzymolysis time in step 1) is 2-6 h.
4. The method for preparing the fermented red date chelated peptide iron according to claim 1, characterized in that the hemoglobin protein is obtained by subjecting animal blood to anticoagulation treatment, centrifugal separation of erythrocytes, erythrocyte disruption, isoelectric point precipitation and centrifugal separation.
5. The method for preparing fermented red date chelated peptide iron as claimed in claim 1, wherein the homogenization treatment is to homogenize the red date pulp enzymolysis liquid added with haematochrome protein by using a homogenizer for 1-2 h.
6. The method for preparing fermented red date chelated iron peptide according to claim 1, wherein the mass ratio of the red date pulp enzymatic hydrolysate to the heme protein is 1: 1.5-2.5.
7. The method for preparing fermented red date chelated peptide iron as claimed in claim 1, wherein the pH value of the homogenized mixed liquid is adjusted to 5.0-6.0.
8. The preparation method of the fermented red date chelated peptide iron according to claim 1, characterized in that, after enzymolysis by protease, the temperature is raised to 70-85 ℃, and the treatment is carried out for 15-30 min; and then filtered.
9. The method for preparing the fermented red date chelated peptide iron according to claim 1, characterized in that the drying is spray drying.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008020260A2 (en) * 2006-08-16 2008-02-21 R-Ko-N Kft. Use of siderophores in prevention of vascular diseases, production of siderophores and qualifying siderophore containing meat-products
CN101664543A (en) * 2009-09-02 2010-03-10 张滨 Hemokinin-iron oral liquid
CN105420323A (en) * 2015-12-23 2016-03-23 吉林大学 Phytochelatin iron supplementation powder containing iron and preparation method of phytochelatin iron supplementation powder
CN105561286A (en) * 2016-01-20 2016-05-11 吉林大学 Red date iron replenishment drink containing peptide and iron-chelating peptide and preparation method
CN107048361A (en) * 2017-04-12 2017-08-18 塔里木大学 A kind of big rue granatum composite enzyme of jujube and preparation method thereof
CN107361270A (en) * 2016-05-12 2017-11-21 洛阳华清天木生物科技有限公司 A kind of preparation method of jujube enzyme beverage
CN108576317A (en) * 2018-04-05 2018-09-28 安徽陆泰电气科技有限公司 A kind of richness iron chelating stone flower tea powder and preparation method thereof
CN114010762A (en) * 2021-11-01 2022-02-08 杭州佰倍优生物科技有限公司 Preparation for improving anemia symptoms and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008020260A2 (en) * 2006-08-16 2008-02-21 R-Ko-N Kft. Use of siderophores in prevention of vascular diseases, production of siderophores and qualifying siderophore containing meat-products
CN101664543A (en) * 2009-09-02 2010-03-10 张滨 Hemokinin-iron oral liquid
CN105420323A (en) * 2015-12-23 2016-03-23 吉林大学 Phytochelatin iron supplementation powder containing iron and preparation method of phytochelatin iron supplementation powder
CN105561286A (en) * 2016-01-20 2016-05-11 吉林大学 Red date iron replenishment drink containing peptide and iron-chelating peptide and preparation method
CN107361270A (en) * 2016-05-12 2017-11-21 洛阳华清天木生物科技有限公司 A kind of preparation method of jujube enzyme beverage
CN107048361A (en) * 2017-04-12 2017-08-18 塔里木大学 A kind of big rue granatum composite enzyme of jujube and preparation method thereof
CN108576317A (en) * 2018-04-05 2018-09-28 安徽陆泰电气科技有限公司 A kind of richness iron chelating stone flower tea powder and preparation method thereof
CN114010762A (en) * 2021-11-01 2022-02-08 杭州佰倍优生物科技有限公司 Preparation for improving anemia symptoms and preparation method thereof

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