CN115487288A - Almond peptide oral liquid and preparation method thereof - Google Patents

Almond peptide oral liquid and preparation method thereof Download PDF

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CN115487288A
CN115487288A CN202211191442.XA CN202211191442A CN115487288A CN 115487288 A CN115487288 A CN 115487288A CN 202211191442 A CN202211191442 A CN 202211191442A CN 115487288 A CN115487288 A CN 115487288A
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oral liquid
almond peptide
almond
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CN115487288B (en
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顾欣
丛之慧
李迪
周法婷
张彭
李开凤
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Chongqing Three Gorges University
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Abstract

A preparation method of an almond peptide oral liquid for inhibiting activity of alpha-glucosidase is characterized in that almond peptide nanoparticles, erythritol, glycerol, pectin, citric acid, sodium carboxymethylcellulose, sodium cyclamate and purified water are used, wherein the almond peptide nanoparticles are prepared by embedding almond peptide proline-arginine (PR) and then freezing and drying. The embedding rate is improved by embedding the almond peptide PR with alpha glucosidase activity inhibition, the embedding rate reaches 88.09%, the particle size of the prepared almond peptide nano particles is as small as 105.3nm, the almond peptide nano particles are neutral and stable in oral liquid, the alpha glucosidase activity inhibition performance is effectively kept and not reduced, the stability of the embedded shell is excellent, the phenomenon of falling off and forming precipitate does not occur in pure 24 months, and the stable taste of the oral liquid is ensured. The finally prepared almond peptide oral liquid is digested by gastrointestinal tracts, and the inhibition rate of the almond peptide oral liquid on the activity of alpha glucosidase stably reaches over 64.51 percent.

Description

Almond peptide oral liquid and preparation method thereof
Technical Field
The invention relates to the technical field of biology, in particular to an almond peptide oral liquid and a preparation method thereof.
Background
Diabetes is a common metabolic disease, and the incidence of diabetes is on the rise worldwide with the increase of living standard and the increase of the elderly population. Diet therapy is the most important and basic treatment measure for various types of diabetes, and the active search for foods which are beneficial to controlling blood sugar from daily diet becomes a hot spot of food science research at present.
Besides reducing blood sugar by insulin, the alpha-glucosidase inhibitor can also be used, and is used for delaying the decomposition and digestion of complex carbohydrate and disaccharide, delaying and reducing the absorption of glucose by intestinal lumen, mainly reducing the postprandial blood sugar effect without affecting the utilization of glucose and the secretion of insulin, can be combined with insulin, and can improve the blood sugar reduction effect by mechanism complementation by inhibiting the glucosidase activity of decomposing oligosaccharide into monosaccharide in small intestinal villus. At present, acarbose, voglibose and the like are common alpha-glucosidase inhibitors, for example, acarbose mainly inhibits alpha-amylase, and voglibose mainly inhibits maltase and sucrase. However, the long-term administration of the medicine can cause nausea, vomiting, anorexia and the like, and can cause abdominal distension, abdominal pain, diarrhea, gastrointestinal spastic pain, intractable constipation and the like. Therefore, many patients with other gastrointestinal diseases, liver and kidney functions and other diseases cannot use the alpha-glucosidase inhibitor, so that the use of the alpha-glucosidase inhibitor is greatly limited.
The semen Armeniacae amarum has biological activities of lowering blood sugar, reducing blood lipid, lowering blood pressure, resisting cancer, etc. The almond can reduce cholesterol, promote cardiovascular health and control blood sugar level when being eaten frequently, and researches show that the almond polypeptide with high dose has the function of inhibiting the reduction of insulin in the aspect of assisting the blood sugar reduction by the bioactive polypeptide. However, there are many routes that can cause blood glucose decline, and the hypoglycemic activity of almond polypeptide has a significant relationship with the structure of the polypeptide. Therefore, the almond peptide with high-efficiency inhibition effect on the alpha-glucosidase is sought, and the almond peptide is prepared into the oral liquid which is convenient to carry and take and is beneficial to the diabetic patients to take.
Disclosure of Invention
The invention aims to provide an almond peptide oral liquid capable of efficiently inhibiting the activity of alpha-glucosidase.
The invention also aims to provide a preparation method of the almond peptide oral liquid.
The purpose of the invention is realized by the following technical scheme:
an almond peptide oral liquid for inhibiting activity of alpha-glucosidase is characterized in that: the almond peptide nano particles are prepared by embedding almond peptide proline-arginine (PR) by adopting bovine serum albumin, ferritin and chitosan, and then freezing and drying.
Further, the almond peptide nano-particles comprise, by mass, 1-2% of erythritol, 0.03-0.04% of glycerol, 0.1-0.3% of pectin, 0.01-0.03% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance of purified water.
Further, the embedding treatment is to sequentially dissolve bovine serum albumin, ferritin and chitosan in a phosphate buffer solution with the pH value of 6 to prepare a mixed solution, standing overnight at 4 ℃, freeze-drying to form freeze-dried powder, heating and preserving heat the freeze-dried powder to form a compound, dissolving the compound in purified water to form a solution, adding silicon dioxide and polyethylene glycol, adjusting the pH value, heating and preserving heat again, cooling, adding almond peptide PR, carrying out ultrasonic treatment under an ice bath condition, finally adjusting the pH value, centrifuging and freeze-drying.
Further, the mass ratio of the chitosan, the ferritin and the bovine serum albumin is 3-5.
Further, the mass ratio of the silicon dioxide to the polyethylene glycol is 2.3-0.6, wherein the silicon dioxide accounts for 2-3% of the mass of the compound.
Further, the heating and heat preservation is to heat the freeze-dried powder to 70-80 ℃ and preserve heat for 48 hours to form a compound.
Further, the above compound is dissolved in purified water to form a solution with a concentration of 2-4mg/mL, the pH is adjusted to 5-6, the solution is heated to 90-100 ℃, and the temperature is maintained for 30min.
Further, the mass ratio of the PR to the freeze-dried powder is 1.
Further, the ultrasonic power of the ultrasonic is 200W, specifically 10s of ultrasonic every 10s, and the total time length is 6-10min.
Further, after the ultrasonic treatment, the pH was adjusted to 4 to 6, and after standing for 10min, the mixture was centrifuged at 3500rpm for 10min.
A preparation method of almond peptide oral liquid for inhibiting activity of alpha-glucosidase is characterized in that: the almond peptide nano particle is prepared by embedding almond peptide proline-arginine (PR) and then freezing and drying.
Further, the almond peptide nano-particles comprise, by mass, 1% of erythritol, 0.03-0.04% of glycerol, 0.1-0.3% of pectin, 0.01-0.03% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance purified water.
Further, the embedding treatment is to sequentially dissolve bovine serum albumin, ferritin and chitosan in a phosphate buffer solution with the pH value of 6 to prepare a mixed solution, to stand overnight at 4 ℃, then freeze-dry to form freeze-dried powder, heat and preserve the heat of the freeze-dried powder to form a compound, then dissolve the compound in purified water to form a solution, add silicon dioxide and polyethylene glycol, adjust the pH value to 5-6, heat and preserve the heat again, add almond peptide PR after cooling, perform ultrasonic treatment under the ice bath condition, finally adjust the pH value to 4-6, and perform freeze-drying after centrifugation.
In the preparation process, the amygdalin PR is directly used as a raw material to be prepared into the oral liquid, the amygdalin PR can be gradually disabled after being stored for a long time in the oral liquid, the inhibition effect on alpha-glucosidase is gradually reduced, and the inhibition effect on the alpha-glucosidase is also reduced when the PR directly enters the gastrointestinal tract. Therefore, the method considers that the almond peptide is firstly embedded and then prepared into the oral liquid, but after the chitosan and the bovine serum albumin are compositely embedded, the shell for embedding the almond peptide gradually falls off in the long-term storage process of the oral liquid, and the almond peptide is deposited in the oral liquid, so that the oral liquid becomes turbid, and the almond peptide is exposed again, and the inhibition effect of the almond peptide on the alpha-glucosidase cannot be ensured for a long time.
According to the invention, the newly added ferritin is compounded with the bovine serum albumin and then compounded with the chitosan, and through the formation of a hydrogen bond effect between the amino group of the bovine serum albumin and the hydroxyl group of the chitosan, the free amino group of the amino acid side chain in the ferritin molecule reacts with the carbonyl group at the reduction end of the chitosan molecule, so that a bovine serum albumin-chitosan-ferritin compound is formed, and the structural stability formed between polysaccharide and protein is further improved. And secondly, adding silicon dioxide and polyethylene glycol, adsorbing the silicon dioxide and chitosan through electrostatic attraction under a specific pH value, and heating and preserving heat to form colloid, so that complete and stable embedding of the almond peptide PR is realized, and the embedding rate is obviously improved. And finally, freeze drying is carried out to further stabilize the embedded structure, the particle size of the prepared almond peptide nano particles is further controlled by combining multiple embedding and freeze drying, and the small particle size ensures that the almond peptide nano particles keep stable characters and are not easy to decompose in aqueous solution for a long time. After the nano particles are formed by embedding, the inhibition effect of the prepared almond peptide PR nano composite particles on alpha-glucosidase is obviously improved compared with PR without embedding. In addition, arginine in PR is basic amino acid, so that the antibacterial performance of chitosan can be further enhanced, and other antibacterial components do not need to be added into oral liquid.
Further, the chitosan, the ferritin and the bovine serum albumin are dissolved in a phosphate buffer solution to prepare a mixed solution with a total mass concentration of 1% according to a mass ratio of 3-5.
Further, the mass ratio of the silica to the polyethylene glycol is 2.3-0.6, wherein the silica accounts for 2-3% of the mass of the compound.
Further, the heating and heat preservation are to heat the freeze-dried powder to 70-80 ℃ and preserve the temperature for 48h to form the compound.
Further, the above compound is dissolved in purified water to form a solution with a concentration of 2-4mg/mL, the pH is adjusted to 5-6, the solution is heated to 90-100 ℃, and the temperature is maintained for 30min.
Further, the mass ratio of the PR to the freeze-dried powder is 1.
Further, the ultrasonic power of the ultrasonic is 200W, specifically 10s of ultrasonic every 10s, and the total time length is 6-10min.
Further, after the ultrasonic treatment, the pH was adjusted to 4 to 6, and after standing for 10min, the mixture was centrifuged at 3500rpm for 10min.
Most particularly, the preparation method of the almond peptide oral liquid for inhibiting the activity of alpha-glucosidase is characterized by comprising the following steps:
step 1: dissolving chitosan, ferritin and bovine serum albumin in a mass ratio of 3-5 to 0.5, dissolving in a phosphate buffer solution with pH of 6 to prepare a mixed solution with a total mass concentration of 1%, standing overnight at 4 ℃, then freeze-drying to form freeze-dried powder, preserving heat of the freeze-dried powder at 70-80 ℃ for 48h to form a compound, dissolving the compound in purified water to form a solution with a concentration of 2-4mg/mL, adding silicon dioxide and polyethylene glycol, adjusting the pH to 4-6, heating to 90-100 ℃, preserving heat for 30min, cooling, adding almond peptide PR, PR and freeze-dried powder in a mass ratio of 1;
step 2: the oral liquid is prepared from 1% of almond peptide nanoparticles, 0.03-0.04% of erythritol, 0.1-0.3% of glycerol, 0.01-0.03% of pectin, 0.02% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance of purified water.
The invention has the following technical effects:
the embedding rate is improved by embedding the almond peptide PR with alpha glucosidase activity inhibition, the embedding rate reaches 88.09%, the particle size of the prepared almond peptide nano particles is as small as 105.3nm, the almond peptide nano particles are neutral and stable in oral liquid, the alpha glucosidase activity inhibition performance is effectively kept and not reduced, the stability of the embedded shell is excellent, the almond peptide PR is pure for 24 months, the phenomenon of falling off and forming sediment turbidity is avoided, and the stable taste of the oral liquid is ensured. The finally prepared almond peptide oral liquid is digested by gastrointestinal tracts, and the inhibition rate of the alpha glucosidase activity stably reaches over 64.51 percent.
Drawings
FIG. 1: the amygdalin nanoparticles prepared in example 3 and comparative example 1 simulated the inhibition rate of α -glucosidase activity after gastrointestinal digestion.
Detailed Description
The present invention is described in detail below by way of examples, it should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and those skilled in the art can make some insubstantial modifications and variations to the present invention based on the above disclosure.
The almond peptide PR (proline-arginine) used in the invention is synthesized by Siranavir biotechnology limited in China, and the structural formula is as follows:
Figure BDA0003869589230000061
the purity reaches more than 95 percent.
Through verification of various experiments, the amygdalin PR has an excellent effect of inhibiting the activity of alpha-glucosidase, and the specific steps are as follows:
120. Mu.L of phosphate buffer (pH 6.7, 0.5M), 20. Mu.L of sample solution (gradient of concentration change of 2mg/mL, 4mg/mL, 6mg/mL, 8mg/mL, 10mg/mL and 12mg/mL in this order)50 mu L of alpha-glucosidase (0.5 mu/mL) and 50 mu L of substrate 4-nitrobenzene-beta-d-glucopyranoside (PNPG) are placed in a 96-well plate, reacted for 1h at 37 ℃, and Na is added 2 CO 3 (0.67M) 50. Mu.L of the reaction was stopped, and the absorbance of the solution was measured at 405 nm. Data from three independent experiments were collected. The formula for the inhibition activity calculation is as follows:
Figure BDA0003869589230000062
wherein Ai is the absorbance of a blank portion of the sample replaced with an equal amount of buffer;
AB is the absorbance of the sample;
AC is the absorbance of the control when the sample and PNPG solution were replaced with equal amounts of buffer.
The in vitro alpha-glucosidase inhibition ability IC of the amygdalin PR is calculated by the formula 50 The value was 19.79. + -. 0.006. Mu.M.
Example 1
A preparation method of an almond peptide oral liquid for inhibiting the activity of alpha-glucosidase comprises the following steps:
step 1: dissolving chitosan, ferritin and bovine serum albumin in a mass ratio of 3.2;
and 2, step: the oral liquid is prepared from 1% of almond peptide nanoparticles, 0.03% of erythritol, 0.3% of glycerol, 0.01% of pectin, 0.02% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance of purified water.
The oral liquid prepared by the embodiment is stored for 24 months at normal temperature, the properties are not changed, the color is uniform and transparent, the taste is stable, and the oral liquid does not have any precipitation and delamination phenomena.
Example 2
A preparation method of almond peptide oral liquid for inhibiting activity of alpha-glucosidase comprises the following steps:
step 1: dissolving chitosan, ferritin and bovine serum albumin at a mass ratio of 5.5, dissolving in a phosphate buffer solution at a pH of 6 to prepare a mixed solution with a total mass concentration of 1%, standing overnight at 4 ℃, freeze-drying to form a freeze-dried powder, preserving heat of the freeze-dried powder at 70 ℃ for 48 hours to form a compound, dissolving the compound in purified water to form a solution with a concentration of 3mg/mL, adding silicon dioxide and polyethylene glycol, adjusting the pH to 6, heating to 95 ℃ and preserving heat for 30min, cooling, adding almond peptide PR, PR and freeze-dried powder at a mass ratio of 1;
step 2: the oral liquid is prepared from 1% of almond peptide nanoparticles, 0.04% of erythritol, 0.3% of glycerol, 0.03% of pectin, 0.02% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance of purified water.
The oral liquid prepared by the embodiment is stored for 24 months at normal temperature, the properties are not changed, the color is uniform and transparent, the taste is stable, and any precipitation and layering phenomena do not occur in the oral liquid.
Example 3
A preparation method of an almond peptide oral liquid for inhibiting the activity of alpha-glucosidase comprises the following steps:
step 1: dissolving chitosan, ferritin and bovine serum albumin in a mass ratio of 4.3;
step 2: the oral liquid is prepared from 1% of almond peptide nanoparticles, 0.04% of erythritol, 0.2% of glycerol, 0.02% of pectin, 0.02% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance of purified water.
The oral liquid prepared by the embodiment is stored for 24 months at normal temperature, the properties are not changed, the color is uniform and transparent, the taste is stable, and the oral liquid does not have any precipitation and delamination phenomena.
Comparative example 1:
compared with example 3, in the scheme, the compound is prepared by replacing ferritin with bovine serum albumin, the mass ratio of chitosan to bovine serum albumin is 4.
When the oral liquid prepared by the embodiment is stored for 12 months in a normal temperature environment, the properties of the oral liquid change, the oral liquid begins to be turbid, and fine precipitates appear on the flat bottom, so that the test is not continued.
Comparative example 2:
compared with example 3, in the scheme, the compound is prepared by substituting ferritin for bovine serum albumin, the mass ratio of chitosan to ferritin is 4.
When the oral liquid prepared by the embodiment is stored for 9 months in a normal-temperature environment, the properties of the oral liquid change, the oral liquid is turbid, and fine precipitates appear on the flat bottom, so that the test is not continued.
Comparative example 3:
in contrast to example 3, in this protocol no pH adjustment was performed or freeze drying was not performed after sonication in step 1, and the remaining steps were in accordance with example 3.
The oral liquid prepared by the scheme is stored for 12 months at normal temperature, the properties of the oral liquid change, the oral liquid is turbid, fine precipitates appear on the flat bottom, and the test is not continued.
In the preparation process of each scheme, 100 mu L of filtrate obtained by centrifuging after ultrasonic treatment is diluted by 10 times, and an ultraviolet spectrophotometer is adopted to measure the embedding rate. The maximum absorbance of the almond peptide at 214nm is obtained through ultraviolet scanning, so the absorbance is measured at 214nm, the concentration of the free almond peptide is obtained through calculation, and the embedding rate is obtained, and the result is shown in table 1.
Embedding Rate (%) Nanoparticle size (nm) Absolute potential (mV)
Example 1 86±2.09 117.4±2.15 11.21±0.97
Example 2 84±1.73 124.9±3.21 10.72±1.05
Example 3 87±1.94 105.3±5.46 11.54±1.34
Comparative example 1 70±2.12 260.4±6.25 6.28±2.23
Comparative example 2 68±1.85 239.5±4.67 4.06±1.19
Comparative example 3 76±3.34 177.1±4.49 8.07±1.26
The electric potential reflects the stability of the nano particles to a certain extent, the positive and negative indicate the positive and negative of the charged electric charges, the larger the absolute value of the electric potential is, the higher the stability of the nano particles is, and the better the stability of the properties and performance of the prepared oral liquid is.
The amygdalin PR without any embedding treatment, the amygdalin nanoparticles prepared in example 3 of the present invention, and the amygdalin nanoparticles prepared in comparative example 1 were formulated into solutions of the same concentration, and after simulating in vitro gastrointestinal tract digestion, the change in the α -glucosidase inhibitory activity of the product was measured:
the first step is as follows: simulating the gastrodigestive tract
Regulating pH value of the almond peptide nanoparticle solution to 2.0 with 1mol/L hydrochloric acid, heating in water bath to 37 deg.C, adding pepsin (the addition amount is 5% of almond peptide nanoparticle content), stirring, and performing enzymolysis at constant temperature for 2 hr. In the process, samples are taken at 0 hour, 0.5 hour, 1.0 hour, 1.5 hour and 2.0 hours respectively, immediately put into a boiling water bath to inactivate enzyme for 10min, and after cooling, the alpha-glucosidase inhibitory activity of the samples digested by gastric digestive enzyme is measured.
The second step is that: simulation intestinal digestive tract
After the sample is digested by the enzyme system of the gastric digestive tract for 2 hours, the pH value of the system is adjusted to 7.0 by using 5mol/L NaOH solution. Heating to 37 deg.C, adding trypsin (5% of polypeptide content), stirring, and performing enzymolysis at constant temperature for 2 hr. In the process, samples are taken at 3.0, 4.0, 5.0 and 6.0 hours respectively, the samples are immediately placed in a boiling water bath for enzyme deactivation for 10min, and after cooling, the alpha-glucosidase inhibitory activity of the samples after digestion by gastric digestive enzymes is measured.
The inhibitory activity on alpha-glucosidase after the three samples simulated the digestive process of gastrointestinal digestive enzymes is shown in figure 1. After the three samples enter the stomach and the single PR enters the intestinal tract after being digested by the gastric tract, the inhibition rate of the alpha-glucosidase is obviously reduced, and the free PR is enzymolyzed by digestive enzymes of the intestinal tract, so that the absorption rate is reduced, and the inhibition activity of the alpha-glucosidase is influenced. After the PR nanoparticle solution enters the gastric tract, the embedded PR is released again, and the alpha-glucosidase inhibition rate in the gastric tract is lower than that of the PR alone due to the loss of the embedded PR. However, after entering the stomach, the embedded shell on the surface of the almond peptide PR plays a role in slow release protection, and the PR cannot be subjected to enzymolysis by gastric digestive enzyme, so that the alpha-glucosidase inhibition rate of the nanoparticle solution in the stomach is obviously improved compared with the PR. After the almond peptide nanoparticle enters the intestinal tract, the shell with the nanoparticle is used as a barrier, PR (platelet-rich plasma) is still not degraded by intestinal digestive enzymes, so that the alpha-glucosidase inhibition rate is in a gentle state, the alpha-glucosidase inhibition activity of the almond peptide nanoparticle in the intestinal tract is remarkably enhanced compared with PR, and the alpha-glucosidase inhibition rate of the almond peptide nanoparticle prepared in example 3 is stably up to over 64.51% after the almond peptide nanoparticle is digested by the gastrointestinal tract. However, as can be seen from comparative example 1, the shell formed by compounding single bovine serum albumin with chitosan has a poorer slow-release effect than the shell formed by compounding ferritin and bovine serum albumin with chitosan, and the dissolution rate of the shell is higher, so that the amygdalin PR is exposed more quickly, and the inhibition of the amygdalin PR on alpha-glucosidase tends to decrease to 41.19% within 6h, while the inhibition rate of the amygdalin PR without any embedding on alpha-glucosidase decreases to 39.62% after 6 h.

Claims (10)

1. A preparation method of almond peptide oral liquid for inhibiting activity of alpha-glucosidase is characterized in that: the almond peptide nano particles are prepared from almond peptide proline-arginine (PR) through embedding treatment and freeze drying.
2. The method for preparing an almond peptide oral liquid according to claim 1, wherein the almond peptide oral liquid comprises the following components: according to the mass percentage, the almond peptide nano-particles are 1%, the erythritol is 0.03-0.04%, the glycerol is 0.1-0.3%, the pectin is 0.01-0.03%, the citric acid is 0.02%, the sodium carboxymethylcellulose is 0.02%, the sodium cyclamate is 0.03%, and the balance is purified water.
3. The method for preparing an almond peptide oral liquid according to claim 1 or 2, wherein: the embedding treatment comprises the steps of sequentially dissolving bovine serum albumin, ferritin and chitosan in a phosphate buffer solution with the pH value of 6 to prepare a mixed solution, standing overnight at 4 ℃, freeze-drying to form freeze-dried powder, heating and preserving heat the freeze-dried powder to form a compound, dissolving the compound in purified water to form a solution, adding silicon dioxide and polyethylene glycol, adjusting the pH value to 5-6, heating and preserving heat again, cooling, adding almond peptide PR, carrying out ultrasonic treatment under an ice bath condition, finally adjusting the pH value to 4-6, centrifuging and carrying out freeze-drying.
4. The method for preparing an almond peptide oral liquid according to claim 3, wherein the almond peptide oral liquid comprises the following components: the mass ratio of the chitosan to the ferritin to the bovine serum albumin is (3-5).
5. The method for preparing an almond peptide oral liquid according to claim 3 or 4, wherein the almond peptide oral liquid comprises the following components: the mass ratio of the silicon dioxide to the polyethylene glycol is 2.3-0.6, wherein the silicon dioxide accounts for 2-3% of the mass of the compound.
6. The method of preparing an almond peptide oral liquid of claim 5, wherein: the heating and heat preservation is to heat the freeze-dried powder to 70-80 ℃ and preserve heat for 48h to form the compound.
7. The method of preparing an almond peptide oral liquid of claim 6, wherein: the mass ratio of the PR to the freeze-dried powder is 1.
8. The method of preparing an almond peptide oral liquid of claim 7, wherein: the ultrasonic power of the ultrasonic is 200W, specifically 10s of ultrasonic every 10s, and the total time length is 6-10min.
9. The method of preparing an almond peptide oral liquid of claim 8, wherein: after the ultrasonic treatment, the pH value is adjusted to 4-6, and after standing for 10min, the mixture is centrifuged at 3500rpm for 10min.
10. The preparation method of the almond peptide oral liquid is characterized by comprising the following steps:
step 1: dissolving chitosan, ferritin and bovine serum albumin in a mass ratio of 3-5 to 0.5, dissolving in a pH value of 6, putting into a phosphate buffer solution to prepare a mixed solution with a total mass concentration of 1%, standing overnight at 4 ℃, then freeze-drying to form freeze-dried powder, keeping the temperature of the freeze-dried powder at 70-80 ℃ for 48h to form a compound, dissolving the compound in purified water to form a solution, adding silicon dioxide and polyethylene glycol, adjusting the pH value to 4-6, heating and keeping the temperature, cooling, adding almond peptide PR, PR and freeze-dried powder in a mass ratio of 1 to 3-7, carrying out ultrasonic treatment under ice bath conditions, wherein the specific ultrasonic power is 200W, the ultrasonic treatment lasts 10s every 10s, the total duration is 10min, finally adjusting the pH value to 4-6, centrifuging at 3500rpm for 10min, and then carrying out freeze-drying to form almond peptide nanoparticles, wherein the mass ratio of the silicon dioxide to the polyethylene glycol is 2.3-0.6, and the silicon dioxide accounts for 2-3% of the mass of the compound;
step 2: the oral liquid is prepared from 1% of almond peptide nanoparticles, 0.03-0.04% of erythritol, 0.1-0.3% of glycerol, 0.01-0.03% of pectin, 0.02% of citric acid, 0.02% of sodium carboxymethylcellulose, 0.03% of sodium cyclamate and the balance of purified water.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102048695A (en) * 2009-08-11 2011-05-11 南京大学 Preparation method of protein nanoparticle for in vivo delivery of pharmacologically active agent
WO2014118774A1 (en) * 2013-01-29 2014-08-07 Oshadi Drug Administration Ltd. Pharmaceutical compositions for oral treatment of diabetes
CN107698659A (en) * 2017-11-14 2018-02-16 重庆三峡学院 Wild almond protein sources ɑ Glucosidase inhibitor peptides through protease M enzymolysis and preparation method thereof
US20180116963A1 (en) * 2016-10-28 2018-05-03 Zhejiang Academy Of Forestry Method of preparing albumin nanoparticle carrier wrapping taxane drug
WO2021232614A1 (en) * 2020-05-22 2021-11-25 广东药科大学 Chitooligosaccharide oral liquid and application therefor in preparation of weight loss drugs
CN115093456A (en) * 2022-04-24 2022-09-23 山东省农业科学院 Almond polypeptide with antioxidant activity and extraction method and application thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102048695A (en) * 2009-08-11 2011-05-11 南京大学 Preparation method of protein nanoparticle for in vivo delivery of pharmacologically active agent
WO2014118774A1 (en) * 2013-01-29 2014-08-07 Oshadi Drug Administration Ltd. Pharmaceutical compositions for oral treatment of diabetes
US20180116963A1 (en) * 2016-10-28 2018-05-03 Zhejiang Academy Of Forestry Method of preparing albumin nanoparticle carrier wrapping taxane drug
CN107698659A (en) * 2017-11-14 2018-02-16 重庆三峡学院 Wild almond protein sources ɑ Glucosidase inhibitor peptides through protease M enzymolysis and preparation method thereof
WO2021232614A1 (en) * 2020-05-22 2021-11-25 广东药科大学 Chitooligosaccharide oral liquid and application therefor in preparation of weight loss drugs
CN115093456A (en) * 2022-04-24 2022-09-23 山东省农业科学院 Almond polypeptide with antioxidant activity and extraction method and application thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
YU-PING HUANG等: "A complete workflow for discovering small bioactive peptides in foods by LC-MS/MS: A case study on almonds", FOOD CHEMISTRY, 11 August 2021 (2021-08-11), pages 130834 *
顾欣等: "山杏仁蛋白源α-葡萄糖苷酶抑制肽的分离、纯化及鉴定", 中国粮油学报, vol. 31, no. 8, 31 August 2016 (2016-08-31), pages 116 - 121 *

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