CN106962942A - A kind of high stability potato class peptide emulsion and preparation method thereof - Google Patents

A kind of high stability potato class peptide emulsion and preparation method thereof Download PDF

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CN106962942A
CN106962942A CN201710258130.9A CN201710258130A CN106962942A CN 106962942 A CN106962942 A CN 106962942A CN 201710258130 A CN201710258130 A CN 201710258130A CN 106962942 A CN106962942 A CN 106962942A
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potato class
emulsion
potato
class peptide
preparation
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木泰华
张苗
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Institute of Food Science and Technology of CAAS
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Institute of Food Science and Technology of CAAS
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463Organic compounds; Microorganisms; Enzymes
    • A23L3/3481Organic compounds containing oxygen
    • A23L3/3508Organic compounds containing oxygen containing carboxyl groups
    • A23L3/3517Carboxylic acid esters
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463Organic compounds; Microorganisms; Enzymes
    • A23L3/3526Organic compounds containing nitrogen
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Peptides Or Proteins (AREA)
  • Cosmetics (AREA)

Abstract

The present invention provides a kind of high stability potato class peptide emulsion and preparation method thereof, and the potato class peptide emulsification liquid and preparation method thereof comprises the following steps:(1) the potato class peptide aqueous solution is mixed with vegetable oil, and fresh emulsion is obtained after homogeneous;(2) fresh emulsion is handled using the method for high-pressure homogeneous collaboration high static pressure, produces high stability potato class peptide emulsion.Potato class peptide emulsion provided by the present invention has high emulsion stability and oxidation stability, can be used to prepare functional food as raw material, it is possible to increase potato class converted products added value, and have broad application prospects in the field such as food and cosmetics.The preparation technology that the present invention is provided is simple, it is easy to industrialization production.

Description

A kind of high stability potato class peptide emulsion and preparation method thereof
Technical field
The present invention relates to food processing technology field, specifically, be related to a kind of high stability potato class peptide emulsion and its Preparation method.
Background technology
Oxidation of Fat and Oils spoilage problems have important economic implications in the emulsion-type food production containing fat.In food processing In gastronomical process, the oxidation of unsaturated lipids can not only produce bad aroma and flavor, can also pass through secondary reaction product Generation reduction food nutritional quality and security.Synthetized oxidation preventive agent, such as butylated hydroxy anisole (BHA), dibutyl hydroxyl Base toluene (BHT), tertiary butylated hydroquinone (TBHQ) and propylgallate etc. can delay the lipid peroxidation in food.However, by In its potential health hazard and toxicity, the use of synthetized oxidation preventive agent is strictly supervised.Therefore, the day of food source is utilized Oxidation of Fat and Oils research of the right antioxidant to suppress emulsion causes increasing concern.
China is potato class plantation and consumption big country, and potato class cultivated area and yield occupy first place in the world.According to statistics, 2015 Year, China's yield of sweet potato is about 70,730,000 tons, and potato yield is about 96,080,000 tons, account for the 70% of world's potato class total output with On, played an important role in ensureing national food security and promoting national economic development.With most of other vegetable protein phases Than potato protein essential amino acids content is higher, with acceptable nutritive value, is the potential source of plant source active peptide.
Therefore, develop a kind of potato class peptide emulsion with high emulsion stability and oxidation stability and set up its preparation side Method, the sustainable development for promoting China's potato class processing industry, ensureing China's grain security and improving dietary nutrition of urban residents has Significance.
The content of the invention
It is an object of the invention to provide a kind of high stability potato class peptide emulsion and preparation method thereof.
In order to realize the object of the invention, a kind of preparation method of high stability potato class peptide emulsion of the invention, including such as Lower step:
(1) the potato class peptide aqueous solution is mixed with vegetable oil, and fresh emulsion is obtained after homogeneous;The potato class peptide is using potato class as original Material, is obtained after basic protein enzymic digestion;
(2) above-mentioned fresh emulsion is handled using the method for high-pressure homogeneous collaboration high static pressure, produces high stability Potato class peptide emulsion.
Step (1) described potato class is potato, sweet potato, cassava, preferably potato and sweet potato.
In step (1), the mass concentration of potato class peptide is 0.1%-6%, preferably 1% in the potato class peptide aqueous solution.
The potato class peptide, which is prepared by the following method, to be obtained:Using potato class as raw material, solid-to-liquid ratio 2 is pressed after cleaning:1 adds It is beaten after 0.2%-0.5% aqueous citric acid solutions, the aqueous citric acid solution concentration containing Vc is 0.01%-0.1%;Cross and filter out Slag, is concentrated by ultrafiltration after removing starch;Mixed concentrate with Tris-HCl buffer solutions as substrate, make albumen in substrate whole Concentration is g:ML=1:20-100, alkali protease Alcalase, Alcalase is added into substrate and presses g with substrate:ML=1: 10-50 ratio mixing, in digesting 30-240min under 50-60 DEG C, 0.1-400MPa, freezes after desalination concentration, produces potato class Peptide.
Step (1) described vegetable oil is soybean oil, corn oil, olive oil, linseed oil, castor oil, rapeseed oil, sunflower seeds Oil.
It is 5%-50% that step (1) described vegetable oil, which accounts for the potato class peptide aqueous solution and the volume fraction of vegetable oil total system, excellent Select 25%.
In step (1), homogeneous is carried out using homogenizer, homogenizing time is 1-5min, preferably 1min.
In step (2), its high-pressure homogeneous pressure is 10-200MPa, preferably 50MPa;The high-pressure homogeneous time is 0.5-5min, It is preferred that 1min.
In step (2), the method for the high-pressure homogeneous collaboration high static pressure, its high static pressure is 100-900MPa, preferably 200MPa;Pressing time is 5-60min, preferably 15min.
Specifically, the invention provides a kind of preparation method of high stability potato class peptide emulsion, comprise the following steps:
1) the potato class peptide aqueous solution and vegetable oil that are 0.1%-6% from potato class peptide concentration are using oil phase volume fraction as 5%- 50% mixing, using after homogenizer homogeneous 1-5min fresh emulsion;
2) high static pressure (moulding pressure is cooperateed with using high-pressure homogeneous (homogenization pressure 10-200MPa, homogenizing time 0.5-5min) 100-900MPa, pressing time is 5-60min) method above-mentioned fresh emulsion is handled, produce high stability potato class Peptide emulsion.
The invention provides the high stability potato class peptide emulsion that above-mentioned preparation method is obtained.
Prepared the invention provides high stability potato class peptide emulsion obtained above with high emulsion stability and oxygen Change the application in stability food.
The present invention has advantages below:
1) the potato class peptide emulsion emulsifying activity prepared by the present invention is high, and steady with good emulsion stability and oxidation Qualitative, wherein emulsion stability improves 1 times, and peroxide number and mda content reduce 60% He respectively in emulsion 25%.
2) the potato class peptide emulsion that the present invention is provided contains eight kinds of amino acid necessary to human body, and wherein essential amino acid is accounted for Always essential amino acids ratio is all higher than 40%, it is necessary to which amino acid is above 60% with nonessential amino acid ratio, hence it is evident that be higher than The reference model that FAO/WHO recommends.
3) the potato class peptide emulsion that the present invention is provided, overcomes the defect of existing protein peptides emulsion stability difference, can be extensive It is added in the emulsion-type food containing fat, is conducive to improving dietary nutrition of urban residents and health.
4) preparation method for the potato class peptide emulsion that the present invention is provided is simple to operate, it is easy to industrialized production.
Brief description of the drawings
Fig. 1 is the microstructure of potato class peptide emulsion in the embodiment of the present invention 5,6,7 and comparative example 1.Wherein, (a) is contrasted Potato class peptide emulsion in example 1, the potato class peptide emulsion of (b) embodiment 5, the potato class peptide emulsion of (c) embodiment 6, (d) is implemented The potato class peptide emulsion of example 7.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.Unless otherwise specified, embodiment In the conventional meanses that are well known to those skilled in the art of used technological means, raw materials used is commercial goods.
The percentage sign " % " being related in the present invention, if not specified, refers to mass percent;But the percentage of solution Than unless otherwise specified, referring to the grams containing solute in 100mL solution.
The preparation method (1) of the sweet potato peptide of embodiment 1
Using sweet potato as raw material, solid-to-liquid ratio 2 is pressed after cleaning:1 adds 0.2% aqueous citric acid solution (concentration containing Vc is 0.05%) After be beaten, filter cleaner, centrifugation remove starch after be concentrated by ultrafiltration, then concentrate is mixed with Tris-HCl buffer solutions (final concentration of protein is g:ML=1:30) as substrate, alkali protease Alcalase, Alcalase are then added into substrate G is pressed with substrate:ML=1:25 ratio mixing, in digesting 60min under 57 DEG C, 300MPa, freezes after desalination concentration, produces sweet potato Peptide.
The preparation method (2) of the sweet potato peptide of embodiment 2
Using sweet potato as raw material, solid-to-liquid ratio 2 is pressed after cleaning:1 adds 0.4% aqueous citric acid solution (concentration containing Vc is 0.1%) After be beaten, filter cleaner, centrifugation remove starch after be concentrated by ultrafiltration, then concentrate is mixed with Tris-HCl buffer solutions (final concentration of protein is g:ML=1:40) as substrate, alkali protease Alcalase, Alcalase are then added into substrate G is pressed with substrate:ML=1:20 ratio mixing, in digesting 30min under 50 DEG C, 200MPa, freezes after desalination concentration, produces sweet potato Peptide.
The preparation method (3) of the sweet potato peptide of embodiment 3
Using sweet potato as raw material, solid-to-liquid ratio 2 is pressed after cleaning:1 adds 0.5% aqueous citric acid solution (concentration containing Vc is 0.02%) After be beaten, filter cleaner, centrifugation remove starch after be concentrated by ultrafiltration, then concentrate is mixed with Tris-HCl buffer solutions (final concentration of protein is g:ML=1:40) as substrate, alkali protease Alcalase, Alcalase are then added into substrate G is pressed with substrate:ML=1:20 ratio mixing, in digesting 30min under 55 DEG C, 100MPa, freezes after desalination concentration, produces sweet potato Peptide.
Embodiment 4
Using sweet potato as raw material, solid-to-liquid ratio 2 is pressed after cleaning:1 adds 0.3% aqueous citric acid solution (concentration containing Vc is 0.01%) After be beaten, filter cleaner, centrifugation remove starch after be concentrated by ultrafiltration, then concentrate is mixed with Tris-HCl buffer solutions (final concentration of protein is g:ML=1:20) as substrate, alkali protease Alcalase, Alcalase are then added into substrate G is pressed with substrate:ML=1:10 ratio mixing, in digesting 30min under 50 DEG C, 0.1MPa, freezes after desalination concentration, produces sweet potato Peptide.
The preparation method (1) of the high stability potato class peptide emulsion of embodiment 5
1) sweet potato peptide (made from the embodiment 1) aqueous solution that peptide concentration is 1% and vegetable oil using oil phase volume fraction as 25% mixing, using after homogenizer homogeneous 1min fresh emulsion;
2) using high-pressure homogeneous (homogenization pressure 50MPa, homogenizing time 1min) collaboration high static pressure (moulding pressure 200MPa, Pressing time is 15min) method above-mentioned fresh emulsion is handled, produce high stability sweet potato peptide emulsion.
The preparation method (2) of the high stability potato class peptide emulsion of embodiment 6
1) sweet potato peptide (made from the embodiment 1) aqueous solution that peptide concentration is 1% and vegetable oil using oil phase volume fraction as 30% mixing, using after homogenizer homogeneous 1.5min fresh emulsion;
2) using high-pressure homogeneous (homogenization pressure 100MPa, homogenizing time 2min) collaboration high static pressure (moulding pressure 400MPa, Pressing time is 30min) method above-mentioned fresh emulsion is handled, produce high stability sweet potato peptide emulsion.
The preparation method (3) of the high stability potato class peptide emulsion of embodiment 7
1) potato class peptide (made from the embodiment 1) aqueous solution that peptide concentration is 1% and vegetable oil using oil phase volume fraction as 20% mixing, using after homogenizer homogeneous 2min fresh emulsion;
2) using high-pressure homogeneous (homogenization pressure 200MPa, homogenizing time 3min) collaboration high static pressure (moulding pressure 600MPa, Pressing time is 40min) method above-mentioned fresh emulsion is handled, produce high stability potato class peptide emulsion.
Comparative example 1
This example provides a kind of preparation method of high stability potato class peptide emulsion, and the difference with embodiment 5-7 is:
1) potato class peptide (embodiment 1) aqueous solution that peptide concentration is 1% is mixed with vegetable oil using oil phase volume fraction as 25%, Using after homogenizer homogeneous 1min fresh emulsion;
2) step 2 is omitted).
Experimental example 1
To hydroxyl radical free radical scavenging capacity, the Fe of potato class peptide in embodiment 1,2,3 and 42+Chelating ability, TAC, Amino acid composition etc. is analyzed:
(1) hydroxyl radical free radical scavenging capacity
Using α-deoxyribose oxidizing process.Potato class peptide is dissolved in distilled water, the solution that concentration is 1mg/mL is made into.Will 0.1mL 10mM FeSO4·7H2O, 0.9mL 0.1M phosphate buffer (pH 7.4), 0.5mL 10mM α-deoxyribose, 0.1mL 10mM EDTA and 0.2mL sample solutions are fully mixed in test tube.Add 0.2mL 10mM H2O2Start reaction afterwards, It is placed in 37 DEG C of baths and reacts 1h.Reaction terminates, and adds the 2.8%TCA terminating reactions of 1.0mL ice temperature, is subsequently added 1mL 1% TBA (50mM NaOH) is mixed, and boiling water bath 20min colour developings, cooling surveys light absorption value after 532nm.OH clearance rates (%) are calculated such as Under:
Hydroxyl radical free radical clearance rate (%)=【(A0- A1)/A0】×100
Wherein:A0For the light absorption value of blank control;A1For the light absorption value after example reaction.It the results are shown in Table 1.
(2)Fe2+Chelating ability
Potato class peptide is dissolved in distilled water, the solution that concentration is 1mg/mL is made into.Reactant mixture includes 45 μ L 2mM FeCl2, 450 μ L samples and 1815 μ L distilled water.Acutely concussion mixture, then places 30min at room temperature.After 30min, plus Enter the sodium salt (ferrozine) of 90 μ L 5mM 4,4'- [3- (2- pyridine radicals) -1,2,4- triazine -5,6- diyls] DAADBSA one to mix It is even.Fe is determined under 562nm2+The light absorption value of-ferrozine compounds.Make blank with distilled water.Fe2+Sequestering power (%) is counted Calculate as follows:
Fe2+Chelating ability (%)=【(A0- A1)/A0】×100
Wherein:A0For the light absorption value of blank control;A1For the light absorption value after example reaction.It the results are shown in Table 1.
(3) TAC
Scavenging capacity of the potato class peptide to peroxy radical is determined using oxygen radical absorbability method (ORAC).All solution 75mmol/L is used, pH=7.4 phosphate buffer solutions are configured and diluted.20 μ L testing samples are added in 96 microwell plates (concentration is 1mg/mL), 20 μ L phosphate buffer solutions, 20 μ L 63nmol/L Fluress, 37 DEG C of insulation 10min Afterwards, 140 μ L18.28mmol/L AAPH solution is added immediately, is placed in multi-function microplate reader, in excitation wavelength 485nm and hair Fluorescent value is determined under the long 535nm of ejected wave, time interval is set to 2.0min, it is 60 times to determine number of times, it is 37 DEG C to determine temperature.Simultaneously Determine fluorescent value (with the phosphate buffer solution of equivalent replace AAPH solution) of each reaction solution when being acted on without AAPH with Watermiscible vitamin E is expressed as μ g watermiscible vitamin E equivalents as standard items, the oxygen radical absorbability of sample solution (trolox equivalent, TE)/mL sample solutions.It the results are shown in Table 1.
(4) amino acid composition analysis
The amino acid composition of sweet potato peptide is determined using automatic amino acid analyzer, is specially:75mg sweet potato peptides are weighed, are used 10mL 6M HCl at 110 DEG C in digesting 24h.After hydrolysis is finished, mixed liquor is poured into 50mL volumetric flasks, ultra-pure water constant volume is used, 1mL hydrolysis liquid nitrogen is taken to be blown to dry.Drying sample is dissolved in the sodium citrate buffer solution that pH value is 2.2, regulation amino acid is dense Spend for 50-250nmol/mL, then loading to Hitachi's L-8800 amino-acid analyzers carry out determined amino acid.It the results are shown in Table 1.
The antioxidation activity and amino acid composition analysis of the sweet potato peptide of table 1
As it can be seen from table 1 the sweet potato peptide prepared in embodiment 1,2,3,4 is respectively provided with certain antioxidation activity.With this Meanwhile, sweet potato peptide essential amino acids content is enriched, and wherein essential amino acid accounts for always essential amino acids ratio and is all higher than 40%, it is necessary to Amino acid is above 60% with nonessential amino acid ratio, hence it is evident that the reference model recommended higher than FAO/WHO.
Experimental example 2
To emulsifying activity index, stable emulsifying index, the particle diameter of potato class peptide emulsion in embodiment 5,6,7 and comparative example 1 Distribution, the generation of Oxidation of Fat and Oils product etc. are analyzed:
(1) emulsifying activity index
It is measured using nephelometry, from the bottom of test tube 20 μ L will be taken to add to 5mL at once after emulsion homogeneous In 0.1% (w/v) SDS solution, vibration determines the light absorption value of different solutions respectively at 500nm after mixing.
Wherein, A is light absorption value at 500nm, and C is the concentration (%, w/v) of sweet potato peptide solution,For oil phase volume fraction, l is Light path (0.01m).It the results are shown in Table 2.
(2) stable emulsifying sex index
After emulsion homogeneous, 10min is stood at room temperature, takes 20 μ L emulsions to add to 5mL from the bottom of test tube 0.1% SDS solution, vibration determines the light absorption value of solution at 500nm after mixing.
ESI (min)=(A0×t)/(A0-A10)
Wherein, A0And A10Represent that emulsion stands the light absorption value after 0 and 10min respectively, t is 10min.It the results are shown in Table 2.
(3) particle diameter distribution
The fresh emulsions of 0.3mL are taken to be added in 5mL 1.0% (w/v) SDS solution, vibration is mixed, then with laser grain Spend the volume average particle size (d of analysis-e/or determining emulsion4,3).It the results are shown in Table 2.
(4) Oxidation of Fat and Oils product is generated
1. peroxide number (PV)
It is measured using titration.1mL is stood into potato class peptide emulsion and 20mL acetic acid after 12h and chloroform (both Ratio is 3:2) solution is mixed, and adds 2mL saturation KI solution, and fully vibration stands 3min after dark place, then adds 60mL and steams Distilled water is mixed, and adds 1mL starch solutions (0.5%, w/v), blue disappearance is titrated to 2mM sodium thiosulfate.
PV (mg equivalents/kg oil)=[V1-V0]×C/m
Wherein V1And V0It is the volume (mL) of potato class peptide emulsion and the sodium thiosulfate of blank consumption respectively;C is thio sulphur The concentration of sour sodium;M is the quality (g) of sample.
2. mda content (TBARS)
2mL thiobarbituricacidα-s solution, 0.5mL is taken to stand potato class peptide emulsion and 0.5mL distilled water after 12h mixed It is even, 15min is heated in boiling water bath, room temperature is cooled to and 25min is centrifuged under the conditions of 5000rpm, supernatant is taken under 532nm Determine light absorption value.It the results are shown in Table 2.
The property of the potato class peptide emulsion of table 2
From table 2 it can be seen that compared with comparative example 1, potato class peptide emulsion emulsifying activity prepared by embodiment 5,6 and 7 refers to Number, stable emulsifying sex index are higher, and volume average particle size, peroxide number, mda content are relatively low, illustrate embodiment 5,6 Comparative example 1 is all remarkably higher than with the emulsion stability and oxidation stability of the 7 potato class peptide emulsions prepared.Wherein, the potato of embodiment 4 The stable emulsifying sex index highest of class peptide emulsion, and volume average particle size, peroxide number, mda content are minimum, explanation Its emulsion stability and oxidation stability are more preferable.Fig. 1 is the microcosmic knot of potato class peptide emulsion in embodiment 5,6 and 7 and comparative example 1 Structure, as shown in Figure 1, in comparative example 1, the difference in size of emulsion emulsified particles significantly, shows heterogeneity state, and have aggregation Phenomenon occurs;And in embodiment 5,6 and 7, the emulsified particles of emulsion is tiny, homogeneous, and occur without clustering phenomena.It can be seen that using Potato class peptide emulsion made from the inventive method has higher emulsion stability and oxidation stability.
Although above the present invention is described in detail with a general description of the specific embodiments, On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.

Claims (10)

1. a kind of preparation method of high stability potato class peptide emulsion, it is characterised in that comprise the following steps:
(1) the potato class peptide aqueous solution is mixed with vegetable oil, and fresh emulsion is obtained after homogeneous;The potato class peptide be using potato class as raw material, Obtained after basic protein enzymic digestion;
(2) above-mentioned fresh emulsion is handled using the method for high-pressure homogeneous collaboration high static pressure, produces high stability potato class Peptide emulsion.
2. preparation method according to claim 1, it is characterised in that step (1) described potato class is potato, sweet potato, wood Potato, preferably potato and sweet potato.
3. preparation method according to claim 1, it is characterised in that in step (1), potato class in the potato class peptide aqueous solution The mass concentration of peptide is 0.1%-6%, preferably 1%.
4. preparation method according to claim 1, it is characterised in that the potato class peptide is to be prepared by the following method to obtain 's:
Using potato class as raw material, solid-to-liquid ratio 2 is pressed after cleaning:1 adds mashing, the lemon after 0.2%-0.5% aqueous citric acid solutions Aqueous acid concentration containing Vc is 0.01%-0.1%;Filter cleaner, is concentrated by ultrafiltration after removing starch;By concentrate with Tris-HCl buffer solutions are mixed as substrate, and it is g to make final concentration of protein in substrate:ML=1:20-100, alkali is added into substrate Property protease A lcalase, Alcalase and substrate press g:ML=1:10-50 ratio mixing, in 50-60 DEG C, 0.1-400MPa Lower enzymolysis 30-240min, freezes after desalination concentration, produces potato class peptide.
5. preparation method according to claim 1, it is characterised in that step (1) described vegetable oil is soybean oil, corn Oil, olive oil, linseed oil, castor oil, rapeseed oil, sunflower oil.
6. preparation method according to claim 1, it is characterised in that step (1) described vegetable oil accounts for the potato class peptide aqueous solution Volume fraction with vegetable oil total system is 5%-50%, preferably 25%.
7. preparation method according to claim 1, it is characterised in that in step (2), its high-pressure homogeneous pressure is 10- 200MPa, preferably 50MPa;The high-pressure homogeneous time is 0.5-5min, preferably 1min.
8. preparation method according to claim 1, it is characterised in that in step (2), the high-pressure homogeneous collaboration high static pressure Method, its high static pressure be 100-900MPa, preferably 200MPa;Pressing time is 5-60min, preferably 15min.
9. the high stability potato class peptide emulsion that any described preparation methods of claim 1-8 are obtained.
10. the high stability potato class peptide emulsion described in claim 9 is being prepared with high emulsion stability and oxidation stability Application in food.
CN201710258130.9A 2017-04-19 2017-04-19 A kind of high stability potato class peptide emulsion and preparation method thereof Pending CN106962942A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019070186A1 (en) * 2017-10-04 2019-04-11 Veg Of Lund Ab Potato emulsion
CN111194169A (en) * 2017-10-04 2020-05-22 隆德植物有限公司 Potato emulsions
EP3687298A4 (en) * 2018-11-26 2021-08-11 Veg Of Lund AB Vegan potato emulsion
CN111481503A (en) * 2020-04-09 2020-08-04 暨南大学 Vitamin D3-loaded nano calcium carbonate pickering emulsion and preparation method and application thereof
CN111481503B (en) * 2020-04-09 2022-03-04 暨南大学 Vitamin D3-loaded nano calcium carbonate pickering emulsion and preparation method and application thereof
CN112450445A (en) * 2020-11-10 2021-03-09 中国农业科学院农产品加工研究所 Potato peptide emulsion and preparation method and application thereof

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