CN102382471A - Prescription of biodegradable soybean protein thermoplastic material - Google Patents
Prescription of biodegradable soybean protein thermoplastic material Download PDFInfo
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- CN102382471A CN102382471A CN2010102683832A CN201010268383A CN102382471A CN 102382471 A CN102382471 A CN 102382471A CN 2010102683832 A CN2010102683832 A CN 2010102683832A CN 201010268383 A CN201010268383 A CN 201010268383A CN 102382471 A CN102382471 A CN 102382471A
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Abstract
The invention provides a prescription of a biodegradable soybean protein thermoplastic material, which comprises the following components in percentage by weight: 25-65 percent of protein, 30-40 percent of starch filler, 5-35 percent of plasticizer, 0.5-2.5 percent of reducing agent and 5-25 percent of water. The components have high flowability needed by machining, form a curing object with high tensile strength and high water resistance by extrusion or injection moulding and can be biodegraded.
Description
Affiliated technical field
The present invention relates to a kind of prescription of soybean prod deep processing, especially a kind of is the prescription of the thermoplastic material of main material with biodegradable Sunlover 10.
Background technology
Attempted preparing the biodegradable object of compression molding from various type protein material.One of example of such protein material is a Sunlover 10, especially with the form of soybean protein isolate and soybean protein concentrate.Though Sunlover 10 has shown good moldable property, such material does not also possess the traditional device mobile degree of processing easily of using.As a result, plastic of soybean protein is usually with the pressurization compression molding.
Other effort that improve Sunlover 10 processing comprise, handle albumen with reductive agent, to improve proteic dispersiveness in the mixture.The function of these reductive agents be to reduce bonded cystine linkage in (cracking) albumen or the peptide molecule (--S--S--), the formation sulfydryl (--SH), thereby increase proteic dispersiveness.So mix and comprise high-caliber softening agent, with viscosity and convenient processing and the extruding that reduces material.
Though it is useful making film with extruding, these mixing do not have through the thermoplasticity processing technology, like the structure or the intensity of the solid articles of extruding and injection moulding formation.
Summary of the invention
The prescription that the present invention seeks to avoid the prior art deficiency and a kind of biodegradable Sunlover 10 thermoplastic material is provided.
The technical scheme that the present invention adopted is:
A kind of prescription of biodegradable Sunlover 10 thermoplastic material, its weight percent are albumen: 25-65%; Starch filled material: 30-40%; Softening agent: 5-35%; Reductive agent: 0.5-2.5%; Water: 5-25%.
Described albumen is soybean protein concentrate, soybean protein isolate, soybean protein powder, wheat protein, zein, hordein, kafirin, avenin or their any combination.
Described albumen also comprises collagen protein, casein food grade, albumen, gelatin, Keratin sulfate or their any combination.
Described starch filled material is from the isolated native starch of natural origin, chemically modified starch, pre-gelatinized starch or their arbitrary combination.
Described native starch is W-Gum, yam starch, wheat starch, Starch rice, waxy corn starch, wax Starch rice, amylomaize starch, Tapioca Starch starch, oat starch, naked barley starch, barley starch, sorghum starch, green starch, sweet potato starch or their any combination; Chemically modified starch is the group of amylcose acetate, starch maleates, octenyl succinic acid starch, CMS, hydroxyethylamyle, hydroxypropylated starch, methyl starch, ethyl starch, dimethyl hydroxyethyl starch, ethyl hydroxypropylated starch, phosphorylated starch, acrylic amide starch, Sumstar 190, cationic starch, succinic acid starch or their any combination.
Described softening agent is glycerine, triethylene glycol, urea, sorbyl alcohol, gathers sorbose, N.F,USP MANNITOL, maltose alcohol, terepthaloyl moietie, Ucar 35, Z 150PH, sodium cellulosate, polyoxyethylene glycol, W 166, polyethylene propylene alcohol, Epicholorohydrin or their any combination.
Described reductive agent is S-WAT, Sodium Metabisulphate 65, potassium acid sulfite, Sodium Nitrite, sodium hydrosulfite 90min, Sodium Pyrosulfite, sulfoxylic acid potassium, sour sulfite, xitix or their any combination.
This present invention's technical scheme also comprises:
Prescription comprises cellulosic fibre 1-25% (weight percent), can also comprise lubricant 0.1-2% (weight percent), and it is an amount of to comprise tinting material.
Described cellulosic fibre is ether of cellulose, methylcellulose gum, Natvosol, Walocel MT 20.000PV, hydroxypropylcellulose, sodium cellulose glycolate or their any combination.
Described lubricant is VT 18, Yelkin TTS, direactive glyceride, double glyceride, lipid acid, vegetables oil, many hydroxy compounds SULPHOSUCCINIC ACID ESTER, animal tallow, oil silicone, MO or their any combination.
Technical scheme of the present invention also comprises:
Described thermoplastic material is through injection moulding mold pressing or extrusion molding.
In the present invention:
The Sunlover 10 that the thermoplasticity composition was handled by the reductive agent of a large amount is united starch filled material, softening agent, water and is formed together according to the additive of needs adding.
The thermoplasticity composition is at high temperature, the preparation in high speed, high-shear mixer, suitable is extrusion machine, and through injection moulding or its high-temperature molding process, extrudate can be used for preparing object, and the object of gained has high tensile and low suction.
Place like this usefulness, only if with other note, the composition of composition is based on the gross weight of composition.
Dietary protein origin: composition is prepared with Sunlover 10, independent or with other adaptive plants or the associating of animal proteinum material; Composition comprises the 25-65% Sunlover 10 of weight meter approximately, about 30-60% of suitable weight meter, more suitably about 35-55% of weight meter.
Sunlover 10 can be to comprise about 90% soybean protein isolate form at least, comprises 70% proteic soybean protein concentrate at least, or comprises 50% proteic soyflour at least.
Can prepare soybean protein concentrate, for example, alkali is extracted the thick bean powder of degreasing out, uses Acid precipitation, is the skill of known technology and use.Sunlover 10 also can buy, and like PromineR (CentralSoya), is that a kind of protein content is about 95% a soybean protein isolate of weight meter.Other soy protein products also can be from ADM, Decatur, and I11. and ProteinTechnology, St.Louis, Mo obtains.
Sunlover 10 can be separately or with plant, animal with or microbe-derived protein combination.The albumen of suitable plant origin comprises paddy wheat protein, zein, hordein, kafirin, avenin etc.Gluten albumen possibly come from wheat, corn, oat, rice etc., and suitable is wheat gluten.The albumen that is suitable for the animal-origin of these compositions of the present invention of usefulness comprises, for example, originates from the casein food grade of milk, the white protein that derives from blood or egg, collagen protein, gelatin, Keratin sulfate and other the similar proteic substance that contains.Mikrobe like cereuisiae fermentum and bread yeast, also can be united with Sunlover 10 in this composition.
Reductive agent: it is in order to improve the dispersiveness of albumen in mixing that composition is prepared with reductive agent; Also be for soybean processing protein ingredient in mixing tank (just; And make protein ingredient molded or other similar process stempressing becomes the object of solid compression molding through injection mould extrusion machine).Prove that before the present invention, the curing through the extruding and the Sunlover 10 of the molded formation type of injection mould solid articles is difficult.But find surprisingly; Sunlover 10 of the present invention and reductive agent, starch filled material and plasticizer combinations; Reach thermoplasticity and mix, and can push to solidify and produce the little ball of solid, so can be through injection mould molded or other compression molding technologies be formed with the object of usefulness.
Reductive agent possibly be to contain--the sulfydryl reductive agent of SH group, or other have the ability to start reduction (riving) protein moleculars or polypeptide cystine linkage, and (--S--S--) and form--compound of reaction of SH group increases proteic dispersiveness like this.The sulfydryl reductive agent through break apart various cystine linkage in the polypeptied chain (interchain, intrachain) and/or crosslinked different polypeptides chain (intrachain interchain), increases proteic solubility or dispersiveness.
Useful reductive agent comprises, like mercaptan, mercaptoethanol, Gelucystine, L-hydrochloric acid Gelucystine, half ammonia amine, L-Gelucystine tartrate, and two-L-Gelucystine sulphite etc.; Xitix (Quicifal); Ammonium sulphite; Alkali metal sulfite, hydrosulphite and nitrite are like S-WAT or potassium sulfite, sodium sulfite anhy 96 or Potassium hydrogen sulfite, Sodium Nitrite, sulfoxylate and pyrosulfite etc.; Sulfhydrate; Gsh etc.Appropriate reductant is S-WAT, xitix and sodium sulfite anhy 96.S-WAT and sodium sulfite anhy 96 also play the effect of brilliant white product colour.Suitable is that composition comprises about 0.5-2.5% reductive agent of weight meter, more suitably is about 1-2% of weight meter.
Starch filled material: comprise starch filled material in the component prescription, so that good mobility, anti-waterpower (reduce water absorb) and reduction product cost preferably to be provided.Suitable is, Sunlover 10 (% of weight meter) is united with the starch filled material of about 30-40% of weight meter, more suitably is about 25-35% of weight meter, and only is about 20-30% of weight meter.
Starch filled material can be that natural (not modifying) separation is originated from native starch, comprises corn, like cured matter corn and amylomaize; Wheat comprises hard wheat, soft wheat and flint wheat (durumwheat); Rice comprises the wax rice; Naked barley, oat, barley, Chinese sorghum, millet, triticale, purple amaranth (amaranth), yam, cassava, mung bean, sweet potato etc.Starch possibly be normality starch (about 20-30% amylose starch of weight meter), waxy starch (about 0-8% amylose starch of weight meter) or high amylose starch starch.(about 50% above amylose starch of weight meter).
Stopping composition also possibly be chemistry-modification, deutero-starch; Like starch acetate, propionic acid amide starch, PHENRAMINE MALEATE (or ester) starch; Octenyl succinic acid starch, propyloic starch, hydroxyethylamyle, hydroxypropylated starch, methyl starch, ethyl starch, dimethyl hydroxyethyl starch, ethyl hydroxypropylated starch, starch phosphates, Sumstar 190, cationic starch, SUMATRIPTAN SUCCINATE (or ester) starch etc.
Also use pre-gelatinized starch, cool water soluble starch, or other physical modification starch are made stopping composition.
Softening agent: composition further comprises the softening agent of significant quantity, with before mixing, mix after neutralization mixes, give material softness property and flexible, elastic force and workability be provided to the object of compression molding.It is fixed that composition is prepared with about 5-35% softening agent of weight meter, and that suitable is about 10-30% of weight meter, more suitably is about 15-25% of weight meter.
The suitable softening agent that this composition is useful; The alcohol, glycerine, single glyceryl acetate, Glycerol dimer acetic ester, triglycerin acetic ester, triethylene glycol, urea, sorbyl alcohol Glycerol dimer acetic ester, sorbitanic, N.F,USP MANNITOL, maltitol, terepthaloyl moietie, Ucar 35, Z 150PH, sodium cellulosate, glycolic acid esters, methyl ether of cellulose, sodium-alginate, two ethyl sodium succinate, triethyl Citrate trianion, polyoxyethylene glycol, W 166, the polyethylene propylene terepthaloyl moietie that for example comprise polyvalent alcohol and higher molecular weight; 1; 2,6-hexanetriol, trolamine and their mixing.
Water: composition further comprises the water of the 5-25% of weight meter, and with the moisture and the convenient processing that increase composition, that suitable is about 8-20% of weight meter, more suitably is about 10-15% of weight meter.
Additive: Sunlover 10 based thermoplastic composition can be according to need further comprising additive.Useful additive comprises, like lubricant, filling agent, seasoning and seasoning agent, tinting material, sanitas etc.
Lubricant: composition can comprise the lubricant of a small amount of significant quantity, when the composition compression molding becomes required object, mould or pigment lubrication effect is provided, and for example, discharges from mould through the object that helps compression molding.
The insoluble lubricant of water also can increase the anti-water of product.
The example that possibly also be used for the proper lubrication agent of composition, single with or with the combination of other lubricants, comprise VT 18, phosphatide, like Yelkin TTS, mono and di-glycerides, lipid acid, suitable is sfas; Vegetables oil, suitable is hydrogenated form, poly hydroxyl compound phosphate derivative, animal tallow, suitable is to make hydrogenated form, to avoid thermooxidizing, oil silicone and mineral wet goods.Examples of suitable lubricants is VT 18 and Yelkin TTS.The amounts of lubrication that in composition, comprises is about 0.1-2% of weight meter, and suitable is about 0.5 to 1.5% of weight meter.
Filling agent: composition also can comprise filling agent, so that the enhancing of structure to be provided, improves the characteristic of machinery, like tensile strength, turnout intensity, the anti-water of increase and reduction product cost.Wherein, composition possibly comprise the 1-25% filling agent of weight meter approximately, and that suitable is about 5-20% of weight meter, more suitably is about 10-15% of weight meter.
Filling agent possibly be the cellulose prods material, comprises derivatived cellulose, like methylcellulose gum, CMC 99.5, Walocel MT 20.000PV and hydroxypropylcellulose and Xylo-Mucine; Microcrystalline Cellulose; And/or cellulosic fibre.Filling agent possibly be the synthetic polymer; As gather (vinylformic acid), gather (methylacrylic acid), gather (vinyl acetate), gather (vinyl alcohol) and gather (vinylacetate phthalic ester); Especially suitable, filling agent is derivatived cellulose or the cellulosic fibre that has staple fibre.
Filler: the natural gum that can add one or more is as auxiliary curing agent, with improvement tensile strength, flintiness, surface luster and thermally-stabilised.Useful gummy example comprises like locust bean gum, XG 550, melon bean gum, carrageenin, especially.Though be not too suitable, also available sodium-alginate, gelatin, agar and pectin.Composition can comprise one or more the stable glue of about 1-5% of weight meter as softening agent, as suitable be the 2-4% of about weight meter.
PH revises agent: composition can further comprise Hydrocerol A, propionic acid, lactic acid, the acetic acid acid similar with other, to improve the wet tenacity of compression molding object.Into the acid amount of comprising will be adjusted about pH4.5 of the iso-electric point (PI) that is mixed into about Sunlover 10 effectively.At its PI, Sunlover 10 has minimum electric charge and is the most water resisting.
Sanitas: also can comprise adaptive biocide in the composition, like mycocide or bactericide, its amount reaches the growth that effectively prevents fungi and bacterium etc. in by the object of composition moulding or on the object.
Useful sanitas example comprises propionic acid, Sorbic Acid, sodium Diacetate, parabens, sodium-acetate, mono phosphoric acid ester calcium, lactic acid etc., and their mixing.About 0.05-0.3% sanitas that can comprise the weight meter in the composition.
Tinting material: if needed, composition can further comprise tinting material.The suitable tinting material that uses in the present invention comprises like azoic dyestuff, like brown 2R of Bismarck and direct green B; Natural colorant is like chlorophyll, xenthophylls, Serlabo and indigo; MOX is like iron or titanium oxide.The concentration of the tinting material that can comprise in the composition is the about 0.001 to 10% of weight meter, and suitable is about 0.5 to 3% of weight meter.
Compared with prior art, the invention provides the thermoplastic material of processing with Sunlover 10, possess and be processed into the required high fluidity of solid articles of mold pressing to material through extruding, injection moulding and other; Provide and to form solid, biodegradable Sunlover 10 thermoplasticity composition with increase tensile strength and level of stretch object; The Gao Kangshui that forms with the Sunlover 10 composition is provided, can tolerate and place the water long period and minimum or do not have the object of disintegration, the biodegradable plastic object of cheapness is provided.
Embodiment
Realize these and other object through the present invention, object is directly to unite reductive agent, starch filling agent, softening agent, water and according to Sunlover 10 to add the biodegradable thermoplasticity composition that selectable additive is processed.Composition can be used for making the biodegradable object of solid, moulding, and has HS tensile strength and water resisting property, for example, mixes and injection moulding through extruding.
Advantageously find; Be used to make the injection moulding object the thermoplasticity composition can from Sunlover 10 separately or with other albumen; Like gluten associating, through albumen and reductive agent, and albumen reacts with cellulosic fibre charges, softening agent, water with starch and prepares.The injection moulding product made from this composition shows high elongation intensity, about 20Mpa, extension at break percentage ratio about 18%.In other objects, composition is useful in producing biodegradable container, food and drink food processing apparatus, golf ball T stage and other outdoor activity object.
Thermoplastic composition is to unite separately or with gluten or other albumen with about 25-65% Sunlover 10 of weight meter; About 0.5-2.5% reductive agent of weight meter is like S-WAT or sodium sulfite anhy 96; About 30-40% starch charges of weight meter; About 5-35% glycerine of weight meter or other similar softening agent; About 5-25% water of weight meter.If desired, can comprise additive in the composition, for example VT 18, Yelkin TTS or other proper lubrication agent, Mierocrystalline cellulose filling agent, like locust bean gum or carrageenin, sanitas.
Composition be through at a high speed, high-shear mixer, melt under the albumen mixing condition improving temperature, suitable for to extrude processing and preparing.What process is the exsiccant extrudate, for example, through injection moulding, it is solidified, and the object of moulding is biodegradable and has high tensile and water resisting property that suitable is through injection moulding technology.
Embodiment 1:
Specifically: 100 portions of Sunlover 10s are main with soybean protein concentrate or soybean protein isolate; 2 parts of reductive agents are main with S-WAT, xitix and sodium sulfite anhy 96; 60 parts of starch; 50 parts of softening agent are main with glycerine; 20 parts of water; 2.5 part lubricant is main with VT 18; 14 parts of stopping composition are main with carrageenin and locust bean gum; 75 parts of Mierocrystalline celluloses serve as main be mixed with thermoplastic material and process with the staple fibre Mierocrystalline cellulose.
The mixing system that adopts is the continuous flow mixing tank; Like continuous processing machine of Teledyne or BreadsleyPiper continuous mixing device, suitable is the twin-screw extruder device, and component is admixed together under high-shear; Form the quality of homogeneous in fact, and component is disperseed equably.
Component can get into first section in the twin-screw extruder through making component, makes component be mixed into the quality of plasticity-homogeneous, and extruding mixture is cut extrudate into pieces through unloading outlet or punching block then.
The composition of plastics gets in air or other gaseous medias via unloading outlet or punching block.Extrudate is cut into the bead of the size that needs then, drying,
Use after storing or use at injection molding process, to form biodegradable Sunlover 10 thermoplastic product.The mixture that squeezes out solidified in several minutes, depend on, for example the component of the size of extrudate, composition,
The temperature of composition and other similar factors.
Protein material can be processed into solid articles, and for example, through injection molding process, wherein a certain amount of melted form plastic components is pressed into mould and safeguards that pressure is up to cooling.Molded through compression molding, wherein use water pressure engine directly to add upward pressure composition in a certain amount of chamber; Through blow molding, wherein be expressed to the pipe of thermoplasticity composition in the mould, in pipe, feed pressurized air, it is limited in the mould, and forms the object of hollow; Through additive method, as move compression molding, vacuum compression molding, pressure compression molding, compression molding or other suitable compression molding technologies swell.
Protein material is the spherical formula of solid roundlet of dissolving (120 ℃ to 150 ℃) with heating, the water-content of the 8-15% that has an appointment, and injection is under about 880-1700 kg/cm pressure, about 120 ℃ to 160 ℃ of temperature gets in the mould (about 25 ℃ to 40 ℃ of temperature).In plastic cool and after solidifying, open the compression molding unit, obtain object with mold cavities shape.
The plastics of gained and the Sunlover 10 that utilizes other mix make obverse compare, also have tensile strength level, per-cent elongation and the anti-water degree of increase.Product has level and smooth quality.Advantageously, the thermoplastic material composition of invention and the object produced of composition from then on have the tensile strength of about 5-20MPa, and that suitable is about 10-20MPa, and that more suitable is about 15-20MPa.
Except that biodegradable, composition can comprise component completely, and can under nontoxic level, be consumed by the Mammals that comprises the people or other animals, so can be consumed by animal safely from the object of such composition compression molding.Edible composition is like this being made; For example maybe be with pack content, plate and flatware along with having a dinner to people or the packaged of other animal digestions are useful, as eat food for a short time, pet and other animal foodstuffs or other hope to consume the object of objects.
According to the present invention, food ingredient can comprise edible seasoning and adjusting incense agent, like cocoa powder, vanilla, fruit extract, like strawberry and banana etc., with the flavour that improves edible composition and the tinting material adaptive with essence.Also the nutritional fortification of composition be can make, as VITAMINs or mineral substance comprised.After using, can collect tableware, plate and container, through pasteurize and polishing, manufacture product, like animal-feed, soil redeposition etc.
Soybean protein isolate has inflexible, frangible physical properties and little flowability.Assessed the influence of softening agent, made Sunlover 10, had or do not had the prescription of the glycerine of glycerine and different levels the mechanical characteristics improvement of the compressed moulding object of Sunlover 10 manufacturing.
The prescription of sample 1 with do not have glycerine, as contrast, and have the glycerine of different amounts to make softening agent in the sample 2-4 prescription, water is as second softening agent, like what show in the following table 1.
Table 1
Embodiment 2 provided by the invention: (all being weight percentage) soybean protein isolate 30%; S-WAT 2%; The W-Gum stopping composition, the mixture 30% of starch maleates, octenyl succinic acid starch, succinic acid starch, yam starch, glycerine 15%, water 10%; VT 18 0.5%; Carrageenin 2%; Staple fibre 10%; Sanitas 0.25%; Tinting material 0.25%.
Claims (9)
1. the prescription of a biodegradable Sunlover 10 thermoplastic material, it is characterized in that: its weight percent is albumen: 25-65%; Starch filled material: 30-40%; Softening agent: 5-35%; Reductive agent: 0.5-2.5%; Water: 5-25%.
2. the prescription of a kind of biodegradable Sunlover 10 thermoplastic material according to claim 1; It is characterized in that: described albumen is soybean protein concentrate, soybean protein isolate; Soybean protein powder, wheat protein, zein, hordein, kafirin, avenin or their any combination.
3. the prescription of a kind of biodegradable Sunlover 10 thermoplastic material according to claim 1 is characterized in that: described albumen also comprises collagen protein, casein food grade, albumen, gelatin, Keratin sulfate or their any combination.
4. the prescription of a kind of biodegradable Sunlover 10 thermoplastic material according to claim 1 is characterized in that: described starch filled material is from the isolated native starch of natural origin, chemically modified starch, pre-gelatinized starch or their arbitrary combination.
5. according to the prescription of claim 1 or 4 described a kind of biodegradable Sunlover 10 thermoplastic materials, it is characterized in that: described native starch is W-Gum, yam starch, wheat starch, Starch rice, waxy corn starch, wax Starch rice, amylomaize starch, Tapioca Starch starch, oat starch, naked barley starch, barley starch, sorghum starch, green starch, sweet potato starch or their any combination; Chemically modified starch is the group of amylcose acetate, starch maleates, octenyl succinic acid starch, CMS, hydroxyethylamyle, hydroxypropylated starch, methyl starch, ethyl starch, dimethyl hydroxyethyl starch, ethyl hydroxypropylated starch, phosphorylated starch, acrylic amide starch, Sumstar 190, cationic starch, succinic acid starch or their any combination.
6. the prescription of a kind of biodegradable Sunlover 10 thermoplastic material according to claim 1; It is characterized in that: described softening agent is glycerine, triethylene glycol, urea, sorbyl alcohol, gathers sorbose, N.F,USP MANNITOL, maltose alcohol, terepthaloyl moietie, Ucar 35, Z 150PH, sodium cellulosate, polyoxyethylene glycol, W 166, polyethylene propylene alcohol, Epicholorohydrin or their any combination.
7. the prescription of a kind of biodegradable Sunlover 10 thermoplastic material according to claim 1 is characterized in that: described reductive agent is S-WAT, Sodium Metabisulphate 65, potassium acid sulfite, Sodium Nitrite, sodium hydrosulfite 90min, Sodium Pyrosulfite, sulfoxylic acid potassium, sour sulfite, xitix or their any combination.
8. the prescription of a kind of biodegradable Sunlover 10 thermoplastic material according to claim 1 is characterized in that: prescription comprises cellulosic fibre 1-25% (weight percent).
9. according to the prescription of claim 1 or 8 described a kind of biodegradable Sunlover 10 thermoplastic materials, it is characterized in that: cellulosic fibre is ether of cellulose, methylcellulose gum, Natvosol, Walocel MT 20.000PV, hydroxypropylcellulose, sodium cellulose glycolate or their any combination.
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| CN107189449A (en) * | 2017-05-10 | 2017-09-22 | 孟亚平 | A kind of edible tableware |
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