EP2776514A1 - Verfahren zur herstellung von milchprotein-nanopartikeln - Google Patents
Verfahren zur herstellung von milchprotein-nanopartikelnInfo
- Publication number
- EP2776514A1 EP2776514A1 EP12801468.5A EP12801468A EP2776514A1 EP 2776514 A1 EP2776514 A1 EP 2776514A1 EP 12801468 A EP12801468 A EP 12801468A EP 2776514 A1 EP2776514 A1 EP 2776514A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- milk
- nanoparticles
- protein
- treatment
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- 102000014171 Milk Proteins Human genes 0.000 title claims abstract description 23
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- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims abstract description 45
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- 102000004169 proteins and genes Human genes 0.000 claims abstract description 39
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- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 9
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- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
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- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
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- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
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- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
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- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- QVKOLZOAOSNSHQ-UHFFFAOYSA-N prop-1-ene;prop-2-enoic acid Chemical compound CC=C.OC(=O)C=C QVKOLZOAOSNSHQ-UHFFFAOYSA-N 0.000 description 1
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- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 235000010356 sorbitol Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- 229940100613 topical solution Drugs 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 229920003170 water-soluble synthetic polymer Polymers 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/107—General 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
- C07K1/1072—General 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 by covalent attachment of residues or functional groups
- C07K1/1077—General 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 by covalent attachment of residues or functional groups by covalent attachment of residues other than amino acids or peptide residues, e.g. sugars, polyols, fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4732—Casein
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/76—Albumins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0016—Plasticisers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2389/00—Characterised by the use of proteins; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/18—Plasticising macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/005—Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Definitions
- Japanese Patent 20090280148 (akiko Aimi) describes casein-based nanoparticles that are stable in the acidic range and that can be prepared with another active ingredient without the use of surfactants and synthetic polymers having a controllable size.
- the casein is dissolved in a basic, aqueous medium between pH 8 and pH 11 in a buffer medium or ethanol.
- a casein-based biopolymer and the detection by photometric evaluation of the nanoparticles has been described, there is no description with respect to industrial production. A post-treatment of the corresponding suspension to achieve an economically useful product is not described.
- German patent PCT / EP2007 / 052320 (BASF SE) "Process for the preparation of polymeric nanoparticles” comprises semisynthetic protective colloids, including casein, in which case the polymer product is obtained starting from polymerizable monomers using light energy. Absorber, UV treatment and the necessary photoinitiator as a chemical compound that releases free radicals under the influence of light. Photo initiators are indispensable in UV treatment, because they ensure the chemical crosslinking process under the UV lamp EU directive already with a share of 2.5% in the recipe, the tree fish symbol is a labeling requirement and must be disposed of in hazardous waste.
- nanoparticles presented so far shows in numerous investigations possible harmful environmental and harmful aspects of nanotechnologies, such as the inclusion of the particles in the organism via the respiratory tract, the skin and the mouth, even in already on the market products such as cosmetics and food additives.
- the invention is based on the invention to avoid the disadvantages mentioned above and to produce nanoparticles preferably from renewable raw materials and preferably without the addition of acrylates and fossil raw materials.
- the nanoparticles have a water content. To impart moisture resistance.
- the invention is intended in particular to reduce the processing time and the use of chemicals, wherein the nanoparticles are preferably and largely to be produced from renewable or biodegradable raw materials. At the same time, water and energy consumption are to be reduced and productivity increased.
- the object is achieved by a method according to the main claim:
- the present invention is directed to nanoparticles prepared by a continuous or discontinuous process of a composition comprising destructured milk proteins, biodegradable thermoplastic polymers and plasticizers.
- At least one milk-derived protein or alternatively also a bacterium-produced protein is plasticized together with a plasticizer at temperatures between room temperature and 140 ° C under mechanical stress.
- the invention is based on the finding that the milk proteins and in particular casein and its derivatives can be plasticized and polymerized in this way. It is preferably provided that the plasticizing takes place at temperatures preferably up to 140 ° C.
- the protein is intensively mixed or kneaded together with a plasticizer and subjected to mechanical stress.
- the required plasticizing temperature is significantly reduced by the plasticizer.
- the milk protein is preferably casein or lactalbumin or soy protein.
- the milk-derived protein can be made by precipitating milk in situ.
- the milk in mixture with rennet, other suitable enzymes or acid introduced directly as a flocculated mixture in the process or the pressed flocculated protein can be used wet.
- a separately previously obtained, possibly purified, pure or mixed protein, i. a protein fraction from milk are used, e.g. dried as a powder.
- the protein fraction can also be produced by ultrafiltration or by cell cultures.
- the milk proteins can be modified, for example, with additional salts such as sodium and potassium in further processing steps, so that a casein is produced.
- the milk protein used according to the invention can be mixed with other proteins in a proportion of preferably up to 70% by weight, based on the milk protein.
- other albumins such as ovalbumin and vegetable proteins, in particular lupine protein, soy protein or wheat proteins, in particular gluten in question.
- the mixture of solvent and protein is heated, usually under pressure conditions and shear, to accelerate the crosslinking process.
- Chemical or enzymatic agents can also be used to destructivate and crosslink the milk proteins, oxidize or derivatize, etherify, saponify and esterify.
- milk proteins are destructured by dissolving the milk proteins in water. The milk proteins are completely destructed if there are no clumps that affect the polymerisation.
- a plasticizer can be used in the present invention to destructurise the milk proteins and allow the milk proteins to flow, i. H. to produce thermoplastic milk proteins.
- the same plasticizer or other plasticizer can be used to increase melt processability, or two separate plasticizers can be used.
- the plasticizers can also improve the flexibility of the final products, believed to be due to the lowering of the glass transition temperature of the composition by the plasticizer.
- the plasticizers are substantially compatible with the polymeric components of the present invention so that the plasticizers can effectively modify the properties of the composition.
- the term "substantially compatible" means that the plasticizer, when heated to a temperature above the softening and / or melting temperature of the composition, is capable of forming a substantially homogeneous mixture with milk proteins.
- the plasticizer is preferably water, which is used in an amount between 20 and 80% based on the weight of the protein, preferably in an amount of about 40 to 50 wt .-% of the protein content.
- plasticizers instead of water or in a mixture with this other plasticizers, in particular alcohols, polyols, carbohydrates in aqueous solution and in particular aqueous polysaccharide solutions can be used.
- plasticizers and associated proportions by weight are preferred: hydrogen bridge-forming organic compounds having no hydroxyl group, e.g. Urea and derivatives, animal proteins, e.g. Gelantine, - vegetable proteins such as e.g. Cotton, soybean, and sunflower proteins, esters of generating acids which are biodegradable, e.g. Citric acid, adipic acid, stearic acid, oleic acid, hydrocarbon-based acids, e.g. Ethylene acrylic acid, ethylene maleic acid, butadiene acrylic acid, butadienoic acid, propylene acrylic acid, propylene maleic acid, sugar, e.g.
- Maltose, lactose, sucrose, fructose, maltodextrin, glycerol, pentaerythritol and sugar alcohols e.g. Malite, mannitol, sorbitol, xylitol, polyols, e.g. Hexanetriol, glycols and the like, also mixtures and polymers, - sugar anhydrides, e.g. Sorbitan, esters, e.g.
- hydroxylic plasticizer Important influencing factors are the affinity for the proteins, the amount of protein and the molecular weight. Glycerine and sugar alcohols are among the most important plasticizers. Parts by weight of plasticizers are e.g. 5% - 55%, but may also be in the range of 2% - 75%. Any of alcohols, polyols, esters and polyesters may be used in proportions by weight, preferably up to 30% in the polymer blend.
- Theological properties are the Theological properties, so that a good processing is possible. Strain-strain solidification is necessary to form a stable polymer structure.
- the melting temperature is usually in a temperature range of 30 ° C to 190 ° C. Additional temperatures should be lowered with diluents and plasticizers.
- the biodegradability of the polymers i. their decomposition by living things and their enzymes is an important property of the polymeric milk protein nanoparticles.
- Biodegradable thermoplastic polymers suitable for use in the present invention include, for example, lactic acid polymers, lactide polymers, glycolide polymers, including their homo- and copolymers, and mixtures thereof; aliphatic polyesters of dibasic diols / acids; aliphatic Polyesteramides, aromatic polyesters, also of modified polyethylene terephthalates and polybutylene terephthalates; polycaprolactones; aliphatic / aromatic copolyesters; Poly (3-hydroxyalkanoates), including those copolymers and / or other -valerates, - hexanoates and alkanoates, polyesters and dialkanoyl polymers, polyamides and copolymers of polyethylene / vinyl alcohol.
- thermoplastic polymer for this invention, polyvinyl alcohol and copolymers, aliphatic amide and ester copolymers composed of monomers, e.g. Dialcohols (1, 4-butanediol, 1, 3-propanediol, 1, 6-hexanediol, etc.) or ethylene and diethylene glycol, aliphatic polyester amides, (aliphatic esters are formed with aliphatic amides) or by other reactions, such as.
- monomers e.g. Dialcohols (1, 4-butanediol, 1, 3-propanediol, 1, 6-hexanediol, etc.
- aliphatic polyester amides aliphatic esters are formed with aliphatic amides
- Polybutylene succinate / adipate copolymer polyalkylene; Polypentamethylsuccinate; Polyhexamethylsuccinate; Polyheptamethylsuccinate; Polyoctamethylsuccinate; Polyalkylene oxalates such as polyethylene oxalate and polybutylene oxalate polyalkylene succinate copolymers such as polyethylene succinate-adipate copolymer and; Polyalkylene oxalate copolymers such as polybutylene oxalate / succinate copolymer and polybutylene oxalate / adipate copolymer; Polybutylene oxalate / succinate / adipate terpolymers; and mixtures thereof are non-limiting examples of aliphatic polyesters of dibasic acids / diols, e.g. from polymerizations of acids and alcohols or ring-opening reactions and are suitable for the production of a polymer.
- biodegradable polymers are aliphatic / aromatic copolyesters. These are derived from dicarboxylic acids and derivatives such as malonic, succinic, glutaric, adipic, pimelic, azelaic, sebacic, fumaric, 2,2-dimethylglutaric, suberic, 1,3-cyclopentanedicarboxylic , 1,4-Cyclohexanedicarboxylic, 1,3-cyclohexanedicarboxylic, diglycol, itaconic, maleic, 2,5-norbornanedicarboxylic, 1,4-terephthalic, 1,3-terephthalic, 2,6-naphthoic -, 1, 5 Naphthoic acid, ester-forming derivatives and mixtures thereof, and diols, eg, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, 1,3-
- Examples of such aliphatic / aromatic copolyesters include blends of poly (tetramethylene glutarate-co-terephthalate), poly (tetramethylene glutarate-co-terephthalate), poly (tetramethylene glutarate-co-terephthalate), poly (tetramethylene glutarate-co-terephthalate), poly (tetramethylene glutarate), co-terephthalate-co-diglycolate), poly (ethylene glutarate-co-terephthalate), poly (tetramethylene adipate-co-terephthalate), an 85/15 blend of poly (tetramethylene succinate-co-terephthalate), poly (tetramethylene-co-ethylene-glutarate-co terephthalate), poly (tetramethylene-co-ethylene-glutarate-co-terephthalate).
- the processability of the protein mass can be modified by other materials to influence the physical and mechanical properties of the protein mass but also of the final product.
- Non-limiting examples include thermoplastic polymers, crystallization accelerators or inhibitors, odor masking agents, crosslinking agents, emulsifiers, salts, lubricants, surfactants, cyclodextrins, lubricants, other optical brighteners, antioxidants, processing aids, flame retardants, dyes, pigments, fillers, proteins and their alkali salts, waxes, Adhesive resins, extenders and mixtures thereof. These adjuvants are bound to the protein matrix and influence their properties.
- Salts can be added to the melt.
- Non-limiting examples of salts include sodium chloride, potassium chloride, sodium sulfate, ammonium sulfate, and mixtures thereof.
- Salts can affect the solubility of the protein in water, but also the mechanical properties. Salts can serve as binders between the protein molecules.
- lubricants can affect the stability of the polymer. These can reduce the stickiness of the polymer and reduce the coefficient of friction.
- Polyethylene would be a non-limiting example.
- the physical properties of the polymer composition may be affected by other proteins, including without limitation, plant proteins such as sunflower protein or animal such as gelatin. Water-soluble polysaccharides and water-soluble synthetic polymers, such as polyacrylic acids, can also influence the mechanical properties.
- Monoglycerides and diglycerides and phosphatides, as well as other animal and vegetable fats can influence and promote the flow properties of the biopolymer.
- Inorganic fillers are also among the possible additives and can be used as processing agents. Possible examples without limitation are oxides, silicates, carbonates, lime, clay, limestone and kieselguhr and inorganic salts. Stearate-based salts and rosin can be used to modify the protein mixture.
- Amino acids the components of the proteins and peptides may be added to the polymer composition to enhance particular sheet structures or mechanical properties.
- glutamic acid, histidine, trytophan, etc. are mentioned as examples.
- additives include enzymes, surfactants, acids, serpins, as well as phenolic plant molecules, which can contribute as crosslinkers and to improve the mechanical properties, as well as resistance to water and protease resistance.
- wet strength is a necessary feature in most products. Therefore, it is necessary to add wet strength resins as a crosslinking agent.
- natural polymers can also be added as additives. Possible examples of natural polymers, without limiting the choice, would be albumins, soy protein, zein protein, chitosan, and cellulose.-polylactide "and" PLA "which can be used in an amount of 0.1% -80%.
- synthetic polymers such as, inter alia, polyvinyl alcohol, as well as polyesters, or ethers, such as polyethylene glycol, aldehydes, such as glutaraldehyde and acrylic acids.
- thermoplastics that can be used for co-polymerization, such as - without limitation: polypropylene, polyethylene, polyamides, polyesters and copolymers thereof. Other high molecular weight polymers are also possible.
- Carbohydrates and polysaccharides, as well as amyloses, oligosaccharides and chenodeoxycholic acids can be used as further auxiliaries and additives.
- Salts, carboxylic acids, dicarboxylic acids and carbonates, as well as their anhydrides, salts and esters can also be used as additional crosslinkers.
- Hydroxyde, butyl ester, as well as aliphatic hydrocarbons are other ways to cross-link molecules and form macromolecules.
- additives and auxiliaries such as lipophilic, hydrophobic, hydrophilic, hydroscopic additives, gloss modifiers and crosslinkers may be provided.
- the additives and auxiliaries should overall not exceed a proportion by weight of at most about 30% by weight, based on the protein.
- lipophilic additives vegetable oils, alcohols, fats and can be chosen, which readily hydrophobicize the polymer composition during plasticizing.
- waxes and greases can be used which add strength to the polymer composition. As waxes are preferred carnauba wax, beeswax, candelilla wax and other naturally derived waxes.
- the nanoparticles can be further treated or the bound substance can be treated.
- a hydrophilic or hydrophobic surface treatment can be added to adjust the surface energy and chemical nature of the fabric.
- hydrophobic nanoparticles or the polymer can be treated with wetting agents to facilitate the absorption of aqueous liquids.
- a bound substance may also be treated with a topical solution containing surfactants, pigments, lubricants, salt, Contains enzymes or other materials to further adjust the surface properties of the MP nanoparticles or the polymer composition.
- the milk protein nanoparticles or their polymer composition are preferably prepared in a bottom up or top down process with the required viscosity, in addition to the previously known and described production processes. This serves to increase productivity.
- the polymer composition is prepared by the continuous or batch processes known from the literature and the person skilled in the art, preferably by mixing or extruding a masterbatch with the addition of additives or by mixing the polymer mass by metering in the raw materials and additives during mixing or extrusion.
- the polymer composition corresponds to a polymer in which the materials are converted by heating in a plastic state and thus deformed.
- the temperature exceeds the glass transition temperature of the protein, so that it passes from the amorphous to the rubbery plastic state.
- this can be further processed directly, preferably to nanoparticles in the top-down process.
- the polymer composition may be further processed into nanoparticles immediately after exiting the die, or in at least one later processing step.
- the polymer composition can also pass through a bath prior to curing, this procedure is not particularly preferred and usually not required.
- the polymer composition may be subjected to a spray treatment after exiting the nozzle.
- smoothing agents, waxes, lipophilic or crosslinking agents on the surface of the polymer composition be applied.
- crosslinkers the following are preferred, that is, generally different salt solutions, preferably calcium chloride solution, dialdehyde starch solution, or aqueous lactic acid.
- the nanoparticles or the polymer can be a gas treatment or an ice treatment or a drying and blowing treatment or an ion treatment or a UV treatment or an enzyme treatment, as well as a renaturation by salts or esterification, etherification, saponification or a further crosslinking, and a Needling and hydroentanglement and the Kaladrieren etc. be subjected.
- the resulting nanoparticles and their products can be used for any purpose. They can therefore be used for all types of medical biomaterials, for the cosmetics industry, as skin care products, e.g. also be used with UV protection, masking materials, food industry, industrial substances, medical technology, etc., polymers MP nanoparticles can be useful in the fields of textiles and paper making used.
- the multi-constituent nanoparticles of the present invention may be in many different configurations.
- Ingredient as used herein by definition means the chemical species or material.
- Nanoparticles may have a monocomponent or multicomponent configuration. Component as used herein is defined as a separate part of the nanoparticle that is in spatial relationship with another part of the nanoparticle. The resulting nanoparticles can in turn be applied to a matrix.
- the advantages achieved by the invention include the fact that in the production of nanoparticles according to the invention the reduction of harmful substances and environmentally harmful substances during the process and on the nanoparticles itself is made possible.
- the nanoparticles are biodegradable.
- the particularly advantageous properties of the milk protein nanoparticles are attributed to firming structural changes (textural structure) during the plasticization.
- the nano-sized particles preferably having a diameter of 80-500 nanometers, are preferably made with a top-down or bottom-up method to allow for the highest possible productivity. All manufacturing methods for nanoparticles described in the art and in the literature are possible without exception.
- Essential to the invention is the preparation of a homogeneously plasticized polymer, preferably a biogenic biopolymer, which is preferably biodegradable.
- nanoparticles have been developed on this basis to date which are water-resistant and sufficiently protease-acid and alkali-resistant.
- nanoparticles which are preferably made from renewable raw materials, with a proportion of milk proteins and with properties such as water resistance, sufficient mechanical properties, such as tensile strength, tensile strength, elastic, antibacterial and biodegradable, and the possibility exists by changing the raw material additions meet the requirements of the intended use to influence the properties of the protein nanoparticles.
- Example 1 Preparation of a milk protein-polymer mass.
- the extrusion takes place with a twin-screw extruder type 30 E of the company. Collin with a diameter of 30 mm.
- the preparation of the nanoparticles is carried out by the extruded polymer mass is then extruded by high-energy ball mills pulverized into nanoparticles. Heating takes place via 4 cylinder heating zones with the following temperature sequence 65 ° C, 74 ° C, 75 ° C, 60 ° C:
- the casein powder is added via a vibrating trough.
- a hose pump is used to add water.
- the additives are added.
- the polymer composition is applied via a top down method e.g. processed a laser ablation process into nanoparticles.
- the nanoparticles may have a diameter of 80 nm.
- the raw materials are added to the extruder and mixed the polymer composition.
- a device 4 for infrared irradiation and blowing the polymer mass passes into a grinder 5, where it is optionally ground with different degrees of grinding.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Genetics & Genomics (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Toxicology (AREA)
- Zoology (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011118394 | 2011-11-12 | ||
| PCT/EP2012/072424 WO2013068598A1 (de) | 2011-11-12 | 2012-11-12 | Verfahren zur herstellung von milchprotein-nanopartikeln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2776514A1 true EP2776514A1 (de) | 2014-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12801468.5A Withdrawn EP2776514A1 (de) | 2011-11-12 | 2012-11-12 | Verfahren zur herstellung von milchprotein-nanopartikeln |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20150024430A1 (de) |
| EP (1) | EP2776514A1 (de) |
| WO (1) | WO2013068598A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010054661A1 (de) * | 2010-12-15 | 2012-06-28 | Anke Domaske | Verfahren zur Herstellung von Milchproteinfasern und daraus gewonnene Milchproteinfaserprodukte |
| WO2024215783A1 (en) * | 2023-04-10 | 2024-10-17 | University Of Connecticut | Recycleable bioplastics, methods of manufacture thereof and articles comprising the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5523293A (en) * | 1994-05-25 | 1996-06-04 | Iowa State University Research Foundation, Inc. | Soy protein-based thermoplastic composition for preparing molded articles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK752701A (de) * | 1937-03-02 | |||
| US2521738A (en) * | 1944-06-15 | 1950-09-12 | Thomas L Mcmeekin | Process for the production of artificial bristles and the like from proteins |
| NZ198737A (en) * | 1980-10-29 | 1983-11-30 | Unilever Plc | Textured casein-containing material |
| DE102010054661A1 (de) * | 2010-12-15 | 2012-06-28 | Anke Domaske | Verfahren zur Herstellung von Milchproteinfasern und daraus gewonnene Milchproteinfaserprodukte |
| WO2013068597A1 (de) * | 2011-11-12 | 2013-05-16 | Anke Domaske | Verfahren zur herstellung eines milchprotein-kunststoffes (mp - kunststoff) |
-
2012
- 2012-11-12 EP EP12801468.5A patent/EP2776514A1/de not_active Withdrawn
- 2012-11-12 US US14/357,247 patent/US20150024430A1/en not_active Abandoned
- 2012-11-12 WO PCT/EP2012/072424 patent/WO2013068598A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5523293A (en) * | 1994-05-25 | 1996-06-04 | Iowa State University Research Foundation, Inc. | Soy protein-based thermoplastic composition for preparing molded articles |
Non-Patent Citations (4)
| Title |
|---|
| HERNANDEZ-IZQUIERDO V M ET AL: "Thermoplastic Processing of Proteins for Film Formation-A Review", JOURNAL OF FOOD SCIENCE, WILEY-BLACKWELL PUBLISHING, INC, US, vol. 73, no. 2, 1 January 2008 (2008-01-01), pages R30 - R39, XP003026332, ISSN: 0022-1147, [retrieved on 20080124], DOI: 10.1111/J.1750-3841.2007.00636.X * |
| HONG S I ET AL: "Mechanical properties and biodegradability of poly-@?-caprolactone/soy protein isolate blends compatibilized by coconut oil", POLYMER DEGRADATION AND STABILITY, BARKING, GB, vol. 94, no. 10, 1 October 2009 (2009-10-01), pages 1876 - 1881, XP026719448, ISSN: 0141-3910, [retrieved on 20090508], DOI: 10.1016/J.POLYMDEGRADSTAB.2009.04.029 * |
| JINWEN ZHANG ET AL: "Morphology and Properties of Soy Protein and Polylactide Blends", BIOMACROMOLECULES, vol. 7, no. 5, 1 May 2006 (2006-05-01), US, pages 1551 - 1561, XP055527628, ISSN: 1525-7797, DOI: 10.1021/bm050888p * |
| See also references of WO2013068598A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150024430A1 (en) | 2015-01-22 |
| WO2013068598A1 (de) | 2013-05-16 |
| WO2013068598A4 (de) | 2013-07-11 |
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