EP4045570A1 - Composition à base d'écailles de poisson - Google Patents
Composition à base d'écailles de poissonInfo
- Publication number
- EP4045570A1 EP4045570A1 EP20790277.6A EP20790277A EP4045570A1 EP 4045570 A1 EP4045570 A1 EP 4045570A1 EP 20790277 A EP20790277 A EP 20790277A EP 4045570 A1 EP4045570 A1 EP 4045570A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- scales
- additive
- fish
- composition
- composition according
- 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- Withdrawn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
- 239000000203 mixture Substances 0.000 title claims abstract description 53
- 241000251468 Actinopterygii Species 0.000 claims abstract description 43
- 239000000654 additive Substances 0.000 claims abstract description 30
- 230000000996 additive effect Effects 0.000 claims abstract description 29
- 102000008186 Collagen Human genes 0.000 claims abstract description 14
- 108010035532 Collagen Proteins 0.000 claims abstract description 14
- 229920001436 collagen Polymers 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000007062 hydrolysis Effects 0.000 claims description 15
- 238000006460 hydrolysis reaction Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 14
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 10
- 239000001263 FEMA 3042 Substances 0.000 claims description 10
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 10
- 229920002258 tannic acid Polymers 0.000 claims description 10
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 10
- 229940033123 tannic acid Drugs 0.000 claims description 10
- 235000015523 tannic acid Nutrition 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 235000019688 fish Nutrition 0.000 description 31
- 239000000463 material Substances 0.000 description 16
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 150000001413 amino acids Chemical class 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 108010010803 Gelatin Proteins 0.000 description 4
- PMMYEEVYMWASQN-DMTCNVIQSA-N Hydroxyproline Chemical compound O[C@H]1CN[C@H](C(O)=O)C1 PMMYEEVYMWASQN-DMTCNVIQSA-N 0.000 description 4
- PMMYEEVYMWASQN-UHFFFAOYSA-N dl-hydroxyproline Natural products OC1C[NH2+]C(C([O-])=O)C1 PMMYEEVYMWASQN-UHFFFAOYSA-N 0.000 description 4
- 229920000159 gelatin Polymers 0.000 description 4
- 239000008273 gelatin Substances 0.000 description 4
- 235000019322 gelatine Nutrition 0.000 description 4
- 235000011852 gelatine desserts Nutrition 0.000 description 4
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 4
- 229960002591 hydroxyproline Drugs 0.000 description 4
- FGMPLJWBKKVCDB-UHFFFAOYSA-N trans-L-hydroxy-proline Natural products ON1CCCC1C(O)=O FGMPLJWBKKVCDB-UHFFFAOYSA-N 0.000 description 4
- 239000000975 dye Substances 0.000 description 3
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 3
- 150000008442 polyphenolic compounds Chemical class 0.000 description 3
- 235000013824 polyphenols Nutrition 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000012736 patent blue V Nutrition 0.000 description 2
- 239000004177 patent blue V Substances 0.000 description 2
- 235000012731 ponceau 4R Nutrition 0.000 description 2
- 239000004175 ponceau 4R Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 235000012756 tartrazine Nutrition 0.000 description 2
- 239000004149 tartrazine Substances 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 241000473391 Archosargus rhomboidalis Species 0.000 description 1
- 241000972773 Aulopiformes Species 0.000 description 1
- RTMBGDBBDQKNNZ-UHFFFAOYSA-L C.I. Acid Blue 3 Chemical compound [Ca+2].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=C(O)C=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1.C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=C(O)C=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 RTMBGDBBDQKNNZ-UHFFFAOYSA-L 0.000 description 1
- 241000555825 Clupeidae Species 0.000 description 1
- 241000252233 Cyprinus carpio Species 0.000 description 1
- 241000723298 Dicentrarchus labrax Species 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- ONIBWKKTOPOVIA-UHFFFAOYSA-N Proline Natural products OC(=O)C1CCCN1 ONIBWKKTOPOVIA-UHFFFAOYSA-N 0.000 description 1
- 241000276707 Tilapia Species 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 210000004268 dentin Anatomy 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000000989 food dye Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 phenolic alcohols Chemical class 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- UJMBCXLDXJUMFB-GLCFPVLVSA-K tartrazine Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-GLCFPVLVSA-K 0.000 description 1
- 229960000943 tartrazine Drugs 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 231100000701 toxic element Toxicity 0.000 description 1
- 238000011426 transformation method Methods 0.000 description 1
- SWGJCIMEBVHMTA-UHFFFAOYSA-K trisodium;6-oxido-4-sulfo-5-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].C1=CC=C2C(N=NC3=C4C(=CC(=CC4=CC=C3O)S([O-])(=O)=O)S([O-])(=O)=O)=CC=C(S([O-])(=O)=O)C2=C1 SWGJCIMEBVHMTA-UHFFFAOYSA-K 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H1/00—Macromolecular products derived from proteins
- C08H1/06—Macromolecular products derived from proteins derived from horn, hoofs, hair, skin or leather
-
- 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
- C08K5/0041—Optical brightening agents, organic pigments
-
- 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
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
- C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
- C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2125/00—Compositions for processes using internal mould release agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2140/00—Compositions for moulding powders
Definitions
- the invention relates to a composition based on fish scales, its manufacturing process, and the materials obtained from this composition.
- a composition based on fish scales and a material based on fish scales are already known in the state of the art, in particular from document DE358541. This document envisages in particular the production of a material entirely made of fish scales by pressing and heating.
- this composition does not make it possible to obtain satisfactory materials for manufacturing solid objects, because the materials obtained do not have good mechanical properties (objects that are too fragile, not sufficiently rigid, etc.). In addition, they degrade quickly, especially since they do not have good resistance to humidity, i.e. water is apt to degrade the material. These materials cannot therefore be used to make objects that may contain water and / or be used in water or in environments with high humidity.
- the aim of the invention is in particular to overcome the aforementioned problems, by proposing a composition based on fish scales, not comprising toxic elements and / or harmful to the environment, and making it possible to obtain materials. and articles having good mechanical resistance, good resistance to water, and therefore durable over time.
- the subject of the invention thus relates to a composition based on fish scales, characterized in that it comprises between 50% and 90% by weight of fish scales, and between 10 and 50% by weight of an additive making it possible to form chemical bonds between the collagen fibers of fish scales, the sum of the percentage of scales and of the percentage of additive being equal to 100.
- the preparation of the composition does not require chemical additives polluting the environment or harmful to health, moreover the resistance to water and to humidity of the parts obtained from the composition is markedly improved. Therefore, thanks to this composition it is possible to make objects based on fish scales, which can be used in humid environments.
- the additive is obtained from a natural resource such as tannic acid in solution at a concentration of between 1 and 20%.
- Tannic acid is commonly used for the tanning of skins, and surprisingly the inventors have found that it was particularly suitable for the manufacture of the composition, since it makes it possible to obtain markedly improved properties, due to the fact that the collagen fibers contained in the scales bind with each other and with the phenols present in tannic acid.
- the fish scales are in the form of powder with a particle size of between 0.5 ⁇ m and 1.5 mm.
- the use of a powder makes it possible to obtain a material whose properties are homogeneous and constant. It is advantageous for the scales to be hydrolyzed or else subjected to a cooking step before being reduced to powder because this allows a reduction to a finer powder than with scales which have not undergone this treatment. Indeed, uncooked or undercooked scales cannot be reduced to powder with a particle size of less than 1mm.
- a further subject of the invention is a process for manufacturing a composition based on fish scales comprising the steps of: a) supplying scales; b) cleaning of scales; c) hydrolysis of scales; d) drying the scales; e) mixing the scales with an additive in solution in proportions of between 50% and 90% fish scales, and between 10 and 50% additive.
- the hydrolysis of the scales is carried out in water at a temperature between 60 ° C and 100 ° C for a period of preferably between 5 and 120 minutes.
- a step of grinding the scales is introduced in order to obtain a powder with a particle size of between 0.5 ⁇ m and 1.5 mm.
- a subject of the invention is also a part obtained by mechanical compression and drying of a composition based on fish scales, comprising between 50% and 90% of fish scales, and between 10 and 50% of an additive. making it possible to form bonds between the collagen fibers, the additive being obtained from a natural resource.
- a subject of the invention is a process for manufacturing a part from a composition based on fish scales, comprising between 50% and 90% of fish scales, and between 10 and 50% of fish scales.
- an additive making it possible to form bonds between the collagen fibers, the additive being obtained from a natural resource, in which: a) the composition is placed in a mold, b) the composition is compressed using a press at a pressure between 5 and 40 tonnes c) the part obtained in step b) is dried
- the internal walls of the mold include a self-lubricating polymer such as POM or PTFE.
- composition based on fish scales according to the invention comprises between 50% and 90% by weight of fish scales, and between 10% and 50% by weight of an additive making it possible to improve the resistance properties chemicals, and in particular to form bonds between the collagen fibers, the sum of the percentage of scales and the percentage of additive being equal to 100.
- a fish scale consists mainly of hydroxyapatite and collagen, which contains hydroxyproline. More precisely, a scale is composed of a mineral (about 60%) present in the form of crystals of calcium phosphate (hydroxyapatite) integrated at different levels in a network of collagen fibers.
- Collagen is a natural polymer made up of a series of amino acids. It is the most common protein in most living tissues.
- a fish scale may also contain dentin.
- the additive is preferably derived from a non-polluting and biodegradable renewable resource.
- renewable resource is understood to mean a natural resource whose stock can be reconstituted over a short period on a human scale of time. The composition is thus entirely derived from renewable, non-polluting and biodegradable resources.
- the additive is tannic acid.
- Tannic acid is a natural polyphenolic compound belonging to the tannin family. Tannic acid acts as a bridging agent, it creates bonds with amino acids and encompasses the collagen-hydroxyapatite complex of the scale, and forms a hydrophobic layer forcing proteins to precipitate.
- polyphenols react with amino acids in collagen fibrils in several ways. Hydrogen bonds are created between the carbonyl groups of proline or other amino acids and the aromatic rings of polyphenols. Hydrophobic interactions occur between phenolic alcohols and the carbonyl of amino acids. Finally, weaker ionic bonds have a stabilizing function on the mixture.
- Tannic acid is a renewable resource that is non-toxic for the environment and for humans.
- the scales used in the composition according to the invention have preferably undergone, prior to the preparation of the composition, a hydrolysis treatment in water at a temperature between 60 and 100 ° C, followed by drying.
- a hydrolysis treatment in water at a temperature between 60 and 100 ° C, followed by drying.
- the water of the juices remaining after the hydrolysis step is also evaporated, and the dry residue of the juices is retained, which is then incorporated into the composition.
- the scales and the dry residue of the juices remaining after hydrolysis are ground to obtain a powder.
- the parts obtained from compositions comprising powders are of better quality, that is to say that they have, for example, good mechanical properties and water resistance.
- the particle size of the powder obtained after grinding is between 0.5 ⁇ m and 1.5 mm.
- the composition also comprises natural pigments or dyes in an amount between 0.05% and 5%.
- the dyes are for example chosen without limitation from food dyes, such as azo dyes (Tartrazine or E102, Ponceau 4R or E124), patent blue V or E131, or textile dyes.
- the first step of the process consists in supplying or collecting the scales obtained from the scaling of fish, generally, but not limited to, intended for human consumption.
- the scales can be collected from fishermen, in auctions, processing workshops or in agro-food factories.
- the scales are chosen so as to have suitable properties for the manufacture of parts having good mechanical strength, and of a satisfactory aesthetic appearance.
- the inventors have observed in particular that the level of hydroxyproline in the scales has a direct link with the quality of the scales.
- the inventors have in particular observed that there are differences in the level of hydroxyproline in the scales between the species of fish, for example according to the species from hot or cold regions. Scales collected from warm regions have more hydroxyproline than those from cold water.
- the scales are collected from the following fish species: sardines, salmon, tilapia, carp, sea bass, sea bream.
- the batches of scales collected undergo draining, for example in auction tanks.
- the main purpose of draining is to allow a more precise measurement of the actual weight of the scales alone. Preferably, however, no draining is carried out.
- the scales are subjected to hydrolysis.
- the hydrolysis takes place in water, at a temperature between 60 ° C and 100 ° C.
- the amount of water relative to the scales is between 50% and 200% by weight.
- the duration of the hydrolysis is between 5 and 120 minutes.
- the purpose of this hydrolysis is to extract the gelatin from the scales. This improves the mechanical and processing properties of the parts obtained from the composition prepared with the scales.
- Gelatin which is hydrolyzed collagen from the scales, acts as a binder or “resin” component.
- the additive which is a bridging agent, binds the gelatin molecules / fibers together.
- the hydroxyapatite (or calcium phosphate) of the scales constitutes a reinforcement and gives the composition its mechanical strength and natural fire resistance.
- an optional chemical cleaning of the scales is carried out.
- a residual odor remains after hydrolysis, which it is preferable to eliminate.
- the cleaning can be carried out for example with a light detergent product, a treatment with ultraviolet rays, an enzymatic treatment, possibly hydrogen peroxide, or any other product capable of suppressing the odor while not damaging the scales and retaining their properties, in particular their ability to form parts with good mechanical properties.
- the hydrolyzed and optionally cleaned scales, as well as, preferably, the juices remaining after hydrolysis, are then dried, at a temperature between 30 ° C and 80 ° C, for a period of between 12 and 48 hours, preferably under vacuum. air. Drying in an air vacuum, preferably at a vacuum of 80 mbar, allows this drying to be carried out at low temperatures, thus minimizing denaturation of the organic content of the scale.
- the scales and the “dried juices” are then ground to obtain a powder with a particle size of between 1.5 mm and 0.5 ⁇ m. If the scales are not crushed, they partly retain their flexibility, and then generate hollow areas of varying sizes in the parts obtained from the composition. These points constitute areas of weakness making the material unsuitable for industrial use. Whole scales are also difficult to load into molds and allow only poor molding precision. In addition, too coarse powders also make it difficult to process and produce sheets of material.
- whole scales are used because their fibrous structure gives the material and the parts obtained from the composition great rigidity and good stability during drying.
- a composition is then prepared with the scales.
- the dried scales, as well as the dry residues of the juices, preferably in powder form, are mixed with an additive intended to improve the water resistance properties of the materials / parts obtained with the composition.
- water resistance is meant the absence of degradation, especially mechanical, of parts in the presence of water or humidity.
- the additive can be tannic acid at a concentration of between 1% and 20%, the proportion of scales and additive being between 50/50 and 90/10.
- the additive is chosen from products which bind the collagen fibers of the scales together and thus obtain resistant parts.
- composition obtained in the above step is used to make parts, for example plates intended for interior fittings, furniture or fashion accessories.
- these parts can be made by compression molding at room temperature of the composition.
- the compression pressure is between 5 tons and 40 tons.
- other transformation methods can be envisaged such as calendering and extrusion.
- the walls of the mold are coated with a non-stick or self-lubricating material, such as POM or PTFE.
- the parts obtained After molding, it is preferable to allow the parts obtained to harden while keeping them in shape to avoid deformation problems. Curing takes place at a temperature between 20 and 30 ° C, in the open air, for a period of between 12 hours and 5 days. It is also possible to carry out treatment with ultra violet rays. It is also possible to dry the parts obtained from the composition under vacuum in ovens or in drying lanes, optionally with the use of microwaves.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Dermatology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Artificial Filaments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1911401A FR3101880B1 (fr) | 2019-10-14 | 2019-10-14 | Composition à base d’écailles de poisson |
| PCT/EP2020/078686 WO2021074100A1 (fr) | 2019-10-14 | 2020-10-13 | Composition à base d'écailles de poisson |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4045570A1 true EP4045570A1 (fr) | 2022-08-24 |
Family
ID=69158094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20790277.6A Withdrawn EP4045570A1 (fr) | 2019-10-14 | 2020-10-13 | Composition à base d'écailles de poisson |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4045570A1 (fr) |
| FR (1) | FR3101880B1 (fr) |
| WO (1) | WO2021074100A1 (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE358541C (de) | 1920-12-21 | 1922-09-12 | Schuetz Wilhelm | Verfahren zur Herstellung einer plastischen Masse |
| CN101480503B (zh) * | 2008-01-09 | 2012-10-17 | 柏登生医股份有限公司 | 配制生物材料的方法 |
-
2019
- 2019-10-14 FR FR1911401A patent/FR3101880B1/fr active Active
-
2020
- 2020-10-13 EP EP20790277.6A patent/EP4045570A1/fr not_active Withdrawn
- 2020-10-13 WO PCT/EP2020/078686 patent/WO2021074100A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3101880B1 (fr) | 2023-01-13 |
| FR3101880A1 (fr) | 2021-04-16 |
| WO2021074100A1 (fr) | 2021-04-22 |
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