ITPD20110129A1 - COMPOSITIONS FOR AGRICULTURAL USE - Google Patents
COMPOSITIONS FOR AGRICULTURAL USE Download PDFInfo
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- ITPD20110129A1 ITPD20110129A1 IT000129A ITPD20110129A ITPD20110129A1 IT PD20110129 A1 ITPD20110129 A1 IT PD20110129A1 IT 000129 A IT000129 A IT 000129A IT PD20110129 A ITPD20110129 A IT PD20110129A IT PD20110129 A1 ITPD20110129 A1 IT PD20110129A1
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- IT
- Italy
- Prior art keywords
- composition
- crosslinking agent
- hyaluronic acid
- process according
- salts
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims description 36
- 238000000034 method Methods 0.000 claims description 23
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 claims description 22
- 229920002674 hyaluronan Polymers 0.000 claims description 22
- 229960003160 hyaluronic acid Drugs 0.000 claims description 22
- 150000003839 salts Chemical class 0.000 claims description 20
- 239000003431 cross linking reagent Substances 0.000 claims description 17
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 8
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical group [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 5
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 5
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 5
- 239000001120 potassium sulphate Substances 0.000 claims description 5
- 235000011151 potassium sulphates Nutrition 0.000 claims description 5
- 239000004310 lactic acid Substances 0.000 claims description 4
- 235000014655 lactic acid Nutrition 0.000 claims description 4
- 238000011282 treatment Methods 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 229940103272 aluminum potassium sulfate Drugs 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 239000002537 cosmetic Substances 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 235000005985 organic acids Nutrition 0.000 claims description 2
- 239000000575 pesticide Substances 0.000 claims description 2
- 239000008194 pharmaceutical composition Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229920002683 Glycosaminoglycan Polymers 0.000 description 2
- 229920001222 biopolymer Polymers 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- AEMOLEFTQBMNLQ-AQKNRBDQSA-N D-glucopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-AQKNRBDQSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 229940097043 glucuronic acid Drugs 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229950006780 n-acetylglucosamine Drugs 0.000 description 1
- 238000002663 nebulization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
- C08B37/0063—Glycosaminoglycans or mucopolysaccharides, e.g. keratan sulfate; Derivatives thereof, e.g. fucoidan
- C08B37/0072—Hyaluronic acid, i.e. HA or hyaluronan; Derivatives thereof, e.g. crosslinked hyaluronic acid (hylan) or hyaluronates
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protection of plants
- A01G13/30—Ground coverings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protection of plants
- A01G13/30—Ground coverings
- A01G13/32—Mats; Nets; Sheets or films
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protection of plants
- A01G13/30—Ground coverings
- A01G13/32—Mats; Nets; Sheets or films
- A01G13/33—Sheets or films
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protection of plants
- A01G13/30—Ground coverings
- A01G13/35—Mulches, i.e. loose material
-
- 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
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
COMPOSIZIONI PER USO AGRICOLO COMPOSITIONS FOR AGRICULTURAL USE
DESCRIZIONE DESCRIPTION
Oggetto del presente trovato è l'utilizzo di una composizione comprendente acido ialuronico, suoi sali e/o suoi derivati per trattamenti agricoli di pacciamatura ed un procedimento per detto utilizzo. The object of the present invention is the use of a composition comprising hyaluronic acid, its salts and / or its derivatives for agricultural mulching treatments and a process for said use.
In agricoltura la ricerca di nuove tecnologie compatibili con la tutela dell'ambiente è particolarmente sentita allo scopo di ridurre l'inquinamento e i costi, oltre a garantire l'efficacia della produzione. La pacciamatura dei terreni agricoli è una tecnica mirata all'aumento della fertilità e della produttività che utilizza generalmente film plastici di polietilene e copolimeri di etilene vinile acetato. Questi materiali presentano i gravi svantaggi di essere altamente inquinanti poiché non biodegradabili e generalmente dopo l'utilizzo vengono abbandonati al suolo o bruciati in loco. In agriculture, the search for new technologies compatible with the protection of the environment is particularly important in order to reduce pollution and costs, as well as guaranteeing the effectiveness of production. Mulching of agricultural land is a technique aimed at increasing fertility and productivity that generally uses polyethylene plastic films and ethylene vinyl acetate copolymers. These materials have the serious disadvantages of being highly polluting as they are not biodegradable and generally after use they are abandoned on the ground or burned on site.
Sono noti prodotti per la pacciamatura che possono venire dispensati in loco tramite nebulizzazione, ma i materiali utilizzati a questo scopo hanno generalmente una scarsa reticolazione che risulta in bassa resistenza meccanica ed alta permeabilità all'acqua, che non permette di trattenere sul terreno l'umidità che favorisce lo sviluppo della pianta oggetto di coltivazione. Mulching products are known that can be dispensed on site by nebulization, but the materials used for this purpose generally have poor cross-linking resulting in low mechanical strength and high water permeability, which does not allow moisture to be retained on the ground. which favors the development of the plant being cultivated.
Compito del presente trovato è quello di fornire un materiale da utilizzare nella pacciamatura di terreni agricoli che si possa facilmente utilizzare a temperatura ambiente con le tecniche note nell'arte e sia biodegradabile eliminando o riducendo al minimo i residui nel terreno. The aim of the present invention is to provide a material to be used in the mulching of agricultural land which can be easily used at room temperature with the techniques known in the art and which is biodegradable by eliminating or minimizing residues in the soil.
Un altro scopo del presente trovato è quello di fornire un materiale per pacciamatura che sia resistente alla rottura anche se utilizzato in strati sottili e, al contempo, trattenga per un periodo di uno o più giorni l'acqua necessaria allo sviluppo della pianta da coltivare. Another object of the present invention is to provide a mulching material which is resistant to breaking even if used in thin layers and, at the same time, retains the water necessary for the development of the plant to be cultivated for a period of one or more days.
Questi ed altri scopi sono raggiunti tramite l'utilizzo per trattamenti agricoli di pacciamatura di una composizione acquosa comprendente acido ialuronico, suoi sali e/o suoi derivati. These and other purposes are achieved by using an aqueous composition comprising hyaluronic acid, its salts and / or its derivatives for agricultural mulching treatments.
Detti scopi sono stati inoltre raggiunti tramite un procedimento per la pacciamatura di colture agricole comprendente l'applicazione sulle aree interessate alla pacciamatura di una composizione acquosa comprendente acido ialuronico, suoi sali e/o derivati. Said purposes have also been achieved by means of a process for mulching agricultural crops comprising the application on the areas involved in mulching of an aqueous composition comprising hyaluronic acid, its salts and / or derivatives.
Nell'ambito della presente invenzione, il termine "terreni agricoli " comprende i terreni oggetto di coltura intensiva di specie vegetali per il consumo umano ed animale, per la produzione industriale di materie prime e a destinazione ortofrutticola . Within the scope of the present invention, the term "agricultural land" includes land subject to intensive cultivation of plant species for human and animal consumption, for the industrial production of raw materials and for fruit and vegetables.
L'acido ialuronico è un biopolimero naturale di tipo olisaccaridico ed è l'unico glicosaminoglicano (GAG) non solforato. Dal punto di vista strutturale, è un polimero contenente azoto oltre a carbonio, ossigeno ed idrogeno ed avente come monomeri L-acetilglucosammina ed acido glucuronico con un peso molecolare intorno ad 1,5 milione di unità di massa. Hyaluronic acid is a natural biopolymer of the olysaccharide type and is the only non-sulfur glycosaminoglycan (GAG). From the structural point of view, it is a polymer containing nitrogen in addition to carbon, oxygen and hydrogen and having as monomers L-acetylglucosamine and glucuronic acid with a molecular weight of around 1.5 million mass units.
Un aspetto della presente invenzione riguarda l'utilizzo di una composizione acquosa comprendente acido ialuronico, suoi sali e/o suoi derivati per trattamenti agricoli di pacciamatura. An aspect of the present invention relates to the use of an aqueous composition comprising hyaluronic acid, its salts and / or its derivatives for agricultural mulching treatments.
Si è sorprendentemente trovato che l'utilizzo di composizioni comprendenti acido ialuronico, suoi sali e/o suoi derivati permette di ottenere a temperatura ambiente una pellicola particolarmente adatta all'utilizzo per la pacciamatura poiché, oltre ad essere completamente biodegradabile, è molto resistente alla tensione ed alla rottura anche se di spessore pellicolare. Inoltre, le pellicole comprendenti acido ialuronico, suoi sali e/o suoi derivati permettono di mantenere 1'idratazione del terreno sotto l'area sottoposta a pacciamatura anche per periodi superiori a 24-48 ore. Infatti, si è trovato che le pellicole comprendenti acido ialuronico, suoi sali e/o suoi derivati sono in grado di trattenere l'acqua, ad esempio quella piovana o derivante dalla rugiada, grazie alla capacità di idratarsi complessando molecole d'acqua, in quantità molto superiore rispetto ai materiali generalmente usati nelle pellicole di rivestimento e senza degradarsi né essere dilavato dalle precipitazioni. It has surprisingly been found that the use of compositions comprising hyaluronic acid, its salts and / or its derivatives allows to obtain at room temperature a film particularly suitable for use for mulching since, in addition to being completely biodegradable, it is very resistant to tension. and to breaking even if of film thickness. Furthermore, the films comprising hyaluronic acid, its salts and / or its derivatives allow to maintain the hydration of the soil under the area subjected to mulching even for periods longer than 24-48 hours. In fact, it has been found that films comprising hyaluronic acid, its salts and / or its derivatives are able to retain water, for example rain or dew, thanks to the ability to hydrate by complexing water molecules, in quantity much higher than the materials generally used in coating films and without degrading or being washed away by precipitation.
La presenza di azoto nelle composizioni utilizzate nell'invenzione può favorire la captazione di tale elemento, utile come nutrimento delle specie vegetali oggetto di coltura. The presence of nitrogen in the compositions used in the invention can favor the uptake of this element, useful as nourishment for the plant species being cultivated.
Le soluzioni di acido ialuronico, i suoi sali o derivati in acqua possono formare un gel la cui viscosità dipende direttamente dalla concentrazione del biopolimero idrosolubile, ma può essere aumentata a parità di concentrazione per reticolazione, cioè formazione di legami intermolecolari oltre che intramolecolari, mediante elettroliti (sali) od aggiustamenti del pH. Solutions of hyaluronic acid, its salts or derivatives in water can form a gel whose viscosity directly depends on the concentration of the water-soluble biopolymer, but it can be increased at the same concentration by crosslinking, i.e. formation of intermolecular as well as intramolecular bonds, by means of electrolytes (salts) or pH adjustments.
La viscosità di dette soluzioni può essere finemente regolata a seconda delle condizioni di pacciamatura. The viscosity of these solutions can be finely adjusted according to the mulching conditions.
Si è sorprendentemente trovato che la reticolazione ottenibile con composizioni comprendenti acido ialuronico è notevolmente superiore a quella di composizioni comprendenti altri polimeri o materiali usati abitualmente in agricoltura, caratteristica che permette di ottenere pellicole particolarmente compatte e meccanicamente resistenti anche con spessori molto ridotti. It has surprisingly been found that the crosslinking obtainable with compositions comprising hyaluronic acid is considerably higher than that of compositions comprising other polymers or materials commonly used in agriculture, a characteristic which allows to obtain particularly compact and mechanically resistant films even with very reduced thicknesses.
Preferibilmente, nell'utilizzo dell'invenzione la composizione comprendente acido ialuronico, i suoi sali o derivati è sotto forma di gel acquoso. Preferably, in using the invention, the composition comprising hyaluronic acid, its salts or derivatives is in the form of an aqueous gel.
Preferibilmente, detta composizione comprende inoltre un agente reticolante. Preferably, said composition further comprises a crosslinking agent.
Più preferibilmente, in detta composizione l'agente reticolante è selezionato tra solfato di alluminio e potassio, sali con cationi mono, bi e trivalenti. Più preferibilmente, detto agente reticolante è solfato di alluminio e potassio. More preferably, in said composition the crosslinking agent is selected from aluminum and potassium sulphate, salts with mono, bi and trivalent cations. More preferably, said crosslinking agent is aluminum potassium sulfate.
Preferibilmente, nell'utilizzo dell'invenzione la composizione comprendente acido ialuronico, i suoi sali o derivati ha pH compreso tra 2 e 3,5. Preferably, when using the invention, the composition comprising hyaluronic acid, its salts or derivatives has a pH of between 2 and 3.5.
Opzionalmente, nell'utilizzo dell'invenzione la composizione comprendente acido ialuronico, i suoi sali o derivati può comprendere altri prodotti, normalmente usati per la pacciamatura, come additivi, quali ad esempio: acidi organici, quali l'acido lattico, l'acido citrico e l'acido tartarico, titanio ossido, nero fumo, paste organiche, fitofarmaci etc. Optionally, in using the invention, the composition comprising hyaluronic acid, its salts or derivatives can comprise other products, normally used for mulching, as additives, such as for example: organic acids, such as lactic acid, citric acid and tartaric acid, titanium oxide, carbon black, organic pastes, pesticides etc.
In un altro aspetto, la presente invenzione riguarda un procedimento per la pacciamatura di colture agricole comprendente l'applicazione sulle aree interessate alla pacciamatura di una composizione acquosa comprendente acido ialuronico, suoi sali e/o derivati. In another aspect, the present invention relates to a process for mulching agricultural crops comprising the application on the areas involved in mulching of an aqueous composition comprising hyaluronic acid, its salts and / or derivatives.
Nel procedimento dell'invenzione, la composizione acquosa può essere applicata al terreno nelle zone da ricoprire per la pacciamatura con i mezzi generalmente utilizzati a questo scopo. In the process of the invention, the aqueous composition can be applied to the soil in the areas to be covered for mulching with the means generally used for this purpose.
Preferibilmente, l'applicazione viene effettuata sotto pressione. Più preferibilmente, detta applicazione sotto pressione viene effettuata a spruzzo. Preferably, the application is carried out under pressure. More preferably, said application under pressure is carried out by spraying.
Preferibilmente, nel procedimento dell'invenzione la composizione comprende un agente reticolante. Preferibilmente, detto agente reticolante è selezionato tra solfato di alluminio e potassio, sali con cationi mono, bi e trivalenti e/o detto acido è scelto tra acido citrico, tartarico, lattico. Preferably, in the process of the invention the composition comprises a crosslinking agent. Preferably, said crosslinking agent is selected from aluminum and potassium sulphate, salts with mono, bi and trivalent cations and / or said acid is selected from citric, tartaric, lactic acid.
Preferibilmente, nella composizione di detto procedimento l'agente reticolante è solfato di alluminio e potassio e la composizione ha pH tra 2 e 3,5. Preferably, in the composition of said process the crosslinking agent is aluminum potassium sulphate and the composition has a pH between 2 and 3.5.
In un altro aspetto, la presente invenzione riguarda un procedimento per ottenere una composizione in forma di gel acquoso di acido ialuronico comprendente la reticolazione in soluzione acquosa di acido ialuronico con l'aggiunta di un agente reticolante. In another aspect, the present invention relates to a process for obtaining a composition in the form of an aqueous gel of hyaluronic acid comprising cross-linking in aqueous solution of hyaluronic acid with the addition of a cross-linking agent.
Preferibilmente, detto procedimento comprende inoltre l'aggiunta di un acido in modo da ottenere un pH tra 2 e 3.5. Preferably, said process further comprises the addition of an acid so as to obtain a pH between 2 and 3.5.
Preferibilmente, in detto procedimento l'agente reticolante è selezionato tra solfato di alluminio e potassio, sali con cationi mono, bi e trivalenti e/o detto acido è scelto tra acido citrico, tartarico, lattico. Preferably, in said process the crosslinking agent is selected from aluminum and potassium sulphate, salts with mono, bi and trivalent cations and / or said acid is selected from citric, tartaric, lactic acid.
Preferibilmente, in detto procedimento l'agente reticolante è il solfato di alluminio e potassio e il pH è tra 2 e 3.5. In un altro aspetto, la presente invenzione riguarda una composizione di acido ialuronico in forma di gel acquoso ottenibile con detto procedimento. Preferably, in said process the cross-linking agent is aluminum potassium sulphate and the pH is between 2 and 3.5. In another aspect, the present invention relates to a composition of hyaluronic acid in the form of an aqueous gel obtainable with said process.
In un altro aspetto la presente invenzione riguarda l'utilizzo di detta composizione in forma di gel acquoso per la preparazione di composizioni cosmetiche e di composizioni farmaceutiche. In another aspect, the present invention relates to the use of said composition in the form of an aqueous gel for the preparation of cosmetic compositions and pharmaceutical compositions.
Claims (18)
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| IT000129A ITPD20110129A1 (en) | 2011-04-18 | 2011-04-18 | COMPOSITIONS FOR AGRICULTURAL USE |
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| IT000129A ITPD20110129A1 (en) | 2011-04-18 | 2011-04-18 | COMPOSITIONS FOR AGRICULTURAL USE |
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