WO2005110083A1 - Composición acuosa crioprotectora y método de aplicación - Google Patents
Composición acuosa crioprotectora y método de aplicación Download PDFInfo
- Publication number
- WO2005110083A1 WO2005110083A1 PCT/ES2004/000067 ES2004000067W WO2005110083A1 WO 2005110083 A1 WO2005110083 A1 WO 2005110083A1 ES 2004000067 W ES2004000067 W ES 2004000067W WO 2005110083 A1 WO2005110083 A1 WO 2005110083A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aqueous composition
- composition according
- cryoprotective
- cryoprotective aqueous
- water
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N3/00—Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves or protection against physical influences such as UV radiation using chemical compositions; Grafting wax
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/26—Phosphorus; Compounds thereof
Definitions
- the present invention relates to the field of cryoprotective treatments to increase resistance to frost damage in plants. More particularly, the invention relates to cryoprotective aqueous compositions of fruit and tree plants and the method of application thereof.
- Damage caused by frost depends not only on the low temperatures that are reached, but also on factors such as the duration, the speed of the cooling-heating cycle, the phenological state of the plant, the maturity of the tissues, the state general plant, type of frost, etc.
- Cryoprotectants can be defined as compounds that, applied by spraying, for example, are absorbed by the living organs of the plant and stored for a certain time in the interstitial liquid, protecting it from damage caused by frosts until they are metabolized and disappear - -
- US Patent 5124061 describes a method for increasing the resistance of plants to frost damage which comprises applying an aqueous composition of a choline salt with a monocarboxylic or polycarboxylic acid.
- Said composition may also contain glycerin, propylene glycol and surfactants based on condensates of ethylene oxide and propylene oxide.
- US Patent 5252118 refers to a method for producing a cryoprotectant for plants based on depolymerized pectins in the presence of phosphoric acid as the base of said cryoprotectant which also includes a nutrient solution based on sodium, potassium, iron salts. , magnesium, manganese, zinc, copper and borax.
- US 4735737 also refers to the use of pectins, specifically, to the use of a protective foam formed by three parts of egg white and one of pectin extracted from apples for small-scale applications, such as gardening.
- US patent 4618442 for its part, provides a composition of nonionic surfactants based on ethylene oxide and propylene oxide combined with urea.
- US 4834899 refers to the application of a bactericide to eliminate bacteria that act as ice crystallization nuclei, said bactericide being a mixture of acetic or lactic acid and sodium or potassium chlorite.
- the present invention provides an alternative cryoprotective composition that has great advantages over the prior art compositions in terms of survival rates of the treated species and in terms of the duration of the cryoprotective effect. .
- an object of the present invention is to provide an aqueous cryoprotective composition of fruit plants and trees.
- Another object of the present invention is to provide the use of said cryoprotective aqueous composition.
- Another object of the present invention is to provide a method for increasing the resistance to frost damage in plants and fruit trees by directly applying said cryoprotective aqueous composition to the plants and trees to be treated.
- aqueous cryoprotective composition of the invention characterized in that it comprises: (i) 25-75% (w / w) polyols (ii) 5-25 % (w / w) of an antioxidant emulsion (ii ⁇ ) 0.1-1% (w / w) of phosphates
- said cryoprotective aqueous composition of the invention comprises: (i) 70% (w / w) polyols (ii) 15% (w / w) of an antioxidant emulsion (iii) 0.3% (w / w) phosphate
- polyols refers to chemical compounds with two or more hydroxyl groups. Within said compounds there may be mentioned: triols, such as, for example, glycerin or 1, 2,6-hexanotriol; ethylene oxide derivatives of the generic formula OH- (CH 2 CH 2 ) n H, where n is an integer between 1 and 10, preferably between 1 and 4; and derivatives of propylene oxide of generic formula
- n is an integer between 1 and 7.
- these polyols When these polyols are sprayed on the plants, they pass into their vascular system and from there they are distributed to the rest of the tissues. They act by lowering the freezing point of plant tissue fluids, thereby preventing the formation of ice crystals and the breakdown of cellular membrane systems that they cause. In addition, its high hygroscopicity favors water retention in plant tissues and reduces the effects caused by the low temperatures produced when water evaporates rapidly, either as a result of frost (evaporation frost), drying (wind gusts in dry environments) or other stress situations.
- frost evaporation frost
- drying wind gusts in dry environments
- the present inventors have discovered the mechanism of assimilation of polyols, in particular that of glycerin, by determining that plants store them in the form of phosphates. Therefore, the inclusion of water soluble inorganic phosphorus compounds in the cryoprotective aqueous composition of the invention guarantees a sufficient presence of phosphate at the time of frost and, therefore, a greater assimilation of the polyols of the applied composition.
- the antioxidant compounds that are part of the antioxidant emulsion are able to inhibit the action of free radicals and increase the resistance of plant organs in adverse conditions, such as low temperatures, desiccation or other stress situations, as previously mentioned.
- Said antioxidant compounds are not soluble in the aqueous solution of polyols, so it is necessary to add them in the form of an emulsion prepared previously.
- the surfactants used in said emulsion also favor the absorption of the polyols since they facilitate their penetration through the surface system of the plants (the epidermis and the cuticle formed from wax).
- the cryoprotective aqueous composition of the invention comprises phosphates that are selected from the group consisting of monopotassium phosphate, dipotassium phosphate, monosodium phosphate and disodium phosphate.
- the cryoprotective aqueous composition of the invention comprises polyols selected from the group consisting of glycerin, ethylene glycol, propylene glycol, diethylene glycol, butyldiglycol, hexylene glycol, polyethylene glycol (molecular weight of 200-10,000) and polyoxyethylene-polyoxypropylene copolymers (in a ratio 2.54: 1 and with a molecular weight of 2,000-7,000).
- Said polyol is preferably glycerin, a byproduct of soap making, biodegradable and ecological.
- the antioxidant emulsion comprises: - 25% (w / w) of antioxidants, 12.5% (w / w) of emulsifiers, and 0.2% ( p / p) of preservatives.
- said antioxidants are selected from the group consisting of vitamin E ( ⁇ -tocopherol), butyl-hydroxy-anisole (BHA), butyl-hydroxy-toluene (BHT) and alkyl gallates
- said antioxidant is a mixture of vitamin E and butyl hydroxy toluene (BHT) or a mixture of butyl hydroxy anisole (BHA) and butyl hydroxy toluene (BHT). More preferably, said antioxidant is a mixture of vitamin E and butyl hydroxy toluene (BHT) in a ratio of 1.77: 1.
- said emulsifiers may be emulsifiers of natural origin or non-ionic emulsifiers, selected from the group consisting of oxyethylene fatty alcohols, oxyethylene-oxypropylene fatty alcohols, sorbitan monooleate, oxyethylene sorbitan monooleate , oxyethylene fatty acids, soy lecithin, and mixtures thereof.
- the preservatives mentioned are used to sterilize the components of the cryoprotective aqueous composition and to prevent the growth of microorganisms (fungi and algae, mainly) within it, thus preventing their deterioration.
- said preservatives are selected from the group consisting of isothiazolines, formaldehyde, bromopol, chloroacteamide derivatives, sodium pentachlorophenate, parabens, and mixtures thereof, preferably being an isothiazoline.
- cryoprotective aqueous composition of the invention may optionally contain other minor components with positive effects on flowering and fruiting and which, in addition, enhance the cryoprotective effect thereof.
- the boron that plays an important role in the pollination and fruit set since it favors the germination of pollen and the growth of the pollen tube and, in addition, improves the resistance to a large number of fungal, bacterial and viral diseases and Increases the resistance of plants and trees to frost damage.
- Boron can be added in the form of boric acid or in the form of various alkali metal borates and ethanolamines, the dose of use thereof varying between 0.05% and 1% by weight.
- cryoprotective aqueous composition is provided as previously defined as a solution diluted in 90-97.5% (v / v) of water, preferably in 94% (v / v) of water.
- a method to increase the resistance to frost damage in plants and trees which consists in applying directly to plants and trees to treat an effective amount of a cryoprotective aqueous composition as previously defined as a solution diluted in 90-97.5% (v / v) water, preferably 94% (v / v) water, by spraying.
- hot water at 80 ° C is introduced into the reactor at a flow rate of approximately 500 l / h.
- the mixture is allowed to cool and when 50 ° C is reached, 2 kg of isothiazoline are added as a preservative.
- a stable yellowish-white emulsion is obtained miscible with water in any proportion.
- auxiliary tank with a capacity of 200 I, 140 I of water are introduced and 3 kg of dipotassium phosphate are added while stirring until complete dissolution.
- the result is a translucent white product, uniform and stable, which can be diluted in water in any proportion.
- a series of fruit trees (peaches, plums and apple trees) were sprayed with the cryoprotective aqueous composition of the invention diluted to 5% (v / v) in water. Waited 48 hours after application to simulate frost. The temperature reached was -7 ° C. As control fruit trees, another series of untreated fruit trees were considered.
- Lettuce seedlings in a state of 4 true leaves were used for this test. A total of six treatments were performed, spraying a total of 30 lettuces in each treatment and waiting 48 hours after application to simulate frost. Subsequently, their condition was observed after a freeze of -7 ° C. Table 3 shows the results obtained.
- the percentages express the active matter content of the product at the time of application.
- the duration of the cryoprotective effect in climatic chamber tests with artificial frosts is 4-7 days, depending on the plant species treated.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Agronomy & Crop Science (AREA)
- Plant Pathology (AREA)
- Dentistry (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2004/000067 WO2005110083A1 (es) | 2004-02-17 | 2004-02-17 | Composición acuosa crioprotectora y método de aplicación |
ES200650045A ES2265305B1 (es) | 2003-01-10 | 2004-02-17 | Composicion acuosa crioprotectora y metodo de aplicacion. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2004/000067 WO2005110083A1 (es) | 2004-02-17 | 2004-02-17 | Composición acuosa crioprotectora y método de aplicación |
Publications (1)
Publication Number | Publication Date |
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WO2005110083A1 true WO2005110083A1 (es) | 2005-11-24 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/ES2004/000067 WO2005110083A1 (es) | 2003-01-10 | 2004-02-17 | Composición acuosa crioprotectora y método de aplicación |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2157848A1 (en) * | 2007-06-18 | 2010-03-03 | The University of Alabama | Plant cryoprotectant compositions and methods of use |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3045394A (en) * | 1959-03-09 | 1962-07-24 | Dumas Milner Corp | Protection of plant life from frost damage |
US4207091A (en) * | 1976-02-09 | 1980-06-10 | Ciba-Geigy Corporation | Method of preventing plants from damage by frost |
US5653054A (en) * | 1995-10-31 | 1997-08-05 | Frost-B-Gone, Inc. | Process for preventing frost formation on plants |
US6180562B1 (en) * | 1999-01-20 | 2001-01-30 | The Egg Factory, L.L.C. | Compositions for protecting plants from frost and/or freeze and methods of application thereof |
US6391224B1 (en) * | 1998-09-21 | 2002-05-21 | 21St Century Medicine, Inc. | Polyvinyl alcohol compounds for inhibition of ice growth |
US20020063235A1 (en) * | 1999-11-30 | 2002-05-30 | Greg Fahy | Prevention of ice nucleation by polyglycerol |
US20020124462A1 (en) * | 2000-03-17 | 2002-09-12 | Curtis Virginia Lee | Method of protecting plants from cold injury |
US20030180704A1 (en) * | 2002-03-19 | 2003-09-25 | Brockbank Kelvin G.M. | Ice-controlling molecules and uses thereof |
EP1366663A1 (en) * | 2001-03-09 | 2003-12-03 | Kao Corporation | Method of improving crop |
-
2004
- 2004-02-17 WO PCT/ES2004/000067 patent/WO2005110083A1/es active IP Right Grant
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3045394A (en) * | 1959-03-09 | 1962-07-24 | Dumas Milner Corp | Protection of plant life from frost damage |
US4207091A (en) * | 1976-02-09 | 1980-06-10 | Ciba-Geigy Corporation | Method of preventing plants from damage by frost |
US5653054A (en) * | 1995-10-31 | 1997-08-05 | Frost-B-Gone, Inc. | Process for preventing frost formation on plants |
US6391224B1 (en) * | 1998-09-21 | 2002-05-21 | 21St Century Medicine, Inc. | Polyvinyl alcohol compounds for inhibition of ice growth |
US6180562B1 (en) * | 1999-01-20 | 2001-01-30 | The Egg Factory, L.L.C. | Compositions for protecting plants from frost and/or freeze and methods of application thereof |
US20020063235A1 (en) * | 1999-11-30 | 2002-05-30 | Greg Fahy | Prevention of ice nucleation by polyglycerol |
US20020124462A1 (en) * | 2000-03-17 | 2002-09-12 | Curtis Virginia Lee | Method of protecting plants from cold injury |
EP1366663A1 (en) * | 2001-03-09 | 2003-12-03 | Kao Corporation | Method of improving crop |
US20030180704A1 (en) * | 2002-03-19 | 2003-09-25 | Brockbank Kelvin G.M. | Ice-controlling molecules and uses thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2157848A1 (en) * | 2007-06-18 | 2010-03-03 | The University of Alabama | Plant cryoprotectant compositions and methods of use |
EP2157848A4 (en) * | 2007-06-18 | 2013-11-06 | Univ Alabama | PLANT CRYOPROTECTIVE COMPOSITIONS AND METHODS OF USE |
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