CN101715760A - 1-methylcyclopropene liquid preparation - Google Patents
1-methylcyclopropene liquid preparation Download PDFInfo
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- CN101715760A CN101715760A CN200910230685A CN200910230685A CN101715760A CN 101715760 A CN101715760 A CN 101715760A CN 200910230685 A CN200910230685 A CN 200910230685A CN 200910230685 A CN200910230685 A CN 200910230685A CN 101715760 A CN101715760 A CN 101715760A
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Abstract
The invention belongs to the field of agriculture technology, particularly discloses a 1-methylcyclopropene liquid preparation which is prepared by adding an organic solvent, emulsifier and an auxiliary agent on the basis of a 1-methylcyclopropene stead solution. The 1-methylcyclopropene liquid preparation acts on plants or part of the plants by methods of sprinkling, dipping and the like, and performs a preservation function or functions of resisting environmental threats, inhibiting the generation of hormones of plant ethylene, abscisic acid and the like, and enhancing resistance and the like. Compared with traditional products, the invention has convenient use and wide application range and maximizes the function of 1-methylcyclopropene (MCP), and meanwhile, the invention has the advantages of novel processing idea, simple technology, low cost, low equipment requirement and stable product performance.
Description
(1) technical field
The invention belongs to agricultural technology field, particularly a kind of 1-methylcyclopropene liquid preparation.
(2) background technology
1-methyl cyclopropene (1-Methylcyclopropene) is called for short 1-MCP, it is the best fruits and vegetables flower antistaling agent of finding the late 20th century, it can suppress the generation of plant endogenous ethene, can suppress the effect of exogenous ethylene again, delays senility and fresh-keeping effect thereby play.
The 1-methyl cyclopropene is a little cycloolefin, exists with gas under the normal pressure under the normal temperature, because molecular memory is at bigger tension force, so instability extremely generally only exists about two hours under the normal temperature.Be both at home and abroad synthesize the 1-methylcyclopropene gas after, use inclusion complex to coat or use absorbent to absorb immediately, make the stable formulation product, product mainly contains 2 kinds of forms of solid and liquid and exists.
The 1-methyl cyclopropene has obtained extensive use at home and abroad at present, document both domestic and external and patent report are more, patent as: 99817402.9,200610042683.2,200610069625.9,200610134263.7 and 200810115785.1 etc., document is as fruit tree journal 2003,20 (1): in 12～17 " 1-MCP is to the influence of apple post-harvest physiology ", gardening journal, 2003,30 (1): 11-14. " 1-MCP is to the influence of Starkrimson ethylene metabolism and storage quality ", Plant Physiology Communications, 2003,39 (5): 437-440. " the 1-methyl cyclopropene is to the influence of the banana after-ripening of low temperature storage " etc.Mostly 1-MCP is stifling to be handled the occupation mode of 1-MCP in order to carry out at confined space in patent and the document.Operation techniques such as the processing time of 1-MCP fruit and vegetable preservation flowers, temperature, concentration have been mature on the whole, but 1-MCP also has been subjected to certain condition restriction in use at present, need to create an airtight relatively environment, handle for most fruits and the actual creation airtight condition that is difficult to of vegetables.
Research is in recent years also found, the 1-methyl cyclopropene is except that there are good fresh-keeping effect and development prospect in fruits and vegetables flower freshness field, the 1-methyl cyclopropene also can be used for suffering the plant of environment-stress such as arid, high temperature, low temperature, play the generation that suppresses plant ethene, abscisic acid or other hormones, the opposing environment-stress, strengthen the plant resistance, prevent aging thereby reach, effects such as volume increase.As everyone knows, plant is subjected to environment-stress such as high temperature, arid, and plant produces a series of reaction, causes plant growing, growth and maturation to be subjected to obvious suppression, and the 1-methyl cyclopropene then shows excellent performance in addressing the above problem.
The airtight stifling occupation mode of 1-MCP is restricted the bigger effect of its performance at present, is difficult at present 1-MCP is applied to the fruits and vegetables flower growth stage, also is difficult to the anti-environment-stress of plant etc.We can make the 1-methyl cyclopropene a kind of formulation products at expectation, directly behind the thin up, by spraying, smear or mode such as irrigation acting on plant, make it bring into play bigger effect.
In the disclosed patent of China, application number 200510072728.6 and 200710148222.8 patent, especially 200710148222.8 patented technologies are the typical case, its patent disclosure will contain cyclopropylene pressed powder be added to the water, at first add a kind of and multiple in surfactant, alcohol, hydrocarbon ils and their mixture in the water, supply moisture after the gentle agitation then, the use of spraying.In application number is 200810129621.4 patent, disclose the cyclopropylene inclusion complex has been joined in the oil that contains dispersant, surfactant, make oily product suspension through grinding, spray use then.At present there is certain problem technically in the above-mentioned 1-MCP product that sprays use: (1) water can dissolve 1-MCP inclusion complex α cyclodextrin very easily to be evaporated 1-MCP gas or evaporate in spray process in the environment from liquid, cause bigger waste and reduce the 1-MCP treatment effect; (2) processing technology is comparatively complicated, the equipment requirement height that produces instruments, and the properties of product instability is prone to problems such as precipitation.At present 1-MCP can spray to be with product and carry out formulation reprocessing, the 1-methylcyclopropene liquid preparation of the complete liquid state that Shang Weijian can be used for spraying on the basis of solid 1-MCP powder.
(3) summary of the invention
The present invention provides a kind of 1-methylcyclopropene liquid preparation that sprays, dips use in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of 1-methylcyclopropene liquid preparation, its special character is: with the 1-methyl cyclopropene stable solution of being made up of 1-methyl cyclopropene, one or more alcohols materials and one or more aldehydes matters is host, add organic solvent, emulsifier and host by certain proportioning and form, wherein the percentage by weight between each component is: 1-methyl cyclopropene stable solution 1～80%, organic solvent 10～70%, emulsifier 1～50%, synergist 0.1～5%.
The percentage by weight of preferred each component of the present invention is: 1-methyl cyclopropene stable solution 10～50%, organic solvent 20～50%, emulsifier 5～30%, synergist 1～5%.
The processing technology of 1-methylcyclopropene liquid preparation is proportionally with after 1-methyl cyclopropene stable solution and the organic solvent mixing and stirring, and adding stirs behind emulsifier and the synergist again gets final product; The active ingredient mass percent of the 1-methylcyclopropene liquid preparation of preparation is 0.1～4.0%.
In the 1-methyl cyclopropene stable solution of the present invention, alcohols material comprises monohydric alcohol or polyalcohol, and aldehydes matter is
Wherein, R
nBe the hydro carbons of C1～C5, n=0,1,2,3; R
1The hydro carbons of=H, C1～C5, n
1=0,1,2,3; The mass fraction of 1-methyl cyclopropene is 0.5～5.0%.The 1-methyl cyclopropene stable solution is the existing product on the market among the present invention, does not do detailed qualification herein.
Organic solvent of the present invention is one or more in arene, aliphatic hydrocarbon, halogenated hydrocarbons, lipid, the diol, derivatives.Organic solvent can dissolve each other in varing proportions with monohydric alcohol and polyalcohol, but does not dissolve each other with water, and it is dimethylbenzene preferably, benzene, toluene, 1,1,1-trichloroethanes, glycol monoethyl ether, ethylene glycol monoethyl ether, ethyl acetate, one or more in the dimethyl suflfate.
Emulsifier of the present invention perhaps is the composition of a kind of anion surfactant and one or more non-ionic surface active agents for one or more HLB values are 2～15 non-ionic surface active agent.Wherein, the preferred dibenzyl xenol of non-ionic surface active agent APEO, styryl phenol APEO, styryl phenol polyoxyethylene (10) ether, calcium dodecyl benzene sulfonate, phenethyl phenol polyoxyethylene poly-oxygen propylene aether, OPEO, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, anion surfactant preferred alkyl benzene sulfonate, alkylsulfonate, sulphosuccinates, lignosulfonates, polyoxyethylene alkyl ether sulfate salt.
HLB value (Hydrophile Lipophile Balance) is measuring of the comprehensive hydrophilic and oleophilic effect power that has with oleophilic moiety in the numeric representation surfactant molecule and hydrophilic portion branch, and it is one of key property of emulsifier.Select suitable emulsifier, organic solvent better can be scattered in the water, form atomic little drop, form stable emulsion, being sprayed onto plant surface can be well wetting, opening up, and quickens plant to wanting the absorption of medicament.
Synergist of the present invention is one or both in azone, thiophene ketone, the organic silicon surfactant.Azone can increase the infiltration and the absorption of active ingredient.Organic silicon surfactant can reduce the surface tension of obtain solution, improves the penetration to plant surface, promotes the absorption of plant stomata, thereby plays the reduction spray amount, increases operation rate, and reduces cost, and improves the effect of drug effect.
The 1-methylcyclopropene liquid preparation of preparation can be by spraying, dip, smear and mode such as irrigation acting on a plant or a plant part, act on to self generation ethene or to more sensitive fruit and vegetable of ethylene ratio and flowers by modes such as sprinklings, play preservation, prolong the postharvest storage fresh keeping time, keep the quality of fruits and vegetables flowers, delay senility; The 1-methylcyclopropene liquid preparation can also spray processing such as seedling stage, florescence, the phase of bearing fruit etc. at the growing period of crop, can play the effect of environment-stress such as opposing high temperature, arid, plays the effect that prevents aging and increasing both production and income.
1-methylcyclopropene liquid preparation of the present invention, advantage are on 1-methyl cyclopropene stable solution basis, add organic solvent and emulsifier, have made the creamy formulation of class, and the 1-methyl cyclopropene is in complete anhydrous environment, can stable existence.The 1-methylcyclopropene liquid preparation has overcome the technical barrier that 1-MCP gas discharges behind the 1-methyl cyclopropene stable solution thin up from the aqueous solution.The 1-methylcyclopropene liquid preparation is thin up in use, form organic solution behind alcohols and the immiscible organic solvent, do to be scattered in the water by emulsifier in order to the form of fine droplet, the 1-MCP molecule then still is present in the small organic solution drop, can not discharge 1-MCP gas because of thin up.After touching plant surface by modes such as spraying, dip during use, the 1-methylcyclopropene liquid preparation can be sprawled at plant surface, evenly disperse, by the infiltration and the GAS ABSORPTION of organic solution, 1-MCP and plant are had an effect, play fresh-keeping and anti-environment-stress effect.
Compare with the product that contains the 1-methyl cyclopropene at present and to have the following advantages:
(1) the 1-methylcyclopropene liquid preparation such as directly sprays, dips at processing behind the thin up, uses simply, convenient, no longer is subjected to the restriction of closed environment during use, and applicable variety is more, and is wider;
(2) the 1-methylcyclopropene liquid preparation can be adopted the back use plant, can use in the plant production stage again, and the scope of application is wider, more helps peasant's large-scale application, makes the 1-methyl change the bigger effect of propylene performance;
(3) 1-methylcyclopropene liquid preparation processing technology thinking novelty, technology is simple, and process equipment requires low, and cost is low, and properties of product are stable;
(4) embodiment
The 1-methyl cyclopropene stable solution that adopts among the embodiment, active constituent content are respectively 3.0% and 2.5% two kind, are that Shandong Yingyangyuan Food Technology Co., Ltd. produces.
Embodiment 1:1-methylcyclopropene liquid preparation prescription A
Prescription (percentage by weight): 3.0% (m/m) 1-methyl cyclopropene stable solution 33.3%; Dimethyl suflfate 50.0%; Emulsifier farming breast No. 400 15%; Synergist azone 1.7%.
Technology: at first 1-methyl cyclopropene stable solution and dimethyl suflfate are mixed, mix after adding emulsifier and synergist then again, promptly being prepared into the quality percentage composition is the 1.0%1-methylcyclopropene liquid preparation.
Embodiment 2:1-methylcyclopropene liquid preparation prescription B
Prescription (percentage by weight): 3.0% (m/m) 1-methyl cyclopropene stable solution 25%, dimethyl suflfate 40.0%, ethyl acetate 15.0%, emulsifier farming breast No. 400 10%, emulsifier agricultural emulsifier NO 5%, synergist organic silicon surfactant 5.0%.
Technology: at first 1-methyl cyclopropene stable solution and dimethyl suflfate, ethyl acetate are mixed, mix after adding two kinds of emulsifier and synergist then again, promptly being prepared into the quality percentage composition is the 0.75%1-methylcyclopropene liquid preparation.
Embodiment 3:1-methylcyclopropene liquid preparation prescription C
Prescription (percentage by weight): 2.5% (m/m) 1-methyl cyclopropene stable solution 50%, toluene 20.0%, 1,1,1-trichloroethanes 15.0%, emulsifier farming breast No. 400 8%, emulsifier farming breast No. 602 5%, synergist organic silicon surfactant 2.0%
Technology: at first with 1-methyl cyclopropene stable solution and dimethylbenzene, 1,1, the 1-trichloroethanes mixes, and mixes after adding two kinds of emulsifier and synergist then again, and promptly being prepared into the quality percentage composition is the 1.25%1-methylcyclopropene liquid preparation.
Embodiment 4:1-methylcyclopropene liquid preparation prescription D
Prescription (percentage by weight): 2.5% (m/m) 1-methyl cyclopropene stable solution 10%, dimethylbenzene 20.0%, glycol monoethyl ether 30.0%, emulsifier farming breast No. 404 20%, emulsifier farming breast No. 602 15%, synergist organic silicon surfactant 3.0%, synergist azone 2%.
Technology: at first 1-methyl cyclopropene stable solution and dimethylbenzene, glycol monoethyl ether are mixed, add two kinds of emulsifier then and two kinds of synergist mix again, being prepared into the quality percentage composition is the 0.25%1-methylcyclopropene liquid preparation.
Embodiment 5 1-MCP liquid preparations spray handles apple
Fuji apple (medium well) is being gathered preceding 5 days calm dusks, prescription A product thin up is made into contains the aqueous solution that 1-MCP concentration is 250ppm, then apple tree is sprayed, and sprays evenly.Apple is positioned in 25 ℃ of constant heat storages by the back part of normally gathering, and a part is positioned in-0.5 ℃～0 ℃ the freezer and observes.Do blank with the Fuji apple that does not do any processing.Get the apple that is untreated before adopting, the back of gathering is handled contrast through the airtight apple of handling in stifling 8 hours of 1-MCP stabilizing solution for stifling in 20 ℃ of conditions.Blank and stifling handle contrast and all be positioned in 25 ℃ of constant heat storages equally and in-0.5 ℃～0 ℃ the freezer.Apple hardness initial average output value 7.1kg/cm
2
25 ℃ of Fuji apples that constant heat storage is deposited, through 50 days, the average hardness of blank apple was reduced to 5.6kg/cm
2, descended 21.1%; 1-MCP sprays the apple hardness of handling and reduces to 6.6kg/cm
2, having descended 7.0%, the stifling apple of handling is reduced to 6.4kg/cm
2, descended 9.8%.Be positioned over the apple of-0.5 ℃～0 ℃ of freezer, after storing 240 days, the hardness of blank is reduced to 5.9kg/cm
2, spray to handle and reduce to 6.5kg/cm
2, 6.5kg/cm is reduced in stifling processing
2
Embodiment 6 1-MCP liquid preparations spray handles kiwi fruit
Qin Mei kiwi fruit (medium well) is being gathered preceding 2 days at dusk, and prescription B product thin up is made into the aqueous solution that 1-MCP concentration is 100ppm, then kiwi fruit is evenly sprayed.The interior storage of freezer that kiwi fruit is normally gathered and is placed on 0 ℃.Make blank with the Qin Mei kiwi fruit of not doing any processing.Through storage in 130 days, the kiwi fruit of contrast began deliquescing, and fruit soluble solids content mean value is 13%, the part deliquescing of hardness of fruit feel, and average hardness is 2.6kg/cm
2, spraying the kiwi fruit that 1-MCP handles, the content average out to 9.8% of fruit soluble solid, hardness mean value are 7.6kg/cm
2Can obviously prolong the storage time of kiwi fruit behind the sprinkling 1-MCP, the variation that slows down hardness and soluble solid content can prolong Qin Mei kiwi fruit storage ﹠ fresh-keeping period about 45 days.
Embodiment 7 1-MCP liquid preparations spray handles broccoli
Broccoli " solo dance " kind was gathered preceding 5 days, used prescription D product through thin up, was made into the aqueous solution that 1-MCP concentration is 100ppm, used the aqueous solution to spray broccoli, and spraying evenly.Select part not make the broccoli of any processing as blank.After gathering 1-MCP is handled the broccoli that sprays and contrast and transport the experiment freezer back, temperature is 5 ℃ in the freezer.Through contrast, the broccoli comparison of using 1-MCP to spray processing prolongs 35 days according to storage time, can obviously delay senility after the processing, reduces broccoli weightlessness etc.
Embodiment 8 1-MCP liquid preparations are used for the anti-environment-stress of corn
Under drought condition and under the hot conditions, use the 1-MCP liquid preparation to spray and handle corn.Prescription C product thin up is made into the aqueous solution that 1-MCP concentration is 200pmm, acts on the corn in seedling stage then by spray pattern, through 20 days, the corn contrast of spraying the corn of 1-MCP and not dealing with, the former corn growing way is good, and blade is roomy, the plant height.Respectively spray the 1-MCP liquid preparation again one time at heading stage and grain phase, through contrast, the corn yield comparison that use 1-MCP sprays is according to high by 10%.
Claims (8)
1. 1-methylcyclopropene liquid preparation, it is characterized in that: with the 1-methyl cyclopropene stable solution of being made up of 1-methyl cyclopropene, one or more alcohols materials and one or more aldehydes matters is host, add organic solvent, emulsifier and host by certain proportioning and form, wherein the percentage by weight between each component is: 1-methyl cyclopropene stable solution 1～80%, organic solvent 10～70%, emulsifier 1～50%, synergist 0.1～5%.
2. 1-methylcyclopropene liquid preparation according to claim 1 is characterized in that: the percentage by weight of described each component is: 1-methyl cyclopropene stable solution 10～50%, organic solvent 20～50%, emulsifier 5～30%, synergist 1～5%.
3. 1-methylcyclopropene liquid preparation according to claim 1 and 2 is characterized in that:
In the described 1-methyl cyclopropene stable solution, alcohols material comprises monohydric alcohol or polyalcohol, and aldehydes matter is
Wherein, R
nBe the hydro carbons of C1～C5, n=0,1,2,3; R
1The hydro carbons of=H, C1～C5, n
1=0,1,2,3; The mass fraction of 1-methyl cyclopropene is 0.5～5.0%.
4. 1-methylcyclopropene liquid preparation according to claim 3 is characterized in that: described organic solvent is one or more in arene, aliphatic hydrocarbon, halogenated hydrocarbons, lipid, the diol, derivatives.
5. 1-methylcyclopropene liquid preparation according to claim 3, it is characterized in that: described emulsifier perhaps is the composition of a kind of anion surfactant and one or more non-ionic surface active agents for one or more HLB values are 2～15 non-ionic surface active agent.
6. 1-methylcyclopropene liquid preparation according to claim 3 is characterized in that: described synergist is one or both in azone, thiophene ketone, the organic silicon surfactant.
7. 1-methylcyclopropene liquid preparation according to claim 4 is characterized in that: described organic solvent is dimethylbenzene, benzene, toluene, 1,1,1-trichloroethanes, glycol monoethyl ether, one or more in ethyl acetate, the dimethyl suflfate.
8. 1-methylcyclopropene liquid preparation according to claim 5, it is characterized in that: non-ionic surface active agent is a dibenzyl xenol APEO, styryl phenol APEO, styryl phenol polyoxyethylene (10) ether, calcium dodecyl benzene sulfonate, phenethyl phenol polyoxyethylene poly-oxygen propylene aether, OPEO, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, anion surfactant are alkylbenzenesulfonate, alkylsulfonate, sulphosuccinates, lignosulfonates, polyoxyethylene alkyl ether sulfate salt.
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| EP2392210A1 (en) * | 2010-06-04 | 2011-12-07 | Syngenta Participations AG | Methods for increasing stress tolerance in plants |
| CN107467176A (en) * | 2017-09-12 | 2017-12-15 | 西安交通大学 | Stable spray of a kind of cyclopropene fruit and vegetable fresh-keeping agent and preparation method thereof |
| RU2667518C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Method of processing the harvest of fruits, berries, vegetables and greens before laying for storage |
| RU2667514C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Method of obtaining a preparation for processing fruits and vegetables |
| RU2667511C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Process for the preparation of 1-methylcyclopropene |
| RU2667512C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Method of obtaining a preparation for processing fruits and vegetables |
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| US11248109B2 (en) | 2018-04-27 | 2022-02-15 | Fresh Inset S.A. | Compositions and articles comprising complexes of 1-methylcycloproprene and alpha-cyclodextrin |
| CN115777699A (en) * | 2017-03-31 | 2023-03-14 | 瓦伦特生物科学有限责任公司 | 1-amino-1-cyclopropanecarboxylic acid formulations |
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| EP2392210A1 (en) * | 2010-06-04 | 2011-12-07 | Syngenta Participations AG | Methods for increasing stress tolerance in plants |
| CN103079398A (en) * | 2010-06-04 | 2013-05-01 | 先正达参股股份有限公司 | Plant irrigation methods with 1-MCP |
| JP2013539452A (en) * | 2010-06-04 | 2013-10-24 | シンジェンタ パーティシペーションズ アクチェンゲゼルシャフト | 1-MCP plant irrigation method |
| EP2592923A4 (en) * | 2010-06-04 | 2014-04-16 | Syngenta Participations Ag | Plant irrigation methods with 1-mcp |
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| RU2615442C2 (en) * | 2010-06-04 | 2017-04-04 | Зингента Партисипейшнс Аг | Methods of watering plants with 1-mcp |
| CN106857042A (en) * | 2010-06-04 | 2017-06-20 | 先正达参股股份有限公司 | With the plant irrigation method of 1 MCP |
| US10542747B2 (en) * | 2010-06-04 | 2020-01-28 | Syngenta Participations Ag | Plant irrigation methods with 1-MCP |
| CN115777699A (en) * | 2017-03-31 | 2023-03-14 | 瓦伦特生物科学有限责任公司 | 1-amino-1-cyclopropanecarboxylic acid formulations |
| RU2667511C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Process for the preparation of 1-methylcyclopropene |
| RU2667514C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Method of obtaining a preparation for processing fruits and vegetables |
| RU2667512C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Method of obtaining a preparation for processing fruits and vegetables |
| RU2667518C1 (en) * | 2017-07-19 | 2018-09-21 | Елена Александровна Зиновьева | Method of processing the harvest of fruits, berries, vegetables and greens before laying for storage |
| CN107467176A (en) * | 2017-09-12 | 2017-12-15 | 西安交通大学 | Stable spray of a kind of cyclopropene fruit and vegetable fresh-keeping agent and preparation method thereof |
| US11248109B2 (en) | 2018-04-27 | 2022-02-15 | Fresh Inset S.A. | Compositions and articles comprising complexes of 1-methylcycloproprene and alpha-cyclodextrin |
| CN109007000A (en) * | 2018-08-23 | 2018-12-18 | 中国农业科学院果树研究所 | A kind of preservation method for inhibiting apple brown stain and extending storage time |
| CN110353030A (en) * | 2019-08-27 | 2019-10-22 | 沈阳农业大学 | A kind of fresh-keeping fresh adding method of needle mushroom |
| WO2021156722A1 (en) * | 2020-02-03 | 2021-08-12 | Fresh Inset S.A. | Stable 1-methylcyclopropene compositions and uses thereof |
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| US11730166B2 (en) | 2020-02-03 | 2023-08-22 | Fresh Inset S.A. | Stable 1-methylcyclopropene compositions and uses thereof |
| CN111387275A (en) * | 2020-05-09 | 2020-07-10 | 天津市林业果树研究所 | Fresh-keeping method for fruit and vegetable collection, storage, transportation and sale and application thereof |
| CN113287613A (en) * | 2021-04-30 | 2021-08-24 | 天津天隆在田农业科技有限公司 | Plant growth regulator for enhancing drought resistance of cauliflowers and preparation method and application thereof |
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