EP0808099A1 - Filmbildende zusammensetzung zur umhüllung von samen - Google Patents

Filmbildende zusammensetzung zur umhüllung von samen

Info

Publication number
EP0808099A1
EP0808099A1 EP96903063A EP96903063A EP0808099A1 EP 0808099 A1 EP0808099 A1 EP 0808099A1 EP 96903063 A EP96903063 A EP 96903063A EP 96903063 A EP96903063 A EP 96903063A EP 0808099 A1 EP0808099 A1 EP 0808099A1
Authority
EP
European Patent Office
Prior art keywords
film
seeds
coating
forming composition
amount
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Withdrawn
Application number
EP96903063A
Other languages
English (en)
French (fr)
Inventor
Nathalie Okori
Gérard Trouve
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Original Assignee
Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA filed Critical Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Publication of EP0808099A1 publication Critical patent/EP0808099A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • Film-forming composition intended for coating or film-coating seeds ; process for treating seeds using it and seeds thus treated.
  • the subject of the present invention is new film-forming compositions intended for coating or film-coating seeds in particular with a view to ensuring their protection against their deterioration during aging, in particular during storage.
  • It also relates to a process for treating seeds using this coating or film-coating composition and the seeds thus treated.
  • the main object of the present invention is to remedy these drawbacks by providing a solution capable of being applied easily on an industrial scale.
  • solutions of ascorbate or methionine salts are commonly applied to fruits or to the different leaf stages of plants in order to protect them from damage caused by air pollution.
  • ascorbic acid is used at the time of sowing, either by being incorporated into the germination substrate (filter paper, sand, potting soil) or as a pre-soaking bath for seeds.
  • the present application aims to cover a film-forming composition intended for the coating or the film coating of seeds with a view to ensuring their protection against their deterioration during aging, in particular during storage, characterized in that that it includes, expressed in relation to its dry matter:
  • At least one antioxidant in an amount by weight of between 0.1 and 30%, preferably between 1% and 20%.
  • a coating composition not only makes it possible to improve the germination of the seeds by acting at the time of sowing, but also quite surprisingly ensures the protection of these seeds against deterioration during aging.
  • This composition applies more particularly to the coating which consists in depositing on the surface of the seeds a thin film of biodegradable polymers in which are included various agrochemical substances. The shape and size of the seeds, during this process, are only slightly modified.
  • This composition can also be applied to the coating which consists in modifying the size and the shape of a seed by a significant contribution of inert material. Several phytosanitary substances can thus be located more precisely in the different strata of the pill thus formed.
  • the antioxidant substance (s) responsible for this effect can be distributed uniformly over the seeds and can act on the agents responsible for their deterioration upon their formation, that is to say in particular during the storage and aging of the seeds but also during their germination.
  • the film-forming substance (s) form (s) the main network of the film in which the antioxidant agent (s) is (are) included.
  • a film-forming substance suitable in the context of the present invention generally consists of a polymer allowing the formation of a film permeable to water and gas exchanges, biodegradable and without phytotoxic effect for the plant material.
  • polymer capable of being used for this purpose mention will be made more particularly of cellulose derivatives, in particular cellulose esters or ethers such as, for example, methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, cellulose acetophthalate, cellulose acetate or ethylcellulose; natural polysaccharides such as in particular modified starches, gums such as guar gum, xanthan gum or gum arabic, alginates, chitosans; as well as vinyl or acrylic derivatives.
  • cellulose derivatives in particular cellulose esters or ethers such as, for example, methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, cellulose acetophthalate, cellulose acetate or ethylcellulose
  • natural polysaccharides such
  • antioxidants capable of being used in the context of the present invention, mention will be made more especially of ascorbic acid and its salts (especially calcium and sodium); tocoph ⁇ rols, especially vitamin E; pol y amines, such as, for example, spermine, spermidine, putrescine, agmatine, cadaverine; flavonoids such as quercetin, myricetin, kaempferol, catechin, luteolin; carot ⁇ noids, in particular ⁇ -carotene; phenolic compounds such as, for example, thymol, carvacrol, zingerone, 6-gingerol, hydroxytyrosol, butylhydroxyanisolc, butylhydroxytoluene; amino acids such as arginine, histidine, cysteine, tryptophan, lysine, threonine and methionine or its derivatives such as lauroylmethionine or acetyl DL magnesium methioninate; squalen
  • a preferred antioxidant will be chosen from ascorbic acid and its salts; polyamines and in particular spermine; zinc-based substances and in particular zinc gluconate; as well as their mixtures.
  • the film-forming composition must be aqueous and therefore film-forming polymers and water-soluble antioxidant agents will be chosen, in particular from those mentioned above.
  • a film-forming composition according to the invention also comprises at least one plasticizing substance, in an amount by weight, expressed relative to the dry matter of the composition, of between 0% and 50%, preferably between 5% and 30 %.
  • plasticizing substances make it possible to improve the spreading qualities of the main film, as well as its physical properties.
  • plasticizing substances which may be used for this purpose, mention will be made more particularly of glycol, sorbitol, glycols, and their aliphatic ethers or esters; surfactants, preferably nonionic, in the form of carbohydrate or glycerol esters or ethers, or more or less ethoxylated alcohols and fatty acids.
  • a film-forming composition according to the invention can also comprise one or more additives chosen from dyes and fillers usually used to modify the properties of the coating material and the protection of said material, in an amount by weight. , expressed relative to the dry matter of the composition, of between 0% and 90%, preferably between 5% and 70%.
  • dyes which may be used for this purpose, mention may be made, for example, of the following dyes, in soluble form or in the form of lacquers: methyl violet 2B, cochineal red, orange yellow S, as well as pigments such as for example mica-titanium, titanium dioxide, iron oxide, zinc oxide, magnesium oxide, black 7 or else pigment pastes containing for example red 48, red 112, blue 15, green 7 dispersed in a suitable solvent.
  • opacifying agents such as, for example, talc, mica, cellulose
  • hydrofugants such as for example fatty acids and their derivatives, silicone polymers and wetting agents promoting the spreading of the film-forming composition, and therefore making it possible to improve the coverage and the appearance of the coated seeds.
  • ethoxylated alkylphenols or phosphoric esters of fatty acids can be used as wetting agents.
  • a film-forming composition according to the invention can be either in liquid form with a dry matter content of between 10% and 70%, preferably between 20 and 40%, or even in dry form, that is to say in form of powders or granules, preferably water-dispersible.
  • a film-forming composition can be prepared by known methods widely described in the literature to which those skilled in the art may refer, and in particular to patents FR-A-2,548,675 and US-4,665,648.
  • various active materials such as in particular fungicides, insecticides, herbicides, moUuscids, repellents or growth substances, may be added to the film-forming compositions according to the invention.
  • active ingredients may be added in an amount by weight, expressed relative to the dry matter of the composition, of between 1% and 50%, preferably between 3% and 30%.
  • phytosanitary active ingredient with antioxidants within the film-coating composition may prove to be particularly advantageous insofar as some of these active ingredients are capable of degrading on contact with the soil, releasing oxidized compounds whose toxic effects for the seed are neutralized by antioxidants.
  • the present application aims to cover a process for treating seeds intended in particular to prevent their deterioration during aging, in particular during storage, characterized in that it consists in coating or in coating said seeds, beforehand during their storage, with a film-forming composition incorporating an effective amount of at least one antioxidant agent.
  • the aforementioned coating or lamination of the seeds is carried out either by spray-drying, or by churning.
  • Spray-drying is a known process for coating solid forms dry. It consists here of spraying the moving seeds with an aqueous film-forming composition as described above while a flow of air permanently ensures the drying of the seeds.
  • the churning technique is a process also known for the film-coating or coating of solid forms by the wet method and consists here of agitating the seeds inside a rotary mixer in the presence of a film-forming composition as described above.
  • the film-forming composition is used for the above-mentioned coating treatment in an amount by weight of between 2 and 50 expressed in grams of dry matter per kilogram of seed.
  • the amount of film-forming composition used can be between 100 and 1000 grams of dry matter per kilogram of seed.
  • the present application aims to cover the coated seeds using the film-forming compositions described above, in particular by means of the aforementioned methods.
  • Water 100% supplement Apply for thirty seconds to 100 grams of sunflower seeds, moving in a rotary mixer, 3 grams of a film coating mixture consisting of 0.1 gram of a fungicide (benlate®), one gram of the coating formula and 1.9 grams of distilled water. The seeds are left at room temperature for 24 hours to allow them to dry.
  • a film coating mixture consisting of 0.1 gram of a fungicide (benlate®), one gram of the coating formula and 1.9 grams of distilled water.
  • the seeds are left at room temperature for 24 hours to allow them to dry.
  • a fungal solution containing 0.1 gram of benlate® and 2.9 grams of water is applied to the bare seeds to obtain a control batch.
  • Germination kinetics on filter paper were carried out in order to assess the speed of germination and the vigor of the different batches of coated seeds.
  • Two repetitions of 200 seeds are put to germinate in plastic trays on sheets of filter paper soaked in distilled water. These tanks, covered with a glass plate, are placed in an air-conditioned culture chamber at 15 * C ⁇ 1 * C under a lightning of 150 ⁇ E m ⁇ 2 s -1 with a photoperiod of 8H / 16H (Day / Night ).
  • the germinated seed counts are carried out every 24 hours for seven days.
  • a seed is considered to have germinated when the tip of the radicle has pierced the seed coat by at least one millimeter. From these data, the percentage of seeds that germinated on the second and seventh day are determined respectively.
  • TMG average germination time
  • IV1 vigor index
  • TMG ⁇ ( nxt )
  • n representing the number of seeds having germinated on day tt representing the time elapsed since germination (Days).
  • sunflower seeds described in this example were film-coated with the formulas and according to a film-coating process identical to those described in those described in Example 1.
  • This vigor test commonly used by seed establishments, makes it possible to assess the germination quality of seeds after storage. It measures, in fact, the deterioration of a batch of seeds, caused by its maintenance in conditions of high temperature and humidity. For this purpose, after 48 hours at 42 ° C and saturated humidity, sunflower alkenes, are germinated in germination conditions described in Example 1. The content of malonyldialdehyde (MDA), one of the end products of the degradation of unsaturated lipids, was determined in the embryonic axes and the cotyledons of these seeds.
  • MDA malonyldialdehyde
  • the collected supernatants are filtered and used for the determination of malonyldialdehyde. For this purpose, a determined volume of this supernatant is incubated for 30 minutes at 95 ° C. ⁇ 1 ° C. with a solution of thiobarbituric acid (TBA) at 5% in 20% trichloroacetic acid. The reaction is stopped in ice for five minutes. The products are centrifuged for 10 minutes at 18,000 g.
  • TSA thiobarbituric acid
  • the absorbance due to the schiff base formed between one mole of MDA and two moles of TBA is read with a spectrophotometer at 532 nm, absorbance from which the value due to non-specific absorptions measured at the wavelength of 600 must be subtracted nm.
  • Corn seeds have been coated with formulas based on gum arabic and different concentrations of ascorbic acid.
  • the composition and the coating process of these formulas are those indicated in Example 1.
  • the fungal agent used in this example is thiram®.
  • the germination parameters previously used were determined for this seed according to the experimental protocol described in Example 1.
  • ascorbic acid accelerates germination and increases the vigor of the seedlings, all the more since this molecule is introduced into the film-coating formula at the concentration 0.5%.
  • corn caryopses, treated and dandruff with formulas and according to a procedure identical to those described in Example 5, are also subjected to the same aging conditions.
  • the MDA content of the corn caryopsis embryo is determined.
  • the extracts are centrifuged for 20 minutes at 33,000 g.
  • the supernatant, collected and filtered, is analyzed to determine the content of malonyldialdehyde by following the protocol described above for the sunflower achenes in Example 2.
  • Rapeseed is coated with the method indicated in Example 1.
  • the film coating in its basic formulation does not accelerate germination and does not increase the vigor of rapeseed seeds.
  • the application of a film, containing ascorbic acid in small quantity, on these seeds very sensitive to oxidizing conditions, allows an earlier establishment of germination, and in a much more important way than for achenes of sunflower or caryopsis of aged corn.
  • Laminating formulas are prepared consisting of: Zinc gluconate 0.1% or 10% Hydroxypropylmethylcellulose 12%
  • Example 1 The same experimental protocol as that described in Example 1 was followed for filming rapeseed seeds with these filming formulas. Accelerated aging conditions identical to those described in Example 7 were also applied to these seeds.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
EP96903063A 1995-02-07 1996-02-07 Filmbildende zusammensetzung zur umhüllung von samen Withdrawn EP0808099A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9501374A FR2730131B1 (fr) 1995-02-07 1995-02-07 Composition filmogene destinee a l'enrobage ou au pelliculage de semences ; procede de traitement de semences l'utilisant et semences ainsi traitees
FR9501374 1995-02-07
PCT/FR1996/000200 WO1996024246A1 (fr) 1995-02-07 1996-02-07 Composition filmogene destinee a l'enrobage ou au pelliculage de semences; procede de traitement de semences l'utilisant et semences ainsi traitees

Publications (1)

Publication Number Publication Date
EP0808099A1 true EP0808099A1 (de) 1997-11-26

Family

ID=9475897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96903063A Withdrawn EP0808099A1 (de) 1995-02-07 1996-02-07 Filmbildende zusammensetzung zur umhüllung von samen

Country Status (3)

Country Link
EP (1) EP0808099A1 (de)
FR (1) FR2730131B1 (de)
WO (1) WO1996024246A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107751188A (zh) * 2017-10-25 2018-03-06 湖北旭舟林农科技有限公司 一种山桐子种子的保存方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX265785B (es) * 2004-12-17 2009-04-06 Ct De Investigacion Y Asistenc Composicion acuosa para la proteccion y fortalecimiento de plantas y su metodo de aplicacion.
FR3008847B1 (fr) * 2013-07-24 2015-08-14 Jouffray Drillaud Enrobage pour semence vegetale
CN115581298A (zh) * 2022-06-16 2023-01-10 云南品悦食品有限公司 一种食用鲜花的加工工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178855A (en) * 1961-05-01 1965-04-20 Union Carbide Corp Biological process for protecting plants from atmospheric contaminants
US5143539A (en) * 1991-04-18 1992-09-01 Lovell James B Method and composition for protecting plants against injury from the interaction of an organophosphate insecticide-nematicide and an AHAS inhibiting herbicide
JPH06125611A (ja) * 1992-10-14 1994-05-10 Iseki & Co Ltd コ−ティング種子

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9624246A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107751188A (zh) * 2017-10-25 2018-03-06 湖北旭舟林农科技有限公司 一种山桐子种子的保存方法
CN107751188B (zh) * 2017-10-25 2018-11-30 湖北旭舟林农科技有限公司 一种山桐子种子的保存方法

Also Published As

Publication number Publication date
WO1996024246A1 (fr) 1996-08-15
FR2730131A1 (fr) 1996-08-09
FR2730131B1 (fr) 1997-08-01

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