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US20110301369A1 - Exfoliated clay/surfactant complex for inhibiting microorganisms, viruses or plant pests - Google Patents

Exfoliated clay/surfactant complex for inhibiting microorganisms, viruses or plant pests Download PDF

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Publication number
US20110301369A1
US20110301369A1 US13/007,906 US201113007906A US2011301369A1 US 20110301369 A1 US20110301369 A1 US 20110301369A1 US 201113007906 A US201113007906 A US 201113007906A US 2011301369 A1 US2011301369 A1 US 2011301369A1
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United States
Prior art keywords
surfactant
exfoliated clay
complex
clay
ammonium chloride
Prior art date
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Abandoned
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US13/007,906
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English (en)
Inventor
Jiang-Jen Lin
Ying-Chiao Wang
Pei-Ru Li
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National Taiwan University NTU
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National Taiwan University NTU
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
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Assigned to NATIONAL TAIWAN UNIVERSITY reassignment NATIONAL TAIWAN UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LI, PEI-RU, LIN, JIANG-JEN, WANG, YING-CHIAO
Publication of US20110301369A1 publication Critical patent/US20110301369A1/en
Priority to US13/933,913 priority Critical patent/US9339028B2/en
Abandoned legal-status Critical Current

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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
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
    • 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
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
    • 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
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • 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
    • A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/02—Acyclic compounds
    • 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
    • A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
    • A01N33/02—Amines; Quaternary ammonium compounds
    • A01N33/12—Quaternary ammonium compounds
    • 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
    • A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
    • A01N55/02—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur containing metal atoms
    • 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
    • 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
    • A01N61/00—Biocides, pest repellants or attractants, or plant growth regulators containing substances of unknown or undetermined composition, e.g. substances characterised only by the mode of action

Definitions

  • the present invention relates to an exfoliated clay/surfactant complex, and particularly to an exfoliated clay/surfactant complex for inhibiting microorganisms, viruses or plant pests. Therefore, the present invention is suitable for fields including agriculture, fisheries and soil remediation.
  • Nano silicate platelets achieved by exfoliating clay are also considered due to their high aspect ratio (averagely, 100 ⁇ 100 ⁇ 1 nm3), high surface areas (700 to 800 m 2 /g) and strong charges (ca. 20,000 ions per platelet).
  • the present invention provides a method of applying NSPs to inhibiting microorganisms, viruses or plant pests without aggregation.
  • the object of the present invention is to provide an exfoliated clay/surfactant complex which can effectively inhibit growth of microorganisms, viruses or plant pests without self-aggregation.
  • the weight ratio of the exfoliated clay to surfactant ranges from 99/1 to 1/99, preferably from 99/1 to 50/50, and more preferably from 99/1 to 90/10.
  • the exfoliated clay is preferably inorganic layered clay on the nano scale; and more preferably nanosilicate platelets (NSPs).
  • the surfactant can be a cationic surfactant, nonionic surfactant, anionic surfactant or amphoteric surfactant; preferably the surfactant is a cationic, nonionic surfactant or anionic surfactant; and more preferably a cationic surfactant.
  • the cationic surfactant can be a quaternary ammonium salt of a fatty amine having 12 to 32 carbon atoms or a quaternary ammonium chloride of a fatty amine having 12 to 32 carbon atoms.
  • the nonionic surfactant can be octylphenol polyethoxylate or polyoxyethylene alkyl ether.
  • the cationic surfactant is ammonium chloride of tallow having 12 to 18 carbon atoms or ammonium chloride of hydrogenated tallow, quaternary ammonium salt of octadecyl fatty amine, octadecyl ammonium chloride or alkyl dimethyl benzyl ammonium chloride; and more preferably alkyl dimethyl benzyl ammonium chloride.
  • the nonionic surfactant is polyoxyethylene alkyl ether, polyoxyethylene stearylcetyl ether, sorbitan esters of fatty acids (for example, Span® series of MERCK), Polysorbate (for example, Tween® series of MERCK), alkylphenol ethoxylates, nonylphenol ethoxylates (NPEOs), or fatty alcohol ethoxylates.
  • the surfactant suitable for the present invention is exemplified in ATTACHMENT 1, which shows good effects of inhibiting bacteria or plant pests.
  • the method for producing the exfoliated clay/surfactant complex of the present invention is: mix the exfoliated clay and the surfactant in a solvent for complexing.
  • the exfoliated clay and the surfactant are preferably respectively dissolved in the solvent and then mixed.
  • the solvent is preferably water.
  • the exfoliated clay/surfactant complex of the present invention can be dissolved in a solvent and then mixed with plants, for example, spraying on plants or soil, or mixing in water.
  • the complex can be in water to form a solution having a concentration of about 0.01 to 1 wt %.
  • FIG. 1 shows the procedure of Example 1.
  • FIG. 2 shows the procedure of Example 5.
  • FIG. 3 shows the effects of the NSPs/surfactant complexes of Examples 2, 5 and 8 in inhibiting growth of bacteria.
  • FIG. 4 shows the effects of the NSPs/surfactant complexes with different weight ratios in inhibiting growth of bacteria.
  • ATTACHMENT 1 exemplifies the surfactant suitable for the present invention.
  • ATTACHMENT 2 shows the surfactants and NSPs/surfactant weight ratios of the Examples.
  • ATTACHMENT 3 shows the results of the NSPs/surfactant complexes in inhibiting plant pests.
  • ATTACHMENT 4 compares the results of banana shoots applied with and without the NSPs/surfactant complex of Example 5.
  • ATTACHMENT 5 compares the results of guava applied with and without the NSPs/surfactant complex of Example 5.
  • the materials used in the present invention include:
  • Ablumine 1214 Alkyl dimethyl benzyl ammonium chloride, a kind of ammonium chloride of tallow having 12 to 18 carbon atoms or ammonium chloride of hydrogenated tallow, a cationic surfactant, purchased from Taiwan Surfactant Co.
  • SINOPOL 1830 Polyoxyethylene stearylcetyl ether, a kind of polyoxyethylene alkyl ether, a nonionic surfactant, purchased from SINO-JAPAN CHEMICAL.
  • SDS Sodium dodecyl sulfate, an anionic surfactant.
  • Nanosilicate platelets Referring to the following description or U.S. Pat. No. 7,022,299 B2, No. 7,094,815 B2, or No. 7,125,916 B2, Pub. No. 2005-0239943-A1, or Ser. No. 11/464,495.
  • Na + -MMT Sodium montmorillonite
  • GPC gel permeation chromatography
  • Titration for amine of the AMO indicates 0.4 meq/g for primary amine, 0.56 meq/g for secondary amine, and zero for tertiary amine. Then the AMO (57.5 g) is dissolved in water and mixed with concentrated hydrochloric acid (35 wt %, 36 g) at 80° C. for 30 minutes to acidify the AMO. The acidified AMO is then added into the Na + -MMT dispersion of Step (a). After the mixture is stirred for five hours, a solution of AMO/Clay is prepared.
  • NSP103S nanosilicate platelets
  • the natural or synthetic clay suitable for preparing the NSPs also includes:
  • Bentonite synthetic layered silicate clay, for example, SWN of CO-OP Chemical Co. which has a cationic exchange capacity (CEC) of 0.67 mequiv/g.
  • Synthetic fluorine mica for example, SOMASIF ME-100 of CO-OP Chemical Co. which has a CEC of 1.20 mequiv/g.
  • Laponite synthetic layered silicate clay having a CEC of 0.69 mequiv/g.
  • M II 1-x M III x (OH) 2 intra [A n ⁇ ⁇ nH 2 O] inter : synthetic layered silicate clay, wherein M II indicates the two-valent metal ion, for example, Mg, Ni, Cu, or Zn; M III indicates the three-valent metal ion, for example, Al, Cr, Fe, V, or Ga; A n ⁇ indicates the anion, for example, CO 3 2 ⁇ , NO 3 2 ⁇ ; the anions have an anionic exchange capacity (AEC) from 2.00 to 4.00 mequiv/g.
  • AEC anionic exchange capacity
  • Step (A) and Step (B) the NSPs and the surfactant are preferably diluted to the same concentration so that the effect of modifying NSPs is better.
  • the solution of bacteria incubated overnight is added into a liquid medium of fresh Luria-Bertani (LB) and is continuously incubated for three hours.
  • the volumetric ratio of the solution of bacteria to the liquid medium is 1/100.
  • Absorbance of the incubated solution at OD 600 is measured with a spectrophotometer and the solution having OD 600 ranging from 0.4 to 0.6 is selected for the standard solution.
  • FIG. 3 shows the effects of the NSPs/surfactant complexes of Examples 2, 5 and 8 in inhibiting growth of bacteria.
  • the NSPs/surfactant complexes have a weight ratio of 99/5 and a concentration 0.1 wt %.
  • the results indicate that the complex (NSS1-D-95) of Example 2 including the cationic surfactant performs the best effect when the bacteria are electrically negative.
  • FIG. 4 shows the effects of the NSPs/surfactant complexes with different weight ratios in inhibiting growth of bacteria.
  • the results indicate that the NSPs/surfactant complexes with a weight ratio 50/50 (prepared from Examples 2 and 3, NSS1-D-50) perform better effects than that with a weight ratio 95/5 (Example 2, NSS1-D-95), in a concentration of 0.1 wt %. That is, more cationic surfactant facilitates inhibiting growth of bacteria.
  • NSPs/nonionic surfactant complexes of Examples 4 to 6 are respectively mixed with alcohol in a weight ratio of 1:2.
  • the mixture is diluted to 1,000 times and has a concentration 0.001 wt %.
  • the solutions are sprayed on Terminalia boivinii covered with aphides.
  • ATTACHMENT 3 shows that all the pests died after spraying once and then the trees grew well without pests.
  • ATTACHMENTs 4 and 5 respectively compare the results of banana shoots and guava applied with (B) and without (A) the NSPs/surfactant complex of Example 5.
  • the diluted solutions were 0.001 wt %.
  • the picture (B) of ATTACHMENT 4 shows that the banana shoot sprayed with the solution grew obviously better than that shown in the picture (A).
  • the concentrations and spraying frequencies could influence growing conditions.
  • the picture (B) also shows that the guava sprayed with the solution grew faster, flourished leaves, bloomed and fruited more.
  • the complex could also promote growth of vegetables such as bottle gourd.
  • the dilutions of the exfoliated clay/surfactant complex according to the present invention can balance acidic soil and increase utilization thereof.
  • the exfoliated clay/surfactant complex is similar to a virus in size, has a large specific surface area and adsorption ability, so that viruses, bacteria and pest ova can not proceed with fissiparity or hatch because they are embedded by the complex.
  • exfoliated clay/surfactant complex of the present invention are friendly to the environment and can be further used in other fields, for example, adsorbing pesticides, promoting aquaculture, treating waste water of agriculture or fishing, preserving agricultural products, deodorizing corrals or stalls, killing mosquitoes or flies, and cleaning objects or clothes.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
US13/007,906 2010-06-04 2011-01-17 Exfoliated clay/surfactant complex for inhibiting microorganisms, viruses or plant pests Abandoned US20110301369A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013123176A1 (en) * 2012-02-14 2013-08-22 University Of Florida Research Foundation, Inc. Engineered particulate systems for controlled release of pesticides and repellants
EP2653033A1 (en) * 2012-04-20 2013-10-23 Matera Lda Antimicrobial complexes
US9894896B2 (en) 2015-06-09 2018-02-20 King Saud University Method of using a clay suspension to prevent viral and phytoplasma diseases in plants
US20180092350A1 (en) * 2016-10-03 2018-04-05 University Of Central Florida Research Foundation, Inc. Ternary agrichemical compositions and related methods
CN110973157A (zh) * 2019-11-30 2020-04-10 太湖县华中农业发展有限公司 水产养殖用抗菌消毒液及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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TWI845053B (zh) * 2022-12-07 2024-06-11 中鎮醫療產品科技股份有限公司 多銨基聚氨酯-奈米矽片複合物

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013123176A1 (en) * 2012-02-14 2013-08-22 University Of Florida Research Foundation, Inc. Engineered particulate systems for controlled release of pesticides and repellants
US9936692B2 (en) 2012-02-14 2018-04-10 University Of Florida Research Foundation, Inc. Engineered particulate systems for controlled release of pesticides and repellants
EP2653033A1 (en) * 2012-04-20 2013-10-23 Matera Lda Antimicrobial complexes
WO2013156595A1 (en) * 2012-04-20 2013-10-24 Matera, Lda. Antimicrobial complexes
US9894896B2 (en) 2015-06-09 2018-02-20 King Saud University Method of using a clay suspension to prevent viral and phytoplasma diseases in plants
US20180092350A1 (en) * 2016-10-03 2018-04-05 University Of Central Florida Research Foundation, Inc. Ternary agrichemical compositions and related methods
CN110973157A (zh) * 2019-11-30 2020-04-10 太湖县华中农业发展有限公司 水产养殖用抗菌消毒液及其制备方法

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TWI435695B (zh) 2014-05-01
US20130296270A1 (en) 2013-11-07
US9339028B2 (en) 2016-05-17
TW201143614A (en) 2011-12-16

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