NZ731106B2 - An aldehyde containing composition for insect control - Google Patents
An aldehyde containing composition for insect control Download PDFInfo
- Publication number
- NZ731106B2 NZ731106B2 NZ731106A NZ73110615A NZ731106B2 NZ 731106 B2 NZ731106 B2 NZ 731106B2 NZ 731106 A NZ731106 A NZ 731106A NZ 73110615 A NZ73110615 A NZ 73110615A NZ 731106 B2 NZ731106 B2 NZ 731106B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- solution
- sodium
- insect
- surfactant
- aldehyde
- Prior art date
Links
- 241000238631 Hexapoda Species 0.000 title claims description 60
- 239000000203 mixture Substances 0.000 title abstract description 51
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 title 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims abstract description 22
- GYHFUZHODSMOHU-UHFFFAOYSA-N Nonanal Chemical compound CCCCCCCCC=O GYHFUZHODSMOHU-UHFFFAOYSA-N 0.000 claims abstract description 12
- PCSMJKASWLYICJ-UHFFFAOYSA-N Succinaldehyde Chemical compound O=CCCC=O PCSMJKASWLYICJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- IZALUMVGBVKPJD-UHFFFAOYSA-N benzene-1,3-dicarbaldehyde Chemical compound O=CC1=CC=CC(C=O)=C1 IZALUMVGBVKPJD-UHFFFAOYSA-N 0.000 claims abstract description 9
- HYBBIBNJHNGZAN-UHFFFAOYSA-N Furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims abstract description 7
- UMHJEEQLYBKSAN-UHFFFAOYSA-N hexanedial Chemical compound O=CCCCCC=O UMHJEEQLYBKSAN-UHFFFAOYSA-N 0.000 claims abstract description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M buffer Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 35
- 239000004094 surface-active agent Substances 0.000 claims description 28
- SCVFZCLFOSHCOH-UHFFFAOYSA-M Potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 22
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 13
- 235000017281 sodium acetate Nutrition 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- -1 aldehyde compound Chemical class 0.000 claims description 11
- 235000011056 potassium acetate Nutrition 0.000 claims description 11
- 229940087562 Sodium Acetate Trihydrate Drugs 0.000 claims description 10
- 239000003599 detergent Substances 0.000 claims description 10
- 239000003002 pH adjusting agent Substances 0.000 claims description 10
- AYRVGWHSXIMRAB-UHFFFAOYSA-M sodium acetate trihydrate Chemical compound O.O.O.[Na+].CC([O-])=O AYRVGWHSXIMRAB-UHFFFAOYSA-M 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 150000003856 quaternary ammonium compounds Chemical class 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- LWIHDJKSTIGBAC-UHFFFAOYSA-K Tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- 239000003651 drinking water Substances 0.000 claims description 4
- 239000008188 pellet Substances 0.000 claims description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 3
- 235000011008 sodium phosphates Nutrition 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- SRSXLGNVWSONIS-UHFFFAOYSA-N Benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims description 2
- VSGNNIFQASZAOI-UHFFFAOYSA-L Calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 claims description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- XIXADJRWDQXREU-UHFFFAOYSA-M Lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 claims description 2
- 229940071257 Lithium acetate Drugs 0.000 claims description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K Lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 2
- UEGPKNKPLBYCNK-UHFFFAOYSA-L Magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 claims description 2
- SNQQPOLDUKLAAF-UHFFFAOYSA-N Nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 2
- 229960004109 Potassium Acetate Drugs 0.000 claims description 2
- 229960004063 Propylene glycol Drugs 0.000 claims description 2
- 229960004249 Sodium Acetate Drugs 0.000 claims description 2
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 claims description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L Zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- QVXFGVVYTKZLJN-KHPPLWFESA-N [(Z)-hexadec-7-enyl] acetate Chemical compound CCCCCCCC\C=C/CCCCCCOC(C)=O QVXFGVVYTKZLJN-KHPPLWFESA-N 0.000 claims description 2
- 229940092714 benzenesulfonic acid Drugs 0.000 claims description 2
- 235000012206 bottled water Nutrition 0.000 claims description 2
- 239000001639 calcium acetate Substances 0.000 claims description 2
- 235000011092 calcium acetate Nutrition 0.000 claims description 2
- 229960005147 calcium acetate Drugs 0.000 claims description 2
- IJCCOEGCVILSMZ-UHFFFAOYSA-L copper;dichlorate Chemical compound [Cu+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O IJCCOEGCVILSMZ-UHFFFAOYSA-L 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- MLKHWDKDNHEWFL-UHFFFAOYSA-N dodecyl ethyl sulfate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)OCC MLKHWDKDNHEWFL-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- 150000002338 glycosides Chemical class 0.000 claims description 2
- 229910001386 lithium phosphate Inorganic materials 0.000 claims description 2
- 239000011654 magnesium acetate Substances 0.000 claims description 2
- 235000011285 magnesium acetate Nutrition 0.000 claims description 2
- 229940069446 magnesium acetate Drugs 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims description 2
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 claims description 2
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000001587 sorbitan monostearate Substances 0.000 claims description 2
- 235000011076 sorbitan monostearate Nutrition 0.000 claims description 2
- 229940035048 sorbitan monostearate Drugs 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 2
- 235000019798 tripotassium phosphate Nutrition 0.000 claims description 2
- 239000011686 zinc sulphate Substances 0.000 claims description 2
- 235000009529 zinc sulphate Nutrition 0.000 claims description 2
- RXBXBWBHKPGHIB-UHFFFAOYSA-L zinc;diperchlorate Chemical compound [Zn+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O RXBXBWBHKPGHIB-UHFFFAOYSA-L 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive Effects 0.000 claims 1
- 150000001728 carbonyl compounds Chemical class 0.000 abstract description 23
- 239000000243 solution Substances 0.000 description 68
- 150000001299 aldehydes Chemical class 0.000 description 48
- 235000013601 eggs Nutrition 0.000 description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 38
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- 241000894006 Bacteria Species 0.000 description 14
- WWJZWCUNLNYYAU-UHFFFAOYSA-N Temefos Chemical compound C1=CC(OP(=S)(OC)OC)=CC=C1SC1=CC=C(OP(=S)(OC)OC)C=C1 WWJZWCUNLNYYAU-UHFFFAOYSA-N 0.000 description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
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- 235000017557 sodium bicarbonate Nutrition 0.000 description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 8
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Classifications
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- 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
-
- 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
- A01N25/12—Powders or granules
- A01N25/14—Powders or granules wettable
-
- 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
- A01N25/22—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 ingredients stabilising the active ingredients
-
- 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
- A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
- A01N35/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals
-
- 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
- A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
- A01N35/04—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aldehyde or keto groups, or thio analogues thereof, directly attached to an aromatic ring system, e.g. acetophenone; Derivatives thereof, e.g. acetals
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
- A01N43/08—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with oxygen as the ring hetero atom
-
- 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
- A01N49/00—Biocides, pest repellants or attractants, or plant growth regulators, containing compounds containing the group, wherein m+n>=1, both X together may also mean —Y— or a direct carbon-to-carbon bond, and the carbon atoms marked with an asterisk are not part of any ring system other than that which may be formed by the atoms X, the carbon atoms in square brackets being part of any acyclic or cyclic structure, or the group, wherein A means a carbon atom or Y, n>=0, and not more than one of these carbon atoms being a member of the same ring system, e.g. juvenile insect hormones or mimics thereof
Abstract
This invention relates generally to use of a stable aqueous carbonyl compound selected from nonanaldehyde, furfuraldehyde, succinaldehyde, glutaraldehyde, adipaldehyde, iso-phthalaldehyde, containing solution, or a mixture of different carbonyl compounds containing solutions, in a program of integrated vector management. ted vector management.
Description
AN ALDEHYDE CONTAINING COMPOSITION FOR INSECT CONTROL
[0001A] The reader’s attention is also directed to our related divisional application
New Zealand patent application 768050. This application is the national phase entry
in New Zealand of PCT international application (published as
WO2016/042389), filed 2 October 2015, the full disclosure of which is hereby
incorporated by reference in its entirety.
BACKGROUND OF THE INVENTION
The invention relates to a method of control of insect vectors using a
carbonyl composition.
[0002] Insects are arthropods, characterized in at least the adult having a chitinous
exoskeleton.
Certain insects, for example termites, mosquitoes, ants, lice, fleas or
cockroaches are familial pests or vectors of disease. Notable among these are
mosquitoes that are well known to be vectors of infectious viral and protozoal
diseases such as, for example, Malaria, Yellow Fever, Dengue Fever and West Nile
Virus. Mosquitoes are not the only vectors however. Another example is the black
fly as a vector of River Blindness. A further and topical example are bed bugs and
their demonstrated potential to carry and transmit MRSA and VRE.
To illustrate the extent of the problem of disease and vector control in the
U.S., structural pest control industry generated an estimated $7.213 billion in total
service revenue in 2013, a 6% increase from 2012. Pest control services were
directed, most commonly, to termites, bed bugs and cockroaches.
With respect to bedbugs, in the US, 86.5% of business respondents to a
survey said their company treated for bed bugs. Six of ten respondents primarily
relied on insecticide treatments to control bed bugs. One in five respondents relied
on heat or steam treatments.
[0006] People in single family homes and apartments were the leading users of
pest control services for bed bugs treatment, followed by hotels and motels.
Termite and flying ant swarms vary from year to year depending on climate
conditions. Nevertheless, both pre- and post- construction termite treatment is a
growing business in the US, with nearly half of all privately owned housing
developments in the U.S. receives a pre-construction termite treatment this past
year.
While there are a number of management techniques to address the
resultant human and animal diseases facilitated by insects, such as vaccination and
therapeutics, it is apparent that disease resistance to some of these therapies has
become a significant problem.
Vaccination is problematic in terms of availability, affordability and the
potential for other untoward long-term effects in humans and food-stock animals.
Certain insecticides have been overused which, in some cases, has made
these pesticides less effective due to resistance with resistant insects posing ever
increasing challenge.
Low technology solutions can also be used. These solutions include simply
turning over trapped water in a container and, on a larger more environmentally
damaging scale, to large-scale draining of marsh water levels.
Lavicides, as a class of insecticide, interrupt the lifecycle of a particular
insect at an immature stage of the cycle the larvae can mature into an adult and
disperse to broader territory.
Larviciding can reduce overall pesticide usage in a control program. Killing,
for example, mosquito larvae before they emerge as adults, can reduce or eliminate
the need for ground or aerial application of pesticides to kill adult, for example,
mosquitoes.
A combination of chemical measures (use of lavicides) and biological
measures may be employed to kill insects at the larval stages, but many of these
measures are potentially harmful to the environment. Therefore, there is an on-going
need for environmentally safe yet effective larvicides.
[0015] The ideal larvidicide would have the following properties: effectiveness at low
doses, rapid kill, effectiveness against all immature insect stages, species specificity,
lack of effect on non-target species, environmentally friendly, low mammalian
toxicity, no cross resistance to existing active ingredients, ease of formulation, long
shelf-life, potential for residual activity yet no bioaccumulation, the ability to self-
spread, and uniformity within a water column.
Some examples of larvicides include:
(a) broad-spectrum insecticides - the organo-phosphates temephos, chlorpyrifos,
fenthion, pirimiphos-methyl, and the tetracyclic macrolide neurotoxin spinosad;
(b) bacterial larvicides - Bacillus thuringiensis var israelensis), and Bacillus
sphaericus;
(c) insect growth regulators - s-methoprene, pyriproxyfen, diflubenzuron, and
novaluron; and
(d) monomolecular surface films - isostearyl alcohols, mineral oils.
Among the organophosphate pesticides, temephos (known under the
trademark Abate) was registered by US EPA in 1965 to control mosquito larvae, and
it is the only organophosphate with larvicidal use. Temephos is an important
resistance management tool for mosquito control programs by preventing
mosquitoes from developing resistance to the bacterial larvicides.
Temephos is used in areas of standing water, shallow ponds, swamps,
marshes, and intertidal zones and may be used along with other mosquito control
measures in an integrated vector control (IVC) program. Temephos is applied most
commonly by helicopter but can be applied by backpack sprayers, fixed-wing aircraft,
and right-of-way sprayers in either liquid or granular form.
Temephos, applied according to label instructions for mosquito control, has
no unreasonable risk to human health. It is applied to water, and the amount of
temephos used in relation to the area covered is very small. Temephos breaks down
within a few days in water, and post-application exposure is minimal. However, at
high dosages, temephos, like other organophosphates, can over-stimulate the
nervous system causing nausea, dizziness, and confusion.
Because temephos is applied directly to water, it is not expected to have a
direct impact on terrestrial animals or birds. However, application of temephos does
pose some risk to non-target aquatic species and the aquatic ecosystem. Although
temephos presents relatively low risk to birds and terrestrial species, available
information suggests that it is more toxic to aquatic invertebrates than alternative
larvicides. For this reason, its use is limited to areas where less-hazardous
alternatives would not be effective. In this case risk mitigation includes limiting the
use of high application rates by specifying intervals between applications.
Spinosad is a newer biological insecticide. Spinosa is a mixture of two types
of tetracyclic macrolide neurotoxin spinosyn. Spinasyn is produced during the
fermentation of the soil actinomycete Saccharopolyspora spinosa. Spinosad
effective against insect larva, and does not exhibit cross-resistance with existing
insecticides. Spinosad has been shown to have a more favourable toxicological
profile than temephos.
Natural larvicides, such as predatory fish, or bacterial insecticides such as
bacillus thuringiensis israelensis and bacillus sphaericus, can be used as an
effective solution for mosquito control. However their use is not always practical or
suited to the habitat used by insects for the immature stages of their lifecycle. And, in
the case of microbial larvicides, which have no residual efficacy, the costs of weekly
applications should be considered in relation to the reduction in disease transmission
intensity. The efficacy of bacterial larvicides is also dependent on both water
temperature and larvae densities.
Bacillus thuringiensis israelensis is a naturally occurring soil bacteria that
produces four types of toxic spores. The spores are eaten by mosquito larvae, but
not by pupae or emerging insects. This solution is highly specific, and has a low
order of toxicity.
Bacillus sphaericus is also a naturally occurring soil bacteria that is effective
against Culex mosquitoes and some Annopheles and Aedes species. Bacillus
sphaericus is beneficial in situations where there is high organic pollution.
[0025] Methoprene is a compound first registered by EPA in 1975 which mimics the
action of an insect growth-regulating hormone and prevents the normal maturation of
insect larvae. Methoprene is applied to water to kill mosquito larvae. It can be used
along with other mosquito control measures in an IVC program. The methoprene
product used in mosquito control is known as Altosid, and it is applied as briquettes,
pellets, sand granules, and liquids. The liquid and pelletized formulations can be
applied by helicopter and fixed-wing aircraft.
Methoprene used in mosquito control programs does not pose unreasonable
risks to wildlife or the environment. When used for mosquito control according to its
label directions, does not pose unreasonable risks to human health. Toxicity of
methoprene to birds and fish is low, and it is nontoxic to bees. Methoprene breaks
down quickly in water and soil and will not leach into ground water. Methoprene
mosquito control products present minimal acute and chronic risk to freshwater fish,
freshwater invertebrates, and estuarine species.
Oils are used as a pesticide by forming a coating on top of water to drown
larvae, pupae, and emerging adult mosquitoes. These oils are specially derived from
petroleum distillates and have been used for many years in the United States to kill
aphids on crops and orchard trees, and to control mosquitoes. They may be used
along with other mosquito control measures in an IVC program. Examples of oils
used in mosquito control are (as knowing by trade names) Bonide, BVA2, and
Golden Bear-1111, (GB-1111).
Oils, used according to label directions for larva and pupa control, do not
pose a risk to human health. In addition to low toxicity, there is little opportunity for
human exposure, since the material is applied directly to ditches, ponds, marshes, or
flooded areas that are not drinking water sources. However, oils, if misapplied, may
be toxic to fish and other aquatic organisms. For that reason, the US EPA has
established specific precautions on the label to reduce such risks.
Monomolecular films are low-toxicity pesticides that spread a thin film on the
surface of the water that makes it difficult for mosquito larvae, pupae, and emerging
adults to attach to the water's surface. These chemicals cause a ‘wetting’ effect on
the tracheal structures of the insect and ultimately the failure of the mosquitoes
natural respiratory system causing them to drown. Films may remain active typically
for 10-14 days on standing water, and have been used in the United States in
floodwaters, brackish waters, and ponds. The effect is not immediate. They may be
used along with other mosquito control measures in IVC program. Examples of
these films, as known by the trade names, are Arosurf MSF and Agnique MMF.
Monomolecular films, used according to label directions for larva and pupa
control, do not pose a risk to human health. In addition to low toxicity, there is little
opportunity for human exposure, since the material is applied directly to ditches,
ponds, marshes, or flooded areas that are not drinking water sources for humans.
[0031] Monomolecular films, used according to label directions for larva and pupa
control, pose minimal risks to the environment. They do not last very long in the
environment, and are usually applied only to standing water, such as roadside
ditches, woodland pools, or containers which contain few non-target organisms.
The disadvantage with the use of oils and films is that they affect other life
forms in the water body, and they are generally not biodegradable.
It is an objective of the invention at least to partially address the
aforementioned problems; and/ or to at least provide the public with a useful choice.
SUMMARY OF INVENTION
[0033A] In a first aspect, the invention relates to a method of insect control
comprising the step of applying, to an environment containing an immature form of
the insect, a stable aqueous carbonyl compound containing solution, the solution
including:
a) at least one aldehyde compound selected from the following:
nonanaldehyde, furfuraldehyde, succinaldehyde, glutaraldehyde,
adipaldehyde, and iso-phthalaldehyde present in the solution in a
concentration range of 0.001% to 2% m/v;
b) a surfactant or detergent;
c) a pH modifier; and
d) a buffer.
DESCRIPTION OF THE INVENTION
[0034] This description relates generally to use of a stable aqueous carbonyl
compound containing solution, or a mixture of different carbonyl compounds
containing solutions, in a program of integrated vector management.
Hereinafter, “a carbonyl compound” refers to an organic compound
containing at least one carbonyl functional group.
[0036] Hereinafter, "stable", in the context of the description, refers to an aqueous
solution capable of being stored for a period of at least 12 months without the pH
dropping below 5 or the molecules polymerizing thereby causing the product to
become biocidally ineffective.
Hereinafter, reference to the term “an immature form of an insect” means at
least one of the following insect lifecycle stages: egg, larvae, nymph and pupae.
Hereinafter, reference to “insect control” or “controlling insects” refers to the
ability to maintain insect populations to a level that will reduce or prevent that insect
population from being a nuisance or transmitting a particular disease.
Hereinafter, reference to “complex” refers to a process whereby the relevant
reactants chemically interact or bond and the interaction includes micellization, i.e.
the creation of micelles.
[0039A] The term “comprising” as used in this specification and claims means
“consisting at least in part of”. When interpreting statements in this specification, and
claims which include the term “comprising”, it is to be understood that other features
that are additional to the features prefaced by this term in each statement or claim
may also be present. Related terms such as “comprise” and “comprised” are to be
interpreted in similar manner.
Compounds, chemical moieties or groups described in conjunction with a
particular embodiment or example of the description are to be understood to be
applicable to any other embodiment or example described herein unless
incompatible therewith.
An embodiment of the description includes, a method of insect control by
reducing the surface tension of a body of water containing the egg stage of the
insect, the method including the step of applying a stable aqueous carbonyl
compound containing solution to the surface of the body of water, wherein the
solution includes:
a) at least one carbonyl compound;
b) a surfactant or detergent;
c) a pH modifier; and
d) a buffer.
[0042] The solution may be prepared, prior to application, by:
(a) adding the surfactant to a volume of water, heated to between 30°C and
70°C;
(b) adding the pH modifier to adjust the pH of the solution to within 6.0 to 8.5
(c) adding at least one carbonyl compound to the body of water, to allow the
carbonyl compound and the surfactant to complex, whilst maintaining the
temperature within the range 30°C and 70°C, for at least 10 minutes;
(d) reducing the temperature of the body of water to below 30°C to slow further
complexation of the carbonyl compound with the surfactant; and
(e) adding the buffer to the solution to buffer the pH and to produce the stable
aqueous carbonyl compound containing solution.
The carbonyl compound may be at least one of the following: an aldehyde, a
ketone, a terpenoid and a lactone.
Described is a method of insect control comprising the step of applying, to an
environment containing an immature form of the insect, a stable aqueous carbonyl
compound containing solution, the solution including:
a) at least one carbonyl compound.
b) a surfactant or detergent;
c) a pH modifier; and
d) a buffer.
The carbonyl compound may be at least one of the following: an aldehyde, a
ketone, a terpenoid and a lactone.
The solution may be applied to the environment by spraying a dispersant.
The dispersant may be a diluted form of the stable aqueous carbonyl solution,
diluted either with distilled or potable water, an alcohol or a solvent. dispersant may
have greater biocidal efficacy at lower temperatures than the stable aqueous
carbonyl solution in an undiluted state
Alternatively, or additionally, the solution or the dispersant may be
administered in the form of a spray, a fog, a foam or mist.
[0049] If the environment is a body of water, the solution may be applied as fast
dissolving or disintegrating granules or pellets. The granules may be, for example,
compressed peat granules or pellet.
The method includes the step of producing a foam of the solution, prior to
application.
[0051] An embodiment of the description includes an insecticidal composition which
includes:
a) at least one carbonyl compound;
b) a surfactant or detergent;
c) a pH modifier; and
d) a buffer.
The carbonyl compound may be at least one of the following: an aldehyde, a
ketone, a terpenoid and a lactone.
An embodiment of the description includes use of a stable aqueous aldehyde
solution for the control of insects, the solution including:
a) at least one carbonyl compound
b) a surfactant or detergent;
c) a pH modifier; and
d) a buffer.
The carbonyl compound may be at least one of the following: an aldehyde, a
ketone, a terpenoid and a lactone.
In respect of each embodiment of the description, the following may be
present in the solution in the following concentration ranges:
a) the carbonyl compound – 0.001% to 45% m/v;
b) the surfactant or detergent – 0.1% to 45% m/v; and
c) the buffer – 0.05% to 25% m/v.
The surfactant or detergent may be chosen from one or more of the following:
an alcohol ethoxylate surfactant, a nonylphenol surfactant, an alkyl glycoside,
sulphonic acid, sodium lauryl ethyl sulphate, sodium lauryl sulphate, a twin chain
quaternary ammonium compound, cocopropyldiamide (CPAD), alkyl sulphate esters,
benzenesulfonic acid, C10alkyl derivatives and their sodium salts, D-
glucopyranose, oligomeric glycosides and sorbitan monostearate.
Preferably, the surfactant or detergent may be one or more of the following:
an alcohol ethoxylate surfactant, either linear or branched; a glucose-based
carbohydrate derivative, for example a alkylpolyglucoside, a glucamide or a
glucamine oxide; a surfactant blend of alternative nonionics or a blend that includes
anionic or amphoteric surfactants such as, for example, sodium lauryl sulphate, or a
sorbitan ester, ethanol and propanol.
The alcohol ethoxylate surfactant may include 3 to 12 ethoxylate groups
depending on the composition of the stable aqueous carbonyl solution and the
foaming properties required for a specific application of the stable aqueous carbonyl
solution.
In respect of each embodiment of the description, the buffer may include at
least one of the following: calcium acetate, magnesium acetate, sodium acetate,
sodium acetate tri-hydrate, potassium acetate, lithium acetate, propylene glycol,
hexalene glycol, sodium phosphate, sodium tri-phosphate, potassium phosphate,
lithium phosphate, zinc perchlorate, zinc sulphate, cupric chlorate and cupric
sulphate.
Preferably, the buffer may be a buffer mixture which includes at least sodium
acetate trihydrate and potassium acetate.
Sodium acetate trihydrate and potassium acetate may each have a
concentration in the buffer mixture of between 0.250 and 1.5 grams/litre.
In respect of each embodiment of the description, wherein, when the at least
one carbonyl compound is an aldehyde, the aldehyde may be one or more of the
following: formaldehyde, acetaldehyde, glyceraldehyde, proprionaldehyde,
butraldehyde, pentanaldehyde, methyl pentanaldehyde, ethyl pentanaldehyde, tiglic
aldehyde, valeraldehyde, iso-valeraldehyde, hexanaldehyde, heptanaldehyde,
octanaldehyde, nonanaldehyde, 2-ethyl hexaldehyde, decanaldehyde,
undecanaldehyde, dodecyl aldehyde, cuminaldehyde, benzaldehyde, iso-
valeraldehyde, chloraldehyde hydrate, furfuraldehyde, paraformaldehyde, ethane
dialdehyde, glyoxal, succinaldehyde, glutaraldehyde, adipaldehyde, iso-
phthalaldehyde, ortho-phthalaldehyde, cinnamaldehyde, salicylaldehyde and
malonaldehyde.
The terpenoid may be citral and ketone may be acetone.
The solution may include more than one type of carbonyl compound. The
solution may include a mixture of aldehyde, ketone, terpenoid and lactones.
[0065] Alternatively, the solution may include a mixture of one or more aldehydes, for
example: glutaraldehyde and ethane dialdehyde; ethane dialdehyde and
chloradehyde trihydrate; acetaldehyde and ethane dialdehyde; paraformaldehyde
and glutaraldehyde; glutaraldehyde and succinaldehyde; glutaraldehyde and
adipaldehyde and ethane dialdehyde and succinaldehyde.
[0066] In respect of each embodiment of the description, the pH modifier may be any
one or more of the following: potassium hydroxide, sodium hydroxide, sodium
phosphate and sodium bicarbonate.
Preferably, the pH modifier is potassium hydroxide in a one molar solution.
A twin chain quaternary ammonium compound, with sterically hindered
ammonium groups, may be added to the stable aqueous aldehyde solution for its
fungicidal and foaming properties.
[0069] In respect of each embodiment of the description, the solution may include an
insect attractant, such as acetone.
In respect of each embodiment of the description, the solution may include an
adjuvant, which aids in the application, or improves the effectiveness, of the solution.
The adjuvant may be a wetting agent, a dispersant or spreading agent, an emulsifier,
a dispensing agent, a foaming adjuvant, a foam suppressant, a penetrant, a
thickener, an anti-freeze agent, a disinfectant and a carrier.
The adjuvant may be a complementary or symbiotic insecticide such as, for
example, a pyrethrin.
In respect of each embodiment of the description, the solution may include an
insect attractant, for example a ketone based attractant.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described with reference to the following drawings in which:
Figures 1, 2 and 3 are photographs under microscope, of bed bug eggs, taken
before and 24 hours after the application of a insecticidal composition in accordance
with the description; and
Figure 4 is a photograph of a petri dish in which is placed in filter paper soaked with
an insecticidal composition in accordance with the description and onto which is
placed instar nymphs.
DESCRIPTION OF PREFERRED EMBODIMENT
[0074] The biocidal efficacy of aldehydes resides in the aldehyde functional group.
This functional group reacts with free amine groups of, for example, a cell membrane
of an organism. Aldehydes have biocidal efficacy as they disrupt cellular process
within target cells which ultimately kills the organism. However, prior to the
invention, it was not known to use aldehydes, and in particular stabilized aldehydes,
to control insects as the vectors of disease.
Without buffering and stabilizing, aldehydes (with the exception of
formaldehyde and aldehydes with carbon chain lengths of 2 to 4 carbon atoms) have
a tendency, especially at low concentrations, to adopt a cyclic molecular
configuration, which results in the aldehyde molecule losing its biocidal efficacy and,
at relatively higher concentrations over a period of time, aldehyde solutions tend to
polymerize with other aldehyde molecules. Polymerization accelerates at
temperatures greater than 50°C (and at less than 4°C for aldehydes that have chain
lengths of less than 5 carbon atoms). Polymerization of aldehydes also results in a
loss of biocidal effect. To overcome the problem of polymerization, it is known to
dilute a product containing an aldehyde solution prior to use.
Raising the pH of an aldehyde solution activates the solution, which increases
the reactivity of the aldehyde functional groups with amine groups and the
associated biocidal effect upon cell membranes. The stability of the aldehyde
solution, however, is compromised when the pH is raised. Higher pH aldehyde
solutions are only stable for a matter of days.
With these inherent drawbacks in mind, the descriptiono relates to the
development of a novel array of biodegradable, insecticides and larvicides, and to
methods of use of same, that are highly effective in their ability to kill eggs, larvae,
nymphs, and pupae of many insect species, before developmental metamorphosis to
an adult insect. The incidence and prevalence of diseases borne by insects can
therefore be reduced due to the reduction of insect concentration and inherent
transmission rates.
[0078] The insects that may be controlled in accordance with one or more aspects of
the invention, include both flying and terrestrial insects, such as: ants, aphids, bed
bugs, cicadas, cockroaches, fleas, flies, lice, mites, mosquitoes, moths, stink bugs,
silverfishes and termites.
The diseases that can be indirectly controlled as a result of using relevant
aspects of the invention as part of a IVC program include: Yellow Fever, Malaria,
Dengue Fever, West Nile Virus, Eastern and Western Equine Encephalitis, Dog
Heartworm and Myiasis.
However, to illustrate the full potential for the invention, a vector table is
provided below which highlights a possible range of diseases that potentially can be
controlled with the use of an insecticidal composition or a method of insect control in
accordance with the invention.
VECTOR DISEASE PATHOGEN TYPE
Mosquitoes Filariasis Helminthes
Malaria Protozoa
Derigue fever Virus
Yellow fever Virus
St Louis enceptialites Virus
Eastern equine enceptialites Virus
Wesern enquine encepphatis Virus
West nile Virus
River valley fever Virus
Ticks Lyme disease Bacteria
Rocky mountain spotted fever Bacteria
Q fever Bacteria
Tularemia Bacteria
Relapsing fever Bacteria
Ehilichiosis Bacteria
Colorado tick fever Virus
Crimean haemorrhagic fever Virus
Babesious Protozoa
Mites Q fever Bacteria
Rickeftsioses Bacteria
Deer flies Tularemia Bacteria
Tsetse flies Sleeping sickness (African Protozoa
Trpanosonias
Blackflies Orichoceriasis Helminthes
Muscoid flies Yaws Bacteria
Sandflies Leishmanasis Protozoa
Sanfly fever Virus
Vesicular stomatitis Virus
Lice Epidemic typhus Bacteria
Trench fever Bacteria
Fleas Endemic typhus Bacteria
Bubonicplague Bacteria
Reduvids (also known as bed Chagas disease Protozoa
bugs, kissing bugs, cone- (American terypanosomiasis)
nose bugs)
Table 1
The insecticidal composition of the description is shown to be highly effective
at controlling insects by disrupting one or more of the immature forms of the insect.
The insecticidal composition controls insect infestation at these stages of
development, without adversely impacting the environment; as the components of
the compositions are readily biodegradable, non-caustic and non-corrosive.
It is thought that the insecticidal composition of the description works in
controlling insect infestation by:
a) the fixation and reduction of proteins and other nitrogen sources in or on the
surface of insect eggs, larvae, nymphs and pupae (immature stages of an
insect) that come in contact with the stabilized active carbonyl solution of the
composition, and
b) in the case of insects laying their eggs on a water surface, the disruption of
the surface tension of the water surface and the resultant destabilization and
breaking apart of the floating “egg boat”.
With regards to this latter hypothesis, it is thought that the stable aqueous
carbonyl solution, when produced by the method of preparation described below,
disrupts the formation and integrity of the floating ’egg boat’. Once the integrity is
broken, then the cytoplasm of the eggs, and the emerging larvae and pupae, are
fixed by the reducing carbonyl functional group. The pathogens hosted by these
insects are also fixed. The result is death of the insect at its immature state and its
hosted pathogen. The lifecycle is therefore interrupted, and there is a reduction in
the concentration of viable vector insects, for example, mosquitoes. By reducing the
concentration of viable insect vectors in an area, the incidence of new pathogenic
infections is reduced as is the overall prevalence of the disease.
The stable aqueous carbonyl solution, according to the description, is
manufactured, in a concentrate solution preferably with the use of an aldehyde. The
concentrate solution is, by definition, a solution in which the aldehyde concentration
is in the range 2% to 20% m/v.
[0085] In participation a non-ionic surfactant, i.e. alcohol ethoxylate (of either 3, 5, 7
or 9 ethoxylate groups), is added to a predetermined volume of water. The mixture
is heated to a temperature between 40° and 50°C followed by an aldehyde or a
mixture of aldehydes. Without limitation, single aldehydes from the following list
were selected and stabilized using the methodology that follows to perform an array
of tests that follow: glutaraldehyde, furfuraldehyde, nonanaldehyde, glyoxyl,
succinaldehyde, or ortho-phthalaldehyde, iso-phthalaldehyde and adipaldehyde.
Also, a carbonyl, being the terpenoid citral, was selected.
[0086] The selected aldehyde, lactone, ketone or terpenoid (hereinafter simply
referred to as “aldehyde”) is allowed to complex with the chosen alcohol ethoxylate
for a period of between 15 and 30 minutes whilst maintaining the temperature of the
volume of water between 30ºC and 70ºC. The result is an aldehyde-surfactant
solution is produced. During this period of heating the aldehyde complexes with the
alcohol ethoxylate substantially to completion.
Following this period, a further amount of water, at a temperature of less
than 25°C, is added to the aldehyde-surfactant complex solution to reduce the
temperature of the solution to below 30°C thereby to slow and stop the complexing
reaction of the alcohol ethoxylate with the aldehyde.
[0088] A pH modifier, such as potassium hydroxide, is then added in a sufficient
quantity to adjust the pH of the aldehyde-surfactant complex solution to within 7.0 to
8.5. Potassium hydroxide is used in a one molar solution.
Finally a buffer mixture, preferably comprising sodium acetate, trihydrate and
potassium acetate is added to the aldehyde-surfactant complex solution to produce a
stable aqueous aldehyde solution in the concentrate solution. In Example 1 that
follows, a buffer mixture of potassium acetate and sodium bicarbotrate is, however,
used.
Sodium acetate trihydrate and potassium acetate each have a concentration
in the buffer mixture of between 0.250 to 1.5 grams/liter. This concentrated solution
is diluted when added to the aldehyde-surfactant complex solution to within a range
0.005% to 0.1% m/v.
It is thought that this method produces, in complexation, micelles of the
aldehyde and surfactant in the aqueous solution.
[0092] As an insecticidal or larvacidal composition (hereinafter “insecticidal” and
“larvacidal” are used interchangeably), the description includes a method of
preventing the hatching of insect eggs or killing of insect larvae, pupae or nymphs,
by contact with a stable aqueous aldehyde solution of the composition.
The use of the insecticidal composition of the description when added as a
concentrate to a crop irrigation system, would address plant pathogens derived from,
for example, spider mites, weevils, beetles and psyllids. In another application, the
composition is useful in the treatment of laundry, mattresses and bedding to help
eradicate nuisance insect infestations of bed bugs, fleas, mites and lice.
Further use of the insecticidal composition of the description are in pre- and
post-construction of homes and structures where subsequent possible invasions of
ants, termites, bedbugs and other insects may be addressed and controlled at
source i.e. at the nests of eggs. Application, in this use, can be in the form of a foam
of the insecticidal composition.
The insecticidal composition also can be applied by ground spraying, aerial
spraying, or by hand or mechanical dispersion, including but not limited to backpack
or other hand held devices, hydraulic or air nozzles, granular applicators,
electrostatic applicators, controlled droplet applicators (CDA), or ultra-low volume
(ULV) applicators. Method of application will, of course, depend on the particular
context. The composition is also suitable for application by low pressure spraying so
that large areas including water or wetlands can be easily treated.
The composition can be applied in single or repeated applications until the
target insect infestation is effectively inhibited. The conditions leading to effective
insect inhibition depend, in part, on the environment. In some instances, a single
application of the composition is sufficient, in another, a plurality of applications may
be required. This is often dependent on climatic conditions.
In the examples that follow, various test protocols were followed in the
application of the insecticidal composition in accordance with the description to
mosquitos and bedbugs. These two insect vectors were chosen due to the many
diseases associated with, and topical issues surrounding, these particular insects.
The choice is not intended to be limiting.
In the case of the bed bug tests, eggs were chosen as the immature stage of
this particular insect, to set a high benchmark in insecticidal efficacy of the
insecticidal composition as the eggs are known to be very difficult to kill due to their
mineralized surface covering.
In the mosquito directed tests (Examples 1 and 2 in particular), the count of
viable larvae and pupae in a liquid sample is used as a surrogate for the relative
incidence of pathogenic disease in an area. In the case of Example 1, due to the
choice of the mosquito species, the pathogenic disease is viral e.g. yellow fever. In
the case of Example 2, again due to the choice of species, the disease is protozoal
e.g. Malaria.
In these tests laboratory assays were carried out with a colony of insectary-
reared larvae originally derived from wild-caught mosquitoes maintained at the South
African Bureau of Standards (“SABS”). Larvae were fed by adding a pinch of
crushed Tetramin (Tetra, Germany) fish food spread evenly on the water surface
twice daily.
Assays were performed to determine the minimum effective dosages of a
20% concentration stable aqueous aldehyde solution. Four groups of fifteen larvae
each were selected for testing. The concentrate solution was diluted to five different
test concentration, one dilution for each experiment. Each experiment was run in four
concurrent replicates at the same time. Larvae were fed during the experiments and
all tests were run at ambient temperature ranging between 21°C and 34°C. After a
24 hour period larvae were counted and mortality scored.
A number of stable aqueous aldehyde solutions, differing in the aldehyde
of choice, were studied for their relative efficacy by taking them through the same
test or protocol described above. A representative of each of the following types of
low molecular weight aldehydes (<12 carbons) was studied in this manner: a mono-
aldehyde, a dialdehyde, a straight chain aldehyde, a branched chain aldehyde, a
cyclic aldehyde, a halogen containing aldehyde and a water insoluble aldehyde.
Other components, notably a biodegradable twin chain quaternary
ammonium compound and the surfactant, were also studied in isolation to
understand their relative contribution to the insecticidal / larvicidal effect.
EXAMPLE 1
This test was conducted to determine the biological efficacy of a sample
(marked “20% Aqua Cure”) against Aedes aegypti and Anopheles arabiensis
mosquito larvae. Aqua Cure is a trade name for a composition of glutaraldehyde, a
tergitol 15S9 surfactant, a polymer (polyvinyl pyrrolidone (“PVPK”)), a potassium
acetate and sodium bicarbonate buffer and Arquad®. Aqua Cure is manufactured in
accordance with the description.
The test was performed in the SABS laboratories. The first exposures
commenced on Aedes aegypti last instar larvae. Fifteen larvae were used per
container (replicate). Four replicates were used for each of the three concentrations
used. They were diluted, 1:10 and 1:100. Deionized water was used as diluent and
where this was used the larvae were placed in the water before the sample was
added. A separate set of four containers with larvae in deionized water only served
as untreated controls. The larvae were supplied with laboratory diet as food.
Mortality counts were made the next day.
A second set of exposures on Aedes larvae commenced the next day
using dilutions of 1:500, 1:1000 and 1:2000 in the same manner as the first. Using
the dilutions above, exposures were also carried out with 30 Anopheles arabiensis
larvae per replicate.
The results are tabulated below:
MORTALITY COUNT
MOSQUITO DILUTION REPLICATESOUT OF 15
TOTAL OUT
OF 60
1 2 3 4
0 15 15 15 15 60
1:10 15 15 15 15 60
Aedes
1:100 15 15 15 15 60
Aegypti
(Yellow
1:500 15 15 15 15 60
Fever)
1:1000 15 15 15 15 60
1:2000 15 15 15 15 60
OUT OF 30 OUT OF 120
1:500 30 30 30 30 120
Anopholos
Aerobionsis 1:1000 30 30 30 30 120
(Malaria) 1:2000 30 30 30 30 120
NOTE: All the untreated control larvae were alive after the exposure period.
Table 2
EXAMPLE 2
This test was conducted to determine the biocidal efficacy of each of the
samples listed below against Aedes aegypti larvae.
Samples Tested:
1. Original Product #1012 30/11/08 aged 6 month coded “1” (glutaraldehyde
+ PVPK + sodium acetate trihydrate + sodium bicarbonate);
2. 2-furfuraldehyde 10% complexed 16/3/9 coded “2” (furfuraldehyde +
Tergitol 15S9 + sodium acetate trihydrate + sodium bicarbonate);
3. N-Nonanal complexed 16/3/9 coded “3” (nonanaldehyde + Tergitol 15S9
+ sodium acetate trihydrate + sodium bicarbonate);
4. Glyoxyl complex 16/3/9 coded “4” (glyoxyl + Tergitol 15S9 + sodium
acetate trihydrate + sodium bicarbonate);
5. Arquad® Q.A.L 4001094749 coded “5” (twin chain quaternary ammonium
compound);
6. GK 10 BB 1060 coded “6” (glutaraldehyde + Tergitol 15S9 + potassium
acetate + sodium bicarbonate);
7. 20% Aqua Cure (glutaraldehyde + PVPK + Arquad® + Tergitol 15S9 +
potassium acetate + sodium bicarbonate).
Each of the samples subjected to this test were manufactured in
accordance with the methodology described above.
The test was performed in the SABS laboratories. The exposure
commenced on last instar larvae. Fifteen larvae were placed in each of 60 plastic
containers (each a “replicate”) filled with 500mg deionized water. The contents of
the sample containers were shaken prior to adding the correct volume to the
containers with deionized water and larvae to obtain dilutions of 1:2000 and 1:4000
respectively. Four replicates were used for each treatment. The remaining four
containers with larvae served as untreated controls. The larvae were supplied with
laboratory diet as food. Morality counts were made after 48 hours.
MORTALITY COUNT
SAMPLE
DILUTION REPLICATESOUT OF 15
OR CODE
TOTAL OUT
OF 60
1 2 3 4
1:2000 15 15 15 15 60
1:4000 15 15 15 13 58
1:2000 12 9 7 6 34
1:4000 0 1 0 0 1
1:2000 14 10 12 15 51
1:4000 2 1 2 0 5
1:2000 0 0 0 0 0
1:4000 0 0 0 0 0
1:2000 15 15 15 15 60
1:4000 15 15 15 15 60
1:2000 0 0 0 0 0
1:4000 0 0 0 0 0
1:2000 15 15 15 15 60
1:4000 15 15 15 15 60
Table 3
EXAMPLE 3
All the untreated control larvae were alive after the exposure period.
[00113] This test was conducted to determine the biological efficacy of the samples
listed below against mosquito larvae, pupae and eggs.
Samples tested:
1. a 200ml plastic bottle with approximately 30ml liquid coded “7”;
2. a 200ml plastic bottle with approximately 60ml liquid coded “8”; and
3. 20% Aqua Cure .
This test was performed at the SABS laboratories and started with
exposure on Aedes aegypti larvae (+/- 10mm) commenced 30 March 2009. Ten
larvae were placed in each of 28 plastics containers (“replicate”) filled with 500ml
deionized water. The contents of the sample containers were shaken prior to adding
the correct volume to the containers with deionized water and larvae to obtain
dilutions of 1:2000 and 1:4000 respectively. Four replicates were used for each
treatment. The remaining four containers with larvae served as untreated controls.
The larvae were supplied with laboratory diet as food. Morality counts were made
after 48 hours.
[00116] A second part of the test involved Anopheles arabiensis pupae were 5
pupae were placed in each of the first two replicates of each treatment. The number
of adults that hatched were counted after 48 hours.
A third part of the test involved a rafter of Anopheles arabiensis eggs being
placed in replicates, three per treatment. Food was supplied in each container with
the eggs. Three days later, each container was examined for live larvae.
The results are tabulated below:
MORALITY COUNTS OF AEDES AEGYPTI LARVAE
SAMPLE
DILUTION REPLICATESOUT OF 10
OR CODE
TOTAL OUT
OF 40
1 2 3 4
1:2000 10 10 10 10 40
1:4000 10 10 10 10 40
1:2000 10 10 10 10 40
1:4000 10 10 10 10 40
1:2000 10 10 10 10 40
AQUA
CURE
1:4000 10 10 10 10 40
Table 4
NUMBER OF ANOPHELAS ARABIENSIS ADULTS THAT
EMERGED FROM PUPAE
SAMPLE
DILUTION
OR CODE REPLICATES OUT OF 5
TOTAL OUT
OF 10
1:2000 5 5 10
1:4000 0 0 0
1:2000 0 0 0
1:4000 0 0 0
1:2000 0 0 0
AQUA
CURE
1:4000 0 0 0
Table 5
NUMBER OF LIVE ANOPHELES ARABLENSIS LARVAE
SAMPLE
DILUTION REPLICATES OUT OF 10
OR CODE
TOTAL OUT
OF 40
1:2000 0 0 0
1:4000 0 0 0
1:2000 0 0 0
1:4000 0 0 0
1:2000 0 0 0
AQUA
CURE3
1:4000 0 0 0
Table 6
EXAMPLE 4
Bed bug eggs were collected five days after the bed bugs had been fed.
The eggs that were used were white and smooth in appearance as seen in Figure 1.
bed bug eggs were placed into a petri dish containing 1ml of either a control or a
Microbidex-G solution. All eggs were immersed under the solution for 24 hours.
After a 24 hour incubation period at 25 ̊C (60% relative humidity) the bed bug eggs
were placed onto dry filter paper and left to incubate for a further 14 days.
[00120] Microbidex-G is a tradename for a composition, manufactured in
accordance with the description, which includes glutaraldehyde, tergitol 15S9 and a
buffer of sodium acetate tri-hydrate and potassium acetate.
Figure 2 shows the bed bug eggs following 24 hours of incubation with the
control while Figure 3 shows the bed bug eggs after 24 hours of incubation with
concentrated (10%) Microbidex-G.
As can be seen in Figure 3, the bed bug eggs incubated with Microbidex-
G changed to a brown colour when compared to the eggs incubated with the control.
This indicates that the eggs are non-viable.
EXAMPLE 5
[00123] Ten first instar nymphs bedbugs were placed onto filter paper soaked with
1ml of either a control or 10% Microbidex-G, a 1/100 and dilution or a 1/1000
dilution, for 24 hours at 25 ̊C (60% relative humidity). After 24 hours the first instar
nymphs were checked for viability by prodding with a set of forceps.
Graph 1
The above graph details the number of dead and alive first instar nymphs
following 24 hours of incubation with either the control or Microbidex-G solution.
Incubation with Microbidex-G has increased the morality if first instar nymphs when
compared to the control.
EXAMPLE 6
This test involved the count of the number of surviving bed bugs 24 hours
after a 1 minute exposure to a number of test solutions of 30% Microbidex-G at
different dilutions.
[00126] The samples studied were on instar nymphs. The nymphs had a human
blood feed the week before.
Sample description PPM Survival %
Deionized water --- 90%
Microbidex-G (3.0% stabilized activated glutaraldehyde) = neat 30,000 3%
Microbidex-G (3.0% stabilized activated glutaraldehyde) = 1:100 dilution 300 53%
Microbidex-G (3.0% stabilized activated glutaraldehyde) = 1:1000 dilution 30 77%
Tide HE® (1 cap in 75 litres = working solution) 80%
Tide HE® + Microbidex-G (1:1) 7%
Table 7
What is notable is the high mortality rate, in the concentrate and Tide HE®
samples and this rate is achieved only after a minute of exposure.
EXAMPLE 7
In this test, 120 mated, female (lab strained) bed bugs were ordered. The
transit time for shipment was between 7-10 days during which time the female bed
bugs laid eggs on a piece of white, corrugated paper. The paper that contained all
the bed bugs, nymphs, and eggs were removed and placed on a disposable petri
dish (60mm x 15mm). All nymphs and adult bed bugs were removed using flexible
forceps and placed back into a vial. Using forceps, bed bug eggs were carefully
scraped from the paper and collected in the petri dish.
[00129] Five Microbidex formulations were used in this study (Microbidex “C”,
Microbidex, “G”, Microbidex “I”, MIcrobidex “N”, Microbidex “S”). Each formulation is
a composition, manufactured in accordance with the description, containing citral,
glutaraldehyde, iso-phthalaldehyde, nonanoldehyde and succindaldehyde
respectively.
[00130] Microbidex “C”, “G”,”N”, and “S” were tested at 100%, 50%, and 10% of the
sample concentrations provided. Formulations were diluted using acetone and an
acetone only solution was used as a control. MIcrobidex “I” did not stay in solution,
so it was diluted to 10%, 5%, and 1% of the sample concentration provided.
Whatman #1 5.5 cm filter paper (Cat No Whatman, 1001-055) were placed
inside a petri dish and 25 µL of each concentration was dispensed onto the filter
paper using a pipette to ensure complete saturation of the filter paper. Each sample
and the acetone control were replicated three times. Bed bug eggs were checked
under the microscope to determine their viability. Viable eggs can be identified by
their pearly grey color and the eggs should appear round and smooth with the red
eyes of the developing nymph visible. Eggs that were collapsed or dented were non-
viable and hatched eggs were white and transparent. Three to five, viable eggs were
collected and placed in the center of each filter paper and lids placed back over the
Petri dish. The number of initial eggs for each sample was recorded.
Each sample was examined under the microscope daily for 6 days to
determine egg mortality. Eggs were recorded either as viable, dead, or hatched
(nymphs). At the end of the experiment, samples and supplies were placed in the
freezer at ˗40°C to kill off all surviving eggs and nymphs. Tables, tray, and
equipment were sprayed with Ortho® Home Defense Dual-Action Bed Bug Killer
after each day of testing.
The results are tabulated below:
Treatment active ingredient Day Day 2 Day 3 Day 4 Day Day
1 5 6
Control 0 7.69 7.69 7.69 7.69 15.38
(Acetone Only)
Microbidex "C" 10% citral 0 28.57 28.57 50.00 50.00 50.00
% citral 0 18.18 18.18 36.36 36.36 36.36
1% citral 0 9.09 9.09 9.09 9.09 9.09
Microbidex "G"
3.0% glutaraldehyde 0 9.09 9.09 18.18 18.18 18.18
1.5% glutaraldehyde 0 7.69 7.69 7.69 15.38 15.38
1.0% glutaraldehyde
0.3% glutaraldehyde 0 0.00 0.00 8.33 8.33 8.33
Microbidex "I" (10%)
1.0% isophthalaldehyde 0 9.09 9.09 9.09 36.36 36.36
0.5% isophthalaldehyde 0 25.00 25.00 33.33 33.33 41.67
0.1% isophthalaldehyde 0 20.00 20.00 30.00 30.00 30.00
Microbidex "N" 10.0% nonanal 0 7.69 7.69 15.38 46.15 69.23
.0% nonanal 0 9.09 9.09 9.09 9.09 9.09
1.0% nonanal 0 16.67 16.67 16.67 25.00 25.00
Microbidex "O"
Microbidex "S" 10.0% succindialdehyde 0 0.00 0.00 0.00 0.00 0.00
Microbidex "S" 5.0% succindialdehyde 0 0.00 0.00 13.33 13.33 13.33
Microbidex "S" 1.0% succindialdehyde 0 0.00 0.00 0.00 0.00 0.00
Table 8
Notably in this test is the adaptation of a high hurdle of insecticidal efficacy
in that eggs were chosen as the immature stage and the relevant insecticidal
composition was applied to the filter paper before the introduction of the eggs to the
paper. The composition was not applied directly to the eggs by soaking or dipping.
[00135] This test mimicked a real life application in which the composition would be
applied to, for example, bedding onto which the bed bugs would thereafter infect.
[00135A] In this specification where reference has been made to patent
specifications, other external documents, or other sources of information, this is
generally for the purpose of providing a context for discussing the features of the
invention. Unless specifically stated otherwise, reference to such external
documents is not to be construed as an admission that such documents, or such
sources of information, in any jurisdiction, are prior art, or form part of the common
general knowledge in the art.
[00135B] Certain statements that appear herein are broader than what appears in
the statements of the invention. These statements are provided in the interests of
providing the reader with a better understanding of the invention and its practice. The
reader is directed to the accompanying claim set which defines the scope of the
invention.
Claims (8)
1. A method of insect control comprising the step of applying, to an environment containing an immature form of the insect, a stable aqueous carbonyl 5 compound containing solution, the solution including: a) at least one aldehyde compound selected from the following: nonanaldehyde, furfuraldehyde, succinaldehyde, glutaraldehyde, adipaldehyde, and iso-phthalaldehyde present in the solution in a concentration range of 0.001% to 2% m/v; 10 b) a surfactant or detergent; c) a pH modifier; and d) a buffer.
2. A method according to claim 1 wherein the solution is applied to the environment by spraying a dispersant. 15
3. A method according to claim 2 wherein the dispersant is a diluted form of the stable aqueous carbonyl solution, diluted either with distilled or potable water, an alcohol or a solvent.
4. A method according to any one of claim 2 or 3 wherein the solution or the dispersant is applied in the form of a spray, a fog, a foam or mist.
5. A method according to claim 1 wherein the solution is applied as an additive to a granule or pellet of a compressed binding substance.
6. A method according to any one of claims 1 to 5 wherein the surfactant or detergent is one or more of the following: an alcohol ethoxylate surfactant, a 5 nonylphenol surfactant, an alkyl glycoside, sulphonic acid, sodium lauryl ethyl sulphate, sodium lauryl sulphate, a twin chain quaternary ammonium compound, cocopropyldiamide (CPAD), alkyl sulphate esters, benzenesulfonic acid, C10alkyl derivatives and their sodium salts, D- glucopyranose, oligomeric glycosides and sorbitan monostearate. 10
7. A method according to any one of claims 1 to 6 wherein the buffer includes at least one of the following: calcium acetate, magnesium acetate, sodium acetate, sodium acetate tri-hydrate, potassium acetate, lithium acetate, propylene glycol, hexalene glycol, sodium phosphate, sodium tri-phosphate, potassium phosphate, lithium phosphate, zinc perchlorate, zinc sulphate, 15 cupric chlorate and cupric sulphate.
8. A method of insect control according to any one of claims 1 to 7, substantially as herein described with reference to any example thereof and with or reference to the accompanying figures.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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NZ768050A NZ768050B2 (en) | 2014-10-05 | 2015-10-02 | An aldehyde containing composition for insect control |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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ZA201406844 | 2014-10-05 | ||
ZA2014/06844 | 2014-10-05 | ||
PCT/IB2015/001651 WO2016042389A1 (en) | 2014-09-17 | 2015-10-02 | An aldehyde containing composition for insect control |
Publications (2)
Publication Number | Publication Date |
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NZ731106A NZ731106A (en) | 2020-10-30 |
NZ731106B2 true NZ731106B2 (en) | 2021-02-02 |
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