CA1265044A - Gelatinized starch matrix insect bait - Google Patents

Gelatinized starch matrix insect bait

Info

Publication number
CA1265044A
CA1265044A CA000449585A CA449585A CA1265044A CA 1265044 A CA1265044 A CA 1265044A CA 000449585 A CA000449585 A CA 000449585A CA 449585 A CA449585 A CA 449585A CA 1265044 A CA1265044 A CA 1265044A
Authority
CA
Canada
Prior art keywords
insect
bait
starch
controlling
insect bait
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.)
Expired - Fee Related
Application number
CA000449585A
Other languages
French (fr)
Inventor
Stan J. Flashinski
Daniel R. Bloch
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.)
S C Johnson and Son Inc
Original Assignee
S C Johnson and Son Inc
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 S C Johnson and Son Inc filed Critical S C Johnson and Son Inc
Priority to CA000449585A priority Critical patent/CA1265044A/en
Application granted granted Critical
Publication of CA1265044A publication Critical patent/CA1265044A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, 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
    • A01N25/002Biocides, 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 a foodstuff as carrier or diluent, i.e. baits
    • A01N25/006Biocides, 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 a foodstuff as carrier or diluent, i.e. baits insecticidal

Abstract

ABSTRACT OF DISCLOSURE

An insect bait containing an insect-controlling material in a gelatinized starch matrix. The bait is made by co-extruding starch with the insect-controlling material at temperature and pressure conditions sufficient to cook and gelatinize the starch, or alternatively by mixing pregelatinized starch with the insect-controlling material and water to form a gel. The bait is effective in controlling insects.

Description

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GELATINI ZED STARCH ~TRIX INSECT BAIT

FI ELD OF INVENTI ON

This invention ic~ directed to insect bait. More particularly, the invention is directed to an insect bait S useful in controlling various insects such as ants and roache~ having gelatini7ed starch as the bait matrix.

BACKGROU~D AND PRI OR ART

Efforts to safely and effectively control insects ~uch as ants and roache~ commonly found in household, restaurant, and hotel environments have been going forward continuously almost since the beginning of mankind with varying degrees of success~ These prior art efforts have included the use of direct and residual sprays as well as ~olid bait~ which may contain chemical additives which are designed ~o have varying effects on the insect, including i.ts ability to reproduce or whi.ch results in its outright death.

With ~olid baits, substantial effort has been directed to baits which attract the insect, lPading the insect to devour the bait and an insecticide contained in ~5~

the bait, with the desire~ result. Other effor-ts have been directed to baits which repel the insect and, thus, cause the insect to seek a new environment. These efforts have provided baits containing various attractants, including starches. For example, U.S. Patent No. g60,287 discloses an insecticide composition which can contain from 15~ to 20~ cornstarch. The cornstarch is present in an insecticidal mixture of two metallic salts to separate the respective salt particles and prevent chemical 10 reaction between the salts. U.S. Patent No. 4,321,258, on the other hand, discloses a non-toxic insecticide which can include, inter alia, cornstarch as an attractant for an insect. Various other United States patents such as U.S. Patent Nos. 2,687,365 and 4,332,792 disclose the use of corn syrup and similar materials as insect attractants in insect traps and baits. None discloses the use of starch in the cooked form, or as a gel matrix.

While all of the prior art devices have varying degrees of effectiveness in controlling insects, none are completely acceptable from the standpoint of effectiveness, ease of manufacture, and economy.

- OBJECTS OF THE INVENTIOM

It is an object of the present invention to provide an insect bait containing an insect-controlling :. - , .
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S0~1L4 material, such as an insecticide or insect repellent, where the materials can be cold blended to provide a gelled bait.

It is another object of the invention to provide a method of providing a gelled insect bait based on relatively inexpensive materials which can be conveniently made with conventional mixing equipment.

It is anoth~r object of the present invention to provide an insec~ bait having a gelatinized stable starch matrix which can be cold blended.

It is another object of the invention to provide a method of providing a gelled insect bait based on relatively inexpensive materials.

It is another object of the present~invention to provide an insect bait having a gelatinized stable starch matrix.

These and other objects of the invention will be apparent from the following general description with emphasis being directed to the specific working embodiments.

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DESCRIPTION OF INVENTION WITH PREFERRED EMBODIMENTS
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The aforesaid objects of the present invention are accomplished by providing an insect bait based on starch in combination with other ingredients including attractants, insecticides or repellents, and preservatives wherein starch and the other materials are extruded under pressure and temperature sufficient to cook the starch and form a gelatinized stable gel bait matrix~ Upon the extrusion of the ingredients at temperatures and pressures sufficien-t to gelatinize the starch, a stable starch gel is formed having the essential additives uniformly contained therein, which gel is easily utilized as an - insect bait.

Alternatively, and as a highly preferred embodiment, the invention is directed to the formation of an insec bait using a pregela-tinized starch which has been partially cooked by extrusion to provide a water-absorbing property to the starch. The pregelatinized starch and the essential ingredients of an insect bait such as attractants, insecticides, and/or repellentis, ~ preservatives, water, and preferably an emulsifier are - cold blended. The water essential for forming the gel bait matrix is absorbed by the pregelatinized starch. In this preferred embodiment heating of the materials during :

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formation of the bait is not necessary. However, heating can, at times, be utilized to increase the speed of the gelling process.

The starch, whether extruded with the materials to form a gel or pregelatinized, provides an inexpensive and practical method of forming an insect bait base which is easily used, without messiness, and which is effective in controlling insects. The use of the pregelatinized starch is particularly convenient and effective and, accordingly, is a highly preferred embodiment.

The starch content of the insect bait of the preferred embodiment, i.e., where the starch is pregelatinized, can vary over a range of from about 2.5%
to 15% by weight. Below about 2.5~ a stable gel will not form, but a flowable gel will result. Above about 15~, the pregelatinized starch will very rapidly absorb water and the viscosity of the mixture will increase too rapidly to allow handling of the material before a gel is formed.
It has been found that the preferred range is from about 5% to about lS% pregelatinized starch. This range allows ea~y handling of the materials before the gel is formed, and once formed the gel i8 stable and non-flowable at temperatures up to at least about 140 F., which is a temperature at times reached in warehouses or the like ,:
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whe~e the product may be stored. Pregelatinized starches are commercially available under ~arious tradenames and are based on the common starches such as corn flour, cornstarch, maize, tapioca starch, potato starch, rice starch, and the like. Pregelatinized starch as used herein includes the various commercial products which may or may not include additives such as sodium trimetaphosphate to provide improved gelling characteristics.

In the embodiment not employing pregelatinized starch but where the starch and other components of the bait are subjected to a range of temperatures and pressures so as to extrude the starch and provide a ge], the starch content can, in the event only an insecticide or insect repellent is employed, range up to as high as 99~. The starches employed are again the commonly available starch products including potato starch, corn flour, cornstarch, tapioca starch, maize, and the llke.

In the insect baits of the present invention, it is preferable to utilize in addltion to the starch other attractants such as fruit extracts, honey extracts, the sugars, i.e., sucrose, fructose, maltose, glucose, molasses, and the like, to make the bait more palatable to insects. Normally, for this embodiment the additional ~ ~ ' ~ ~ -6-: :

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-attractants will vary from about 1% to 35~ and will correspondingly decrease the amount of starch utilized.
In the formation of the insect bait by mixing and extruding the components it is essential to utilize additives, including the insecticides and repellents which will withstand the extrusion temperatures of starch without degradation or vaporization. The extrusion temperatures of the insect bait mixture, depending upon i, the content of starch and other additives, will range between about 160 to about 310 F. at pressures of from about 300 through 800~fP

The insecticides which can be utilized in the insect baits of the present invention include the insecticides commonly utilized in controlling insects.
One insecticide which has been found highly effective is O,O-diethyl-0-(3,5,6trichloro-2-pyridyl)-phosphorothioate (Dursban). Other commonly employed insecticides include arsenic and metallic salts. In the preferred embodiment utilizing pregelatinized starch, the bait can include any of the insecticides since the materials can be cold ~blended, or subjected to only slightly elevated temperatures. As previously statea, however, in the embodiment where the materials are mixed and co-extruded, an lnsecticide which does not degrade under extrusion conditions must be selected. The content of insecticide .. .

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: ~' ' , ' ' .' : :. '~' , ~5~)~4 can range fro~ as low as 0.025%, depending upon the insec~icide utilized, up to about 4~. Mormally, however, the effective amounts of insecticide will fall below about 1.0~ by weigh~.

Attractants including sugars, yeast extract, gelatine, and the like, can be utilized to enhance the attraction of the insect to the bait. Normally food attractants such as the sugars will range from about 1~ to 90% in the event the pregelatinized starch is employed.
It has been found, for example, that corn syrup as an attractant in the range of from about 60~ to 90~ is desirable when pregelatinized starch is used, as the lowered moisture within the corn syrup can be sufficient to gel the starch source of moisture; whereas, in the event corn flour or yeast extract is used as the attractant, 5~ to 15% is highly effective. The aforesaid materials have~been found to be effective food ingredients for the insects, particularly ants and cockroaches.

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It has been found desirable when utilizing a ~0 pregelatinized starch to utilize an emulsifier to improve the blending of the pregelatinized starch and other ingredients with water in forming the gel bait matrix.
The emulisifiers can be any of the aommonly employed emulslfiers, and preferably the non-ionic or anionic .

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emulsifiers. The amount of emulisifier utilized will vary depending upon the amount of water in the mix. The water content can vary from a minimum of about 5% which is necessary to form the gel to levels of about 15% or 20%.
In the event a water content of above about 20~ is utilized, the time forming the gel is substantially increased. It has been found, however, that effective insect baits can be prepared where the water content is as high as 80% to 90~.

Other additives can be at times effectively added to the insect bait. These additives include binders such as paraffin wax, synthetic clays, and materials commonly utilized in the formation of insect baits. Preferably, however, when the bait is used as an insecticide only food components are included in the bait.

Having described the invention in general terms, the following two examples define presently preferred embodiments.

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~, : . . , A mixture of - i Cornmeal -------------------- 74.5% by weight Sug~r ----------------------- 25.0% by weight Dursban Insecticides ~------- 0.5~ by weight TOTAL 100.0%

was dry blended to provide a substantially uniform mixture. The mixture was then extruded in a conventional extruder a~ a temperature in the range of 200 to 220 F7, and at a pressure of 500 psi. The extruded material was dispensed in containers in the form of a gel. The gel was stable at room temperature and temperatures up to at least about 140 F. The baits were effective in attracting and destroying roaches and ants.

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An insect bait was formulated containing ingredients as follows:

Fructose Sugar ----~------------------ 70.0%
Corn flour ------------------------- - 10.0%
Yeast Extract --~ ------------- 5.0 Pregelatinized Cornstarch ------------ 5~0~
Insecticide -~Dursban ---------------- 0.1%
Emulsifier - Triton X180 which is an alkyl polyether alcohol anionic emulsifier -------------- 0.4%
Water -------------------------------- 9~5~
TOT~L 100.0%

The above~ingredients were cold blended. Upon complete blending, the materials`provided a gel. The gel was packaged as a stable gel. The all-food bait was effective in attracting and destroyîng ants and roaches.

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As will be apparent to one skilled in the art, various modifications can be made within the scope of the aforesaid description. For example, in place of the insecticide of the above examples an insect repellent can be employed. Such modifications being within the ability of one skilled in the art form a part of th,e present c~ e~
~ invention and are embraced by the ~en*e~ claims.
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Claims (12)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An insect bait comprising a gelatinized starch mat-rix and an insect-controlling material dispersed in said gel matrix, wherein said insect bait is formed by co-extruding starch and said insect-controlling material at temperature and pressure conditions which will form a gelatinized starch matrix, the insect bait having a water content of at least about 15%.
2. An insect bait comprising a gelatinized starch mat-rix and an insect-controlling material dispersed in said gel matrix, wherein said insect bait is formed by blending pre-gelatinized starch with an insect-controlling material and source of moisture, said ingredients being selected to form a gelatinized starch matrix.
3. The insect bait of claim 2 wherein said insect-controlling material is an insecticide.
4. The insect bait of claim 2 wherein said insect-controlling material is an insect repellent.
5. The insect bait of claim 3 wherein said bait in-cludes an insect attractant selected from the group consist-ing of gelatine, corn syrup, sugar, corn flour, molasses, fruit extract, honey extract, and yeast extract.
6. The insect bait of claim 5 wherein said pregelatin-ized starch is present in an amount of from about 2.5% to 15%, said insecticide is present in an amount of from about 0.025% to 0.5%, water is present in an amount of from about 5% to 10%, and said insect attractant is present in an amount of from about 75% to 94%.
7. The insect bait of claim 1 wherein said insect-controlling material is an insecticide.
8. The insect bait of claim 1 wherein said insect-controlling material is an insect repellent.
9 . The insect bait of claim 8 wherein said bait in-cludes an insect attractant selected from the group consist-ing of gelatine, corn syrup, sugar, corn flour, molasses, fruit extract, honey extract, and yeast extract.
10. The insect bait of claim 9 wherein said starch is present in an amount of from about 2.5% to 15%; wherein said insecticide is present in an amount of from about 0.025% to 0.5%; and wherein said insect attractant is present in an amount of from about 75% to 94%.
11. The method of forming an insect bait comprising the steps of co-extruding starch and an insect-controlling mater-ial at a temperature of 160-310cF and pressure of 300-800 psi to cook the starch and form a gelatinized stable gel bait matrix.
12. The method of forming an insect bait comprising the steps of providing a pregelatinized starch and admixing said pregelatinized starch with an insecticide and source of moisture to form a uniform mixture, said ingredients being controlled whereby after mixing a stable gel is formed.
CA000449585A 1984-03-14 1984-03-14 Gelatinized starch matrix insect bait Expired - Fee Related CA1265044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000449585A CA1265044A (en) 1984-03-14 1984-03-14 Gelatinized starch matrix insect bait

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA000449585A CA1265044A (en) 1984-03-14 1984-03-14 Gelatinized starch matrix insect bait
PCT/US1985/000405 WO1985004074A1 (en) 1984-03-14 1985-03-12 Gelatinized starch matrix insect bait
AU41177/85A AU564323B2 (en) 1984-03-14 1985-03-12 Gelatinized starch matrix insect bait

Publications (1)

Publication Number Publication Date
CA1265044A true CA1265044A (en) 1990-01-30

Family

ID=4127405

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000449585A Expired - Fee Related CA1265044A (en) 1984-03-14 1984-03-14 Gelatinized starch matrix insect bait

Country Status (3)

Country Link
AU (1) AU564323B2 (en)
CA (1) CA1265044A (en)
WO (1) WO1985004074A1 (en)

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US4990514A (en) * 1987-04-27 1991-02-05 The Clorox Company Non-particulate, non-flowable, non-repellant insecticide-bait composition for the control of cockroaches
US4911952A (en) * 1987-07-10 1990-03-27 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment within matrix of unmodified starch
AU633504B2 (en) 1988-07-12 1993-02-04 Aquaspersions Limited Combating of undesired organisms
CA1286219C (en) * 1989-06-08 1991-07-16 John W. Tucker Insecticidal bait composition and method for making same
US4992275A (en) * 1989-06-30 1991-02-12 Lush Raymon W Sweet corn based pesticide
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ZA9007289B (en) * 1989-09-15 1991-06-26 Goodman Fielder Wattie Austral Biodegradable controlled release matrices
AU638137B2 (en) * 1989-11-29 1993-06-17 S.C. Johnson & Son, Inc. Gelled aqueous insect bait
US5183690A (en) * 1990-06-25 1993-02-02 The United States Of America, As Represented By The Secretary Of Agriculture Starch encapsulation of biologically active agents by a continuous process
US5837273A (en) * 1991-07-16 1998-11-17 The United States Of America As Represented By The Secretary Of Agriculture Methods and compositions of adherent starch granules for encapsulating pest control agents
US5484587A (en) * 1991-10-31 1996-01-16 Micro Flo Company Diabroticine bait
US5690951A (en) * 1991-10-31 1997-11-25 Micro Flo Company Bait with hot melt binder
US5607684A (en) * 1991-10-31 1997-03-04 Micro Flo Company Manufacture of bait with hot melt binder
CA2091922A1 (en) * 1992-04-02 1993-10-03 John D. Knapp Delivery system for insecticides
US5571522A (en) * 1994-01-31 1996-11-05 Micro Flo Company Bait with corn germ
JPH0987111A (en) * 1995-09-27 1997-03-31 Fumakilla Ltd Poisonous bait agent for controlling insect pest
US5720968A (en) * 1996-08-21 1998-02-24 The United States Of America As Represented By The Secretary Of The Agriculture Device for controlling pests
AT277739T (en) 1996-10-28 2004-10-15 Gen Mills Inc Embedding and Encapsulation of Particles for Controlled Delivery
EP1342548B1 (en) 1996-10-28 2015-12-23 General Mills, Inc. Embedding and encapsulation of controlled release particles and encapsulated product
CA2338620A1 (en) * 1998-07-28 2000-02-10 The United States Of America, As Represented By The Secretary Of Agricul Ture Hydrodynamic insect baits
AR014765A1 (en) 1998-03-23 2001-03-28 Gen Mills Marketing Inc Edible matrix composition chewy texture, edible and chewable product, edible composition, cover food and method for the manufacture of food products
AU753266B2 (en) 1998-07-08 2002-10-10 Kiwicare Corporation Limited Pesticide in gel form
US6500463B1 (en) 1999-10-01 2002-12-31 General Mills, Inc. Encapsulation of sensitive components into a matrix to obtain discrete shelf-stable particles
EP1116515A3 (en) * 2000-01-11 2002-08-21 Givaudan SA Encapsulated liquid
US6468568B1 (en) 2000-06-16 2002-10-22 General Mills, Inc. Oligosaccharide encapsulated mineral and vitamin ingredients
US6436453B1 (en) 2000-06-16 2002-08-20 General Mills, Inc. Production of oil encapsulated minerals and vitamins in a glassy matrix
US6558718B1 (en) 2000-06-19 2003-05-06 General Mills, Inc. Nutrient clusters for food products and methods of preparation
GB2370775A (en) * 2001-01-04 2002-07-10 Nimrod Israely Insecticidal composition based on attractant, insecticide and stabilizer, the outer surface of which expands & loses viscosity on contact with humidity
US7803413B2 (en) 2005-10-31 2010-09-28 General Mills Ip Holdings Ii, Llc. Encapsulation of readily oxidizable components
DE102006055477A1 (en) * 2006-11-24 2008-05-29 Bayer Cropscience Ag Crop protection granules for application to the leaf surface
CN101621923B (en) 2006-12-21 2013-09-18 美国陶氏益农公司 Composite material including a thermoplastic polymer, a pest food material and a pesticide
US8257749B2 (en) 2007-02-08 2012-09-04 Biolargo Life Technologies, Incorporated Systems providing at least pesticidal activity
US8143092B2 (en) 2008-03-10 2012-03-27 Pragati Kumar Methods for forming resistive switching memory elements by heating deposited layers
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Also Published As

Publication number Publication date
WO1985004074A1 (en) 1985-09-26
AU564323B2 (en) 1987-08-06
AU4117785A (en) 1985-10-11
CA1265044A1 (en)

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