WO2009135252A1 - Treatment of fruit or vegetables - Google Patents

Treatment of fruit or vegetables Download PDF

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Publication number
WO2009135252A1
WO2009135252A1 PCT/AU2009/000556 AU2009000556W WO2009135252A1 WO 2009135252 A1 WO2009135252 A1 WO 2009135252A1 AU 2009000556 W AU2009000556 W AU 2009000556W WO 2009135252 A1 WO2009135252 A1 WO 2009135252A1
Authority
WO
WIPO (PCT)
Prior art keywords
treatment
solution
benzoate
sulphite
benzoic acid
Prior art date
Application number
PCT/AU2009/000556
Other languages
French (fr)
Inventor
William Bliss
Original Assignee
Wobelea Pty Limited
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
Priority claimed from AU2008902199A external-priority patent/AU2008902199A0/en
Application filed by Wobelea Pty Limited filed Critical Wobelea Pty Limited
Priority to AU2009243915A priority Critical patent/AU2009243915B2/en
Priority to NZ590171A priority patent/NZ590171A/en
Publication of WO2009135252A1 publication Critical patent/WO2009135252A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/10—Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
    • A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
    • A23B7/154—Organic compounds; Microorganisms; Enzymes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463—Organic compounds; Microorganisms; Enzymes
    • A23L3/3481—Organic compounds containing oxygen
    • A23L3/3508—Organic compounds containing oxygen containing carboxyl groups

Definitions

  • This invention relates to a treatment for fruit and vegetables and particularly a treatment to remove fungi therefrom.
  • the treatment may be in the form of a spray or dust applied to the growing crop or can be applied in either of these ways post harvest In the packing shed.
  • fungicidal treatments may produce residues, although very small, leave the treated product in breach of the law of the country to which it has been exported.
  • the object of the invention is to provide a method of treating products in which the spectrum of activity includes plant and human pathogens and which leaves a residue which is acceptable for use of the product to be treated.
  • the invention includes the treatment of products, particularly fruit and vegetables, with a solution of a benzoic acid, derivatives therefrom, the salts of the derivatives.
  • the constituents can also include other preservatives as such as sulphite and metabisulphite.
  • the reaction of these actives to sensing probes and because the ratio of the constituents in known enables stable control of the cleansing process to be achieved.
  • the invention may be applied to either growing crops and/or post harvest and may be by means of the use of an aqueous spray or dust.
  • sodium benzoate is used in an aqueous solution to treat such products.
  • esters of the benzoic acid are used as they give very good results and the high esters, such as propyl esters, are satisfactory, although they are not highly soluble in aqueous solution.
  • the concentration need only to be very low, this is not detrimental.
  • salts of such esters and, in particular, the salts of high molecular weight esters, such as propyl esters; are extremely satisfactory as they have a good kill rate at low concentrations.
  • the sodium propyl benzoate may need to be used only at a percentage of 0.04%.
  • ORP sensing probes for the sulfite and as the ratio of the active constituents is known, very precise levels of the active constituents can be applied to the produce.
  • a particular formulation which could be useful would be a mixture of sodium benzoate, sodium sulphite, sodium bicarbonate and a food grade dessicant
  • the sulphite can be used as a tracer- to ensure that the concentration of the benzoate is maintained within a required range and the bicarbonate is used as a buffer to keep the pH of the order of 8.4.
  • the sulphite may be replaced by metabisulfite and if no sodium bicarbonate was included in the spray, the spray would be at pH 7 or lower.
  • Data logging can be used to maintain a record of the operation of the process.
  • Japan is one country in which residues are carefully checked and fruit or ⁇ vegetables can be rejected if the residue is too high.
  • soy sauce is permitted to have a residue of benzoic acid or benzoates and as such, it is believed that the use of such products could not be objectionable.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Microbiology (AREA)
  • Agronomy & Crop Science (AREA)
  • Nutrition Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

The specification describes the treatment of products, particularly fruit and vegetables to remove fungi therefrom comprising treating the products with a solution of the group comprising benzoic acid, derivatives therefrom, the salts of the derivatives. It is preferred that the treatment uses an ester of the benzoic acid and this may be a propyl ester, or a salt thereof.. The treatment can be effected wither in the field or in the packing shed and the active material can be applied to the products as a spray or a dust. The compound used may also include a sulphite or metabisulphite and the sulphite can be used with a proble which enables the percentage of the benzoate to be maintained and controlled.

Description

TREATMENT OF FRUIT OR VEGETABLES
Technical Area
This invention relates to a treatment for fruit and vegetables and particularly a treatment to remove fungi therefrom. The treatment may be in the form of a spray or dust applied to the growing crop or can be applied in either of these ways post harvest In the packing shed.
Background to the Invention
Where fruit and vegetables are to be eaten it is essential that any treatment given to them does not lead to residues which exceed safe limits. Significant variation in allowable residues may exist between local and overseas markets.
Many of the fungicidal treatments may produce residues, although very small, leave the treated product in breach of the law of the country to which it has been exported.
Countries which are extremely difficult at the present time include Japan and some European members. Outline of the Invention
The object of the invention is to provide a method of treating products in which the spectrum of activity includes plant and human pathogens and which leaves a residue which is acceptable for use of the product to be treated.
The invention includes the treatment of products, particularly fruit and vegetables, with a solution of a benzoic acid, derivatives therefrom, the salts of the derivatives.
The constituents can also include other preservatives as such as sulphite and metabisulphite. The reaction of these actives to sensing probes and because the ratio of the constituents in known enables stable control of the cleansing process to be achieved.
By the use of data logging it is possible to ensure accurate quality control of the process.
Description of an Embodiment of the Invention
The invention may be applied to either growing crops and/or post harvest and may be by means of the use of an aqueous spray or dust. In one particular application of the invention sodium benzoate is used in an aqueous solution to treat such products.
In other applications various esters of the benzoic acid are used as they give very good results and the high esters, such as propyl esters, are satisfactory, although they are not highly soluble in aqueous solution. As, in this application, the concentration need only to be very low, this is not detrimental.
In a preferred form of the invention we use salts of such esters and, in particular, the salts of high molecular weight esters, such as propyl esters; are extremely satisfactory as they have a good kill rate at low concentrations. For example, where benzoic acid itself might need to be applied in a concentration of 0.16% the sodium propyl benzoate may need to be used only at a percentage of 0.04%. In some applications it is useful to use a mixture of sodium sulfite and sodium benzoate which appear to have a synergistic effect as far as treatment is concerned. Further, by the use of ORP sensing probes for the sulfite, and as the ratio of the active constituents is known, very precise levels of the active constituents can be applied to the produce.
Trials using propyl benzoate have shown very satisfactory results against various organisms and also botrytis in the grape industry.
A particular formulation which could be useful would be a mixture of sodium benzoate, sodium sulphite, sodium bicarbonate and a food grade dessicant The sulphite can be used as a tracer- to ensure that the concentration of the benzoate is maintained within a required range and the bicarbonate is used as a buffer to keep the pH of the order of 8.4.
In the case of a field spray, the sulphite may be replaced by metabisulfite and if no sodium bicarbonate was included in the spray, the spray would be at pH 7 or lower.
Data logging can be used to maintain a record of the operation of the process.
Tests using ethyl and ethyl salts have given good result, but a preferment is to use a combination of propyl and butyl salts.
Japan is one country in which residues are carefully checked and fruit or ■ vegetables can be rejected if the residue is too high. However, under their food laws, soy sauce is permitted to have a residue of benzoic acid or benzoates and as such, it is believed that the use of such products could not be objectionable.
Whilst there have been described herein certain applications of the invention, it is to be understood that these are exemplary only, and variations and modifications can be made within the spirit ans scope of the invention as described herein.

Claims

We claim:
1. The treatment of products, particularly fruit and vegetables to remove fungi therefrom comprising treating the products with an active material of the group comprising benzoic acid, derivatives therefrom, the salts of the derivatives.
2. The treatment as claimed in claim 1 wherein the treatment is effected using the active material in an aqueous solution.
3. The treatment as claimed in claim 1 wherein the treatment is effected as a dust.
4. The treatment as claimed in claim 3 wherein the dust includes an inert carrier.
5. The treatment as claimed in any one of claims 1 to 4 wherein the active material used is sodium benzoate.
6. The treatment as claimed in any one of claims 1 to 4 wherein the compound used in the solution is an ester of the benzoic acid
7. A treatment as claimed in claim 6 wherein the ester of benzoic acid used is a propyl or butyl ester.
8. A treatment as claimed in claim 6 or claim 7 wherein the active material used in the solution is a salt of the ester.
9. A treatment as claimed in claim 7 wherein the active material used is sodium propyl benzoate.
10. The treatment as claimed in any one of claims 1 to 9 wherein the active material also Include a sulphite or a metabisulphite.
11. The treatment as claimed in claim 10 wherein the material is used in aqueous solution and wherein the ratio of the benzoate and the sulphite/metabisulphite in the solution is determined before the compound is used and as the reaction of the sulphite or metabisulphite to sensing probes is known, the amount of the benzoate can closely be controlled.
12. The treatment as claimed in claim 11 where the compounds in the solution are a mixture of sodium benzoate, sodium sulphite, sodium bicarbonate and a food grade dessicant.
13. The treatment as claimed in claim 12 wherein the sulphite is used as a tracer to ensure that the concentration of the benzoate is maintained within a required range and the bicarbonate is used as a buffer to keep the pH of the order of 8.4.
14. The treatment as claimed claim 11 wherein the compounds in the solution are a mixture of sodium benzoate, sodium metabisulfite and a food grade dessicant whereby the pH of the mixture can be maintained at not more than 7.0.
15. The treatment as claimed in any one of claims 1 to 11 wherein the compound in the solution is a mixture of ethyl and methyl salts of benzoic acid.
16. The treatment as claimed in any one of claims 1 to 11 wherein the compound in the solution is a mixture of propyl and butyl salts of benzoic acid.
PCT/AU2009/000556 2008-05-06 2009-05-05 Treatment of fruit or vegetables WO2009135252A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2009243915A AU2009243915B2 (en) 2008-05-06 2009-05-05 Treatment of fruit or vegetables
NZ590171A NZ590171A (en) 2008-05-06 2009-05-05 Treatment of fruit or vegetables with benzoic acid or derivatives thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2008902199 2008-05-06
AU2008902199A AU2008902199A0 (en) 2008-05-06 Treatment of fruit or vegetables

Publications (1)

Publication Number Publication Date
WO2009135252A1 true WO2009135252A1 (en) 2009-11-12

Family

ID=41264330

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2009/000556 WO2009135252A1 (en) 2008-05-06 2009-05-05 Treatment of fruit or vegetables

Country Status (3)

Country Link
AU (1) AU2009243915B2 (en)
NZ (1) NZ590171A (en)
WO (1) WO2009135252A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021026615A1 (en) * 2019-08-14 2021-02-18 Wobelea Pty Ltd A method for treatment of crops

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549758A (en) * 1993-11-01 1996-08-27 The Procter & Gamble Company Cleaning methods and compositions for produce
EP0772974A1 (en) * 1995-11-01 1997-05-14 Director General Of Kyushu National Agricultural Experiment Station Benzyl benzoate containing compositions for controlling planthoppers
JP2002284607A (en) * 2001-03-27 2002-10-03 Hokkaido Mitsui Chemicals Inc Agent for enhancing potassium ion absorption by plants and method for enhancing potassium ion absorption by plants using the same
US20040167220A1 (en) * 2003-02-20 2004-08-26 Horst R. Kenneth Environmentally safe fungicide and bactericide formulations
CN1711855A (en) * 2005-07-25 2005-12-28 山西大学 Antioxidant food antistaling agent
EP1776863A1 (en) * 2004-08-11 2007-04-25 Kumiai Chemical Industry Co., Ltd. Agricultural chemical composition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549758A (en) * 1993-11-01 1996-08-27 The Procter & Gamble Company Cleaning methods and compositions for produce
EP0772974A1 (en) * 1995-11-01 1997-05-14 Director General Of Kyushu National Agricultural Experiment Station Benzyl benzoate containing compositions for controlling planthoppers
JP2002284607A (en) * 2001-03-27 2002-10-03 Hokkaido Mitsui Chemicals Inc Agent for enhancing potassium ion absorption by plants and method for enhancing potassium ion absorption by plants using the same
US20040167220A1 (en) * 2003-02-20 2004-08-26 Horst R. Kenneth Environmentally safe fungicide and bactericide formulations
EP1776863A1 (en) * 2004-08-11 2007-04-25 Kumiai Chemical Industry Co., Ltd. Agricultural chemical composition
CN1711855A (en) * 2005-07-25 2005-12-28 山西大学 Antioxidant food antistaling agent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021026615A1 (en) * 2019-08-14 2021-02-18 Wobelea Pty Ltd A method for treatment of crops
EP4013227A4 (en) * 2019-08-14 2023-09-06 Wobelea Pty. Limited A method for treatment of crops

Also Published As

Publication number Publication date
NZ590171A (en) 2012-08-31
AU2009243915A1 (en) 2009-11-12
AU2009243915B2 (en) 2014-03-20

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