US20050048665A1 - pH colour indicator for use with agricultural compounds - Google Patents

pH colour indicator for use with agricultural compounds Download PDF

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Publication number
US20050048665A1
US20050048665A1 US10/646,928 US64692803A US2005048665A1 US 20050048665 A1 US20050048665 A1 US 20050048665A1 US 64692803 A US64692803 A US 64692803A US 2005048665 A1 US2005048665 A1 US 2005048665A1
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US
United States
Prior art keywords
concentrate
indicator
water
agricultural
naturally occurring
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.)
Abandoned
Application number
US10/646,928
Inventor
Martin Bloomberg
Mark Houston-McMillan
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.)
Nutriag Ltd
Original Assignee
Nutriag Ltd
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 Nutriag Ltd filed Critical Nutriag Ltd
Priority to US10/646,928 priority Critical patent/US20050048665A1/en
Assigned to NUTRIAG LTD. reassignment NUTRIAG LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLOOMBERG, MARTIN DAVID, HOUSTON-MCMILLAN, MARK STEWART
Priority to AU2004266047A priority patent/AU2004266047B2/en
Priority to US10/570,048 priority patent/US10145803B2/en
Priority to CA 2536808 priority patent/CA2536808C/en
Priority to PCT/CA2004/001555 priority patent/WO2005018334A1/en
Publication of US20050048665A1 publication Critical patent/US20050048665A1/en
Priority to US16/180,680 priority patent/US10591419B2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/80—Indicating pH value
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N61/00—Biocides, pest repellants or attractants, or plant growth regulators containing substances of unknown or undetermined composition, e.g. substances characterised only by the mode of action
    • 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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • 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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/03—Algae
    • 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
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08—Magnoliopsida [dicotyledons]
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity

Definitions

  • This invention relates to agricultural compounds and more particularly to an improved agricultural compound which uses a naturally occurring pH indicator rather than a chemical pH indicator.
  • U.S. Pat. No. 5,278,132 granted to Gouws & Scheepers (Proprietary) Limited discloses a concentrate for dilution with water useful in the production of agricultural compounds for application to crops, soil or animals.
  • the concentrate is added to the agricultural compound and then diluted with water until the desired pH is reached. This desired level of pH is controlled by the agricultural compound.
  • the patent discloses several chemicals which are used to determine the level of pH. These compounds include methyl red, resorcin blue, 2,5-dinitrophenol and chlorophenol red. These pH indicators change colour when the pH is changed and accordingly, provide a visual indicator as to when the desired pH is reached.
  • the present invention provides an improvement wherein a completely naturally occurring product is used as the pH indicator.
  • the invention provides a naturally occurring pH indicator for use in a concentrate for preparing an agricultural compound which comprises an extract from grapes, cabbage or lichen.
  • the invention provides a concentrate comprising a mixture of a pH modifying agent and a naturally occurring pH indicator for colouring water, which concentrate can be diluted with water and added to an agricultural chemical for application to crops, soil or animals, the agricultural chemical having an activity that varies with the pH of the water and having an acceptable agricultural activity at a pH within the range of 4-6, wherein the proportions of pH modifying agent and pH indicator in the concentrate are such that when the concentrate is diluted with water and the pH of the water is modified by the pH modifying agent, the pH indicator indicates visually when the pH of the water is in the range of from about 4 to about 6.
  • the pH indictor of the present invention is selected from the group consisting of extracts from grape skins, cabbage or lichen. Extracts of grape skins are preferred because the required concentration is less but extracts of cabbage and lichen are also acceptable although they do require a higher concentration.
  • the pH indicator change colour at a pH from about 4 to about 6. It is also desired that the indicator not have any deleterious effects on the crops or animals and it is for this reason that the naturally occurring products of the invention are so useful.
  • the grapes are first processed to remove the juice from the grapes to produce grape juice or wine and then the skin of the grape is removed.
  • the grape skin extract is a purplish-red liquid which is prepared by the aqueous extraction of the fresh deseeded marc remaining after the grapes have been pressed.
  • the extract contains anthocyanins, tartaric acid, tannins, sugars and minerals but not in the same proportions as in the grape juice.
  • sulphur dioxide is added and most of the extracted sugars are fermented to alcohol.
  • the extract is then concentrated by vacuum evaporation during which almost all of the alcohol is removed. A small amount of sulphur dioxide may be present.
  • the extract shows a blue colour at a pH greater than 5 and a red colour at a pH lower than 5.
  • composition suitable for pH reduction, control and buffering in aqueous agricultural compositions for application to plants or soil an alkali sensitive agricultural chemicals subject to degradation in alkaline environments was formulated with the following composition: Nonyl phenoxy polyoxyethylene glycol 10.4 Monoortho-phosphoric esters 43.6 Diorthophosphoric esters 2.9 Isopropyl alcohol 15.6 Water 17.5 Grape skin extract 10.0 All percentages are expressed in mass/mass.
  • a second example of the concentrate (acid adjuvant) suitable for pH reduction, control and buffering in aqueous agricultural compositions for application to plants or soil an alkali sensitive agricultural chemicals subject to degradation in alkaline environments was formulated with the following composition: Nonyl phenoxy polyoxyethylene glycol 10.4 Monoortho-phosphoric esters 43.6 Diorthophosphoric esters 2.9 Isopropyl alcohol 15.6 Cabbage Extract 27.5 All percentages are expressed in mass/mass.
  • a third example of the concentrate (acid adjuvant) suitable for pH reduction, control and buffering in aqueous agricultural compositions for application to plants or soil an alkali sensitive agricultural chemicals subject to degradation in alkaline environments was formulated with the following composition: Nonyl phenoxy polyoxyethylene glycol 10.4 Monoortho-phosphoric esters 43.6 Diorthophosphoric esters 2.9 Isopropyl alcohol 15.6 Lichen extract 27.5 All percentages are expressed in mass/mass.

Abstract

This invention discloses a new class of pH indicators suitable for use in agricultural compounds. The class comprises naturally occurring substances which are extracts from grape skins, cabbage and lecithin. Safety concerns are now causing regulatory bodies to prohibit use of chemical pH indicators in compounds which are used for crops and animals. The naturally occurring compounds of this invention satisfy these concerns of the regulators and function as well as chemical indicators of the prior art.

Description

  • This invention relates to agricultural compounds and more particularly to an improved agricultural compound which uses a naturally occurring pH indicator rather than a chemical pH indicator.
    • DESCRIPTION OF THE PRIOR ART
  • U.S. Pat. No. 5,278,132 granted to Gouws & Scheepers (Proprietary) Limited discloses a concentrate for dilution with water useful in the production of agricultural compounds for application to crops, soil or animals. The concentrate is added to the agricultural compound and then diluted with water until the desired pH is reached. This desired level of pH is controlled by the agricultural compound.
  • The patent discloses several chemicals which are used to determine the level of pH. These compounds include methyl red, resorcin blue, 2,5-dinitrophenol and chlorophenol red. These pH indicators change colour when the pH is changed and accordingly, provide a visual indicator as to when the desired pH is reached.
  • However, regulatory authorities throughout the world are now discouraging the use of non-natural ingredients especially when the agricultural compounds are used on crops and for treatment of animals. As a result, the chemical pH indicators currently in use are being rejected by regulatory authorities.
  • The Food and Drug Agency of the United States government sets out specifications of products which are approved for such use. These specifications are contained in, inter alia, Federal regulations, Title 21, Part 73.170. It is noted that methyl red is not listed and is therefore not an approved product.
  • Similarly, the European Economic Commission has also issued directives as contained in the EEC Additives No. E163 (Commission directive 95/45/EC as amended) which lists approved products for such use.
    • BRIEF DESCRIPTION OF THE INVENTION
  • Accordingly, the present invention provides an improvement wherein a completely naturally occurring product is used as the pH indicator.
  • To this end, in one of its aspects, the invention provides a naturally occurring pH indicator for use in a concentrate for preparing an agricultural compound which comprises an extract from grapes, cabbage or lichen.
  • In another of its aspects, the invention provides a concentrate comprising a mixture of a pH modifying agent and a naturally occurring pH indicator for colouring water, which concentrate can be diluted with water and added to an agricultural chemical for application to crops, soil or animals, the agricultural chemical having an activity that varies with the pH of the water and having an acceptable agricultural activity at a pH within the range of 4-6, wherein the proportions of pH modifying agent and pH indicator in the concentrate are such that when the concentrate is diluted with water and the pH of the water is modified by the pH modifying agent, the pH indicator indicates visually when the pH of the water is in the range of from about 4 to about 6.
    • DESCRIPTION OF THE PREFERRED EMBODIMENT
  • The inventors have discovered that several naturally occurring products may be used as the colour/pH indicator in the concentrate as disclosed in U.S. Pat. No. 5,278,132. These naturally occurring compounds produce the same colour changes as do the chemical compounds but are acceptable to regulatory authorities throughout the world. These compounds exhibit no untoward activity to plants or animals.
  • The pH indictor of the present invention is selected from the group consisting of extracts from grape skins, cabbage or lichen. Extracts of grape skins are preferred because the required concentration is less but extracts of cabbage and lichen are also acceptable although they do require a higher concentration.
  • It is desired that the pH indicator change colour at a pH from about 4 to about 6. It is also desired that the indicator not have any deleterious effects on the crops or animals and it is for this reason that the naturally occurring products of the invention are so useful.
  • The grapes are first processed to remove the juice from the grapes to produce grape juice or wine and then the skin of the grape is removed. The grape skin extract is a purplish-red liquid which is prepared by the aqueous extraction of the fresh deseeded marc remaining after the grapes have been pressed. The extract contains anthocyanins, tartaric acid, tannins, sugars and minerals but not in the same proportions as in the grape juice. During the steeping process, sulphur dioxide is added and most of the extracted sugars are fermented to alcohol. The extract is then concentrated by vacuum evaporation during which almost all of the alcohol is removed. A small amount of sulphur dioxide may be present.
  • The extract shows a blue colour at a pH greater than 5 and a red colour at a pH lower than 5.
  • This extract was tested in the formulations disclosed in U.S. Pat. No. 5,278,132 and excellent results were obtained. However, it was found that much higher concentrations were required to show the visual colour change. Concentrations in the range of 10 to 25% were necessary to show the colour changes.
  • The experiments were repeated using cabbage extract and lichen extract. These worked although higher concentrations were necessary. Thus, while they clearly fall within the scope of this invention, the preferred product is grape extract.
  • An example of the concentrate (acid adjuvant) suitable for pH reduction, control and buffering in aqueous agricultural compositions for application to plants or soil an alkali sensitive agricultural chemicals subject to degradation in alkaline environments was formulated with the following composition:
    Nonyl phenoxy polyoxyethylene glycol 10.4
    Monoortho-phosphoric esters 43.6
    Diorthophosphoric esters 2.9
    Isopropyl alcohol 15.6
    Water 17.5
    Grape skin extract 10.0

    All percentages are expressed in mass/mass.
  • A second example of the concentrate (acid adjuvant) suitable for pH reduction, control and buffering in aqueous agricultural compositions for application to plants or soil an alkali sensitive agricultural chemicals subject to degradation in alkaline environments was formulated with the following composition:
    Nonyl phenoxy polyoxyethylene glycol 10.4
    Monoortho-phosphoric esters 43.6
    Diorthophosphoric esters 2.9
    Isopropyl alcohol 15.6
    Cabbage Extract 27.5

    All percentages are expressed in mass/mass.
  • A third example of the concentrate (acid adjuvant) suitable for pH reduction, control and buffering in aqueous agricultural compositions for application to plants or soil an alkali sensitive agricultural chemicals subject to degradation in alkaline environments was formulated with the following composition:
    Nonyl phenoxy polyoxyethylene glycol 10.4
    Monoortho-phosphoric esters 43.6
    Diorthophosphoric esters 2.9
    Isopropyl alcohol 15.6
    Lichen extract 27.5

    All percentages are expressed in mass/mass.
  • Accordingly, the use of a naturally occurring pH indicator represents a significant advance.
  • Although the invention describes and illustrates a preferred embodiment of the invention, kit is understood that it is no so restricted and includes in its scope, variations thereof.

Claims (5)

1. A naturally occurring pH indicator for use in a concentrate for preparing an agricultural compound which comprises an extract from grapes, cabbage or lichen.
2. A concentrate comprising a mixture of a pH modifying agent and a naturally occurring pH indicator for colouring water, which concentrate can be diluted with water and added to an agricultural chemical for application to crops, soil or animals, the agricultural chemical having an activity that varies with the pH of the water and having an acceptable agricultural activity at a pH within the range of 4-6, wherein the proportions of pH modifying agent and pH indicator in the concentrate are such that when the concentrate is diluted with water and the pH of the water is modified by the pH modifying agent, the pH indicator indicates visually when the pH of the water is in the range of from about 4 to about 6.
3. A concentrate as claimed in claim 2 wherein said pH indicator is selected from the group comprising extracts of grape skins, cabbage and lecithin.
4. A concentrate as claimed in claim 3 wherein said pH indicator is an extract of grape skin.
5. A concentrate as claimed in claim 4 wherein said pH indicator is present in a concentration of about 10 to about 25%.
US10/646,928 2003-08-25 2003-08-25 pH colour indicator for use with agricultural compounds Abandoned US20050048665A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US10/646,928 US20050048665A1 (en) 2003-08-25 2003-08-25 pH colour indicator for use with agricultural compounds
AU2004266047A AU2004266047B2 (en) 2003-08-25 2004-08-24 pH colour indicator for use with agricultural compounds
US10/570,048 US10145803B2 (en) 2003-08-25 2004-08-24 pH colour indicator for use with agricultural compounds
CA 2536808 CA2536808C (en) 2003-08-25 2004-08-24 Natural ph colour indicator for use with agricultural compounds
PCT/CA2004/001555 WO2005018334A1 (en) 2003-08-25 2004-08-24 pH COLOUR INDICATOR FOR USE WITH AGRICULTURAL COMPOUNDS
US16/180,680 US10591419B2 (en) 2003-08-25 2018-11-05 pH colour indicator for use with agricultural compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/646,928 US20050048665A1 (en) 2003-08-25 2003-08-25 pH colour indicator for use with agricultural compounds

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10/570,048 Continuation US10145803B2 (en) 2003-08-25 2004-08-24 pH colour indicator for use with agricultural compounds
PCT/CA2004/001555 Continuation WO2005018334A1 (en) 2003-08-25 2004-08-24 pH COLOUR INDICATOR FOR USE WITH AGRICULTURAL COMPOUNDS

Publications (1)

Publication Number Publication Date
US20050048665A1 true US20050048665A1 (en) 2005-03-03

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Family Applications (3)

Application Number Title Priority Date Filing Date
US10/646,928 Abandoned US20050048665A1 (en) 2003-08-25 2003-08-25 pH colour indicator for use with agricultural compounds
US10/570,048 Active 2027-04-07 US10145803B2 (en) 2003-08-25 2004-08-24 pH colour indicator for use with agricultural compounds
US16/180,680 Expired - Fee Related US10591419B2 (en) 2003-08-25 2018-11-05 pH colour indicator for use with agricultural compounds

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Application Number Title Priority Date Filing Date
US10/570,048 Active 2027-04-07 US10145803B2 (en) 2003-08-25 2004-08-24 pH colour indicator for use with agricultural compounds
US16/180,680 Expired - Fee Related US10591419B2 (en) 2003-08-25 2018-11-05 pH colour indicator for use with agricultural compounds

Country Status (4)

Country Link
US (3) US20050048665A1 (en)
AU (1) AU2004266047B2 (en)
CA (1) CA2536808C (en)
WO (1) WO2005018334A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150344380A1 (en) * 2014-05-29 2015-12-03 The Andersons, Inc. Liquid fertilizer composition containing color change indicator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2726064C (en) 2010-12-21 2014-03-11 Nutriag Ltd. Agricultural composition comprising ph sensitive agricultural chemicals and organic ph buffer
ES2703053T3 (en) 2013-09-19 2019-03-06 Suunil Sudhakar Chaudhry A multifunctional nutritional adjuvant chemical composition for use in agriculture
ES2759947B2 (en) * 2018-11-12 2020-12-21 Chinchon Paya Jose Servando Use of Aspalathus linearis as a pH indicator in cement-based materials

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Publication number Priority date Publication date Assignee Title
US5278132A (en) * 1986-02-11 1994-01-11 Gouws & Scheepers (Propietary) Ltd. Agricultural compounds
US20010012636A1 (en) * 1999-08-20 2001-08-09 Radiancy Inc. Chewing gum with pH indicator
US6589761B1 (en) * 1999-06-19 2003-07-08 Marv Freadman Method and apparatus for detecting bacteria

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US4939086A (en) * 1985-05-24 1990-07-03 International Genetic Sciences Partnership Production and use of a high-intensity red natural colorant derived from carrot cell tissue cultures
JP2949474B2 (en) 1995-08-28 1999-09-13 隆久 古田 Helicobacter pylori eradication determination method based on change rate of pepsinogen I / II ratio
US6036666A (en) * 1996-10-09 2000-03-14 Peiler; Frances K. Tampon applicator
AU1220499A (en) 1997-11-14 1999-06-07 Gouws & Scheepers (Proprietary) Limited Agricultural compositions comprising a ph indicator
US6132791A (en) * 1998-03-06 2000-10-17 Barkley Seed, Inc. Natural red sunflower anthocyanin colorant with naturally stabilized color qualities, and the process of making
AU2003274942A1 (en) * 2002-08-30 2004-03-19 Mattel, Inc. Color-changing beverage compositions
US20040115319A1 (en) * 2002-09-16 2004-06-17 Agcert International, Llc Food-borne pathogen and spoilage detection device and method
US20050090414A1 (en) * 2003-10-23 2005-04-28 Sarah Rich Color changing hand soap composition

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Publication number Priority date Publication date Assignee Title
US5278132A (en) * 1986-02-11 1994-01-11 Gouws & Scheepers (Propietary) Ltd. Agricultural compounds
US6589761B1 (en) * 1999-06-19 2003-07-08 Marv Freadman Method and apparatus for detecting bacteria
US20010012636A1 (en) * 1999-08-20 2001-08-09 Radiancy Inc. Chewing gum with pH indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150344380A1 (en) * 2014-05-29 2015-12-03 The Andersons, Inc. Liquid fertilizer composition containing color change indicator
US10029954B2 (en) * 2014-05-29 2018-07-24 The Andersons, Inc. Liquid fertilizer composition containing color change indicator

Also Published As

Publication number Publication date
CA2536808C (en) 2011-11-15
WO2005018334A1 (en) 2005-03-03
US10591419B2 (en) 2020-03-17
AU2004266047B2 (en) 2010-09-16
US20070111892A1 (en) 2007-05-17
US20190072494A1 (en) 2019-03-07
US10145803B2 (en) 2018-12-04
AU2004266047A1 (en) 2005-03-03
CA2536808A1 (en) 2005-03-03

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AS Assignment

Owner name: NUTRIAG LTD., CANADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLOOMBERG, MARTIN DAVID;HOUSTON-MCMILLAN, MARK STEWART;REEL/FRAME:014432/0452

Effective date: 20030819

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION