WO2000024275A1 - Bactericidal treatment of food storage containers by using electrochemically activated bactericidal aqueous solution - Google Patents
Bactericidal treatment of food storage containers by using electrochemically activated bactericidal aqueous solution Download PDFInfo
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- WO2000024275A1 WO2000024275A1 PCT/IB1999/001700 IB9901700W WO0024275A1 WO 2000024275 A1 WO2000024275 A1 WO 2000024275A1 IB 9901700 W IB9901700 W IB 9901700W WO 0024275 A1 WO0024275 A1 WO 0024275A1
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- Prior art keywords
- aqueous solution
- bactericidal
- solution
- food storage
- electrochemically activated
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Classifications
-
- 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
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/14—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
- A23B4/18—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of liquids or solids
- A23B4/24—Inorganic compounds
-
- 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
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/02—Preserving by means of inorganic salts
- A23B4/023—Preserving by means of inorganic salts by kitchen salt or mixtures thereof with inorganic or organic compounds
-
- 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
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/02—Preserving by means of inorganic salts
- A23B4/027—Preserving by means of inorganic salts by inorganic salts other than kitchen salt, or mixtures thereof with organic compounds, e.g. biochemical compounds
-
- 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
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/14—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
- A23B4/16—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
-
- 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
- A23L3/32—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with electric currents without heating effect
- A23L3/325—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with electric currents without heating effect by electrolysis
-
- 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
- A23L3/3409—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 gases, e.g. fumigation; Compositions or apparatus therefor
-
- 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
- A23L3/358—Inorganic compounds
Definitions
- This invention relates to bactericidal treatment of bio-film in food storage
- the invention relates to bactericidal treatment
- preliminary processing such as "gutting" is done on board out at sea.
- containers shall be interpreted so as to include containers used for
- fresh produce such as fresh fish on trawlers, sheep and cattle carcasses
- the method including the step of treating a container with
- transporter having a bulk food storage container for transporting fresh
- the method may include the step of packing the fresh produce in ice in
- the container the ice being characterised in that it is made from an
- the transporter may be provided with means for providing the aqueous
- the electrochemically activated, bactericidal aqueous solution may be
- the electrochemically activated, bactericidal aqueous solution may be
- the salt may be sodium chloride. In particular, it may be non-iodated sodium
- the anion-containing solution and the cation-containing solution may be
- annular inter-electrode space into a catalytic and an analytic chamber.
- anion-containing solution is referred to hereinafter for brevity as the
- anolyte solution or “anolyte” and the cation-containing solution is
- the electrochemically activated, bactericidal aqueous solution may be
- oxidant and reductant species may be labile and after about 96 hours
- the anolyte solution may have a redox potential of about between
- the anolyte solution may include mixed oxidant species such as CIO; CIO ; HCIO;
- the catholyte solution generally may have a pH of between about 12 and
- catholyte solution may include mixed reductant species such as OH “ ; H 3 " ;
- the apparatus including an electrolysis device, having a
- pH and redox potential are adjustable so as to be suitable for a particular application, such as type of produce, the atmospheric
- the anolyte can be iced either as a concen
- Some trawlers for example, use seawater in their ice. Seawater
- the type of anolyte to be used in the ice is :
- Amps - 1 2 - 1 3 amps (24 volt);
- fogging could be applied, as long as the droplet size of the fogged
- anolyte is small (around 4 to 1 2 micrometers) and the contact
- Fogging time will also depend upon the size and volume of the
- the container would then be allowed to dry before being
- anolyte it is envisaged that the type of anolyte to be used could be:
- Amps - 1 2 - 13 amps (24 volts);
- Samples 1 , 2 and 3 were carcasses fogged separately in chillers
- Enclosed volumes containing diverse equipment including 2 tables and
- the chiller treated had volume (space) for about 1 6 carcasses.
- fogging process consisted of 3 cycles of 20 minutes each, with 10
- Chillers were not in operation. After fogging, carcasses were returned to original chillers.
- Example 3 Chillers were not in operation. After fogging, carcasses were returned to original chillers.
- test conditions were as follows: ANOLYTE : 10 Amp
- mice Total plate count (Rodac plates)
- the fourth Swab was on the side of the triceps cut where all carcasses had been pushed by hand and were therefore more contaminated than adjoining surfaces.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Nutrition Science (AREA)
- Health & Medical Sciences (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention relates to a method for bactericidal treatment of bulk food storage containers for fresh produce, the method including the step of treating a container with electrochemically activated, bactericidal aqueous solution.
Description
BACTERICIDAL TREATMENT OF FOOD STORAGE CONTAINERS BY USING ELECTROCHEMICALLY ACTIVATED BACTERICIDAL AQUEOUS SOLUTION
TECHNICAL FIELD
This invention relates to bactericidal treatment of bio-film in food storage
containers. More particularly, the invention relates to bactericidal treatment
of bio-film in bulk food storage containers used for fresh produce.
BACKGROUND ART
One of the problems with all fresh produce is their perishable nature and
thus their limited shelf life. This is largely due to bacterial contamination
and putrefactive enzyme production by the bacteria. A primary source
of bacterial contamination is the bacterial bio-film that exists on the
inside of bulk storage containers, such as those used on fishing trawlers.
For purposes of this specification, the term "fresh produce" shall be
interpreted so as to include fresh foodstuff such as fish, chicken, meat,
meat carcasses, processed meat products, processed chicken products,
processed fish products and the like.
The use of bulk food storage containers for fresh fish such as those on
fishing boats and trawlers, often constituted by the hulls themselves,
travelling out to sea for lengthy periods on their fishing trips, is well
known. As the fish are caught they are stores typically in crushed ice
in the storage containers and hulls of trawlers and boats. Once
sufficient fish have been caught, the trawlers return to harbour where
the fish are off-loaded and processed. In many cases much of the
preliminary processing, such as "gutting", is done on board out at sea.
Through the storage of freshly caught fish in these hulls, the fish are
exposed to bacterial contamination from the bio-film and the gut residue,
thereby reducing the shelf life of the fish.
The use of other bulk food storage containers, such as those used on
road and rail transporters for fresh produce such as cattle and sheep
carcasses, is similarly well known. In these containers the bio-film on
the inside of the storage hulls originates also from blood and gut residue
as well as previously contaminated carcasses.
For purposes of this specification, the term "bulk food storage
containers" shall be interpreted so as to include containers used for
fresh produce such as fresh fish on trawlers, sheep and cattle carcasses
on road transporters, rail transporters and the like, and associated terms
shall be interpreted so as to have cognate meanings.
Further and for purposes of this specification, the term "transporter"
shall be interpreted so as to include fishing ships and trawlers, bulk road
and rail transporters for fresh produce and the like.
OBJECTIVES OF THE INVENTION
It is accordingly an object of the invention to increase the shelf life of
fresh produce in bulk food storage containers by overcoming or at least
minimising the above disadvantage.
DISCLOSURE OF INVENTION
According to a first aspect of the invention there is provided a method
for bactericidal treatment of bulk food storage containers for fresh
produce, the method including the step of treating a container with
electrochemically activated, bactericidal aqueous solution.
According to a second aspect of the invention there is provided fresh
produce, characterised in that it has been treated with electrochemically
activated, bactericidal aqueous solution during storage in a bulk food
storage container.
According to a third aspect of the invention there is provided a bulk food
storage facility, including a bulk food storage container, for fresh
produce, the facility being characterised in that it includes means for
producing electrochemically activated, bactericidal aqueous solution for
treating an internal surface of the container.
According to a fourth aspect of the invention there is provided a
transporter, having a bulk food storage container for transporting fresh
produce, the transporter being characterised in that it is provided with
means for producing electrochemically activated, bactericidal aqueous
solution.
The method may include the step of packing the fresh produce in ice in
the container, the ice being characterised in that it is made from an
electrochemically activated, bactericidal aqueous solution.
The transporter may be provided with means for providing the aqueous
solution in iced form.
The electrochemically activated, bactericidal aqueous solution may be
selected from the group consisting of mixed oxidant, anion-containing
aqueous solution and mixed reductant, cation-containing aqueous
solution.
The electrochemically activated, bactericidal aqueous solution may be
prepared by means of electrolysis of an aqueous solution of a salt. The
salt may be sodium chloride. In particular, it may be non-iodated sodium
chloride or potassium chloride.
The anion-containing solution and the cation-containing solution may be
produced by an electrochemical reactor or so-called electrolysis device,
having a through flow electrochemical cell with two co-axial cylindrical
electrodes, with a co-axial diaphragm between them so as to separate an
annular inter-electrode space into a catalytic and an analytic chamber. The
anion-containing solution is referred to hereinafter for brevity as the
"anolyte solution" or "anolyte" and the cation-containing solution is
referred to hereinafter for brevity as the "catholyte solution" or "catholyte".
The electrochemically activated, bactericidal aqueous solution may be
produced from an about 3 to 10% aqueous NaCI solution, electrolysed
to produce mixed reductant and mixed oxidant species. These mixed
oxidant and reductant species may be labile and after about 96 hours,
the various radical species may disappear with relatively no residues
being produced.
The anolyte solution may have a redox potential of about between
+ 450mV and + 1 200mV and a pH of between 2 and 9. The anolyte
solution may include mixed oxidant species such as CIO; CIO ; HCIO;
OH" ; HO2 ; H2O2 ; O3; S2O8 2 and CI2O6 2".
These species have been found to have a synergistic anti-bacterial
and/or anti-viral effect, which is generally stronger than that of chemical
bactericides and has been found to be particularly effective against viral
organisms and spore and cyst forming bacteria.
The catholyte solution generally may have a pH of between about 12 and
1 3 and a redox potential of between about -850mV and -900mV. The
catholyte solution may include mixed reductant species such as OH"; H3 ";
02; H2-; H02-; HO2 " and O2 ".
According to a fifth aspect of the invention there is provided equipment for
use in a method for bactericidal treatment of bulk storage containers for
fresh produce, the apparatus including an electrolysis device, having a
through flow electrochemical cell with two co-axial cylindrical electrodes,
with a co-axial diaphragm between the two electrodes so as to separate
an annular inter-electrode space into a catalytic and an analytic chamber.
Both the physical characteristics of the anolyte and the catholyte, such
as pH and redox potential, are adjustable so as to be suitable for a
particular application, such as type of produce, the atmospheric
conditions in the container and the like.
BEST MODES FOR CARRYING OUT THE INVENTION
A preferred embodiment of the invention will now be described as a non-
limiting example only.
Example 1 :
By using anolyte, it is envisaged that one can achieve an increased shelf
life for fish of up to 3 to 9 days. The proposed application of anolyte is
as follows:
(a) As ice for storage purposes; and
(b) As a method of eliminating the bio-film on the inside surfaces of
bulk storage containers such as those on fishing trawlers and
boats.
1 .1 Ice
By using anolyte in the form of ice in the storage of fish, the
bacterial contamination in the ice is eliminated as well as the
contamination of the packed fish. As the ice melts, the anolyte
is released to destroy the bacteria.
It is envisaged that the anolyte can be iced either as a concen
trate, or in a diluted state with water, varying in dilution from
50% to as low as 20% dilution. The dilution would depend
largely upon the contaminated state of the water used in the ice.
Some trawlers, for example, use seawater in their ice. Seawater
by nature is very contaminated.
The type of anolyte to be used in the ice is :
pH - ± 7.5;
Amps - 1 2 - 1 3 amps (24 volt);
ORP - ± 450 mV; and
Pressure - 0.5 bar (720ml/hr - production rate)
Bio Film:
Through applying anolyte as a fog within an empty storage
container of a trawler, one could eliminate the bio-film and thus
the risk of re-contamination of the fish during subsequent use.
The elimination of this bio-film will generally take place between
fishing trips, while the trawler is in the harbour with its storage
containers empty.
It is envisaged that various methods of application such as
fogging could be applied, as long as the droplet size of the fogged
anolyte is small (around 4 to 1 2 micrometers) and the contact
time is sufficient. Depending upon the extent of the bio-film, a
number of fogging sessions could be required.
Fogging time will also depend upon the size and volume of the
container and the output of the fogging apparatus. Generally, one
will fog until a thick fog has formed in the closed container and
the walls of the container have been sufficiently wet by the
anolyte fog so that droplets begin to form and run off (run-off
stage). The container would then be allowed to dry before being
fogged again.
It is envisaged that the type of anolyte to be used could be:
PH - ± 6.5;
Amps - 1 2 - 13 amps (24 volts);
ORP - ± 750mV; and
Pressure - 0.5 bar ( ± 750 ml/hr - output)
It is envisaged that it could be advantageous also to use anolyte
as a general disinfectant in the processing and putting of the fish,
of both the process facilities and equipment and the product itself.
Anolyte has very limited residue and thus an advantageous over
the other disinfectants on the market that are generally chemically
based.
Example 2 :
Multiple fogging cycles were used so as to determine the efficacy
thereof on the total bacterial surface loads in a series of chillers over a
42 hour chilling period.
Samples 1 , 2 and 3 were carcasses fogged separately in chillers
with 30 minute intervals. Samples 4 and 5 were carcasses sampled in
operating chillers. Foggers were put on the floor of the chillers and
carcasses were therefore not fogged directly. 3 x sampling was
conducted 42 hours after the previous fogging on all samples so as to
establish whether there would be an increase in bacterial loads over the
42 hours prior to de-boning.
Multiple fogging in areas where the fog is not mechanically removed from
the room during the fogging process is highly effective in reducing total
counts.
Fogging in operating chillers is not effective.
Throughout the trial Coliform counts were low, most probably due to
carcass washing and results therefore were not given.
Example 3:
Enclosed volumes containing diverse equipment, including 2 tables and
a scale, were fogged so as to determine the microcidal effect of anolyte
on the enclosure surfaces and the enclosed equipment. The results are
shown in the accompanying tables.
Example 4 :
Cattle carcasses were treated at the Agricultural Research Council Unit,
Irene, Gauteng, South Africa.
The anolyte used was generated under and with the following
characteristics :
Current : 1 0 Ampere; Voltage : 24 Volt
ORP : + 762 mV; TDS; 6,04 g/£
PH : 6,8
The chiller treated had volume (space) for about 1 6 carcasses. The
fogging process consisted of 3 cycles of 20 minutes each, with 10
minutes in between each cycle.
Samples were taken from the neck area, the breast area, the back area
and the hindquarter area.
Samples were taken of all micro-organisms by means of total plate count
( Redoc plates), total plate counts (petri film) and Coliforms (petri film).
The results are shown in the accompanying tables.
Example 5 :
A number of 800 lamb carcasses were subjected to tests, 400 being
fogged with anolyte and 400 being used as the control group. Samples
were taken before treatment, after a second cycle and a fourth cycle,
while the control group was sampled before and after 24 hours of
chilling.
Additional samples were taken from both the treated and the control
group for measuring TPC only.
The results are shown in the accompanying tables.
It will be appreciated that many variations in detail are possible without
departing from the scope and/or spirit of the invention as claimed in the
claims hereinafter.
Example 2: (New Style Pork)
Objective:
To determine the effect of multiple fogging on the total bacterial surface loads over a 42 hour chilling period.
Comments
1, 2 and 3 were fogged separately in chillers with 30 minutes intervals.
Chillers were not in operation. After fogging, carcasses were returned to original chillers.
Example 3 :
Microcidal Effect of Anolyte on Surfaces and Equipment
Example 4: (Calf Carcasses)
The test conditions were as follows: ANOLYTE : 10 Amp
24 volt
+ 762 mV ORP
6.04g/l TDS
6.8pH
Chiller capacity :
No. of carcass in chiller 16
Fogging: 3 x 20 min (10 min rest in between)
Samples taken: Neck area, breast are, back area, hindquarter area
Mico-organisms: Total plate count (Rodac plates)
Total plate counts (petri film)
Coliforms (petri film)
A. Trial Carcasses Direct fogging in chiller with interrupted air circulation during the fogging process
Comments:
The fourth Swab was on the side of the triceps cut where all carcasses had been pushed by hand and were therefore more contaminated than adjoining surfaces.
All swabs were incubated at 37° C for 48 hours Coliform counts were negligible on all carcasses
B. Negative Control Indirect fogging of carcasses that were present in the chiller, during the time of the experiment. Only final carcass counts on similar locations as the trials were taken.
Example 5:
Woolworths Trial 800 lamb carcasses
Results:
Treatment with Anolyte
Control group:
Further swabs were taken on the shoulder of 5 chilled and fogged carcases (after the 4th fogging).
Carcase # TPC
4BS1 1
4BS2 3
4BS3 0
4BS4 6
4BS5 6
Total 16
Mean/20cm2 3.2
Claims
1 . A method for bactericidal treatment of bulk food storage
containers for fresh produce, the method including the step of
treating a container with electrochemically activated, bactericidal
aqueous solution.
2. Fresh produce, characterised in that it has been treated with
electrochemically activated, bactericidal aqueous solution during
storage in a bulk food storage container.
3. A bulk food storage facility, including a bulk food storage
container for fresh produce, the facility being characterised in
that it includes means for producing electrochemically activated,
bactericidal aqueous solution for treating an internal surface of
the container.
4. A transporter, having a bulk food storage container for
transporting fresh produce, the transported being characterised in
that it is provided with means for producing electrochemically
activated, bactericidal aqueous solution.
. A method as claimed in claim 1 , including the step of packing the
fresh produce in ice in the container, the ice being characterised
in that it was made from the electrochemically activated,
bactericidal aqueous solution.
6. A bulk food storage facility as claimed I claim 3, characterised in
being provided with means for producing the aqueous solution in
iced form.
7. A method as claimed in claim 1 , wherein the aqueous solution is
selected from a group consisting of mixed oxidant, anion-
containing solution and mixed reductant, cation-containing
solution.
8. A method as claimed in claim 7 wherein the solution is produced
from an about 3 to 10% aqueous salt solution, electrolysed to
produce mixed reductant and mixed oxidant species.
9. A method as claimed in claim 8 wherein the salt solution is sodium
chloride or potassium chloride solution.
0. A method as claimed in claim 1 wherein the electrochemically
activated, bactericidal aqueous solution is anion-containing
solution is produced by an electrolysis device, having a through
flow electrochemical cell with two co-axial cylindrical electrodes,
with a co-axial diaphragm between the two electrodes so as to
separate an annular inter-electrode space into a catalytic and an
analytic chamber.
1 . A method as claimed in claim 8 wherein the species are labile and
wherein they, after about 96 hours, disappear with relatively no
residues being produced.
2. A method as claimed in claim 7 wherein the anion-containing
solution has a redox potential of between about + 450 mV and
+ 1 200 mV and a pH of between about 2 and 9.
3. A method as claimed in claim 7 wherein the anion-containing
solution includes mixed oxidant species selected from the group
consisting of CIO; CIO ; HCIO; OH ; HO2 " ; H2O2 ; O3; S2O8 2"
and CI2O6 2
4. A method as claimed in claim 7 wherein the cation-containing
solution has a pH of between about 7 and 1 3 and a redox
potential of between about -200 mV and -900 mV.
5. A method as claimed in claim 7 wherein the cation-containing
solution includes mixed reductant species selected from the group
consisting of OH"; H3 ~; O2; H2'; HO2'; HO2 " and O2 ~.
6. A method as claimed in claim 1 wherein the physical
characteristics of the anion-containing and the cation-containing
solution are adjustable so as to be suitable for the particular
application.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU59951/99A AU5995199A (en) | 1998-10-23 | 1999-10-18 | Bactericidal treatment of food storage containers by using electrochemically activated bactericidal aqueous solution |
| EP99970885A EP1123015A1 (en) | 1998-10-23 | 1999-10-18 | Bactericidal treatment of food storage containers by using electrochemically activated bactericidal aqueous solution |
| HK02103271.2A HK1041590A1 (en) | 1998-10-23 | 2002-05-02 | Bactericidal treatment of food storage containers by using electrochemically activated bactericidal aqueous solution |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA984418 | 1998-10-23 | ||
| ZA98/4418 | 1998-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000024275A1 true WO2000024275A1 (en) | 2000-05-04 |
Family
ID=25587024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB1999/001700 WO2000024275A1 (en) | 1998-10-23 | 1999-10-18 | Bactericidal treatment of food storage containers by using electrochemically activated bactericidal aqueous solution |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1123015A1 (en) |
| CN (1) | CN1330520A (en) |
| AU (1) | AU5995199A (en) |
| HK (1) | HK1041590A1 (en) |
| WO (1) | WO2000024275A1 (en) |
| ZA (1) | ZA996575B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045446A1 (en) * | 2001-10-12 | 2003-06-05 | Radical Waters (Ip) (Pty) Limited | Method for the management and/or treatment of microbially contaminated environments and the use of a new class of microbicidal reagents in such management |
| WO2006126039A1 (en) | 2005-05-25 | 2006-11-30 | Xavier Van Den Avenne | Method for treating agricultural products of vegetable origin and the side-products and/or derivatives obtained by treatment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU747828A1 (en) * | 1978-06-02 | 1980-07-15 | Предприятие П/Я А-1097 | Apparatus for drinking water purification |
| SU1752401A1 (en) * | 1986-10-20 | 1992-08-07 | Специализированное Монтажно-Наладочное Управление Государственного Комитета Узсср По Промышленному Птицеводству | Method for treatment eggs of agriculture poultry |
| JPH06237747A (en) * | 1993-02-18 | 1994-08-30 | Hoshizaki Electric Co Ltd | Production of treating solution for sterilization and production device therefor |
| JPH07218062A (en) * | 1994-01-28 | 1995-08-18 | Okamoto:Kk | Preparation and device for electrolytic acidic ion ice and electrolytic acidic water |
| RU2045480C1 (en) * | 1992-04-14 | 1995-10-10 | Николай Иванович Ряснов | Method of preparing activated liquid medium |
| JPH08323307A (en) * | 1995-03-29 | 1996-12-10 | Toto Ltd | Appliance washing device |
| JPH09187770A (en) * | 1995-10-30 | 1997-07-22 | Tadamasa Nakamura | Method for forming electrolyzed water and its apparatus |
| EP0802164A1 (en) * | 1995-11-08 | 1997-10-22 | Morinaga Engineering Co., Ltd. | Process for producing bactericide, apparatus therefor, and bactericide |
| US5858202A (en) * | 1996-01-30 | 1999-01-12 | Zenkoku-Mokko-Kikai-Kan, Inc. | Method for producing electrolytic water and apparatus for producing the same |
-
1999
- 1999-10-18 EP EP99970885A patent/EP1123015A1/en not_active Withdrawn
- 1999-10-18 WO PCT/IB1999/001700 patent/WO2000024275A1/en not_active Application Discontinuation
- 1999-10-18 ZA ZA9906575A patent/ZA996575B/en unknown
- 1999-10-18 AU AU59951/99A patent/AU5995199A/en not_active Abandoned
- 1999-10-18 CN CN99814409A patent/CN1330520A/en active Pending
-
2002
- 2002-05-02 HK HK02103271.2A patent/HK1041590A1/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU747828A1 (en) * | 1978-06-02 | 1980-07-15 | Предприятие П/Я А-1097 | Apparatus for drinking water purification |
| SU1752401A1 (en) * | 1986-10-20 | 1992-08-07 | Специализированное Монтажно-Наладочное Управление Государственного Комитета Узсср По Промышленному Птицеводству | Method for treatment eggs of agriculture poultry |
| RU2045480C1 (en) * | 1992-04-14 | 1995-10-10 | Николай Иванович Ряснов | Method of preparing activated liquid medium |
| JPH06237747A (en) * | 1993-02-18 | 1994-08-30 | Hoshizaki Electric Co Ltd | Production of treating solution for sterilization and production device therefor |
| JPH07218062A (en) * | 1994-01-28 | 1995-08-18 | Okamoto:Kk | Preparation and device for electrolytic acidic ion ice and electrolytic acidic water |
| JPH08323307A (en) * | 1995-03-29 | 1996-12-10 | Toto Ltd | Appliance washing device |
| JPH09187770A (en) * | 1995-10-30 | 1997-07-22 | Tadamasa Nakamura | Method for forming electrolyzed water and its apparatus |
| EP0802164A1 (en) * | 1995-11-08 | 1997-10-22 | Morinaga Engineering Co., Ltd. | Process for producing bactericide, apparatus therefor, and bactericide |
| US5858202A (en) * | 1996-01-30 | 1999-01-12 | Zenkoku-Mokko-Kikai-Kan, Inc. | Method for producing electrolytic water and apparatus for producing the same |
Non-Patent Citations (7)
| Title |
|---|
| DATABASE WPI Section Ch Week 198113, Derwent World Patents Index; Class A97, AN 1981-22787D, XP002130880 * |
| DATABASE WPI Section Ch Week 199333, Derwent World Patents Index; Class D13, AN 1993-263108, XP002130881 * |
| DATABASE WPI Section Ch Week 199439, Derwent World Patents Index; Class D13, AN 1994-312796, XP002130883 * |
| DATABASE WPI Section Ch Week 199624, Derwent World Patents Index; Class B06, AN 1996-237818, XP002130882 * |
| PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) * |
| PATENT ABSTRACTS OF JAPAN vol. 1997, no. 04 30 April 1997 (1997-04-30) * |
| PATENT ABSTRACTS OF JAPAN vol. 1997, no. 11 28 November 1997 (1997-11-28) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045446A1 (en) * | 2001-10-12 | 2003-06-05 | Radical Waters (Ip) (Pty) Limited | Method for the management and/or treatment of microbially contaminated environments and the use of a new class of microbicidal reagents in such management |
| WO2006126039A1 (en) | 2005-05-25 | 2006-11-30 | Xavier Van Den Avenne | Method for treating agricultural products of vegetable origin and the side-products and/or derivatives obtained by treatment |
| BE1016598A5 (en) * | 2005-05-25 | 2007-02-06 | Den Avenne Xavier Van | METHOD FOR TREATING AGRICULTURAL PLANTS |
| AU2005332208B2 (en) * | 2005-05-25 | 2011-09-08 | Xavier Van Den Avenne | Method for treating agricultural products of vegetable origin and the side-products and/or derivatives obtained by treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1041590A1 (en) | 2002-07-12 |
| EP1123015A1 (en) | 2001-08-16 |
| AU5995199A (en) | 2000-05-15 |
| ZA996575B (en) | 2000-04-19 |
| CN1330520A (en) | 2002-01-09 |
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