EP4178361A1 - Composition pour la production de co2, utilisation d'une composition pour la production de co2, et procédé de production de co2 - Google Patents

Composition pour la production de co2, utilisation d'une composition pour la production de co2, et procédé de production de co2

Info

Publication number
EP4178361A1
EP4178361A1 EP21739097.0A EP21739097A EP4178361A1 EP 4178361 A1 EP4178361 A1 EP 4178361A1 EP 21739097 A EP21739097 A EP 21739097A EP 4178361 A1 EP4178361 A1 EP 4178361A1
Authority
EP
European Patent Office
Prior art keywords
component
yeast
composition
yeast strain
production
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.)
Pending
Application number
EP21739097.0A
Other languages
German (de)
English (en)
Inventor
Martin Geier
Andreas Rose
Maximilian Epple
Scott Gordon
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.)
Biogents AG
Original Assignee
Biogents AG
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 Biogents AG filed Critical Biogents AG
Publication of EP4178361A1 publication Critical patent/EP4178361A1/fr
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P1/00—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes
    • C12P1/02—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes by using fungi
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/02—Stationary means for catching or killing insects with devices or substances, e.g. food, pheronones attracting the insects
    • A01M1/023—Attracting insects by the simulation of a living being, i.e. emission of carbon dioxide, heat, sound waves or vibrations
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/06—Catching insects by using a suction effect
    • 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
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/04—Carbon disulfide; Carbon monoxide; Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12F—RECOVERY OF BY-PRODUCTS OF FERMENTED SOLUTIONS; DENATURED ALCOHOL; PREPARATION THEREOF
    • C12F3/00—Recovery of by-products
    • C12F3/02—Recovery of by-products of carbon dioxide

Definitions

  • composition for producing CO 2 Use of a composition for producing CO 2 and method for
  • the present invention relates to a composition for producing CO2, the use of a composition for producing CO2 and a method for producing CO2 according to the features of the independent claims.
  • Blood-sucking insects often use olfactory and/or visual stimuli to track down humans or animals. It is particularly problematic that blood-sucking insects often transmit diseases, which is why attempts are made to keep these insects away from human dwellings and/or crowds. You can either rely on defense, for example by using chemical insect repellents. Alternatively, different insect traps are used to capture blood-sucking arthropods. Such insect traps often work with olfactory and/or optical attractants.
  • the published application WO 99/26471 A1 describes an insect trap in which baker's yeast is used in a nutrient solution in order to produce a continuous release of carbon dioxide.
  • the object of the invention is to generate carbon dioxide particularly easily, inexpensively and quickly, in particular for use in or with insect traps.
  • composition of the invention includes
  • a component a) with at least one first yeast strain which at least one first yeast strain has a low tolerance of less than 100 g alcohol per liter
  • a component b) with at least one second yeast strain which at least one second yeast strain has a high tolerance of more than 100 g alcohol per liter
  • a component c) comprising at least one nutrient source for the at least one first yeast strain and/or for the at least one second yeast strain, component c) being formed by a turbo yeast or by a yeast extract.
  • the at least one first yeast strain contained in component a) is optimized for the production of carbon dioxide, with the production of carbon dioxide by the first yeast strain preferably taking place particularly uniformly.
  • component a) is formed by baker's yeast, which is optimized in particular to produce a large amount of carbon dioxide in the absence of air and in a short time.
  • This can be present in the composition in moist form, for example as pressed fresh yeast, as liquid yeast or as active dry yeast.
  • commercially available baker's yeast always contains minerals such as potassium, phosphorus, magnesium, calcium, etc., which originate in particular from the nutrient medium in which the yeast cells were cultivated.
  • the CO2 production of baker's yeast starts essentially immediately after the Mixing of the baker's yeast with a carbohydrate solution and essentially increases continuously and evenly in the event of a carbohydrate excess.
  • Component b) preferably comprises at least one so-called calcining yeast, a brewer's yeast and/or a wine yeast, which in particular has an alcohol tolerance of between 110 grams per liter and 120 grams per liter.
  • Component b) can preferably be formed by a so-called turbo yeast.
  • turbo yeast Such so-called. Turbo lifting are marketed specifically for the brewery.
  • the term “turbo yeast” used here is a collective term and describes a mixture of yeast and yeast food.
  • the term “turbo yeast” therefore does not refer to a certain yeast, but to a mixture of yeast, for example pure culture yeast, and complex yeast nutrition.
  • such a turbo yeast consists of 58% caustic yeast, 20% carbamide, 16% phosphates, 3% sulfates, 2% carbonates, and 1% vitamins and trace elements.
  • turbo yeasts contain at least one yeast strain that tolerates at least 14% alcohol, sometimes the turbo yeasts tolerate up to 20% alcohol or even more. Turbo yeasts are optimized so that a lot of alcohol is ultimately produced. However, when using turbo yeast alone, the production of carbon dioxide only starts with a delay.
  • the first yeast strain and/or the second yeast strain are osmotolerant and can tolerate relatively high initial concentrations of sugar.
  • all of the sugar serving as a carbohydrate source can be added directly at once and the yeast does not have to be fed carbohydrates several times in order to maintain the appropriate CO2 production over a desired period of time.
  • first yeast strain and/or the second yeast strain can not only metabolize simple sugars such as fructose and glucose, but in particular can also metabolize ordinary, cheap household sugar with the same speed.
  • first yeast strain and/or the second yeast strain also use other carbohydrate sources such as flour or the like quickly and effectively can metabolize, for example malt flour, grain flour, corn flour or flour from other suitable starch sources such as tapioca, yams, cassava or the like.
  • component c) is formed by a turbo yeast.
  • the commercially available turbo yeasts additionally comprise at least one nutrient source for this yeast strain.
  • An embodiment of the composition can thus provide that the composition is formed from a first part baker's yeast and a second part turbo yeast.
  • equal parts of baker's yeast and turbo yeast can be used.
  • the composition may advantageously contain more baker's yeast or more turbo yeast.
  • component c) is formed by a yeast extract.
  • Yeast extract is a concentrate of the soluble components of yeast cells.
  • Yeast extract contains a high proportion of proteins, amino acids, nucleotides and vitamins from the B group.
  • Yeast extract is made from mainly protein-rich, specially cultivated yeast species (pure cultured yeast). These yeasts are broken down, releasing the cell sap.
  • the yeast's own proteases and hydrolases then hydrolyze the cell contents, breaking down proteins into peptides and amino acids, DNA and RNA into nucleotides.
  • the yeast's own enzymes can be supplemented by adding nucleases.
  • the initially liquid auto- or hydrolyzate is then freed from the insoluble cell components, filtered, concentrated and, if necessary, spray-dried, so that a dry matter content of 70-80% for pasty yeast extract and 95-97% for powder is achieved.
  • components a:b:c are each in freeze-dried form, for example the composition thus comprises commercially available freeze-dried baker's yeast, commercially available freeze-dried turbo yeast and commercially available freeze-dried yeast extract.
  • the components a:b:c are present in the composition in a quantity ratio or weight ratio of 1-10:1-10:1-10.
  • a quantity ratio or weight ratio of 2:1:1 or 1:2:1 or 1:1:2 is preferred.
  • the proportions given apply in particular if all three components are preferably in freeze-dried form be used.
  • Corresponding proportions apply when using the components in fresh form with a moisture content or when using at least one component in freeze-dried form and one component in fresh form with a moisture content. If necessary, the proportions must be adjusted to take this into account accordingly.
  • composition described above can always be used to advantage if CO2 is required over a longer period of time. More preferably, the composition is used to produce CO2 for use in an insect trap, particularly an insect trap for attracting blood-sucking insects and arthropods. In particular, the composition makes it possible to produce carbon dioxide continuously over a longer period of time. In addition, cumulatively higher amounts of CO2 are generated than if the individual yeast strains are used individually in the corresponding amounts.
  • an aqueous solution is prepared from a carbohydrate source and a composition described above.
  • simple sugars such as fructose and glucose serve as a source of carbohydrates, alternatively more complex sugars such as sucrose.
  • ordinary, cheap household sugar or other carbohydrate sources such as flour or the like, for example malt flour, cereal flour, corn flour or flour from other suitable starch sources such as tapioca, yams, manioc or the like can be provided.
  • the aqueous solution produced according to the method is characterized in that carbon dioxide is released continuously over a period of at least 12 hours, in particular after an initial starter phase.
  • significantly higher amounts of carbon dioxide are generated here than when using the individual components a, b, c in a correspondingly adjusted dosage.
  • the duration of the starter phase is preferably a maximum of one hour
  • an aqueous solution is created from a carbohydrate source and a composition described above.
  • Such an aqueous solution gives off CO2 continuously over a period of several hours, in particular over a period of at least 12 hours.
  • the amounts of carbohydrate source and composition are chosen such that the mixture continuously emits carbon dioxide for at least 24 hours or even at least 48 hours.
  • Another preferred mixture of carbohydrate source and composition according to the invention in an aqueous solution is suitable for achieving a continuous release of carbon dioxide, and after the end of an initial starter phase, a release of carbon dioxide that is continuous and as uniform as possible over a period of one to two weeks.
  • the carbohydrate source can be formed, for example, by a monosaccharide, in particular glucose or fructose.
  • the carbohydrate source is particularly preferably formed by a disaccharide, in particular sucrose.
  • conventional household sugar can be used, which makes it possible to produce CO2 particularly cost-effectively.
  • One embodiment provides that water at a temperature between 30 and 40 degrees Celsius is used to produce the aqueous solution, in particular water at a temperature between 33 and 38 degrees Celsius, particularly preferably water at a temperature of 35 degrees Celsius. This represents an optimal temperature for the heaths and causes carbon dioxide production to start quickly.
  • a particularly preferred embodiment provides that, to produce the aqueous solution, 500 grams of sugar and 20 grams of the composition are mixed in 2 liters of water, which preferably has a temperature of 35 degrees Celsius.
  • the composition is preferably supplemented by 10 grams of component a); 5 grams of component b) and 5 grams of component c).
  • a composition of 10 grams of commercially available baker's yeast, 5 grams of commercially available turbo yeast and 5 grams of commercially available yeast extract is particularly preferred.
  • composition described can advantageously be used both with active insect traps and with passive insect traps.
  • Active insect traps are understood to mean, for example, insect traps equipped with a blower, in which the attracted insects are sucked into a collection bag.
  • Passive insect traps are, for example, those in which the attracted insects get caught on an adhesive surface or similar or end up in catch containers from which they cannot escape.
  • the corresponding aqueous solution can be prepared in any suitable container, which can be arranged adjacent to the insect trap and, for example, has an outlet via which the carbon dioxide can be introduced to or into the insect trap in a targeted manner.
  • a connecting hose is attached to the container outlet so that the carbon dioxide is released at a defined point on or in the insect trap.
  • An embodiment can provide for the use of the composition for the production of carbon dioxide in special reaction bags.
  • a reaction bag preferably made of a thin plastic material and further a closure arrangement with a lid.
  • the cover can preferably have a receiving or fastening device for a connecting hose. The carbon dioxide generated in the reaction bag is fed to an insect trap via the connecting hose.
  • such insect traps are advantageously used in studies to catch flying insects and/or pest insects overnight and then count and/or categorize them.
  • the carbon dioxide can be introduced into the insect trap via the connecting hose and then released again by the insect trap.
  • the free end of the connecting hose can also be positioned adjacent to an insect trap, so that the carbon dioxide flows out in the immediate vicinity of the insect trap and accordingly serves to attract the insects.
  • the reaction bag is equipped with a carrying handle in order to be able to transport it better and more easily, especially when it is filled.
  • An aqueous mixture of a carbohydrate source and the composition of the present invention can be prepared directly by adding the water, carbohydrate source and composition to the reaction bag.
  • it can be provided, for example, that an additional cover without a receiving opening is provided so that the reaction bag can be tightly closed for a short time after the components of the mixture have been filled in for mixing them.
  • the components can also be mixed outside of the reaction bag and the mixture filled into the same.
  • reaction bags are preferably made for the reaction bags to be used several times. In particular, this can be refilled again and again with an appropriate mixture of water, carbohydrate and composition according to the invention.
  • the reaction bag can also be equipped with a temperature display, for example with a temperature measuring strip.
  • a temperature display for example with a temperature measuring strip.
  • this preferably has a plurality of temperature indicators, so that the temperature on the surface of the reaction bag can be measured, as a result of which appropriate conclusions can be drawn about the temperatures prevailing inside the reaction bag.
  • the temperature indicators consist of substances that perform a reversible color change at certain temperatures, so that the reaction bags equipped with a temperature display can preferably be used several times.
  • reaction bag can be placed in a thermal container after it has been filled with the appropriate mixture of water, carbohydrate source and composition, in order to ensure an optimum reaction temperature and to prevent the effect of the outside temperature on the CO2 production.
  • the arrangement of the reaction bag in a thermal container is also advantageous if it cools down significantly overnight, since the growth and thus the metabolism of the yeasts is significantly slowed down at cold temperatures, especially at temperatures below 30 degrees Celsius, which is reflected in the yields reflecting carbon dioxide.
  • a further embodiment can provide that a bubble counter can be integrated into the connecting line in order to measure the flow rate of carbon dioxide. This can be particularly advantageous in the context of research projects for the precise analysis of the test conditions.
  • composition according to the invention a CO 2 production that is optimized in terms of continuity, quantity and uniformity of the CO 2 release is achieved.
  • the composition comprising at least two different yeast strains is characterized by a higher CO2 yield compared to the use of the pure first yeast strain.
  • the composition is characterized in particular by the fact that the production of CO2 starts much faster.
  • a continuous and essentially uniform CO 2 production can be achieved over different desired periods of time, in particular over periods of several days can be reached in up to one to two weeks.
  • the composition can be produced inexpensively, since, for example, smaller amounts of the generally more expensive component b are contained in the mixture than of the generally cheaper component.
  • the CO 2 can be produced much more cost-effectively than when using corresponding amounts of dry ice or CO 2 compressed in a gas cylinder.
  • Another advantage is the easy disposal of the mixture. Since this is a mixture of water, alcohol and yeast, it can be easily disposed of without having to follow any special regulations.
  • Figure 2 shows a reaction bag for producing carbon dioxide.
  • Figure 3 shows the use of the composition in an insect trap.
  • Figure 1 shows graphically the amounts of carbon dioxide produced by an inventive composition.
  • the X-axis represents the cultivation period in hours and minutes.
  • the Y-axis represents the CO2 production in liters.
  • an aqueous carbohydrate solution was prepared, each containing a defined amount of an individual component a), b) or c) the composition or mixed with a defined amount of the composition.
  • the CO2 production was then measured in liters over a cultivation period of 24 hours and the measured values presented graphically.
  • Curve A shows the CO2 production when using a defined quantity X of an instant baking yeast.
  • Curve B shows the CO2 production when using a defined amount X of a so-called turbo yeast.
  • Curve C shows the CO2 production using a defined amount X of a yeast extract and curve Z shows the CO2 production using a defined amount X of a composition comprising 0.5X instant baker's yeast; 0.25X Turbo Yeast and 0.25X Yeast Extract.
  • Curve A clearly shows that baker's yeast is particularly optimized to produce large amounts of carbon dioxide in a short time and in the absence of air.
  • the CO2 production of the baker's yeast starts essentially immediately after the admixture of the baker's yeast to the carbohydrate solution and increases essentially continuously and evenly over the period of 24 hours.
  • Turbo yeast is a mixture of a yeast and a yeast food that is optimized for the production of alcohol and has an alcohol content of tolerate at least 14%.
  • a turbo yeast consists of 58% caustic yeast, 20% carbamide, 16% phosphates, 3% sulfates, 2% carbonates, and 1% vitamins and trace elements
  • curve C shows the CO2 production when using a yeast extract as component c).
  • This is dead yeast cell material, which, depending on the manufacturer, is more or less broken down, but usually does not contain any active yeast cells.
  • the slight CO2 production that begins after about eight hours can be explained by the fact that the carbohydrate solution and the addition of the yeast extract were not sterile.
  • organisms from the environment, such as air get into the nutrient solution formed by the yeast extract.
  • the organisms multiply in the nutrient solution and also produce CO2 through normal cell respiration.
  • the work was not carried out under sterile conditions, since when the composition is used with insect traps, work is not or cannot generally be carried out in a sterile manner.
  • curve Z showing CO2 production using a composition of 0.5 parts instant baker's yeast; 0.25 parts turbo yeast and 0.25 parts yeast extract shows that the CO2 production starts immediately with the composition and after about an hour already enters the linear range.
  • the composition in particular in the first twelve hours, significantly higher amounts of CO2 can be generated continuously and essentially uniformly than when baker's yeast alone is used (curve A).
  • the CO2 production in the first twelve hours is also optimized compared to the sole use of turbo yeast (curve B), since the CO2 production only starts with a delay.
  • FIG. 2 shows a reaction bag 1 for the production of carbon dioxide by means of the composition described above.
  • the reaction bag 1 is preferably made of a thin plastic material.
  • the reaction bag 1 also has a closure arrangement 2 with a lid 3 . This is preferably a screw cap 4 that includes a receiving opening 5 for a connecting tube 6 (cf. FIG. 3).
  • reaction bag 1 can be equipped with a carrying handle 7 in order to be able to transport the reaction bag 1 better and more easily, in particular when it is filled.
  • the aqueous mixture of a carbohydrate source, in particular sugar, and the composition according to the invention can be produced directly in the latter by filling the reaction bag 1 with water, sugar and composition and mixing them together therein.
  • an additional cover without a receiving opening is made available so that the reaction bag 1 can be tightly sealed for a short time after the components of the mixture have been filled in for mixing them.
  • the components can also be mixed outside of the reaction bag 1 and the mixture can then be filled into the reaction bag 1 .
  • reaction bag 1 can be used several times.
  • the reaction bag 1 can be refilled again and again with an appropriate mixture of water, carbohydrate source and composition.
  • reaction bag 1 can also be equipped with a temperature display 8, for example with a temperature measuring strip 9.
  • this temperature measuring strip 9 preferably has a number of temperature indicators, so that the temperature on the surface of the reaction bag 1 can be measured, which allows conclusions to be drawn about the temperature inside the reaction bag 1 prevailing temperatures can be drawn.
  • the temperature indicators consist of substances that perform a reversible color change at certain temperatures, so that the reaction bag 1 equipped with a temperature display 8 can preferably be used several times.
  • Figure 3 shows the use of the composition according to the invention for the production of carbon dioxide for an insect trap 10.
  • insect trap 10 for attracting and / or catching flying and / or pest insects 30 such as mosquitoes, mosquitoes, yellow fever gnats , Zika mosquito, tiger mosquito or other blood-sucking insects, such as blood-sucking bugs, blood-sucking flies, fleas, lice, midges, sand flies etc. etc.
  • the insect trap 10 has an upper circular suction opening 11, which continues into a cylindrical suction channel 12 leading vertically downwards, in which there is an air flow that acts on the suction opening 11 with negative pressure or with a suction flow 13, which flows to an interior space 14 of the insect trap 10 or leads into it.
  • the insect trap 10 is equipped with an outer wall 15 in the shape of a truncated cone, which has a surface that is at least partially permeable to the outflowing air 16, formed in particular by a net-like structure 17 whose mesh size is large enough for a sufficient outflowing air flow 16 to be able to pass through there however, reliably prevents the insects 30 trapped in the interior 14 of the trap 10 from escaping.
  • the outer wall 15 encloses the intake duct 12 in the vicinity of the intake opening 11 and envelops the intake duct 12 in the wider region that continues downwards at a varying radial distance, so that the outer wall 15 widens conically downwards.
  • the insect trap 10 is equipped with a bottom side 18 that adjoins the outer wall 15 and is largely impermeable to air flowing in or out and is opposite the suction opening 11, which is spaced from an open lower end face 19 of the suction channel that extends into the interior 14 of the insect trap 10 12.
  • the bottom side 18 is in shown embodiment of the insect trap 10 flat and cylindrical, so that it is aligned perpendicular to the longitudinal axis of the intake port 12.
  • At least one blower 20 generating the suction flow 13 can be arranged inside the intake duct 12 .
  • the suction flow 13 has an air velocity that makes it significantly more difficult for the insects 30 that have been attracted to escape in the vicinity of the suction opening 11 . Rather, they should be sucked into the interior 14 of the trap 10 with the aid of the sufficiently strong suction flow 13 and reliably prevented from flying back out of the interior 14 there.
  • Suitable means for retaining or killing the trapped insects 30 can be arranged within the trap 10, but these are not shown here.
  • the insect trap 10 can be mounted hanging or standing, so that the suction opening 11 is directed upwards and the suction channel 12 preferably runs in an approximately vertical direction, and the bottom side 18 forms a lower horizontal end of the trap 10 .
  • the outflowing air 16 already represents an attraction for the insects.
  • the outflowing air is additionally enriched with carbon dioxide by introducing carbon dioxide into the insect trap 10 via a corresponding supply. This mixes within the insect trap 10 with the air sucked in by the suction flow 13 and flows out of the insect trap via the outer wall 15 .
  • a reaction bag 1 is filled with an aqueous solution comprising a sugar as a carbohydrate source and the composition according to the invention described in the application.
  • a free end of a connecting tube 6 is inserted into the reaction bag 1 via the receiving opening 5 and attached to the reaction bag 1 .
  • the other free end of the connecting tube 6 is attached to a corresponding receiving opening 21 of the insect trap 10 .
  • the carbon dioxide produced within the reaction bag 1 is introduced into the insect trap 10 through the connecting hose 6 and discharged out of the insect trap 10 again with the outflowing air 16 via the outer wall 15, as a result of which it can exert its attractive effect on the flying and/or pest insects 30 .
  • insect traps 10 are advantageously used in studies to catch flying and/or pest insects 30 overnight.
  • the flying and/or pest insects 30 are then counted and categorized as part of the study.
  • the steady production of carbon dioxide starts after about an hour.
  • the preparations for the insect trap 10 should ideally begin about an hour before the start of the count.
  • the reaction bag 1 can also be placed in a thermal container 25 .
  • An optimum reaction temperature can be ensured in the thermal container 25 . In particular, this prevents the outside temperature from having an effect on CO2 production.
  • reaction bag 1 in a thermal container 25 is also advantageous if it cools down considerably overnight, for example, since the growth and thus the metabolism of the yeasts is significantly slowed down at cold temperatures, in particular at temperatures below 30 degrees Celsius, which is reflected accordingly in a reduction in CO2 production.
  • a bubble counter 27 can be integrated into the connecting line 6 in order to measure the flow rate of carbon dioxide.
  • composition according to the invention CO2 production is achieved which is optimized with regard to the continuity, quantity and uniformity of the CO2 release.
  • the respectively optimized properties of the different yeast strains can be combined in a meaningful way.
  • the composition is characterized by a higher CO2 yield compared to the use of pure baker's yeast.
  • the composition is characterized in particular by the fact that the production of CO 2 starts much more quickly and, in particular, goes into the linear, uniform production range much more quickly.
  • continuous and essentially uniform CO 2 production can be achieved over different desired periods of time, can be achieved in particular over periods of several days up to one to two weeks.
  • the composition can be produced inexpensively, since the composition contains, for example, smaller amounts of turbo yeast in comparison to baker's yeast, which can be obtained more cheaply. With the composition, the CO 2 can be produced much more cost-effectively than when using corresponding amounts of dry ice or CO 2 compressed in a gas cylinder.
  • Another advantage is the easy disposal of the mixture. Since this is a mixture of water, alcohol and yeast, it can be easily disposed of without having to follow any special regulations.

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  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • General Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Inorganic Chemistry (AREA)
  • Mycology (AREA)
  • Biotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

L'invention concerne une composition pour la production de CO2, l'utilisation d'une composition pour la production de CO2 pour un piège à insectes, plus particulièrement pour un piège à insectes destiné à attirer des insectes et des arthropodes hématophages, et un procédé de production de CO2. La composition consiste en un composant a), un composant b) et un composant c). Le composant a) comprend au moins une première souche de levure, qui présente une faible tolérance inférieure à 100 g d'alcool par litre. Le composant b) comprend au moins une deuxième souche de levure, qui présente une tolérance élevée supérieure à 100 g d'alcool par litre. Le composant c) comprend au moins une source de nutriment pour ladite au moins une première souche de levure et/ou pour ladite au moins une deuxième souche de levure, le composant c) étant formé par une turbo-levure ou par un extrait de levure.
EP21739097.0A 2020-07-07 2021-07-01 Composition pour la production de co2, utilisation d'une composition pour la production de co2, et procédé de production de co2 Pending EP4178361A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20184435.4A EP3935945A1 (fr) 2020-07-07 2020-07-07 Composition destinée à la fabrication de co2, utilisation d'une composition pour la fabrication de co2 et procédé de fabrication de co2
PCT/EP2021/068132 WO2022008333A1 (fr) 2020-07-07 2021-07-01 Composition pour la production de co2, utilisation d'une composition pour la production de co2, et procédé de production de co2

Publications (1)

Publication Number Publication Date
EP4178361A1 true EP4178361A1 (fr) 2023-05-17

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EP20184435.4A Withdrawn EP3935945A1 (fr) 2020-07-07 2020-07-07 Composition destinée à la fabrication de co2, utilisation d'une composition pour la fabrication de co2 et procédé de fabrication de co2
EP21739097.0A Pending EP4178361A1 (fr) 2020-07-07 2021-07-01 Composition pour la production de co2, utilisation d'une composition pour la production de co2, et procédé de production de co2

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US4907366A (en) 1989-09-27 1990-03-13 Balfour Robert S Mosquito control
IL122306A0 (en) 1997-11-26 1998-04-05 Trapomoss Ltd Insect trap
BR112014029572A2 (pt) * 2012-05-31 2017-06-27 Cargill Inc processo de fermentação alcoólica na presença de uma levedura tolerante ao alto teor de álcool e uma levedura positiva de maltotriose
DE102012108621B4 (de) * 2012-09-14 2017-01-12 BIOCARE Gesellschaft für biologische Schutzmittel mbH Locksysteme für Schädlinge und deren Verwendung
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