KR20180005947A - Composition for controlling harmful algae, and method for controlling harmful algae using the same - Google Patents

Abstract

The present invention relates to a composition for controlling harmful algae, the composition comprising a mineral mixture, and a method of controlling the harmful algae using the composition. The present invention relates to the composition for controlling the harmful algae, the composition containing the mineral mixture and one or more selected from citric acid, nonanoic acid, an extract of Rumex, an extract of Rheum and cashew nut oil, and the method of controlling the harmful algae using the composition. The composition according to the present invention has an advantage that the composition can be usefully used in rational management of the aquatic ecosystem within a range that vegetation is not greatly destroyed by selectively controlling in advance the growth of target harmful algae to be controlled by using different reactivities for an appropriate pH range and compounds in growth of algae, and by promoting the growth of the algae such as green algae having a low reactivity to weaken concurrence force of the harmful algae, thereby inducing the harmful algae such that density of the harmful algae is suppressed naturally and consistently. Further, the composition according to the present invention has advantages that the composition not only further reduces side effects on the environment by enabling small quantities of compounds to be injected instead of performing a single process since the composition has synergistic algicidal activities on the harmful algae such as blue-green algae and the like, but also can be applied to the production of high quality biomasses of the algae since the composition can be used at an area which is required to prevent damages due to contamination of the harmful algae when useful specific algae are cultivated indoors and outdoors.

Description

TECHNICAL FIELD The present invention relates to a composition for controlling harmful algae, and a method for controlling harmful algae using the composition.

The present invention relates to a composition for controlling harmful algae comprising a mineral complex and a method for controlling harmful algae using the composition, and more particularly, to a composition for controlling harmful algae comprising a mineral mixture; And citric acid (Citric acid), no nano acid (Nonanoic acid), curly dock in (Rumex) extract and rhubarb in (Rheum) extract, one or more selected from cashew nut oil; And a method for controlling harmful algae using the same.

HABs (Harmful Algal Blooming) cause the death or the off-flavor of aquatic organisms in their growing habitat and reduce the quality of drinking and aquaculture (Duke et al., Weed Sci. 50: 138-151, 2002). (Haider et al., Chemosphere 52: 1-21, 2003), which produces harmful toxins (microcystins, nodularin, anatoxin and saxitoxin) It can hinder industrial activities or increase the cost of water treatment, resulting in huge economic losses. For this reason, the development of technologies for suppressing harmful birds has been tried for a long time, but it has not been solved yet. In Korea, it is a social issue every year. In addition, since it is very difficult to establish and operate countermeasures for thorough reduction of nutrients in terms of industrial activities, it is presumed that the problem of harmful algae will continue to arise in the future.

In the meantime, various physical, chemical and biological control technologies have been introduced to suppress harmful algal blooms, but new changes are needed in terms of development strategies. In other words, in the past, technologies that can be applied after the outbreak of algae (post-treatment technology) and the concept of eliminating or killing all birds unconditionally or non-selectively have been tried. Lethal toxicity, and destruction of ecological environment. However, in the future society, it is necessary to apply the technology to selectively remove harmful algae or to control the growth of other algae more precisely because securing safer water resources and protection of ecological environment is emphasized in future.

In addition to the technical limitations of the existing technologies, the future society is emphasizing more secure water resources and protection of the ecological environment. Therefore, future algal control technology is a comprehensive application of new technologies that can selectively control only harmful birds. It is necessary situation.

In order to develop technologies that meet these requirements, 1) it is necessary to lower the density of harmful algae in the natural environment. In order to do this, it is necessary to treat compounds capable of selectively controlling harmful algae, And to find ways to significantly reduce the occurrence and spread of harmful algae. 2) In the case of a compound capable of selectively controlling harmful algae at this time, a natural or biochemical agent which is considered to be relatively easy to decompose rather than a synthetic compound is exploited and utilized, and 3) a combination of compounds having a synergistic effect (4) It is possible to treat algae efficiently from the beginning by treating the harmful algae before the occurrence of harmful algae (if the algae density is low, the amount of the compound It is also necessary to develop a technology that can reduce secondary pollution caused by harmful algae bodies that can be caused by treatment after the outbreak.

Accordingly, the present inventors have found that a mineral mixture; And citric acid (Citric acid), no nano acid (Nonanoic acid), curly dock in (Rumex) extract and rhubarb in (Rheum) extract, one or more selected from cashew nut oil; Has found that the composition for controlling harmful algae has an excellent controlling activity against harmful cyanobacteria such as Microcystis aeruginosa which causes severe problems every year in Korea and can lower the survival competitiveness of harmful algae after treatment, Thereby completing the invention.

In order to achieve the above object, the present invention basically uses a mineral composite. It contains various inorganic salts (Table 1) and the pH is about 0.8 ~ 2, which is low. Among the inorganic salts, aluminum (Al), copper (Cu) and iron (Fe) are inorganic salts frequently used for controlling harmful algae because they have the role of suppressing the growth of microalgae or coagulating microalgae at proper concentration Jancula & Marsalek, 2011, Chemosphere 85: 1415-1422; Chatsungneon & Chisti, 2016, Algal Research 13: 271-283). On the other hand, cyanobacteria such as microcystis have relatively good growth characteristics in weak alkaline pH of about 9.0 (Ha et al., Journal of the Environmental Sciences 11 (7): 705-711) , It is possible to mitigate the rapid growth of harmful cyanobacteria by lowering the pH to 9.0 or lower. In fact, some researchers have introduced techniques to control the harmful blue-green algae by lowering the pH (Wang et al., 2011, Bioresource Technology 102: 5742-5748). In the present invention, by titrating the mineral composite, the pH of the solution is slightly lowered, while the inorganic salts added inhibit the growth of harmful cyanobacteria, and the remaining harmless algae after the treatment promote the growth by inorganic salts And to induce them to be superior to the harmful cyanobacteria in their growth competence. In this case, in order to enhance the selective inhibition of the harmful blue-green algae, the present invention aims at inventing a new composition having a low function of parenteral toxicity and natural-friendly natural products and biochemicals. For this purpose, various materials were tested for mixing with mineral complexes, and as a result, a combination having a synergistic action with mineral complexes was discovered to complete the present invention.

In the present invention, cashew nut oil, natural extracts of Rumex and Rheum extract have been reported to have excellent selectivity between cyanobacteria and green algae as a natural product having excellent growth inhibitory activity against harmful cyanobacteria (Kim et al., 2011 Korean Patent No. 10-1024606; Kim et al., 2013; Korean Patent No. 10-1270255) Synergistic algicidal activity against microcystis in mixed treatment with mineral complex was not reported. Nonanoic acid, also called pelargonic acid, is a component that is abundant in many plants, including Pelargonium plants, and is used as a natural herbicide in the United States and other countries Citric acid is also contained in citrus fruits such as lemon and lime, and is used as a biochemical agent for controlling weeds and inhibiting the growth of microorganisms (Dayan et al. 2009, Bioorganic & Medicinal Chemistry 17: 4022-4034) (Dayan et al. 2009, Bioorganic & Medicinal Chemistry 17: 4022-4034; Ozdemir, 2009. Journal of Plant Pathology 91 (1): 221-224). However, these have also not been reported for synergistic algicidal activity against microcystis in mixed treatment with mineral complexes.

Hereinafter, the present invention will be described in detail.

The present invention relates to a mineral mixture; And citric acid (Citric acid), no nano acid (Nonanoic acid), curly dock in (Rumex) extract and rhubarb in (Rheum) extract, one or more selected from cashew nut oil; And a method for controlling harmful algae using the same.

In the present invention, the composition is a composite (group A) in which 0.4-1.0% of minerals are contained in an acid solution; And an additive selected from Citric acid, Nonanoic acid, Rumex extract and Rheum extract, and Cashew nut oil (group B); Is in the range of 0.5 to 99.5%: 99.5 to 0.5% by weight in the group A and the group B, respectively.

If any one of the above-mentioned weight ratios is less than 0.5% or more than 99.5%, the synergistic effect due to mixing may be insufficient.

In the present invention, the mineral composite is prepared from an aqueous solution of sulfuric acid or hydrochloric acid and has a pH of 1.0 to 3.0.

In the present invention, the cashew nut oil contains at least one kind selected from extracts containing about 51% of alkyl phenol compounds (anacardic acids, cardanols, cardols, etc.) and chlorides thereof, and harmful algae controlling composition Provides a bird control method.

In the present invention, curly dock in (Rumex) extract and rhubarb in (Rheum) extract by immersing the plant powder is selected from the roots of the root and rhubarb in (Rheum) of curly dock in (Rumex) in methanol, 3 to 7 days , Preferably at room temperature for 5 days, filtered, concentrated under reduced pressure, dissolved in 60 to 80%, preferably 70% methanol, extracted with the same amount of hexane 1 to 3 times, and then concentrated under reduced pressure, Diluting an aqueous solution layer with distilled water and extracting the mixture with ethyl acetate in an amount of 1 to 3 times, preferably twice; and collecting the obtained hexane layer and ethyl acetate layer, followed by concentration under reduced pressure.

In the present invention, the harmful algae micro during seutiseu (Microcystis), Ana vena (Anabaena), come la thoria (Oscillatoria), Spirulina (Spirulina), Aphanizomenon Menon (Aphanizomenon), no dyulra Liao (Nodularia), nose keulrodi ( Aldrich ), Cochlodinium , Stephanodiscus , and the like. Especially, it shows very high control effect against cyanobacteria such as Microcystis and Oscillatoria .

The mixed composition for controlling harmful algae of the present invention can be formulated into a pharmaceutically acceptable solid carrier, a liquid carrier, a preservative, and the like for the purpose of stably manifesting the effect, improving adhesion to the subject organism, , Liquid diluent, liquefied gas diluent, solid diluent, or other suitable adjuvant such as an emulsifying agent, dispersing agent or foaming agent.

The control composition of the present invention is preferably formulated into emulsions, wettable powders, granules, powders, capsules and gels, and is preferably provided as a contact agent through a formulation such as a donut type for buoyancy of the formulation .

The present invention provides a harmful algae controlling method for treating harmful algae by treating the composition for controlling harmful birds according to the present invention in water or soil where harmful algae such as those exemplified above are treated. At this time, it is preferable to block the mass proliferation in advance by treating the composition in the early stage of generation of harmful algae.

The present invention when the micro the composition for the harmful algae control seutiseu (Microcystis), Ana vena (Anabaena), come la thoria (Oscillatoria), Spirulina (Spirulina), Aphanizomenon Menon (Aphanizomenon), no dyulra Liao (Nodularia), nose keulrodi titanium (Cochlodinium), Stefano diseukeoseu (Stephanodiscus), chlorella (chlorella), Chlamydomonas (Chlamydomonas), three or four des mousse (Scenedesmus) and boats to Rio nose kusu (Botryococcus) in the algae is treated in water or soil inhabiting And a method for controlling harmful algae.

The harmful algae control method according to the present invention may be effective when the concentration of the effective ingredient is too low in the water or in the soil where the harmful algae are generated, and when the concentration of the effective ingredient is too high, it is not economical It is preferable to treat the composition for controlling harmful birds so as to have a concentration of 0.01 μg / ml to 200 μg / ml on the basis of the active ingredient, and it is preferable that the kind of the harmful algae, The degree of growth, the water quality environment, and the like.

The present invention utilizes the optimum pH range of algae growth and the different reactivity of algae species to compounds to selectively control the growth of the harmful algae targeted for control and then to control the growth of harmless algae Eg, green algae), thereby weakening the growth competence of harmful algae. Thus, it is advantageous to be useful for rational management of aquatic ecosystem within a range of not destroying the vegetation greatly by naturally inducing the density of harmful algae to be continuously suppressed.

Since the composition for controlling harmful birds according to the present invention has a synergistic killing effect on harmful algae such as cyanobacteria, it is possible to inject a small amount of compounds rather than each single treatment, thereby further reducing the adverse effects on the environment.

The composition for controlling harmful birds according to the present invention can be used for preventing damages caused by harmful bird pollution when cultivating a specific algae useful as a harmful algaecide which is eco-environmentally friendly and excellent in efficacy, There is also an advantage that can be applied to mass production.

FIGS. 1A and 1B are graphs and photographs showing the synergistic effect of controlling the microcystis aeruginosa WREO11 of the mineral complex and the citric acid mixture according to the present invention,
FIG. 2a, 2b are graphs and pictures confirm the synergistic effect for controlling rugi labor (Microcystis aeruginosa WREO11) when the micro seutiseu Ah of mineral complexes, and no nano acid mixtures according to the invention,
Figure 3a, 3b is a graph and photographs confirming the synergistic effect for controlling rugi labor (Microcystis aeruginosa UTEX2388) when the micro seutiseu Ah of mineral complexes, and cashew oil mixture according to the invention,
Figure 4a, 4b is a graph and photographs confirming the synergistic effect for controlling rugi labor (Microcystis aeruginosa UTEX2388) when the micro seutiseu Ah of mineral complexes, and curly dock in (Rumex) extract mixture.

The present invention will be described in more detail with reference to the following examples. However, the following examples are provided to aid understanding of the present invention, and the scope of the present invention is not limited by these examples in any sense.

Hereinafter, the technical and scientific terms used herein will be understood by those skilled in the art without departing from the scope of the present invention. Descriptions of known functions and configurations that may be unnecessarily blurred are omitted.

Because phytochemicals are treated in aquatic ecosystems, the desired harmful algae should be controlled to the extent that they do not significantly affect the water environment. To this end, it is preferable that the dosage of the pharmaceutical preparation is as low as possible. In the case of the compound, there may be combinations having a synergistic action in the biosynthesis by the interaction. It is very meaningful in terms of economical production of fungicide, environmental protection, etc. Mixed treatment interactions with mineral complexes were investigated for various materials, and the results of the combinations showing synergistic killing activity are presented in the following examples.

[ Example  1] Synergistic effect of mineral compound and citric acid mixture on cyanobacteria

The harmful cyanobacteria Microcystis aeruginosa WREO11) on the growth inhibitory effects of mineral complexes and citric acid mixtures. In the case of the compounds used, the mineral complexes are the compounds produced for the production and quality improvement of crops in eco-biotech. As shown in the analysis table below (Table 1), various inorganic salts are contained (total content of inorganic salts About 0.4%) were used. The pH of the product was about 1.2. For citric acid, citric acid purchased from Sigma-Aldrich (Cat. No. 251275-500G, purity 99.5%) was used.

element
Content Lower limit (parts by weight) Content upper limit (parts by weight) P 100 100 Na 100 150 Ca 220 280 Mn 270 320 K 850 1,200 Ti 1,700 2,300 Al 10,000 15,000 Mg 12,000 17,000 Fe 26,000 33,000 Zn 20 80 V 20 80 Ni 10 70 Ba, Co, Cu, Li, Si, Rb, W a very small amount a very small amount

Prescription published bird species to effect irradiation BG11 culture medium (pH 7.1), temperature 25 ℃, photoperiod 14 h light intensity 20-40μmolm ^-2 s and static culture in the growth chamber interior ^-1 conditions passaged cultured blue-green algae (Microcystis aeruginosa WREO11) was used.

The concentration of the cyanobacterial cells was adjusted to about 64 to 1,000,000 (in the A670 nm = 0.03 or less using a spectrophotometer cuvet) in 1.0 mL of the test solution, and then the test agent was added.

The test agent was tested at a concentration of 2 to 80 ppm. During the test period, the test solution was tested in a static fashion that did not replace it. The test agent was dissolved in distilled water and diluted 100 times in BG11 medium to prepare a test solution of each concentration. This was dispensed into glass tube bottles (3.5 cm in diameter, 60 mL) in 10 mL increments and repeated three times.

During the test period, the temperature was incubated at 25 ° C for 14 hours with a light intensity of 20-40 μmolm ^-2 s ^-1 . On the 6th day after the test solution treatment, the irradiation effect or absorbance was measured and examined. The effect of controlling the algae of the composition for control was expressed as the degree of inhibition (%) for the control group. The interaction between the two mixtures was evaluated by the Colby method (Colby SR. Weeds 15: 20-22, 1967) (Equation 1).

[Equation 1]

E = (XY) -XY / 100

[In the above formula (1), X represents the% inhibition at the p concentration of the compound A, and Y represents the% inhibition at the q concentration of the compound B.]

If the actual control (measured value, observed value) is greater than the expected value, the synergism, the same effect, and the antagonistic effect, respectively.

The results of the interactions between the mineral complex and the citric acid mixture on the growth inhibition of the cyanobacterium ( Microcystis aeruginosa WREO11) were as shown in Table 2 and FIG. In the concentration combination, 2.0 ~ 6.0 ㎍ / ㎖ of minerals and 10.0 ~ 40.0 ㎍ / ㎖ of citric acid showed the synergistic action than the expected value, and the combination with the strongest synergistic effect was 4.0 ㎍ / ㎖ of mineral + 30.0 ㎍ / ml treatment. In order to completely control the microcystis under the experimental conditions, treatment with 6.0 ㎍ / ml of minerals / 20.0 ㎍ / ml of citric acid or 4.0 ㎍ / ml of citric acid + 30.0 ㎍ / ml of citric acid was sufficient. However, each of the minerals and citric acid had to be treated at a concentration of 8.0 and 60 μg / ml, respectively.

Interaction of Mineral and Citric Acid Mixtures on Growth Suppression of Microcystis aeruginosa WREO11
Citric acid (占 퐂 / ml)
Minerals (占 퐂 / ml) Tidal activity (%)
Interaction figure
(Obs-Exp) Found
(Obs) Expectation
(Exp)
10 2.0 13.3 0.0 13.3 4.0 38.3 30.0 0.0 6.0 93.3 71.7 21.6
20 2.0 40.0 0.0 40.0 4.0 81.7 30.0 51.7 6.0 100.0 71.7 28.3
30 2.0 66.7 6.7 60.0 4.0 100.0 34.7 65.3 6.0 100.0 73.6 26.4
40 2.0 88.3 40.0 48.3 4.0 100.0 58.0 42.0 6.0 100.0 83.0 17.0

[ Example  2] mineral complex and Nonanoic acid  Synergistic effect of the mixture on the cyanobacteria

The harmful cyanobacteria Microcystis aeruginosa WREO11) were investigated in order to investigate the interaction between mineral complex and nonanoic acid. For the compound used, the mineral composite was the same as in Example 1, and the product purchased from Sigma Aldrich (Cat. No. N29905-500 mL, purity 96.0%) was used for the nonanoic acid.

Prescription published bird species to effect irradiation BG11 culture medium (pH 7.1), temperature 25 ℃, photoperiod 14 h light intensity 20-40μmolm ^-2 s and static culture in the growth chamber interior ^-1 conditions passaged cultured blue-green algae (Microcystis aeruginosa WREO11) was used.

The concentration of the cyanobacterial cells was adjusted to about 64 to 1,000,000 (in the A670 nm = 0.03 or less using a spectrophotometer cuvet) in 1.0 mL of the test solution, and then the test agent was added.

The test agent was tested at a concentration of 2 to 80 ppm. During the test period, the test solution was tested in a static fashion that did not replace it. In the case of the test drug, the mineral compound dissolved in distilled water and the nonanoic acid dissolved in acetone (containing 0.5% Tween 20) was used. First, a solution containing microcystis and a mineral complex was prepared using BG11 medium and dispensed into a glass tube (diameter 3.5 cm, 60 mL) in three replicates of 10 mL each. Subsequently, nonanoic acid prepared at various concentrations was added at a dilution of 200 times (Acetone and Tween 20 final concentrations were 0.5% and 25 ppm, respectively).

During the test period, the temperature was incubated at 25 ° C for 14 hours with a light intensity of 20-40 μmolm ^-2 s ^-1 . On the 6th day after the test solution treatment, the irradiation effect or absorbance was measured and examined. The effect of controlling the algae of the composition for control was expressed as the degree of inhibition (%) for the control group. The interaction between the two mixtures was evaluated by the Colby method (Colby SR. Weeds 15: 20-22, 1967) (Equation 1).

[Equation 1]

E = (XY) -XY / 100

[In the above formula (1), X represents the% inhibition at the p concentration of the compound A, and Y represents the% inhibition at the q concentration of the compound B.]

If the actual control (measured value, observed value) is greater than the expected value, the synergism, the same effect, and the antagonistic effect, respectively.

The cyanobacterial mixture of mineral complex and nonanoic acid ( Microcystis aeruginosa WREO11) growth inhibition was examined in Table 3 and Fig. In the concentration combination, 2.0 ~ 6.0 ㎍ / ㎖ of minerals and 0.63 ~ 10.0 ㎍ / ㎖ of nonanoic acid showed the synergistic effect than the expected value, and showed a synergistic effect than the mineral composite + citric acid mixture treatment. The highest concentration of synergistic combination was observed in the treatment of minerals (2.0 ㎍ / ㎖) and nonanoic acid (2.5 ㎍ / ㎖). In order to completely control the microcystis under the experimental conditions, it was sufficient to treat 4.0 ㎍ / ㎖ of minerals and 5.0 ㎍ / ㎖ of nonanoic acid or 6.0 ㎍ / ㎖ of minerals and 0.63 ㎍ / ㎖ of nonanoic acid. However, in the case of the single case, the minerals and the nonanoic acids were each to be treated at a concentration of 8.0, 15 to 20 μg / ml.

Microcystis < RTI ID = 0.0 > aeruginosa interaction mineral complexes and no nano-acid mixture on the growth inhibition of WREO11) castle Nonanoic acid
(占 퐂 / ml) mineral
(占 퐂 / ml) Tidal activity (%) Interaction figure
(Obs-Exp) Obs. Expectation (Exp)
0.63 2.0 36.7 24.3 12.4 4.0 91.7 74.2 17.5 6.0 100.0 95.2 4.8
1.25 2.0 56.7 29.5 27.2 4.0 93.3 76.0 17.3 6.0 100.0 95.5 4.5
2.5 2.0 71.7 37.4 34.3 4.0 95.0 78.6 16.4 6.0 100.0 96.0 4.0
5 2.0 86.7 58.3 28.4 4.0 96.7 85.8 10.9 6.0 100.0 97.3 2.7
10 2.0 95.0 85.7 9.3 4.0 100 95.1 4.9 6.0 100.0 99.1 0.9

[ Example  3] mineral complex and Cry ( Rumex ) Synergistic effect of the extract mixture on the cyanobacteria

The harmful cyanobacteria Microcystis aeruginosa WREO11) were investigated in order to investigate the interaction between mineral complex and Rumex extract. In the case of the compound used, the mineral composite was the same as in Example 1, and the Rumex extract was used as the undiluted solution prepared as follows. That is, the root powder of Rumex was immersed in methanol and allowed to stand at room temperature for 5 days. After filtration, the filtrate was concentrated under reduced pressure. This was dissolved in 70% methanol, extracted twice with an equal volume of hexane, and then the hexane layer and the aqueous layer were concentrated under reduced pressure. The concentrated aqueous layer was dissolved in distilled water and extracted with two equal portions of ethyl acetate. The hexane layer and the ethyl acetate layer thus obtained were collected and concentrated under reduced pressure.

Prescription published bird species to effect irradiation BG11 culture medium (pH 7.1), temperature 25 ℃, photoperiod 14 h light intensity 20-40 μmolm ^-2 s and static culture in the growth chamber interior ^-1 conditions passaged cultured blue-green algae (Microcystis aeruginosa WREO11) was used.

The test agent was added to 1.0 mL of the test solution and adjusted to a concentration of about 500,000 cyanobacteria (A670 nm = 0.028 or less using a spectrophotometer cuvette).

The test agent was tested at a concentration of 0.125 to 8.0 ppm. During the test period, the test solution was tested in a static fashion that did not replace it. For the test drug, the mineral complex was dissolved in distilled water and the Rumex extract was dissolved in acetone (containing 0.5% Tween 20). First, a solution containing microcystis and a mineral complex was prepared using BG11 medium and dispensed into a glass tube (diameter 3.5 cm, 60 mL) in three replicates of 10 mL each. Subsequently, the extracts were added at a dilution of 200 times (Acetone and Tween 20 final concentrations of 0.5% and 25 ppm, respectively).

During the test period, the temperature was incubated at 25 ° C for 14 hours with a light intensity of 20-40 μmolm ^-2 s ^-1 . On the 6th day after the test solution treatment, the irradiation effect or absorbance was measured and examined. The effect of controlling the algae of the composition for control was expressed as the degree of inhibition (%) for the control group. The interaction between the two mixtures was evaluated by the Colby method (Colby SR. Weeds 15: 20-22, 1967) (Equation 1).

[Equation 1]

E = (XY) -XY / 100

[In the above formula (1), X represents the% inhibition at the p concentration of the compound A, and Y represents the% inhibition at the q concentration of the compound B.]

If the actual control (measured value, observed value) is greater than the expected value, the synergism, the same effect, and the antagonistic effect, respectively.

The results of the interactions between the mineral complex and the Rumex extract mixture on the growth inhibition of the cyanobacterium ( Microcystis aeruginosa WREO11) were as shown in Table 4 and FIG. 3. In the concentration combinations, the observed values were higher than expected at the minerals of 2.0 ~ 6.0 ㎍ / ㎖ + Rumex extract (0.125 ~ 0.25 ㎍ / ㎖) Showing a high synergistic effect. The highest synergistic concentration combination in this experiment was in the treatment of 4.0 ㎍ / ㎖ of miner and 0.25 ㎍ / ㎖ of Rumex extract. In order to completely control the microcystis in the present experimental conditions, treatment with minerals 2.0 μg / ml + Rumex extract 0.5 μg / ml or minerals 6.0 μg / ml + Rumex extract 0.125 μg / It was enough. However, the extracts of minerals and Rumex extracts had to be treated at concentrations of 8.0 and 1.0 μg / ml, respectively.

Interaction of Mineral Complex and Spruce Extract Mixtures on Growth Inhibition of Microcystis aeruginosa WREO11 Cry
The extract (占 퐂 / ml) mineral
(占 퐂 / ml) Tidal activity (%) Interaction figure
(Obs-Exp) Obs. Expectation (Exp)
0.125 2.0 15.0 3.3 11.7 4.0 66.7 22.6 44.1 6.0 100.0 66.2 33.8
0.25 2.0 80.0 15.0 65.0 4.0 100.0 32.0 68.0 6.0 100.0 70.3 29.8
0.5 2.0 96.7 95.0 1.7 4.0 100.0 96.0 4.0 6.0 100.0 98.3 1.8

[ Example  4] mineral complex and Cashew nut  Control effect of oil mixture on cyanobacteria

The interactions of mineral complexes and cashew nut oil mixtures on growth inhibition of microcystis aeruginosa WREO11, a harmful cyanobacteria, were investigated. In the case of the compound used, the mineral composite was the same as in Example 1, and the cashew nut oil was extracted from Cashew nut shell and the partially purified mixture was purchased commercially. Their composition and content were confirmed by LC-MS analysis and contained about 51% of alkyl phenol compounds (anacardic acids, cardanols, cardols, etc.).

Prescription published bird species to effect irradiation BG11 culture medium (pH 7.1), temperature 25 ℃, photoperiod 14 h light intensity 20-40 μmolm ^-2 s and static culture in the growth chamber interior ^-1 conditions passaged cultured blue-green algae (Microcystis aeruginosa WREO11) was used.

The concentration of the cyanobacterial cells was adjusted to about 64 to 1,000,000 (in the A670 nm = 0.03 or less using a spectrophotometer cuvet) in 1.0 mL of the test solution, and then the test agent was added.

The test agent was tested at a concentration of 0.037 to 8.0 ppm. During the test period, the test solution was tested in a static fashion that did not replace it. For the test drug, the mineral composite dissolved in distilled water and the cashew nut oil in acetone (containing 0.5% Tween 20) was used. First, a solution containing microcystis and a mineral complex was prepared using BG11 medium and dispensed into a glass tube (diameter 3.5 cm, 60 mL) in three replicates of 10 mL each. Cashew nut oil dissolved at various concentrations in acetone solvent was then added at a 200-fold dilution (Acetone and Tween 20 final concentrations of 0.5% and 25 ppm, respectively).

During the test period, the temperature was incubated at 25 ° C for 14 hours with a light intensity of 20-40 μmolm ^-2 s ^-1 . On the 6th day after the test solution treatment, the irradiation effect or absorbance was measured and examined. The effect of controlling the algae of the composition for control was expressed as the degree of inhibition (%) for the control group. The interaction between the two mixtures was evaluated by the Colby method (Colby SR. Weeds 15: 20-22, 1967) (Equation 1).

[Equation 1]

E = (XY) -XY / 100

[In the above formula (1), X represents the% inhibition at the p concentration of the compound A, and Y represents the% inhibition at the q concentration of the compound B.]

If the actual control (measured value, observed value) is greater than the expected value, the synergism, the same effect, and the antagonistic effect, respectively.

Cyanobacteria of mineral complex and cashew nut oil mixture ( Microcystis aeruginosa WREO11) growth inhibition was examined in Table 5 and FIG. 4. In the concentration combination, 2.0 ~ 6.0 ㎍ / ㎖ of minerals and 0.037 ~ 0.5 ㎍ / ㎖ of cashew nut oil showed higher synergistic effect than the expected value and showed a synergistic effect compared with the mineral complex + . The highest concentration of synergistic combination was observed at 2.0 ㎍ / ㎖ of minerals and 0.11 ㎍ / ㎖ of cashew nut oil. In order to completely control the microcystis under the experimental conditions, treatment with 2.0 ㎍ / ml of minerals + 0.5 / / ml of cashew nut oil or 4.0 ㎍ / ml of minerals + 0.037 / / ml of cashew nut oil was sufficient. However, each of the minerals and cashew nut oil had to be treated at a concentration of 8.0 and 1.0 μg / ml, respectively.

Microcystis < RTI ID = 0.0 > Interaction of mineral and cashew nut oil mixtures on growth inhibition of aeruginosa WREO11 Cashew nut oil
(占 퐂 / ml) mineral
(占 퐂 / ml) Tidal activity (%) Interaction figure
(Obs-Exp) Obs. Expectation (Exp)
0.037 2.0 75.0 54.8 20.2 4.0 100.0 78.2 21.8 6.0 100.0 95.3 4.7
0.11 2.0 80.0 56.5 23.5 4.0 100.0 79.0 21.0 6.0 100.0 95.5 4.5
0.33 2.0 85.0 67.8 17.2 4.0 100.0 84.4 15.6 6.0 100.0 96.7 3.3

Claims (6)

(A) a mineral mixture containing 0.4 to 1.0% of a mineral in an acid solution; And (B) at least one selected from citric acid, nonanoic acid, Rumex extract, Rheum extract, and cashew nut oil; Wherein the composition is a composition for controlling harmful algae. The method according to claim 1,
The composition comprises a complex (group A) in which 0.4 to 1.0% of minerals are contained in an acid solution; And an additive selected from Citric acid, Nonanoic acid, Rumex extract, Rheum extract and Cashew nut oil (Group B); Wherein the weight ratio of the group A to the group B is 0.5 to 99.5%: 99.5 to 0.5%. The method according to claim 1,
Curly dock in (Rumex) extract and rhubarb in (Rheum) extracts are deposited in the root and rhubarb in room temperature for (Rheum) to the plant powder is selected from the roots immersed in a methanol 3 to 7 days of a curly dock in (Rumex) Filtration , Concentrated under reduced pressure, dissolved in 60 to 80% methanol, extracted with the same amount of hexane 1 to 3 times, and then concentrated under reduced pressure. The concentrated aqueous layer was diluted with distilled water and then diluted with an equal amount of ethyl acetate to 1 to 3 And extracting the obtained hexane layer and ethyl acetate layer, and concentrating them under reduced pressure to prepare a harmful algae controlling composition. The method according to claim 1,
Wherein the cashew nut oil contains an alkyl phenol compound in an amount of 50% or more. Claim 1 to claim when micro to any one of the compositions for harmful algae control of 4 seutiseu (Microcystis), Ana vena (Anabaena), come la thoria (Oscillatoria), Spirulina (Spirulina), Aphanizomenon Menon (Aphanizomenon), no dyulra Liao (Nodularia), nose keulrodi titanium (Cochlodinium), Stefano diseukeoseu (Stephanodiscus), chlorella (chlorella), Chlamydomonas (Chlamydomonas), three or four des mousse (Scenedesmus) and the boat is formatted birds in the Rio nose kusu (Botryococcus) Wherein the treatment is carried out in water or in soil. 6. The method of claim 5,
Wherein the harmful-controlling composition is treated so as to have a concentration of 0.01 to 200 mu g / ml in water or in soil based on the active ingredient.

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