Gastropod exterminator or repellent
A mollusk repellent using ginger extract and mustard effectively addresses the need for natural alternatives by achieving 100% gastropod repellency, leveraging a synergistic effect of these natural ingredients.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- IKEDA SHOKKEN KK
- Filing Date
- 2024-11-29
- Publication Date
- 2026-06-10
AI Technical Summary
Existing methods for controlling mollusks such as slugs and snails, which damage crops, are limited in their effectiveness and often rely on synthetic chemicals, lacking natural alternatives.
A mollusk repellent or deterrent using a combination of ginger extract and mustard as active ingredients, formulated into a liquid or solid form, is applied directly or indirectly to repel or exterminate gastropods.
The combination of ginger extract and mustard provides a synergistic effect, achieving a 100% repellency rate against gastropods, with minimal environmental impact and ease of use, utilizing edible and natural components.
Smart Images
Figure 2026094536000001_ABST
Abstract
Description
Technical Field
[0006] , ,
[0007] ,
[0001] The present invention relates to a mollusk repellent or deterrent and a method for repelling or deterring mollusks.
Background Art
[0002] Mollusks such as slugs and snails damage mushrooms, vegetables, fruits, etc., and thus control methods have been studied.
[0003] In Non-Patent Document 1, a method for controlling slugs in sawdust shiitake cultivation was studied, and it was disclosed that control effects were confirmed with tabasco, citric acid, malic acid, pepper, garlic, cinnamon, grated Japanese horseradish, grated mustard, etc., and repellent effects were confirmed with malic acid, garlic, etc.
Prior Art Documents
Non-Patent Documents
[0004]
Non-Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] An object of the present invention is to provide a mollusk repellent or deterrent containing a natural product-derived component as an active ingredient and a method for repelling or deterring using the same.
Means for Solving the Problems
[0006] The inventors conducted various studies to solve such problems and found that by using a ginger extract and mustard in combination, there is an effect of repelling or deterring mollusks, and thus completed the present invention.
[0007] That is, the present invention relates to the following aspects [1] to [4]. [1] A repellent or exterminator for gastropods, containing ginger extract and mustard as active ingredients. [2] A gastropod exterminator or repellent according to [1], comprising 1 to 30 parts by weight of mustard-derived solids per 1 part by weight of ginger-derived solids. A method for controlling or repelling gastropods, characterized by directly or indirectly spraying a liquid containing a gastropod exterminator or repellent described in [3][1] or [2] onto gastropods to exterminate or repel them. [4] A method for controlling or repelling gastropods as described in [3], characterized by spraying a liquid containing 0.2 to 40 mg / mL of ginger-derived solids and 0.5 to 50 mg / mL of mustard-derived solids. [Effects of the Invention]
[0008] The present invention provides a gastropod extermination or repellent agent containing naturally derived components as active ingredients, and a method of extermination or repellent using the same. [Brief explanation of the drawing]
[0009] [Figure 1] A diagram illustrating the repellency test is shown. [Modes for carrying out the invention]
[0010] The ginger extract used in the present invention is an extract obtained from a plant of the Zingiberaceae family. Examples include extracts obtained by juicing, as well as extracts obtained by supercritical fluid extraction, steam distillation, solvent extraction, etc. The extract can be separated into solid and liquid portions by filtration using nonwoven fabric, mesh, etc., centrifugation, etc., and the liquid portion can be recovered. The ginger extract used in the present invention is preferably a concentrated or dried product, which can be obtained by drying and powdering by drum drying, air drying, spray drying, vacuum drying and / or freeze-drying, etc., in which case general excipients such as dextrin can be used. Furthermore, it is preferable to obtain an emulsion of the ginger extract with improved dispersibility by adding an emulsifier, and it is preferable that the powder obtained by spray-drying with an excipient such as dextrin after emulsification. As a commercially available ginger extract, for example, Ginger Extract Powder S, H, E, NE, or G2 (manufactured by Ikeda Sugar Refining Co., Ltd.) can be used. Furthermore, the ginger extract used in the present invention preferably contains polyphenols, with the polyphenol content being preferably 0.1 to 30% by weight, more preferably 0.2 to 25% by weight, even more preferably 0.3 to 20% by weight, particularly preferably 0.4 to 15% by weight, and most preferably 0.5 to 10% by weight. In addition, the total ratio of shogaol and gingerol in the polyphenols of the ginger extract is preferably 10 to 98% by weight, more preferably 20 to 95% by weight or less, even more preferably 30 to 90% by weight, and particularly preferably 40 to 90% by weight.
[0011] The emulsifier is not particularly limited as long as it is a component with emulsifying ability, and examples include polysaccharides such as acacia gum, ghati gum, xanthan gum, and sodium starch octenyl succinate; proteins such as casein and soy protein and their hydrolysates; lecithin, enzyme-treated lecithin, polyglycerol fatty acid esters, and sucrose fatty acid esters. Furthermore, the emulsification process can be carried out using general emulsification methods. In particular, it can be carried out using emulsification equipment, such as a high-pressure homogenizer, colloid mill, ultrasonic emulsifier, homomixer, and homodisper, and two or more types of equipment may be combined.
[0012] The mustard used in this invention refers to a spice made from the seeds of Brassicaceae mustard greens, and any common mustard will suffice. It may be made from one or more of the following: oriental mustard seeds, yellow mustard seeds, brown mustard seeds, or black mustard seeds. However, mustard powder obtained by crushing yellow mustard seeds is preferred, and mustard powder obtained by oil extraction, milling, and drying may also be used.
[0013] One aspect of the present invention is a gastropod exterminator or repellent containing ginger extract and mustard as active ingredients. The exterminator or repellent may be in solid or liquid form. If solid, it can be dissolved into a liquid form at the time of use, or if liquid, it can be diluted before use. The exterminator or repellent is not particularly limited as long as it can exterminate or repel gastropods, but it preferably contains 1 to 30 parts by weight of mustard-derived solids per 1 part by weight of ginger-derived solids, more preferably 1.5 to 25 parts by weight, even more preferably 2 to 20 parts by weight, and particularly preferably 2.5 to 10 parts by weight of mustard-derived solids. The exterminator or repellent is easy to use because its active ingredients are edible components derived from natural products and have little impact on the environment, crops, flowering trees, and other plants. Furthermore, it may contain acids such as malic acid, ascorbic acid, citric acid, and acetic acid, as well as known ingredients such as Tabasco, pepper, garlic, cinnamon, wasabi, and mustard. In addition, fragrances, colorants, etc., may be added as needed. Furthermore, formulation aids such as surfactants, dispersants, thickeners, and propellants, solvents, etc., can be appropriately blended to prepare liquid formulations, emulsions, oils, aerosols, etc.
[0014] Another aspect of the present invention, a method for controlling or repelling gastropods, is characterized by directly or indirectly spraying a liquid containing a control or repellent agent that contains ginger extract and mustard as active ingredients onto gastropods to control or repel them. Here, "spraying" encompasses all meanings such as scattering, scattering, spraying, and propelling, and "indirectly" means that the agent is sprayed in advance on plants or other areas that are habitats for gastropods such as slugs and snails, so that when gastropods move in, they come into contact with the sprayed control or repellent agent. The method of extermination or repellent is not particularly limited as long as it can exterminate or repellent gastropods, but it is preferable to spray a liquid containing ginger-derived solids in a concentration of preferably 0.2 to 40 mg / mL, more preferably 0.4 to 30 mg / mL, even more preferably 0.5 to 20 mg / mL, particularly preferably 0.6 to 10 mg / mL, and most preferably 0.7 to 5 mg / mL, and further containing mustard-derived solids in a concentration of preferably 0.5 to 50 mg / mL, more preferably 1 to 40 mg / mL, even more preferably 1.5 to 30 mg / mL, and particularly preferably 2 to 20 mg / mL. [Examples]
[0015] The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples. In the present invention, all percentages are by weight unless otherwise specified.
[0016] [Repellent effect of each ingredient] For each product listed in Table 1 (ginger extract (total polyphenol content: 3.8% by weight, total content of shogaol and gingerol: 70% by weight or more), wasabi powder, mustard powder, lemon juice, or garlic extract), the following repellent tests for the brown slug were conducted using aqueous solutions prepared at the spray concentrations listed in Table 2, with the solid content concentration of each product being the basis for the repellent tests for the brown slug. The solid content concentrations derived from each raw material are also listed in Table 2.
[0017] [Table 1]
[0018] [Repellent Test for Slug Caterpillars] Filter paper with a diameter of 125 mm soaked with 5 mL of each aqueous solution was laid at the bottom of a plastic container with a length of 130 mm, a width of 130 mm, and a height of 60 mm. A platform with a diameter of 50 mm and a height of 5 mm was placed on it, and then filter paper with a diameter of 55 mm soaked with water was placed on the platform. Three slug caterpillars were released there, and whether they moved under the platform was observed (Figure 1). If they could not move under the platform, it was considered that there was a repellent effect. If all three could not move, the repellent rate was considered 100%. The repellent rate after 30 minutes was determined. Note that the case of "could not move under the platform" considered to have a "repellent effect" refers to the situation where, although the movement under the platform was started, the movement was stopped by reversing immediately at that moment. In the test using filter paper soaked with water instead of each aqueous solution, all the slug caterpillars on the platform were observed to move quickly under the platform.
[0019] [Table 2]
[0020] As shown in Table 2, no repellent effect on slug caterpillars was observed in wasabi powder and garlic extract, while a repellent effect on slug caterpillars was observed in ginger extract, mustard powder, and lemon juice.
[0021] [Repellent Effect at Each Raw Material Concentration] Regarding the ginger extract, mustard powder, and lemon juice for which a repellent effect was observed, a repellent test for slug caterpillars was conducted using aqueous solutions prepared at the spraying concentrations described in Table 3 as the solid content concentrations derived from each raw material. Note that the solid content concentrations derived from the raw materials are also listed in Table 3.
[0022] [Table 3]
[0023] As shown in Table 3, a 100% repellent effect against the brown slug was observed when the spraying concentrations were 7.5 mg / mL of ginger extract, 9.3 mg / mL of mustard powder, and 5.7 mg / mL of lemon juice, based on the solid content concentration derived from the raw materials. On the other hand, when the spraying concentrations were 0.75 mg / mL of ginger extract, 4.6 mg / mL of mustard powder, and 2.9 mg / mL of lemon juice, based on the solid content concentration derived from the raw materials, the repellent rate against the brown slug was 33%, indicating a decrease in repellent effect to one-third.
[0024] [Repellent effect of each combination of raw materials] Using the test solutions of ginger extract, mustard powder, or lemon juice at the concentrations used in Test Examples 7, 9, or 12, which achieved a repellency rate of 33%, as controls, a repellency test was conducted on the brown slug when ginger extract at those concentrations was combined with mustard powder or lemon juice. The concentrations of mustard powder and lemon juice used were those used in Test Examples 10 and 13, which achieved a repellency rate of 0%, in addition to the concentrations that resulted in a 33% repellency rate. The solid content concentration derived from the raw materials is also listed in Table 4.
[0025] [Table 4]
[0026] As shown in Table 4, the repellency rate against the brown slug was 33% when ginger extract, mustard powder, or lemon juice were used alone. However, when the same concentrations of ginger extract and mustard powder were combined, the repellency rate increased to 100%. Furthermore, mustard powder with a raw material solid content of 2.3 mg / mL, which had a repellency rate of 0%, achieved a 100% repellency rate when combined with ginger extract at the same concentration that resulted in a 33% repellency rate. The raw material solid content of mustard powder, with the raw material solid content of ginger extract set to 1, was 6.2 in Test Example 17 and 3.1 in Test Example 18. On the other hand, when lemon juice was combined with ginger extract, the repellency rate was equivalent to or less than that of each substance used alone. From the above, it was found that combining ginger extract and mustard powder results in a synergistic effect between the two, improving the slug repellent effect.
[0027] [The effect of ginger extract concentration on repellent effect when ginger extract and mustard powder are used together] To investigate whether the concentration of ginger extract in Test Example 18, which achieved a 100% repellency rate, could be reduced, a repellent test was conducted on the brown slug using aqueous solutions prepared at the spray concentrations listed in Table 5, to evaluate the repellent effect of combining even lower concentrations of ginger extract with mustard powder. The solid content concentration derived from the raw materials is also listed in Table 5.
[0028] [Table 5]
[0029] As shown in Table 5, in the combination of ginger extract and mustard powder, the repellency rate decreased when the raw material solid content concentration of the ginger extract was reduced from 0.75 mg / mL to 0.6 mg / mL. Therefore, it was found that in order to achieve a 100% repellency rate, the spraying concentration needed to be 0.75 mg / mL for the ginger extract and 2.3 mg / mL for the mustard powder, based on the raw material solid content concentration. When the raw material solid content of the ginger extract was set to 1, the raw material solid content of the mustard powder was 3.1 in Test Example 21 and 3.9 in Test Example 22. [Explanation of symbols]
[0030] 1 Plastic container 2. Filter paper soaked in each aqueous solution. 3 units 4. Filter paper soaked in water 5 Slugs
Claims
1. A repellent or exterminator for gastropods, containing ginger extract and mustard as active ingredients.
2. The gastropod exterminator or repellent according to claim 1, comprising 1 to 30 parts by weight of mustard-derived solids per 1 part by weight of ginger-derived solids.
3. A method for controlling or repelling gastropods, characterized by directly or indirectly spraying a liquid containing the gastropod exterminator or repellent described in claim 1 or 2 onto gastropods to exterminate or repel them.
4. A method for controlling or repelling gastropods according to claim 3, characterized by spraying a liquid containing 0.2 to 40 mg / mL of ginger-derived solids and 0.5 to 50 mg / mL of mustard-derived solids.