Deodorizing liquid, deodorizing spray, and method for manufacturing deodorizing liquid

Abstract

The present invention provides a deodorizing liquid containing plant-derived components with excellent deodorizing effects, a deodorizing spray utilizing the deodorizing liquid, a method for producing the deodorizing liquid, and a method for producing a deodorizing extract. [Solution] A deodorizing liquid containing an aqueous extract of roasted coffee bean chaff, a deodorizing liquid containing an aqueous and ethanol extract of roasted coffee bean chaff, a deodorizing spray containing the deodorizing liquid in a container, a method for producing a deodorizing extract comprising the steps of contacting chaff separated from roasted coffee beans with a liquid containing water or a liquid containing water and ethanol to obtain an extract, and filtering the extract to remove solid components, and a method for producing a deodorizing liquid comprising the step of diluting the filtered extract with one or more liquids selected from the group consisting of water and ethanol so that the content of the filtered extract is 1 to 10% by volume.

Description

Technical Field

[0001] The present invention relates to a deodorant liquid, a deodorant spray, and a method for producing a deodorant liquid. Background Art

[0002] Solid deodorants, deodorant liquids, and deodorant sprays are widely used. For example, some are known to be used for deodorizing textile products such as clothing, and some are known to deodorize spaces such as indoors. Various components and fragrances are used for deodorization.

[0003] For the purpose of eliminating odors adsorbed indoors, charcoal such as binchotan charcoal and activated carbon is used. For example, the charcoal is placed in shoe cabinets, toilets, kitchens and the like to adsorb odors for deodorization. Additionally, extraction residues remaining after extracting green tea or coffee are sometimes placed and used as a deodorant material.

[0004] In the case of odors adsorbed to textile products such as clothing, there are deodorant products that use plant-derived components to trap odor-causing molecules and deodorize the fibers constituting the textile product. For example, as disclosed in Patent Document 1, a deodorant obtained by extracting leaves of Gramineae plants with a solvent such as water, warm water, alcohol, ester, acid, alkali, or ketone is also known. Additionally, a deodorant containing a component derived from corn is also known. Prior Art Documents Patent Documents

[0005] Patent Document 1 Japanese Unexamined Patent Publication No. Hei 2-167168 Summary of the Invention Problem to be Solved by the Invention

[0006] In the case of solid deodorizers like the charcoal mentioned earlier, their use is limited to being placed in indoor spaces. They are unsuitable for deodorizing surfaces other than air, such as fabric products. Furthermore, they are difficult to use in very confined spaces. Thus, solid deodorizers have problems in that their range of use is limited.

[0007] According to the inventors' research, conventional deodorizing liquids using extracts of plant-based raw materials as active ingredients, as described above, do not have sufficient deodorizing effect. There is a problem that a large amount of deodorizing liquid must be sprayed in order to deodorize odors that have permeated indoor spaces and fabric products, including clothing. When a large amount of deodorizing liquid is sprayed, the indoor environment and fabric products become damp, and there is a problem that one must wait until they dry.

[0008] For example, the odor of cigarette smoke on fabric products or the smell of a room immediately after smoking was difficult to eliminate even with the long-term placement of solid deodorizers such as charcoal. Similarly, it was extremely difficult to achieve a level of deodorization that almost completely eliminated the cigarette smell using conventionally known deodorizing liquids. The smell of cigarette smoke is one of the smells that non-smokers dislike the most.

[0009] For example, the odor emanating from seafood is a typical example of an undesirable smell. The fishy smell that permeates hands, knives, cutting boards, and other utensils after handling seafood, and the fishy smell that adheres to the polystyrene trays used for seafood sold in supermarkets, are difficult to completely eliminate even with hand soap or dish soap. Furthermore, conventionally known deodorizing liquids sprayed on hands do not have sufficient deodorizing effect. There is a need for a deodorizing liquid that can quickly deodorize hands after handling fishy-smelling seafood, polystyrene trays, packaging materials such as those used for seafood, and cooking utensils such as knives.

[0010] The present invention aims to provide a deodorizing liquid containing plant-derived components having excellent deodorizing effects, a deodorizing spray utilizing the deodorizing liquid, a method for producing the deodorizing liquid, and a method for producing a deodorizing extract. [Means for solving the problem]

[0011] The inventors of this invention discovered that chaff, a by-product of coffee bean roasting, possesses extremely excellent deodorizing properties, and thus completed the present invention.

[0012] The above problem is solved by using a deodorizing liquid containing an aqueous extract of the chaff from roasted coffee beans.

[0013] The above problem is solved by a deodorizing liquid containing water and ethanol extract of roasted coffee bean chaff.

[0014] The above problem is solved by a deodorizing spray containing the aforementioned deodorizing liquid in a container.

[0015] The above problems are solved by a method for producing a deodorizing extract, which includes the steps of: contacting chaff separated from roasted coffee beans with a liquid containing water or a liquid containing water or ethanol to obtain an extract; and filtering the extract to remove solid components.

[0016] The above problem is solved by a method for producing a deodorizing liquid, which includes a step of diluting the filtered extract with one or more liquids selected from the group consisting of water and ethanol so that its content is 1 to 10% by volume.

[0017] The aforementioned deodorizing liquid and deodorizing spray use water or a mixture of water and ethanol as the extraction solvent. These solvents have low toxicity to living organisms, making them safe for humans to come into contact with the deodorizing liquid, and they also exhibit superior deodorizing effects.

[0018] In deodorizing liquids containing ethanol, the rate of evaporation of the liquid increases. Therefore, even if the room environment or fabric products become wet or damp when the deodorizing liquid is used, they can dry in a short time.

[0019] In the deodorant liquid, 1 to 10% by volume of the aqueous extract or the water and ethanol extract can be contained. The aqueous extract or the water and ethanol extract may use the undiluted solution as a deodorant liquid, but may also be used after dilution since the dilution still provides excellent deodorizing effect. Dilution can further reduce the production cost of the deodorant liquid. Note that chaff is a by-product produced as waste material when roasting coffee beans. Since the deodorant liquid uses waste material as a raw material, its production cost is originally low.

[0020] In the deodorant liquid, the deodorant liquid can contain 50 to 99% by volume of water. Using water as a solvent is safe for living organisms and can also reduce production cost.

[0021] The deodorant liquid can contain 55 to 90% by volume of water, and 5% by volume or more and less than 68% by volume of ethanol. In a deodorant liquid blended with ethanol, the volatilization rate of the deodorant liquid increases. For this reason, even if indoor environments or textile products get wet or damp when the deodorant liquid is used, they can be dried in a short time. Effects of the Invention

[0022] According to the present invention, there can be provided a plant-derived component deodorant liquid having excellent deodorizing effect, a deodorant spray using the deodorant liquid, a method for producing the deodorant liquid, and a method for producing a deodorizing extract. Brief Description of the Drawings

[0023] [Figure 1] It is a graph represented by a histogram showing the number of spraying times and the number of panelists who answered that they no longer perceived the odor when the deodorant liquid according to Example 1 was sprayed on the hands of test subjects who had seafood odor adhered after handling seafood, in a sensory test conducted by a panel of 30 people. [Figure 2] It is a graph showing the change in odor intensity measured by an odor intensity meter when the deodorant liquid according to Example 1 is sprayed a total of five times on hands with adhered seafood odor after handling seafood. [Figure 3] It is a histogram showing, in a sensory test conducted with a panel of 30 people, the number of times the deodorant liquid according to Example 1 was sprayed onto trays packaging seafood and the number of panelists who no longer perceived the odor of seafood. [Figure 4] It is a graph showing the change in odor level measured by a deodorization level meter when the deodorant liquid according to Example 1 was sprayed a total of 5 times onto a handkerchief simulating a cloth product impregnated with tobacco odor. [Figure 5] It is a graph showing the change in odor level measured by a deodorization level meter when the deodorant liquid according to Example 1 was sprayed a total of 5 times into a styrofoam container simulating an indoor space impregnated with tobacco odor. [Figure 6] It is a histogram showing, in a sensory test conducted with a panel of 30 people, the number of spraying times and the number of panelists who answered that they no longer perceived odor when the deodorant liquid according to Example 1 was sprayed a total of 5 times onto a handkerchief impregnated with tobacco odor and into a styrofoam container. [Figure 7] It is a graph showing the change in odor level measured by a deodorization level meter when the deodorant liquid according to Example 1 was sprayed a total of 5 times onto sports shoes emitting a strong odor. [Figure 8] It is a histogram showing, in a sensory test conducted with a panel of 30 people, the number of spraying times and the number of panelists who answered that they no longer perceived odor when the deodorant liquid according to Example 1 was sprayed a total of 5 times onto sports shoes emitting a strong odor. [Figure 9] It is a graph showing the relationship between ethanol concentration and quick-drying performance when the medium is a mixed liquid of water and ethanol. [Figure 10] It is a histogram showing, the number of spraying times and the number of panelists who answered that they no longer perceived odor when the deodorant liquid according to Example 2 was sprayed a total of 5 times onto a handkerchief simulating a cloth product impregnated with tobacco odor. DESCRIPTION OF EMBODIMENTS FOR CARRYING OUT THE INVENTION

[0024] Hereinafter, embodiments of the present invention will be described.

[0025] The present invention is a deodorizing liquid containing an aqueous extract of roasted coffee bean chaff. Furthermore, the present invention is a deodorizing liquid containing both aqueous and ethanol extracts of roasted coffee bean chaff.

[0026] The deodorizing liquid can be obtained by bringing chaff separated from roasted coffee beans into contact with an extraction solvent to obtain an extract. If chaff, which is a solid component, remains in the deodorizing liquid, it will become difficult to handle, such as clogging when spraying from a spray bottle. Therefore, it is preferable to further filter the chaff to remove the solid component. As the extraction solvent, a liquid containing water is used to obtain the water extract. To obtain the water and ethanol extract, ethanol is also included as the extraction solvent in addition to water. Filtration can be performed using a suitable filter cloth that can remove the chaff.

[0027] Chaff is the thin outer layer of coffee beans, which peels off during roasting or remains in the grooves of the beans after roasting. Because chaff can cause off-flavors, it is often separated from the roasted coffee beans and discarded as waste. It is preferable to use chaff that has been sifted to remove fine particles. Removing the fine particles does not affect the deodorizing effect of the extract, but if the particle size is too small, it tends to float to the surface of the solvent and may not come into sufficient contact with the solvent, so it is preferable that the particle size be 1 mm or larger, and more preferably 2 mm or larger.

[0028] The preferred method for contacting the chaff with the extraction solvent is to allow the chaff and extraction solvent to stand in contact in any container. This method simplifies the extraction process. The temperature at which the chaff and extraction solvent are contacted can be, for example, 5 to 50°C or 30 to 50°C. Increasing the extraction temperature can shorten the extraction time. Alternatively, the temperature at which the chaff and extraction solvent are contacted can be 10 to 25°C. Furthermore, the temperature at which the chaff and extraction solvent are contacted can be room temperature without any heating or cooling operations. Extraction at room temperature eliminates the need for heating or cooling operations, thus simplifying the extraction process. In addition, components other than water or ethanol (referred to as "other components") may be added to the extraction solvent, as long as they do not inhibit the deodorizing effect of the chaff. However, it is preferable to omit the addition of other components as it increases the complexity of the process.

[0029] When bringing the chaff into contact with the extraction solvent, it is preferable to use a ratio of 70 to 300 parts by mass of extraction solvent per 100 parts by mass of chaff, more preferably 80 to 250 parts by mass of extraction solvent per 100 parts by mass of chaff, and even more preferably 80 to 210 parts by mass of extraction solvent.

[0030] When bringing the chaff into contact with the extraction solvent, the contact time is preferably 10 to 36 hours, and more preferably 18 to 30 hours.

[0031] The aforementioned water extract or water and ethanol extract has a strong deodorizing effect and may be diluted with any diluent. When diluting, it is preferable to include 1 to 10% by volume of the water extract or water and ethanol extract. Dilution can reduce the manufacturing cost of the deodorant.

[0032] When diluting the aforementioned water extract or water and ethanol extract, for example, the deodorizing liquid may contain 55-90% by volume of water and 5% or more but less than 68% by volume of ethanol. In such a formulation, the ethanol makes the deodorizing liquid more volatile. After spraying the deodorizing liquid, it becomes possible to dry the object to which the deodorizing liquid has been sprayed, such as clothing or other fabric products, or the indoor environment, more quickly.

[0033] When diluting the aforementioned water extract or water and ethanol extract, for example, the deodorizing liquid may contain 50 to 99% water by volume. Such a formulation is suitable for applications where the use of ethanol is undesirable. For example, it is suitable for users who are prone to skin irritation from ethanol. Although ethanol has less biotoxicity than other alcohols such as methanol, water is even less toxic.

[0034] The aforementioned dilution is preferably carried out by filtering the water extract or water and ethanol extract, and then diluting it with one or more liquids selected from the group consisting of water and ethanol so that the water extract or water and ethanol extract has a content of 1 to 10% by volume. During dilution, components other than water or ethanol may be added to the extent that the deodorizing effect of the chaff is not impaired.

[0035] The aforementioned aqueous extract or water and ethanol extract may be used undiluted.

[0036] The objects to which the deodorizing liquid can be applied, or the types of odors, are not particularly limited, but examples include indoor spaces, textile products including clothing, cigarette smoke, and seafood odors. Cigarette smoke and seafood odors can linger in rooms, adhere to textile products, and cling to hands and cooking utensils. By spraying the deodorizing liquid of the present invention, these odors can be efficiently eliminated.

[0037] The deodorizing liquid can be dispensed in a known spray container, such as a manual or electric spray container. The material, capacity, and dispensing method of the spray container are not particularly limited, but a manual spray container that can be held in one hand is preferred because it is easy to use. [Examples]

[0038] The present invention will be described in detail below with reference to examples. The examples shown below are merely limited examples of the present invention, and the technical scope of the present invention is not limited to the examples shown.

[0039] [Example 1] After roasting coffee beans, the chaff separated from the beans was classified using a sieve to adjust the particle size distribution of the chaff to 1 mm or larger. 50 g of the chaff, from which the fine powder had been removed, was placed in a container. 50 ml of room temperature water was added to the container, and the chaff was immersed in the water and left to stand for 24 hours to extract the components of the chaff into the water. The suspension of chaff and water was filtered, and only the liquid containing the extracted chaff components was taken out into a separate container to obtain the extract. This extract was mixed with water in a ratio of 5% by volume to 95% by volume, and this was used as the deodorizing liquid according to Example 1.

[0040] [Example 2] Chaff separated from coffee beans during roasting was classified using a sieve to adjust the particle size distribution of the chaff to 1 mm or larger. 50 g of the chaff, from which the fine powder had been removed, was placed in a container. 50 ml of water and 50 ml of ethanol (99.5% or higher) were added to the container, and the chaff was immersed in the liquid and allowed to stand for 24 hours to extract the components of the chaff into the liquid. The suspension of chaff, water, and ethanol was filtered, and only the liquid containing the extracted chaff components was taken into a separate container to obtain an extract. This extract was mixed with water (5% by volume), water (70% by volume), and ethanol (25% by volume) in a ratio to obtain the deodorizing liquid according to Example 2.

[0041] [Test 1] The deodorizing solution according to Example 1 was placed in a spray bottle and sprayed 2cc at a time onto the hands of a tester who had handled mackerel, squid, and crab. Before spraying the deodorizing solution, 30 panelists were asked to smell the tester's hands, and it was found that the tester's hands had a strong seafood odor. The panelists were then asked to smell the tester's hands once, and then again after each spray of the deodorizing solution, and the number of panelists who reported no longer smelling the seafood odor is summarized in the graph in Figure 1. In other words, Figure 1 is a histogram showing how many sprays it took for the 30 panelists to no longer smell the seafood odor.

[0042] The results are shown in Figure 1. All 30 panelists reported a slight fishy smell during the first taste test. However, from the second taste test onward, all 30 panelists reported not detecting any fishy smell at all.

[0043] [Exam 2] In parallel with the sensory evaluation in Test 1, the odor level of the hands of the tester who handled mackerel, etc., was measured before spraying the deodorizing liquid according to Example 1 and after spraying the deodorizing liquid 1 to 5 times. The odor level was measured using an odor level meter (model OMX-ADM, Handy Odor Monitor, Sato Shoji Co., Ltd.) with a gas concentration sensor installed at the nozzle tip. After zero-point calibration of the measurement nozzle for 10 minutes using an air purification unit, the nozzle was placed at the measurement site and measurements were taken. The measurement range of the meter is in arbitrary units, with an upper limit of 999 for the odor level. The results of measuring the odor level with this odor level meter are shown in Figure 2. The odor level in arbitrary units was 700 before spraying, 50 after the first spray, and 30 from the second spray onward, and the same value was maintained. It was clear that the fishy odor of seafood was eliminated by spraying the deodorizing liquid according to Example 1.

[0044] From the results above, it became clear that the deodorizing liquid according to Example 1 has extremely excellent deodorizing performance, capable of instantly eliminating the fishy smell of seafood, which is one of the typical malodors.

[0045] [Exam 3] A test was conducted on seafood in a polystyrene tray purchased from a supermarket using the same method as in Test 1. After opening the seafood packaging and removing the seafood, 2cc of the deodorizing solution according to Example 1 was sprayed onto the tray a total of five times. The same 30 panel members as in Test 1 were asked to smell the tray for a sensory evaluation. The results of this test are shown in Figure 3.

[0046] The results are shown in Figure 3. Of the 30 panelists, 20 (two-thirds) reported not detecting any fishy smell. In subsequent trials, all panelists no longer detected any fishy smell from the seafood.

[0047] [Exam 4] The odor level was measured before and after spraying using an odor level meter in the same manner as in Test 2. As a result, the odor level of the tray before spraying was 550, the odor level after the first spray was 30, and the odor level after the second spray was 8. It was clear that the odor level was significantly reduced by spraying the deodorizing liquid according to Example 1 onto the tray. As mentioned above, the odor level is an arbitrary unit.

[0048] The results above clearly show that the deodorizing liquid according to Example 1 can instantly and easily eliminate the fishy smell of seafood.

[0049] [Exam 5] The following tests were conducted assuming the odor of cigarette smoke permeating an indoor space or fabric products including clothing and curtains. The odor of cigarette smoke is one of the most common odors disliked by non-smokers.

[0050] A 15mm thick polystyrene foam container, 200mm cubed to simulate an indoor space, was used to place a handkerchief, representing a fabric product such as clothing. A lit cigarette, producing smoke, was then placed inside the polystyrene foam container, allowing the inside of the container and the handkerchief to be thoroughly permeated with the cigarette odor. The handkerchief, now saturated with the cigarette odor, was removed from the container and placed inside another polystyrene foam container of the same dimensions, with the lid closed to seal it. The odor level in this state was measured using the aforementioned odor level meter, and the resulting odor level (in arbitrary units) was 999.

[0051] The deodorizing liquid according to Example 1 was sprayed onto a handkerchief placed in the container at 2cc intervals for a total of 5 times. The odor level was measured 5 minutes after each spray. The odor level measurement was performed in the same manner as in Test 2. The results are shown in Figure 4. The odor level was 150 after the first spray, 50 after the second, 25 after the third, 15 after the fourth, and 8 after the fifth. It became clear that spraying the deodorizing liquid according to Example 1 significantly deodorizes the tobacco odor absorbed into a handkerchief, simulating fabric products such as curtains and clothing.

[0052] Furthermore, a similar investigation was conducted on a polystyrene foam container impregnated with cigarette odor, without placing a handkerchief impregnated with cigarette odor inside. The odor level of the container with the cigarette odor permeated inside was measured using an odor meter in the same manner as in Test 2. Subsequently, 2cc of the deodorizing liquid according to Example 1 was sprayed five times at 10-minute intervals. The odor level was measured five minutes after each spraying. The test results are shown in Figure 5.

[0053] As shown in Figure 5, before spraying the deodorizing liquid, the odor level (in arbitrary units) was above the upper limit of the measurement range of 999. After the first spray, it was 250, after the second spray, it was 80, after the third spray, it was 35, after the fourth spray, it was 20, and after the fifth spray, it was 10. From these results, it became clear that spraying the deodorizing liquid according to Example 1 significantly deodorizes the cigarette odor that has permeated a sealed container simulating an indoor space.

[0054] [Exam 6] In parallel with the odor intensity measurement in Test 5, a sensory test was also conducted with a panel of 30 people. In the sensory test, the deodorizing liquid according to Example 1 was sprayed onto a handkerchief or a polystyrene foam container, similar to Test 5. Figure 6 shows the number of sprays required for the 30 panelists to report that they could no longer smell the cigarette odor. Figure 6 is a histogram showing the number of sprays and the number of panelists who reported that they could no longer smell the cigarette odor. Figure 6 also shows the test results for polystyrene foam and handkerchiefs.

[0055] As is clear from Figure 6, in the case of the handkerchief, five panelists could no longer smell the cigarette odor after the first application, 25 panelists could no longer smell the cigarette odor after the second application, and all panelists could no longer smell the cigarette odor at all after the third application. In the case of the styrofoam container, no panelists could no longer smell the cigarette odor after the first application, but 10 panelists could no longer smell the cigarette odor after the second application, and all 30 panelists could no longer smell the cigarette odor at all after the third application.

[0056] From the results above, it is clear that the deodorizing liquid according to Example 1 has extremely excellent deodorizing performance and was able to instantly and easily deodorize fabric products and ingrained cigarette odors that are disliked by non-smokers and others. Therefore, it is clear that the deodorizing liquid according to Example 1 is a groundbreaking deodorizing liquid unlike any other.

[0057] [Exam 7] The effectiveness of the deodorizing liquid according to Example 1 was confirmed on athletic shoes that had been used for approximately 6 months and were emitting a strong odor due to sweat, etc. In this test, the odor level of the athletic shoes was measured using an odor level meter in the same manner as in Test 2. Before spraying the deodorizing liquid, the athletic shoes had an odor level (arbitrary unit) of 999, indicating an extremely unpleasant odor.

[0058] The deodorizing solution according to Example 1 was sprayed onto the athletic shoes at 2cc intervals of 10 minutes for a total of 5 times. The odor level was measured using an odor meter each time the deodorizing solution was sprayed, and a sensory test was conducted with a panel of 30 people. The results are shown in Figures 7 and 8.

[0059] Figure 7 shows the change in odor intensity after spraying the deodorizing liquid. The odor intensity (in arbitrary units) was 140 after the first spray, 70 after the second spray, 30 after the third spray, 15 after the fourth spray, and 6 after the fifth spray. The odor intensity decreased significantly in a short time after spraying the deodorizing liquid according to Example 1, clearly demonstrating that the deodorizing liquid according to Example 1 has an excellent deodorizing effect.

[0060] Figure 8 shows the results of a sensory test conducted in parallel with 30 participants. After the first application, 4 panelists no longer detected odors; after the second application, 20 panelists no longer detected odors; and after the third application, all panelists no longer detected any odors caused by sweat, etc. Thus, it was revealed that the deodorizing spray according to Example 1 is extremely effective in deodorizing athletic shoes and other items that emit strong odors caused by sweat, etc., and instantly eliminates unpleasant odors.

[0061] [Test 8] This section describes a deodorizing liquid that uses a mixture of water and ethanol as the medium, assuming situations where quick drying is required, such as with clothing or fabric products including indoor curtains.

[0062] Figure 9 is a graph showing the relationship between the ethanol concentration of the deodorizing liquid medium and its quick-drying performance. In this test, a 25g handkerchief was placed on a precision scale, and each deodorizing liquid with varying ethanol concentrations was sprayed onto the handkerchief until its weight increased by 5g. After that, the handkerchief was left to stand at room temperature, and the time it took for its weight to return to the original 25g was measured.

[0063] Figure 9 clearly shows that as the ethanol concentration increases, the time it takes for the handkerchief to return to its original weight decreases, indicating a significant improvement in quick-drying performance. In this case, the drying time is considerably longer when the ethanol concentration is less than 5% by volume. A preferred ethanol concentration is 5% by volume or higher, and more preferably 10% by volume or higher. The ethanol concentration of each deodorizing liquid was changed by increasing or decreasing 50 ml of ethanol in the deodorizing liquid manufacturing method according to Example 2.

[0064] As mentioned above, the quick-drying performance improves with increasing ethanol concentration. On the other hand, depending on the environment in which the deodorizing liquid is used, it is preferable to keep the concentration below 60% by mass (below 67.69% by volume), below 24% by volume, or between 20% and 30% by volume. If it is below 60% by mass, it will not be classified as a hazardous material under the Fire Service Act. If it is below 24% by volume, it is suitable when there is a possibility of air transport. By keeping it below 20% by volume, ignition by firearms, etc., can be prevented.

[0065] Using the deodorizing liquid according to Example 2, a sensory test was conducted with 30 panelists by spraying the deodorizing liquid according to Example 2 onto a handkerchief permeated with cigarette odor, in the same manner as in Test 5. In the sensory test, the number of sprays required for the panelists to no longer perceive the cigarette odor was investigated. The results are shown in Figure 10. Figure 10 also shows the results of a similar test conducted with the deodorizing liquid according to Example 1.

[0066] As is clear from Figure 10, the deodorizing liquid according to Example 2 yielded results almost identical to those of the deodorizing liquid in Example 1, where water was the main solvent, demonstrating that the deodorizing liquid according to Example 2 has superior deodorizing performance. The deodorizing liquid according to Example 2 also exhibited superior quick-drying properties, as verified in Figure 9.

[0067] As described above, the deodorizing liquid and deodorizing spray using the present invention were completed by discovering that chaff, a by-product of roasting coffee beans, has excellent deodorizing properties.

[0068] The deodorizing liquid and deodorizing spray of the present invention can quickly deodorize indoor spaces, fabric products including clothing, footwear including work shoes and athletic shoes, etc. Furthermore, it can quickly and easily deodorize odors such as cigarette smoke, which is disliked by non-smokers, and the smell of seafood, which is one of the most common malodors.

[0069] The main ingredient, chaff, is a by-product of coffee bean roasting, as mentioned earlier. Chaff was previously discarded as industrial waste, making this product extremely economical. Moreover, it possesses superior deodorizing performance not found in conventional deodorizing liquids, making it groundbreaking.

[0070] The deodorizing liquid and deodorizing spray of the present invention can be suitably used in the interior space of a toilet, the toilet bowl, etc. In that case, they exhibit a remarkable deodorizing effect, similar to the test results described above.

Claims

1. A deodorizing liquid containing a water extract of coffee bean chaff after roasting.

2. A deodorizing liquid containing water and ethanol extract of roasted coffee bean chaff.

3. The deodorizing liquid according to claim 1 or 2, wherein the deodorizing liquid contains 1 to 10% by volume of the water extract or water and ethanol extract.

4. The deodorizing liquid is the deodorizing liquid according to claim 3, wherein the deodorizing liquid contains 50 to 99% by volume of water.

5. The deodorizing liquid according to claim 3, wherein the deodorizing liquid contains 55 to 90% by volume of water and 5% or more and less than 68% by volume of ethanol.

6. A deodorizing spray containing the deodorizing liquid described in claim 1 or 2 in a container.

7. A step of obtaining an extract by contacting the chaff separated from roasted coffee beans with a liquid containing water or a liquid containing water and ethanol, A method for producing a deodorizing extract, comprising the step of filtering the extract to remove solid components.

8. A method for producing a deodorizing liquid, comprising the step of diluting the filtered extract described in claim 7 with one or more liquids selected from the group consisting of water and ethanol, such that the content of the filtered extract is 1 to 10% by volume.

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