Butyric acid adsorption method and butyric acid adsorbent

Abstract

To provide a butyric acid adsorption method and a butyric acid adsorbent which search a base material having adsorption ability exceeding tissue paper (cellulose) that is frequently used as a base material capable of adsorbing a butyric acid emitting characteristic disagreeable odor from a food waste, and can effectively adsorb a butyric acid while effectively recycling the food waste.SOLUTION: A butyric acid adsorption method adsorbs a butyric acid using coffee grounds. In the butyric acid adsorption method, 100 mg / 10 mL to 800 mg / 10 mL of coffee grounds are used. A butyric acid adsorbent contains coffee grounds, and a butyric acid is adsorbed by the coffee grounds. The butyric acid adsorbent contains 100 mg / 10 mL to 800 mg / 10 mL of coffee grounds.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a butyric acid adsorption method and a butyric acid adsorbent.

Background Art

[0002] Butyric acid is known as a substance that emits a characteristic unpleasant odor and is one of the causative substances of unpleasant odors such as urine odor and fecal odor that give people discomfort.

[0003] Therefore, conventionally, several adsorbents having the effect of adsorbing butyric acid have been devised.

[0004] Among them, a deodorant and a deodorizing method for adsorbing butyric acid using cellulose, which is the main raw material of tissue paper commonly used in daily life, have been developed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the present invention, as a material capable of adsorbing butyric acid that emits a characteristic unpleasant odor, a material having an adsorption ability exceeding that of tissue paper (cellulose) commonly used in daily life is searched for from food waste, and while effectively reusing food waste, it is an object to develop a butyric acid adsorption method and a butyric acid adsorbent capable of effectively adsorbing butyric acid.

Means for Solving the Problems

[0007] In the present invention according to claim 1, in the butyric acid adsorption method, The concentration of coffee grounds added to water containing butyric acid is 100 mg / 10 mL to 800 mg / 10 mL it was decided to adsorb butyric acid using coffee grounds.

[0009] Also, Claim 2 In the present invention related to Claim 2 , in the butyric acid adsorbent, The concentration of coffee grounds added to water containing butyric acid is 100 mg / 10 mL to 800 mg / 10 mL it was decided to adsorb butyric acid with coffee grounds.

Advantages of the Invention

[0011] In the present invention, in the butyric acid adsorption method and the butyric acid adsorbent, since coffee grounds are used to adsorb butyric acid, coffee grounds as food waste can be effectively reused, and butyric acid can be adsorbed better than tissue paper (cellulose).

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0013] The specific configurations of the butyric acid adsorption method and the butyric acid adsorbent according to the present invention will be described below.

[0014] In the present invention, first, an experiment was conducted to search for a material having an adsorption capacity exceeding that of cellulose, which is a raw material of tissue paper, from food waste.

[0015] In the experiment, impurities were removed after culturing, and analysis by HPLC (high performance liquid chromatography) was performed to examine the remaining amount of butyric acid.

[0016] In this experiment, butyric acid was added to sterilized distilled water, and samples with sterilized food waste added, samples with cellulose (tissue paper) added, and samples with no addition were cultured at 37°C for 24 hours. The food waste and cellulose were added at concentrations of 100 mg / 10 mL and 200 mg / 10 mL.

[0017] As a result, it was found that coffee grounds, as food waste, have a butyric acid adsorption capacity exceeding that of cellulose.

[0018] That is, as shown in Fig. 1, in the case of no addition, 80 μg / mL of butyric acid remained, while in the case of adding 100 mg / 10 mL of cellulose, 77 μg / mL (96.3 (77 / 80)%) of butyric acid remained, and in the case of adding 200 mg / 10 mL of cellulose, 76.1 μg / mL (95.1 (76.1 / 80)%) of butyric acid remained.

[0019] Thus, it can be seen that in the case of adding 100 mg / 10 mL of cellulose, it has a butyric acid adsorption capacity reduced by 3.7 (1 - 77 / 80)%, and in the case of adding 200 mg / 10 mL of cellulose, it has a butyric acid adsorption capacity reduced by 4.9 (1 - 76.1 / 80)%.

[0020] In contrast, in the case of adding 100 mg / 10 mL of coffee grounds, 73 μg / mL (91.3 (73 / 80)%) of butyric acid remained, and in the case of adding 200 mg / 10 mL of coffee grounds, 70.2 μg / mL (87.8 (70.2 / 80)%) of butyric acid remained.

[0021] Thus, it can be seen that in the case of adding 100 mg / 10 mL of coffee grounds, it has a butyric acid adsorption capacity reduced by 8.7 (1 - 73 / 80)%, and in the case of adding 200 mg / 10 mL of coffee grounds, it has a butyric acid adsorption capacity reduced by 12.2 (1 - 70.2 / 80)%.

[0022] From the experimental results shown in Fig. 1, it was found that coffee grounds have a butyric acid adsorption capacity exceeding that of cellulose.

[0023] Moreover, for cellulose, even when the addition amount was increased from 100 mg / 10 mL to 200 mg / 10 mL, it was approximately 1.01 (77 / 76.1) times and a 1% increase, while for coffee grounds, when the addition amount was increased from 100 mg / 10 mL to 200 mg / 10 mL, it was found to be approximately 1.04 (73 / 70.2) times and a 4% increase.

[0024] Thus, among food wastes, coffee grounds have the ability to adsorb butyric acid, and it can be expected that further improvement in the butyric acid adsorption ability can be achieved by increasing the addition amount thereof.

[0025] Therefore, further experiments were conducted by changing the addition amount of coffee grounds. The experiment was the same as the previous experiment, in which impurities were removed after culturing, and analysis by HPLC (high performance liquid chromatography) was performed to examine the remaining amount of butyric acid. In this experiment, butyric acid was added to sterilized distilled water, and sterilized coffee grounds were added at 0 mg / 10 mL (no addition), 400 mg / 10 mL, 800 mg / 10 mL, and 1200 mg / 10 mL.

[0026] As a result, as shown in Figure 2, in the case of no addition, 90.3 μg / mL of butyric acid remained, while in the case of adding 400 mg / 10 mL of coffee grounds, 80.6 μg / mL (89.3 (80.6 / 90.3)%) of butyric acid remained, in the case of adding 800 mg / 10 mL of coffee grounds, 84.7 μg / mL (93.8 (84.7 / 90.3)%) of butyric acid remained, and in the case of adding 1200 mg / 10 mL of coffee grounds, 89.3 μg / mL (98.9 (89.3 / 90.3)%) of butyric acid remained.

[0027] From this, it can be seen that in the case of adding 400 mg / 10 mL of coffee grounds, it has a butyric acid adsorption ability reduced by 10.7 (1 - 80.6 / 90.3)%, in the case of adding 800 mg / 10 mL of coffee grounds, it has a butyric acid adsorption ability of 6.2 (1 - 84.7 / 90.3)%, and in the case of adding 1200 mg / 10 mL of coffee grounds, it has a butyric acid adsorption ability reduced by 1.1 (1 - 89.3 / 90.3)%.

[0028] Thus, it was found that in coffee grounds, the butyric acid adsorption ability varies greatly depending on the addition concentration.

[0029] Moreover, when the addition concentration of cellulose was 100 mg / 10 mL, 200 mg / 10 mL, or the addition concentration of coffee grounds was 1200 mg / 10 mL, the butyric acid adsorption capacity was less than 5%. In contrast, when the addition concentration of coffee grounds was 100 mg / 10 mL, 200 mg / 10 mL, 400 mg / 10 mL, or 800 mg / 10 mL, the butyric acid adsorption capacity was 5% or more, and it was found to have a butyric acid adsorption capacity exceeding that of cellulose. In particular, when the addition concentration of coffee grounds was 200 mg / 10 mL or 400 mg / 10 mL, the butyric acid adsorption capacity was 10% or more, and it was found to have a butyric acid adsorption capacity significantly exceeding that of cellulose.

[0030] From the above description, it can be seen that coffee grounds have the ability to adsorb butyric acid, can be used as a butyric acid adsorption method for adsorbing butyric acid using coffee grounds, and can also be used as a butyric acid adsorbent containing coffee grounds and adsorbing butyric acid with coffee grounds.

[0031] Thus, in the present invention, in the butyric acid adsorption method and the butyric acid adsorbent, since butyric acid is adsorbed using coffee grounds, coffee grounds as food waste can be effectively reused, and butyric acid can be adsorbed better than tissue paper (cellulose).

[0032] In particular, when coffee grounds of 100 mg / 10 mL to 800 mg / 10 mL are used, butyric acid can be adsorbed well. Furthermore, when coffee grounds of 200 mg / 10 mL to 400 mg / 10 mL are used, butyric acid can be adsorbed more remarkably well.

[0033] And by adsorbing butyric acid using the butyric acid adsorption method or the butyric acid adsorbent according to the present invention, specific unpleasant odors such as urine odor and fecal odor emitted by butyric acid can be suppressed.

[0034] For example, as one of the major burdens on caregivers and care recipients, which is also a social problem in the aging society we are facing, there is an unpleasant odor caused by butyric acid such as the urine odor and fecal odor emitted from sanitary products such as diapers and portable toilets. However, the unpleasant odor caused by this butyric acid can be suppressed by using the butyric acid adsorption method and the butyric acid adsorbent according to the present invention, and it can greatly contribute to reducing the burden on caregivers and care recipients.

Claims

**Claim 1**: A method for adsorbing butyric acid, characterized by adsorbing butyric acid using coffee grounds with a concentration of 100 mg / 10 mL to 800 mg / 10 mL in water containing butyric acid. **Claim 2**: A butyric acid adsorbent, characterized by adsorbing butyric acid with coffee grounds having a concentration of 100 mg / 10 mL to 800 mg / 10 mL in water containing butyric acid.

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