Method for quantifying malodor, malodor quantification device, and malodor quantification program

Abstract

To provide an odor quantification method, an odor quantification device and an odor quantification program having excellent reproducibility and result handleability.SOLUTION: An odor quantification method for quantifying the odor of a sample to be evaluated, comprises: a step of sensory-evaluating odor before durability of the sample to be evaluated, selecting one or more odor names corresponding to the result of the sensory evaluation from a predetermined list of odor names, and determining the intensity of the odor of the one or more selected odor names; and a step of sensory-evaluating odor after durability of the sample to be evaluated, selecting one or more odor names corresponding to the result of the sensory evaluation from a predetermined list of odor names, and determining the intensity of the odor of the one or more selected odor names.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for quantifying off-odor, an apparatus for quantifying off-odor, and a program for quantifying off-odor.

Background Art

[0002] Personal care products such as cosmetics, detergents, pharmaceuticals, and quasi-drugs may produce an unpleasant odor due to deterioration over time.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In order to prevent the problem of unpleasant odor due to deterioration over time as described above, for example, at the stage of developing cosmetics, it is conceivable to subjectively evaluate the odor of the cosmetics after durability simulating deterioration over time in advance. As such sensory evaluations, an analytical sensory evaluation that is an analysis by a professional panel and a hedonic sensory evaluation that is a preference check by general consumers are conceivable.

[0004] However, in the above sensory evaluations, there is a problem that there are individual differences among evaluators and the reproducibility of the evaluations is low.

[0005] Therefore, the present invention provides a method for quantifying off-odor, an apparatus for quantifying off-odor, and a program for quantifying off-odor, which are excellent in reproducibility and result handling properties.

Means for Solving the Problems

[0006] Examples of aspects of the present invention include the following aspects.

[0007] 〈Aspect 1〉 An off-odor quantification method for quantifying the off-odor of a sample to be evaluated, including: subjectively evaluating the off-odor of the sample to be evaluated before durability, selecting one or more off-odor names corresponding to the result of the sensory evaluation from a predetermined off-odor name list, and determining the intensity of the off-odor of the selected one or more off-odor names, and Performing a sensory evaluation on the off-odor of the sample to be evaluated after durability, selecting one or more off-odor names corresponding to the result of the sensory evaluation from a predetermined off-odor name list, and determining the intensity of the off-odor of the selected one or more off-odor names. <Aspect 2> The method according to aspect 1, further comprising calculating a difference between the intensity of the off-odor of the selected one or more off-odor names before durability and the intensity of the off-odor of the selected one or more off-odor names after durability. <Aspect 3> The method according to aspect 1 or 2, wherein the off-odor name list includes at least one off-odor name selected from at least the following: Base odor, irritating odor, sweet off-odor, oily odor, acidic odor, unclean odor, and perfume odor. <Aspect 4> An off-odor quantification device for quantifying the off-odor of a sample to be evaluated, having the following: An input unit into which the results of the sensory evaluation of the off-odor of the sample to be evaluated before and after durability are input, where the results are one or more off-odor names selected from a predetermined off-odor name list and the intensity of the off-odor of the selected one or more off-odor names. A display unit for displaying the obtained off-odor names and the intensity of the off-odor before and after durability. <Aspect 5> Further having a control unit for calculating a difference between the intensity of the off-odor of the obtained off-odor name before durability and the intensity of the off-odor of the obtained off-odor name after durability, and The display unit further displays the difference. The device according to aspect 4. <Aspect 6> An off-odor quantification program for causing a processor to perform the following steps to quantify the off-odor of a sample to be evaluated: Causing the results of the sensory evaluation of the off-odor of the sample to be evaluated before and after durability to be obtained from the input unit, where the results are one or more off-odor names selected from a predetermined off-odor name list and the intensity of the off-odor of the selected one or more off-odor names. Causing the obtained off-odor names and the intensity of the off-odor before and after durability to be displayed on the display unit. <Aspect 7> The program according to aspect 6, which further causes the processor to perform the following steps: Calculating the difference between the intensity of the off-odor of the off-odor name before durability obtained and the intensity of the off-odor of the off-odor name after durability obtained, and Further causing the display unit to display the difference.

Advantages of the Invention

[0008] According to the off-odor quantification method, off-odor quantification device, and off-odor quantification program of the present invention, by selecting the off-odor of the sample to be evaluated from a predetermined off-odor name list, it is possible to suppress variations in evaluations by evaluators, and by evaluating the off-odor of the sample to be evaluated before and after durability, it is possible to record in detail the occurrence status of the off-odor.

[0009] Further, according to the off-odor quantification method, off-odor quantification device, and off-odor quantification program of the present invention, by accumulating results, it becomes possible to perform searches based on off-odor names, evaluators, results, differences in results, etc., and it can be useful for the development of samples to be evaluated such as cosmetics.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0011] 〈Off-odor Quantification Method〉 The method for quantifying off-odor of a sample to be evaluated according to the present invention includes the following: Performing sensory evaluation on the off-odor of the sample to be evaluated before durability, selecting one or more off-odor names corresponding to the result of the sensory evaluation from a predetermined off-odor name list, and determining the intensity of the off-odor of the selected one or more off-odor names, and Performing sensory evaluation on the off-odor of the sample to be evaluated after durability, selecting one or more off-odor names corresponding to the result of the sensory evaluation from a predetermined off-odor name list, and determining the intensity of the off-odor of the selected one or more off-odor names.

[0012] In addition, in one aspect of the method for quantifying off-odor of the present invention, it further includes calculating the difference between the intensity of the off-odor of the selected one or more off-odor names before durability and the intensity of the off-odor of the selected one or more off-odor names after durability.

[0013] Here, in the present invention, "off-odor" means an unpleasant odor among the odors of the sample to be evaluated. Also, in the present invention, the "sample to be evaluated" may be a personal care product such as a cosmetic, a detergent, a pharmaceutical, or a quasi-drug.

[0014] As described above, according to the method for quantifying off-odor of the present invention, the variation in evaluation by evaluators can be suppressed, and the occurrence status of off-odor can be recorded in detail. In particular, by calculating the intensity difference of off-odor before and after durability, the understanding of the occurrence status of off-odor can be deepened.

[0015] The list of off-odors evaluated by the method of the present invention can include at least one off-odor name selected from at least the following, but is not limited to these off-odors and the off-odors described in FIGS. 1 and 2: Base odor, irritating odor, sweet off-odor, oily odor, acidic odor, unclean odor, and perfume odor.

[0016] The durability of the sample to be evaluated can be carried out for an arbitrary period, for example, for 1 day or more, 1 week or more, 1 month or more, 2 months or more, 3 months or more, 6 months or more, or 1 year or more. Further, the durability conditions can be carried out under heating conditions, light exposure conditions, shaking conditions, standing conditions, cooling conditions, or a combination thereof.

[0017] The method for quantifying off-odor of the present invention can be carried out using a sheet as shown in FIG. 1, for example. Here, in the sheet of FIG. 1, a single evaluator (evaluator X) fills in evaluations of off-odor before and after durability for a plurality of samples to be evaluated (cosmetics A, B, and C), and based on the filled-in values, the difference between the intensity of off-odor after each durability and the intensity of off-odor during durability is filled in. Note that in the sheet of FIG. 1, it is premised that heat durability, light durability, and heat + light durability are carried out for 1 week as durability conditions.

[0018] Further, the method for quantifying off-odor of the present invention can be carried out using a sheet as shown in FIG. 2, for example. Here, in the sheet of FIG. 2, a plurality of evaluators (evaluators X, Y, and Z) fill in evaluations of off-odor before and after durability for a single sample to be evaluated (cosmetic A), and based on the filled-in values, the difference between the intensity of off-odor after each durability and the intensity of off-odor during durability is filled in. Note that in the sheet of FIG. 2, similar to the sheet of FIG. 1, it is premised that heat durability, light durability, and heat + light durability are carried out for 1 week as durability conditions.

[0019] <Quantifying Off-Odor Device and Program> The off-odor quantifying device of the present invention for quantifying the off-odor of a sample to be evaluated has the following: An input unit into which the results of sensory evaluations of off-odor before and after durability of the sample to be evaluated are input, where the results are one or more off-odor names selected from a predetermined off-odor name list and the intensity of off-odor of the one or more selected off-odor names. A display unit that displays the obtained off-odor names and the intensities of the off-odor before and after durability.

[0020] In one aspect of this device, It further has a control unit that calculates the difference between the intensity of the off-odor of the obtained off-odor name before durability and the intensity of the off-odor of the obtained off-odor name after durability, and the display unit further displays the difference.

[0021] Specifically, for example, as shown in FIG. 3, in the off-odor quantification device 10 of the present invention, an input unit (12), a display unit (13), and a control unit (14) are connected to each other via signal lines, and an evaluator (12a) can input an evaluation result via the input unit (12). Here, this control unit (14) may include a storage, a memory, a processor, and the like.

[0022] The off-odor quantification program of the present invention causes a processor to perform the following steps to quantify the off-odor of a sample to be evaluated: acquiring, from the input unit, the results of sensory evaluations of the off-odor of the sample to be evaluated before and after durability, where the results are one or more off-odor names selected from a predetermined off-odor name list and the intensity of the off-odor of the selected one or more off-odor names, causing the display unit to display the acquired off-odor name and the intensities of the off-odor before and after durability.

[0023] In one aspect of this program, the processor is further caused to perform the following steps: calculating the difference between the intensity of the off-odor of the obtained off-odor name before durability and the intensity of the off-odor of the obtained off-odor name after durability, and causing the display unit to further display the difference.

[0024] Specifically, for example, the off-odor quantification program of the present invention can be implemented as shown in the flowchart of FIG. 4. That is, the process is started (S41), the results of sensory evaluations of the off-odor of the sample to be evaluated before and after durability are acquired by the processor from the input unit (S42), and the acquired off-odor name and the intensities of the off-odor before and after durability are displayed on the display device (S43), and then the process can be terminated (S49).

[0025] Also, for example, the off-odor quantification program of the present invention can be implemented as shown in the flowchart of FIG. 5. That is, the process is started (S51), the results of the sensory evaluation of the off-odor before and after durability of the sample to be evaluated are acquired from the input unit by the processor (S52), the processor calculates the difference between the intensity of the off-odor before durability and the intensity of the off-odor after durability (S53), and the acquired off-odor name, the intensities of the off-odor before and after durability, and the difference in the intensities of the off-odor before and after durability are displayed on the display device (S54), and then the process can be terminated (S59).

[0026] In the device and program of the present invention, the input unit may be a touch panel, a keyboard, etc., and the display unit may be a display, etc. The processor has one or more CPUs (Central Processing Unit) and its peripheral circuits and can execute various processes. The memory may be, for example, a volatile semiconductor memory (e.g., RAM) and a non-volatile semiconductor memory (e.g., ROM), and the storage device may be, for example, a hard disk drive (HDD), a solid state drive (SSD), or an optical recording medium. The memory and / or the storage device can store programs executed in the processor, various data used when various processes are executed by the processor, etc.

[0027] The device of the present invention may be a personal computer, a smartphone, etc., and the program of the present invention may be applicable to a personal computer, a smartphone, etc.

[0028] For details of the device and program of the present invention, reference can be made to the description regarding the method of the present invention.

Claims

1. A method for quantifying the off-odor of a sample to be evaluated, comprising: An evaluator subjectively evaluates the off-odor of the sample to be evaluated before durability, the evaluator selects one or more off-odor names corresponding to the result of the subjective evaluation from a predetermined off-odor name list, and the evaluator determines the intensity of the off-odor of the selected one or more off-odor names, and The evaluator subjectively evaluates the off-odor of the sample to be evaluated after durability, the evaluator selects one or more off-odor names corresponding to the result of the subjective evaluation from a predetermined off-odor name list, and the evaluator determines the intensity of the off-odor of the selected one or more off-odor names.

2. The method according to claim 1, further comprising calculating a difference between the intensity of the off-odor of the selected one or more off-odor names before durability and the intensity of the off-odor of the selected one or more off-odor names after durability.

3. The method according to claim 1 or 2, wherein the off-odor name list includes at least one off-odor name selected from at least the following: Base odor, irritating odor, sweet off-odor, oily odor, acidic odor, unclean odor, and perfume odor.

4. An off-odor quantification device for quantifying the off-odor of a sample to be evaluated, comprising: An input unit for inputting the results of subjective evaluations of the off-odor of the sample to be evaluated before and after durability by an evaluator, where the results are one or more off-odor names selected by the evaluator from a predetermined off-odor name list, and the intensity of the off-odor of the selected one or more off-odor names determined by the evaluator, A display unit for displaying the obtained off-odor names and the intensities of the off-odor before and after durability.

5. The device further comprises a control unit for calculating a difference between the intensity of the off-odor of the obtained off-odor name before durability and the intensity of the off-odor of the obtained off-odor name after durability, and The display unit further displays the difference. The device according to claim 4.

6. A program for quantifying the off-odor of a sample to be evaluated, causing a processor to perform the following steps: Causing an input unit to acquire evaluation results by an evaluator of sensory evaluation of off-odor before and after durability of a sample to be evaluated, where the results are one or more off-odor names selected by the evaluator from a predetermined off-odor name list, and the intensity of the off-odor of the one or more selected off-odor names determined by the evaluator. Causing the display unit to display the acquired off-odor names and the intensities of the off-odor before and after durability.

7. The program according to claim 6, further causing the processor to perform the following steps: Causing the difference between the intensity of the off-odor of the off-odor name before durability and the intensity of the off-odor of the off-odor name after durability to be calculated, and Causing the display unit to further display the difference.

Images