향의 강도를 평가하는 새로운 방법
New Method for Measuring the Intensity of Scent
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화장품의 향은 제품에 대한 소비자의 수용성을 결정하는 데 없어서는 안 될 역할을 한다. 관능 시험은 자가 평가와 전문가에 의한 평가로 구분될 수 있다. 패널리스트 또는 전문가들의 감각을 통한 평가를 바탕으로 하는데, 주로 인지된 변수들에 대한 정보 통계적으로 분석한다. 그러나 관능 평가는 신체 조건, 후각 피로 등의 요인에 영향을 받기 때문에 재현성에 문제가 있는 경우가 있다. 이러한 점을 보완하기 위해 향을 정량적으로 평가할 수 있는 전자 코(E-nose) 센서가 적용된 POLFA 라고 명명된 신규 기기를 적용하였다. 이러한 기기를 활용하면 휘발성 성분의 대략적인 농도 및 향기 강도를 추정할 수 있다. 향의 강도를 측정하기 위한 새로운 방법으로 POLFA의 유용성을 관찰하기 위해 기존의 감성 평가, POLFA를 이용한 기기평가 및 두 방법 간의 상관성을 분석하였다. EEMCO guidance를 응용한 감성 평가와 POLFA를 이용한 기기평가 결과, 모든 평가 시점(제품 사용 전, 사용 직후, 사용 5분 후 사용 2시간 후, 사용 4시간 후, 사용 8시간 후)에서 통계적으로 유의한 결과가 관찰되었다. 감성 평가와 POLFA 기기를 이용한 측정 값 사이의 상관성 분석 결과, 평가 방법 간의 높은 상관성(R = 0.854, p < 0.01)이 있음을 확인하였다. 기기를 이용한 새로운 평가 방법은 패널의 주관적인 판단에 의해 감성 평가의 결과가 왜곡될 수 있는 점을 보완할 수 있는 도구로서 의미가 있다고 할 수 있다. 앞으로 더 많은 데이터 축적을 통해 사용 편의성, 재현성 및 정확성을 갖춘 도구로 발전을 기대해 본다.
Abstract
The scent of cosmetics plays an indispensable role in determining the consumer's acceptance of the product. Sensory tests can be divided into self-evaluation and expert evaluation. It is based on the evaluation through the senses of panelists or experts, and mainly statistically analyzes the information on the perceived variables. However, since sensory test is affected by factors such as physical condition and olfactory fatigue, reproducibility may be problematic. To compensate for this, a new device named POLFA applied with an E-nose sensor that can quantitatively evaluate fragrance was applied. Using these device, approximate concentrations of volatile components and fragrance strength can be estimated. In order to observe the usefulness of POLFA as a new method for measuring the intensity of fragrance, the existing sensory test, device evaluation using POLFA, and correlation between the two methods were analyzed. As a result of sensory test using EEMCO guidance and device evaluation using POLFA, statistically significant results were observed at all evaluation time points (before use, immediately after use, 5 min after use, 1 h after use, 2 h after use, 4 h after use, and 8 h after use). As a result of the correlation analysis between the sensory test and the measured value using the POLFA device, it was confirmed that there was a high correlation(R=0.854, p<0.01) between the two evaluation results. The new evaluation method using a device is meaningful as a tool that can compensate for the fact that the result of sensory test can be distorted by the panel's subjective judgment. In the future, it is expected to develop into a tool with ease of use, reproducibility, and accuracy through the accumulation of more data.
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