• 센서학회지
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• 제27권2호
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• pp.118-125
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• 2018

An evaluation system for an electronic-nose concept using three types of metal oxide gas sensors that react similarly to the human olfactory cells was constructed for the quantitative and qualitative evaluation of aroma fragrances. Four types of aroma fragrances (lavender, orange, jasmine, and Roman chamomile), which are commonly used in aromatherapy, were evaluated. All the gas sensors reacted remarkably to the aroma fragrances and the good correlation of r=0.58-0.88 with the aromatic odor intensities by olfaction was confirmed. From the results of the analysis of an electronic-nose concept for classifying the characteristics of aroma oil fragrances, aroma oils could be classified using the fragrance characteristics and oil extraction methods with the cumulative variability contribution rate of 95.65% (F1: 69.65%, F2: 26.03%) by principal component analysis. In the pattern recognition based on the artificial neural network, the four aroma fragrances were 100% recognized through the training data of 56 cases (70%) out of 80 cases, and the pattern recognition rate was 57.1%-71.4% through the validation and testing data of 24 cases (30%). The pattern recognition success rate through all confusion matrices was 82.1%, indicating that the classification of aroma oil fragrances using the three types of gas sensors was successful.

• 감성과학
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• 제6권2호
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• pp.17-20
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• 2003

판매직에 종사하는 여성을 대상으로 100%의 Basil oil, Lavender oil, Lemon oil, Jasmin oil, Ylang-ylang oil (KIMEX co. Ltd), Skatole의 총 6가지 종류의 천연향을 사용하여 자극하였을 때의 상호 정보량을 분석, 비교하였다. 그 결과, 선호도가 낮은 Basil과 Skatole을 자극할 때 무향에 비해 상호 정보량이 많고, 향간의 비교에서도 선호도가 낮은 향에 대한 상호 정보량이 선호도가 높은 향에 비해 더 많음을 보여주었다. 이는 뇌에서 상호 정보량이 향에 대한 선호도와 관련이 있고, 특히 선호도가 낮은 향의 경우, 정보량의 증가 경향이 확인되었다.

• 인간식물환경학회지
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• 제24권2호
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• pp.137-152
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• 2021

Background and objective: This study was carried out to investigate and analyze the preference for plant fragrance and the psychological effects of a agro-healing activity in 101 firefighters aged 39.71 ± 10.94. Methods: For the psychological evaluation, post-traumatic stress symptoms, Korean occupational stress scale short form (KOSS-SF), emotional intelligence, and job satisfaction were surveyed on the Likert scale. For the preference for plant fragrances, 20 ㎕ of commercially available essential oils from four plant species (Mentha spp., Lavandula spp., Citrus limon, C. sinensis) were absorbed into each test paper and provided to the participants. Results: The rate of post-traumatic stress symptoms was high at 37.6% of the firefighters surveyed.. C. limon fragrance had the highest preference among the four plant fragrances, followed by C. sinensis > Mentha spp. > Lavandula spp. with statistically significant difference (F = 14.256, p < .001). The lower their age, income, and position, and higher the education level, the higher the preference for plant fragrances. And the administrative group had higher preference for plant fragrances than field group. In addition, as a result of examining the correlation between job satisfaction, preference for plant fragrance, post-traumatic stress, emotional intelligence, and job stress for fire-fighters, the higher the job satisfaction, the higher the fragrance preference and emotional intelligence, and the lower the post-traumatic stress and job stress. Conclusion: Therefore, installing a garden using botanical fragrances at workplaces that firefighters can easily access will improve job satisfaction and relieve stress. It can be concluded that applying the fragrance of plants to the healing farming activities at the fire-fighter's workplace can increase the usefulness of the healing activities.

• 감성과학
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• 제11권3호
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• pp.427-439
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• 2008

향수제품의 향에 적합한 색을 향수병과 포장지에 적용함으로써, 제품의 향을 소비자들에게 효과적으로 전달할 수 있다. 이에 본 연구는 두 개의 실험연구를 통해 색과 향의 교차-양상 연상관계를 조사하였다. 첫 번째 실험에서는 현재 시장에 출시되어 있는 약 200여개 향수병의 색을 분석하여 향의 종류에 따른 차별화된 색채 디자인 패턴을 발견하였다. 두 번째 실험에서는 국내 소비자들을 대상으로 향과 색의 대응관계를 조사하였다. 향수병을 볼 수 없는 상황에서 피실험자들에게 세 가지 향수제품의 향을 맡은 후 연상되는 색을 선택하게 하였다. 그 결과 세 가지 향수제품 모두 차별화된 색상(hue) 대응이 이루어졌고, 선정된 색상은 실제 향수병의 색상과 상당히 유사한 색상 영역에 분포하였다. 또한 향수제품의 세 가지 향 노트(상향, 중향, 하향)에 따라 연상되는 색의 현저한 톤(tone) 변화를 발견하였다. 위의 두 가지 실험을 통해 시중에 판매되고 있는 향수제품에 있어 향과 색 간의 뚜렷한 교차-양상 연상관계가 있음을 제안하였다.

• Bulletin of the Korean Chemical Society
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• 제34권6호
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• pp.1703-1707
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• 2013

A fast and simple sampling and sample preparation device, (NTD) has been developed and applied to sample and analyze volatile components from ground coffee beans. Coffee fragrances and other volatile organic compounds (VOCs) were sampled by the NTD and then analyzed by gas chromatograph-mass spectrometry (GC/MS). Divinylbenzene (DVB) particles (80/100 mesh size) were the sorbent bed of the NTD. More than 150 volatile components were first identified based on the database of the mass library and then finally 30 fragrances including caffeine were further confirmed by comparing experimental retention indices (i.e. Kovat index) with literature retention indices. Total sampling time was 10 minutes and no extra solvent extraction and/or reconstitution step need. Straight n-alkanes (C6-C20) were used as retention index probes for the calculation of experimental retention indices. In addition, this report suggests that an empty needle can be an alternative platform for analyzing polymers by pyrolysis-GC/MS.

• 분석과학
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• 제17권1호
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• pp.85-89
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• 2004

라일락 꽃 향기 성분의 특성을 고체상 포집 용매추출법과 기체크로마토그래피 이온 포집형 질량분석법으로 연구하였다. 라일락 품종에 따라 향기성분의 조성이 현저한 차이를 보였다. 백색 라일락 꽃의 경우 벤즈알데히드, 페닐 아세트알데히드 및 알파-파네센인데 비하여 보라색 라일락 꽃은 벤즈알데히드, 알파-피넨 및 오시멘이 주된 향기성분으로 발견되었다. 라일락 꽃 향기성분 중 알파-피넨의 거울상 이성질체의 본질을 분석한 결과 ( )형태임을 알 수 있었다.

• 원예과학기술지
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• 제34권3호
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• pp.472-487
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• 2016

This study aimed to determine the effects of floral fragrances on human brain waves and moods. A total of 44 subjects participated in this experiment. Group 1 consisted of 11 male and 14 female college students with a mean age of 24.5 years (${\pm}2.23$) and Group 2 consisted of 10 males and 9 females with a mean age of 54.3 years (${\pm}2.98$). Subjects were exposed to floral fragrances of Rosa hybrida, 'Hera' (hereafter referred to as "rose"), Cymbidium faberi (hereafter referred to as "orchid"), or odorless control flowers (hereafter referred to as "control"). Experiments took place in three rooms (rose, orchid, and control). Electroencephalographs (EEGs) were recorded during exposure to the odors and the data were processed using quantitative electroencephalographic (QEEG) techniques. The changing EEG patterns were analyzed by brain mapping and compressed spectral arrays, and the subjects' preferences (hedonic evaluations) were quantified with an A1 index. Increased activation of absolute alpha waves was verified on six of the eight EEG channels, with the right frontal and left occipital lobes exhibiting no changes and the left parietal region showing the greatest activation. According to the QEEG measurements in the electrode sites over the frontal, temporal, parietal, and occipital lobes, the strongest absolute alpha waves were induced in the parietal lobes, followed by the temporal lobes, with the other lobes showing no significant changes. On brain maps, the orchid fragrance induced greater absolute alpha and absolute mid-beta activities compared with the rose and control fragrances, and the rose fragrance induced high absolute mid-beta activation. To identify emotional responses to floral fragrances, the subjects were requested to fill in a questionnaire and the resulting odor-related emotional descriptors were analyzed using semantic differential and factor analysis. Principal component analysis identified "elegant" as the first principal component describing the floral fragrance, followed by "refreshing" and "aromatic." The subjects gave orchid higher scores for "elegant" and "refreshing," while finding rose more "aromatic." Differences in hedonic evaluation revealed by the A1 index appeared in the 65-115 sec range of scent exposure time. The subjects with ages of around 50 years showed olfactory preferences throughout the entire experimental time of 160 sec, most markedly in the later time segment (115-165 sec), showing an increasing preference with increasing exposure time. We conclude that rose fragrance can improve concentration by creating an aromatic environment conducive to a concentrated and calm state of mind, and orchid fragrance can make people feel pampered and relaxed by creating an elegant and refreshing environment.

• Bulletin of the Korean Chemical Society
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• 제23권11호
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• pp.1647-1650
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• 2002

• 대한화학회지
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• 제25권5호
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• pp.334-338
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• 1981

• 대한환경공학회지
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• 제36권12호
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• pp.858-864
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• 2014

생물활성탄(BAC)과 안트라사이트 biofilter에서의 공탑 체류시간(EBCT) 및 수온의 변화에 따른 8종의 합성 향물질류의 생물분해 특성을 평가하였다. 수온 $7^{\circ}C$와 $18^{\circ}C$에서 EBCT를 5분~15분까지 변화시켜 실험하였다. 생물활성탄 공정에서 합성 향물질류 8종의 생물분해율은 EBCT와 수온에 따라 큰 영향을 받았으며 EBCT와 수온이 증가할수록 생물분해율이 증가하였으며, 합성 향물질류의 종류에 따른 생물활성탄 공정에서의 생물분해율은 대환 사향류인 pentalide와 ambrettolide가 가장 높았으며, 다환 사향류인 DPMI와 ADBI가 가장 낮았다. 합성 향물질류 8종에 대한 BAC 공정에서의 생물분해 속도상수($k_{bio}$)는 수온이 $7^{\circ}C$에서 $18^{\circ}C$로 상승하였을 경우, $0.1184{\sim}0.6545min^{-1}$에서 $0.3087{\sim}0.9173min^{-1}$로 증가하여 1.4~2.6배 정도 증가하였다.