• 한국식품영양학회지
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• 제30권2호
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• pp.363-370
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• 2017

This study investigated the chemical composition of headspace gas from white-flowered lotus (Nelumbo nucifera Gaertner). Volatile flavor compositions of headspace from white-flowered lotus (floral leaf, stamen, flower stalk, stem) were investigated through the solid-phase microextraction method using polydimethylsiloxane-divinylbenzene fiber. The headspace was directly transferred to a gas chromatography-mass spectrometry. Sixty-three volatile flavor constituents were detected in the headspace of lotus floral leaves, and undecanoic acid (7.81%) was the most abundant component. Fifty-three volatile flavor constituents were detected in the headspace of lotus stamina, and isobutylidene phthalide (7.94%) was the most abundant component. Forty-four volatile flavor constituents were detected in the headspace of lotus flower stalks, and 3-butyl dihydrophthalide (11.23%) was the most abundant component. Fifty-nine volatile flavor constituents were detected in the headspace of lotus stems, and ligustilide (16.15%) was the most abundant component. The content of phthalides was higher in the headspace of flower stalks and stems, while alcohols and acids were the predominant compounds in lotus floral leaves.

• 한국식품영양학회지
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• 제13권1호
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• pp.45-52
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• 2000

In order to select the optimum ethanol concentration for extraction of volatile components in cinnamon, the dried cinnamon was extracted with water and 30∼90% ethanol. The volatile components of cinnamon extracts were isolated by the simultaneous distillation extraction method using Likens and Nickerson's extraction apparatus, and analyzed by GC-MS. In cinnamon bark powder 45 components were detected and 21 components were identified. The major component of cinnamon bark powder was cinnamic aldehyde. In water extract of cinnamon, volatile components were not extracted sufficiently. The volatile components of cinnamon were increased with the increment of ethanol concentraction upto 70%. The volatile component of 70% ethanol extract showed similar pattern and amount to cinnamon bark powder. But in 90% ethanol extracts, the number and amount of volatile component were reduced. The above data suggested that 70% ethanol was the most effective solvent for volatile components extraction of cinnamon.

• 한국식품영양학회지
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• 제25권4호
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• pp.930-940
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• 2012

A comparison of essential oils composition of Aster tataricus L. (gaemichwi), Ligularia fischeri (gomchwi), Solidago virga-aurea var. asiatica Nakai (miyeokchwi), and Aster scaber (chamchwi) was performed by gas chromatography and mass spectrometry for the identification of volatile flavor characteristics in chwi-namuls. The essential oils were extracted by the hydro distillation extraction method. One hundred volatile flavor components were identified from gaemichwi essential oil. ${\alpha}$-Pinene (11.5%) was the most abundant compound, followed by myrcene (8.9%) and ${\beta}$-pinene (7.5%). Ninety-one volatile flavor components were identified from the essential oil of gomchwi. Aromadendrene (14.8%) was the most abundant component, followed by ${\beta}$-caryophyllene (7.6%) and 1-methyl-4-(1-methylethylidene)-cyclohexene (7.3%). Ninety-five volatile flavor constituents were detected in the essential oil of miyeokchwi, moreover, spathulenol (15.7%) was the most abundant component. Ninety-six volatile flavor constituents were detected in the essential oil of chamchwi. Epi-bicyclosesquiphellandrene (21.9%) was the most abundant component, followed by ${\beta}$-caryophyllene (9.5%) and ${\delta}$-terpinene (8.9%). The essential oil composition of gaemichwi was characterized by a higher contents of pinenes. The essential oil composition of gomchwi can be easily distinguished by the percentage of aromadendrene. Spathulenol and epi-bicyclosesquiphellandrene were regarded as the characteristic odorants of miyeokchwi and chamchwi, respectively.

• 한국축산식품학회지
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• 제36권6호
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• pp.719-728
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• 2016

The aim of this study was to explore the volatile compounds of hind leg, foreleg, abdomen and Longissimus dorsi in both male and female Hyla rabbit meat by solid phase microextraction tandem with gas chromatography mass spectrometry, and to seek out the key odorants via calculating the odor activity value and principal component analysis. Cluster analysis is used to study the flavor pattern differences in four edible parts. Sixty three volatile compounds were detected, including 23 aldehydes, 4 alcohols, 5 ketones, 11 esters, 5 aromatics, 8 acids and 7 hydrocarbons. Among them, 6 aldehydes and 3 acids were identified as the potential key odorants according to the ratio of concentration and threshold. The contents of volatile compounds in male Hyla rabbit meat were significantly higher than those in female one (p<0.05). The results of principal component analysis showed that the first two principal component cumulative variance contributions reach 87.69%; Hexanal, octanal, 2-nonenal, 2-decenal and decanal were regard as the key odorants of Hyla rabbit meat by combining odor activity value and principal component analysis. Therefore volatile compounds of rabbit meat can be effectively characterized. Cluster analysis indicated that volatile chemical compounds of Longissimus dorsi were significantly different from other three parts, which provide reliable information for rabbit processing industry and for possible future sale.

• Preventive Nutrition and Food Science
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• 제4권2호
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• pp.97-102
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• 1999

Antimicrobial activity and chemical composition of volatile flavor extracts from Agastache rugosa were investigated. The volatile flavor extracts were obtained from leaves and stems of Agastache rugosa by simultaneous distillation extraction (SDE) method. Antimicrobial activity was investigated by disc diffusion and broth dilution methods against several microorganisms of Bacillus cereus, bacillus megaterium, Bacillus subtilis, Corynebacterium xerosis, Staphylo coccus aureus, Staphylococcus epidermidis, Agrobacterium rhizogenes , Agrobacterium tumefaciences, Enterobacter cloacae, Escherichia coli, Salmonella typhi, Vibrio parahaemolyticus, Candida utilis and Saccharomyces cerevisiae. Volatile flavor extractsfrom leaves have strong antimicrobial activity against C.utilis and S.cerevisiae. When 0.12% volatile flavor extracts from fresh leaves were included in the medium, lag phase of C. utilis was extended 6 hr and that of S.utilis and S.cerevisiae was extended 2hr. Further analyses were performed to elucidatethe effective component of the extracts. The major component of volatile flavor was estragole, a phenolic compound. Minor components were determined to be terpenes , alcohols, acids , esters, ketones and aldethydes.

• 한국식품영양과학회지
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• 제16권4호
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• pp.333-336
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• 1987

한국산 양송이버섯의 생것과 가열한 것의 향기성분을 GC, GC-MS를 이용하여 분석한 결과는 다음과 같다. 1) 생양송이에서는 향기성분 13종을 동정하였으며 이들중 1-octen-3-ol이 73.13%로 가장 많았고 2-octenol 7.44%, 3-octanone 3.09%, 3-octanol 1.42%로 전체의 85.08%를 차지하였다. 2) 가열중인 것에서도 13종을 동정할 수 있었으며 역시 1-octen-3-ol이 68.86%로 가장 많았으며 2-octenol이 8.42%, 3-octanone 3.75%, Benzyl alcohol 3.23%, 3-octanol 1.97%로 전체의 86.23%를 함유하였다.

• Food Science and Biotechnology
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• 제18권5호
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• pp.1288-1292
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• 2009

Volatile flavor compounds were isolated from the flowers of Chrysanthemum indicum L. (gamguk) produced in Korea and China by the hydro distillation, and were analyzed by gas chromatography-mass spectrometry (GC/MS). The yield of oils from Korean and Chinese gamguk were 2.0 and 0.5%(v/w), respectively. Sixty-three volatile compounds of Korean gamguk representing 89.28% of the total peak area were tentatively identified, including 35 hydrocarbons, 12 alcohols, 6 ketones, 3 esters, 5 aldehydes, 1 oxide, and 1 miscellaneous component. Thirty-six volatile components of Chinese gamguk constituted 58.15% of the total volatile composition were tentatively characterized, consisting of 19 hydrocarbons, 7 alcohols, 2 ketones, 2 esters, 4 aldehydes, 1 oxide, and 1 miscellaneous component. The predominant components of Korean oil were ${\alpha}$-pinene, 1,8-cineol, and chrysanthenone. Whereas, camphor, ${\alpha}$-curcumene, and ${\beta}$-sesquiphellandrene were the main aroma compounds of Chinese gamguk.

• 한국식품영양과학회지
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• 제28권2호
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• pp.299-304
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• 1999

To compare the composition of volatile flavor components of two different types of rice, the volatile flavor concentrates isolated from brown rices Hyangnambyeo(aromatic cultivar) and Dongjinbyeo (normal cultivar) were analyzed by gas chromatography and gas chromatography mass spectrometry. A total of components, including 16 hydrocarbons, 16 aldehydes and ketones, 15 alcohols, 4 acids, and 10 miscellaneous components were identified positively or tentat ively. Among them, n pentanol was the most abundant component in both samples and Hyangnambyeo contained more aldehydes and alcohols than Dongjinbyeo. 2 Acetyl 1 pyrroline which is chiefly responsible for the character istic odor of aromatic type rice was high in Hyangnambyeo compare to Dongjinbyeo, but these were detected as minor component.

• 보존과학회지
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• 제10권1호
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• pp.21-30
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• 2001

정향, 유향, 곽향, 청목향, 그리고 침향의 에탄올 및 휘발성 추출물의 항균력 및 살충력 실험결과, 정향의 에탄올 및 휘발성 추출물은 실험균주 4종(Mucor hiemalis, Aspergillus niger, Penicillium funiculosum, Trichoderma viride)에 대해서 강한 항균력을 나타냈으며, 유향의 휘발성 추출물은 실험균주 M. hiemalis, A. niger, P. funiculosum에서 강한 항균력을 보였다. 공시충 흰개미에 대해서 정향 에탄올 추출물이 접종 후 48 시간 뒤에 $100\%$ 살충력을 보였고, 청목향 에탄올 추출물은 72 시간 뒤에 개체를 $32\%$ 감소시키는 것을 확인하였다. 휘발성 추출물에 대한 살충력 실험은 흰개미에 대해서 정향 추출물이 48시간 내에 $100\%$의 사충력을 보였다. 넓적나무좀에 대한 살충력은 정향이 접종 후 7일 내에 $19\%$의 사충력을 보였다. 정향의 휘발성 추출물에서 9 개의 휘발성 성분을 확인하였으며, 정향의 휘발성 향기성분 중 가장 큰 농도$(92\%)$를 차지하고 있는 eugenol은 항균활성 물질로써 확인되었다.

• 한국식생활문화학회지
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• 제22권4호
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• pp.462-467
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• 2007

어육장과 시중 판매되는 소스의 휘발성 향기 성분들을 GC-SAW 전자코를 이용하여 분석하였다. 어육장은 담그고 1년 동안 발효${\cdot}$숙성 하면서 2개월 간격으로 액체부분만 취해서 분석하였고 숙성 1년이 지난 후에는 가열을 하였다. 소스는 주 원료가 다른 6종을 구입하여 시료로 이용하였다. 발효${\cdot}$숙성이 진행됨에 따라 어육장의 휘발성 향기 성분은 감소하였으며 숙성 후 가열 처리 한 결과 초기 머무름 시간에서 새로운 peak가 여러 개 생성 또는 증가함을 보였다. 쇠고기 추출물, 가쓰오부시, 멸치액젓이 주원료인 소스는 전자코 분석 결과 주 원료에 따라 peak의 분포와 면적의 크기가 서로 다른 패턴을 보였으며, 이는 어육장의 최종 시료와도 달랐다. 어육장과 소스의 향기 성분을 머무름 시간에 따라 주성분 분석을 하여 원료에 따른 향기 패턴에 차이가 있음을 나타내었으며 어육장은 제조 시 사용된 재료로 인하여 쇠고기와 멸치액젓이 주 원료인 소스 사이에 제 1주성분값이 나타났다. 이는 식품의 복잡하고 미묘한 향만을 객관적으로 관찰 한 것으로 향후 맛의 차이에 대한 연구도 병행되어야 할 듯 하다.