• Korea Petroleum Association Journal
• /
• no.9 s.208
• /
• pp.25-28
• /
• 1998

• Korean Journal of Food Science and Technology
• /
• v.37 no.5
• /
• pp.717-722
• /
• 2005

Formation mechanisms of light-induced volatile compounds were studied using riboflavin-photosensitized oleic acid model systems. Volatile compounds in model systems with 4000 ppm riboflavin at $35^{\circ}C$ under light or in the dark for 39 hr were isolated and identified by a combination of solid phase microextraction (SPME), gas chromatography (GC), and mass spectrometry (MS). Total volatiles in oleic acid with riboflavin under light for 13, 26, and 39 hr increased by 90, 190, and 270%, respectively, compared to those in oleic acid without riboflavin under light. Total volatiles in samples without riboflavin under light or samples with riboflavin in the dark were not significant in tested conditions (p>10.05). Riboflavin did not act as a photosensitizer when it was dispersed in oleic acid. Heptane, octane, heptanal, octanal, nonanal, and 2-nonenal were significantly increased in riboflavin-photosensitized samples compared to those in samples without riboflavin (p<0,05). Light-induced volatile compounds including heptanal and 2-nonenal from oleic acid could be explained using singlet oxygen oxidation, the formation mechanism of which were not understood using triplet oxygen oxidation. These results will help to understand volatile formation in oleic acid containing foods stored under light.

• Journal of Korean Society for Atmospheric Environment
• /
• v.12 no.1
• /
• pp.1-13
• /
• 1996

최근들어 발암성 혹은 돌연변이원성에 관련된 환경인의 영향에 관한 직접 혹은 간접적인 증거가 늘어감에 따라 대기환경에서 검출되는 화학적 발암성 물질에 많은 관심이 모아지고 있다. 수 많은 종류의 발암성 화학물질중 측히 독성 유기화합물은 주변환경에 널리 분포되어 있을 뿐만 아니라 그 종류가 매우 다양하여 적절한 관리가 어렵고 또한 일반적으로 대기중에 극미량 수준으로 존재하므로 측정, 분석이 어려워 그 위해성을 정확히 평가하기가 쉽지 않으므로 다른 물질보다 더 많은 연구와 관심의 대상이 되고 있다.(IARC, 1983; WHO, 1987; Calabrese & Kenyon, 1991; Field et al., 1992).

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 1999.06a
• /
• pp.271-276
• /
• 1999

미국을 비롯한 선진국들은 이미 휘발성 유기화합물(volatile organic compounds) 과 독성 중금속(toxic metals)을 비롯한 유해 대기오염물(hazardous air pollutants)에 대해 ATEOS (Airborne Toxic Element and Organic Species), TEAM(Total Exposure Assessment Measurement) 연구등의 대규모 연구를 통하여 인체에 미치는 영향이 가장 큰 물질군이 휘발성 유기화합물임을 밝혀낸 바 있다. (중략)

• Journal of Bio-Environment Control
• /
• v.20 no.1
• /
• pp.14-20
• /
• 2011

Objective of this research was to investigate the volatile aroma compounds and phenol contents for preservative effects. Aerial part of 5 Korean natured species of thyme located in Jeju alpine, jeju middle mountain, Kyeonggido, Ulleung island, and Gangwondo was analyzed by thermal desorption gas chromatograph mass spectrometer (TD-GC-MSD) method. Jeju middle mountain thyme was relatively high 62 species and has been investigated a high concentration of $7365.22{\mu}g/m^3$ contents according to the quantitative analysis. Total phenol contents containing thymol and carvacrol of Jeju middle mountain thyme were relatively high and showed 35.92%.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.29 no.6
• /
• pp.1042-1049
• /
• 2000

Irradiation-induced volatile flavor compounds in irradiated (1, 3, 5, 10 kGy) beef were analyzed by liquid liquid continuous extraction (LLCE) and gas chromatography/mass spectrometry (GC/MS) methods. One hundred fifty volatile compounds were detected in irradiated beef. These compounds were composed mainly of 71 hydrocarbons, 35 aromatic compounds, 15 aldehydes, 7 ketones, 4 acids, 6 esters and 12 miscellaneous compounds. Among these, only 6 volatile compounds including (E) -2-hexenal, nonene, 2-nonenal, cyclodecene, dodecene and cyclododecene were detected as irradiation-induced volatile flavor compounds, comparing with unirradiated beef meat. However, 4 volatile compounds, such as cyclodecene (r=0.88), (E)-2-hexenal (r=0.85), nonene (r=0.74) and 2-nonenal (r=0.70), having a positive correlation coefficient with the increment of irradiation dose, were considered as marker compounds for detecting irradiation dosages in irradiated beef.

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2000.11a
• /
• pp.149-150
• /
• 2000

석유화학공정은 석유화학제품의 특성상 유기용제를 많이 사용하고 있기 때문에 국내ㆍ외적으로 휘발성 유기화합물질의 배출원으로 큰 부분을 차지하고 있는 시설이다. 국내에서 석유화학시설은 울산공단, 여천공단 및 대산공단에 밀집되어 있고, '96년 10월 여천공단이 대기보전 특별대책지역으로 지정되어 휘발성유기화합물질 배출저감을 위한 종합대책이 고시되면서부터 많은 회사들이 방지시설을 설치하여 대기질이 꾸준히 향상되어 가고 있다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2001.11a
• /
• pp.367-368
• /
• 2001

휘발성 유기화합물질들(VOCs)은 그 자체가 인체에 유해한 화합물로 작용할 뿐만 아니라 환경대기 중에서 질소화합물(NOx)과 광화학 반응을 통하여 오존 등 유해한 산화물을 형성하는 전구물질로 작용하여 이들의 거동을 이해하고 분석하는 것이 대기환경에 매우 중요한 것으로 인식되고 있다. 더욱이 오존 예보 및 경계 체제의 중요한 입력 요인으로 인식되어 신뢰성 있는 배출 정보의 산출을 위해 VOCs 농도를 현장 실측하여 분석하고 예보에 이용하려는 시도가 이루어지고 있다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2002.11a
• /
• pp.413-414
• /
• 2002

도시 대기중 오존과 같은 광화학산화물에 의한 오염의 심각성이 최근 더욱 증대되고 있는 가운데 그 원인의 일부가 휘발성 유기화합물(Volatile Organic Compounds : VOCs)의 배출량 증가라는 것이 확인되었고, 더욱이 일부 VOCS의 경우에는 인체에 발암성을 나타내는 등 직접적으로 유해한 것으로 알려져 세계 각 국에서 VOCs의 감소에 많은 관심을 기울이고 있다. 특히 BTEX는 산업공정에서 많이 사용되는 물질로서 반드시 처리되어야 할 규제대상물질이다. (중략)

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.29 no.6
• /
• pp.1050-1056
• /
• 2000

To identify the irradiation-induced volatile flavor compounds, which were not detected in unirradiated sample and had positive correlation with the increment of irradiation dose, the volatile flavor compounds of irradiated (0, 1, 3, 5, 10 kGy) chicken were analyzed by liquid liquid continuous extraction (LLCE) and gas ehromatographyimass spectrometry (GC/MS) methods. One hundred twenty nine compounds were detected in irradiated chicken, and these compounds were composed mainly of hydrocarbons (62 compounds), aromatic compounds (44), aldehydes (9), ketones (5) and miscellaneous compounds (10). Among these, only 3 volatile compounds including 2-methylpentanal (r=0.24), 4-methylcyclohexene (r=0.08) and cyclotetradecene (r=0.92), were detected as irradiation-induced volatile flavor compounds in irradiated chicken. However, only cyclotetradecene was selected as a marker compound for detecting irradiation dosages with high correlation coefficient in irradiated chicken.