• 한국식품과학회지
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• 제48권2호
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• pp.122-127
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• 2016

아사이베리의 특징적인 향기성분을 동정하기 위하여 SAFE와 LLCE를 이용하여 추출하고 GC-MS와 GC-O로 분석하였다. 아사이베리에서 공통적으로 동정된 휘발성 향기성분은 2-phenylethanol, (Z)-3-hexenol과 benzyl alcohol 등으로 함량이 높았으며 8-hydroxy linalool과 maltol은 LLCE에서 높은 함량을 나타내었다. 아사이베리의 휘발성 향기성분은 알코올류가 가장 함량이 높았으며 아사이베리의 중요한 휘발성 향기성분이라고 생각된다. 아사이베리의 향 활성 화합물 중 ${\beta}-damascenone$은 SAFE에서 $log_2FD=4$와 LLCE에서 $log_2FD=1$을 나타냈으며 장미향과 베리향 특성을 나타내어 아사이베리의 특징적인 향에 기여하는 중요한 화합물이라 생각된다. 또한 trans-linalool oxide, (Z)-3-hexenol과 2-phenylethanol 등이 아사이베리의 향 활성 화합물로 동정되었다.

• 한국축산식품학회지
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• 제34권5호
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• pp.638-646
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• 2014

The effects of two levels (1.4 vs 2.8%) of fresh garlic on lipid oxidation and microbial growth in pork patties were evaluated. Hunter color (L, a, b), pH, thiobarbituric acid reactive substances (TBARS), oxidative volatile compounds, total bacteria and Enterobacteriaceae in the pork patties with or without fresh garlic were measured during storage at $4^{\circ}C$. Addition of fresh garlic decreased redness (a), while increased pH and yellowness (b) values of the fresh pork patties were observed, regardless of the levels added. The TBARS values of the pork patties were increased with the addition of fresh garlic (p<0.05). Similar results were observed in oxidative volatile compounds. A total of 13 volatile compounds were detected in the patties (5 sulfur-containing compounds, including allyl mercaptan, allyl methyl sulfide, diallyl sulfide, methyl-(E)-propenyl-disulfide, and diallyl disulfide, and the 8 other oxidative compounds, including 1-pentanol, hexanal, 1-hexanol, heptanal, (E)-2-heptenal, 1-octen-3-ol, (E)-2-octenal and nonanal). Fresh garlic accelerated development of oxidative products in the pork patties, especially hexanal and the total oxidative volatile compounds. However, the addition of 1.4 and 2.8% of fresh garlic inhibited the growth of total bacteria and Enterobacteriaceae, indicating low total bacterial counts and Enterobacteriaceae than the controls.

• 한국식품영양학회지
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• 제30권4호
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• pp.788-795
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• 2017

This research has attempted to investigate the volatile flavor compounds of onion products through acetic fermentation, and to create a natural beverage with beneficial biological properties which can also fulfill customer quality standards. Onion products (OAF (M): Onion extracts at five days of acetic fermentation, OAF (F): Onion extracts at ten days of acetic fermentation) were produced by acetic fermentation. Volatile flavor compounds from onion extracts, OAF (M) and OAF (F) were used by Mixxor liquid extractions and analyzed by GC/MSD. Compounds of 49, 75 and 69 were identified in onion extracts, OAF(M) and OAF(F) respectively. Among the major volatile flavor compounds classes, sulfur containing compounds (36.7%), acids (31.2%) and aldehydes (13.5%) in onion extracts were changed into acids (69.6%) and alcohols (24.6%) in OAF (M) and acids (80.6%) and alcohols (15.5%) in OAF (F). During acetic fermentation acetic acid, 1,3-butanediol (odorless) and 2,3-butanediol (onion flavor) increased remarkably, sulfur-containing compound such as 2,5-dimethylthiophene having anti-oxidant activities was detected by fermentation.

• 한국약용작물학회지
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• 제22권3호
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• pp.188-195
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• 2014

This study was carried to investigate the effect of illite addition on the growth, bioactive components and volatile compounds of leaf on Saururus chinensis Baill cultivation in greenhouse. Illite addition on Saururus chinensis Baill cultivation resulted no significant effects on the aerial part. However, the root part was highest in 5% illite addition group. Crude oil and ash amount increased as illite additives was increased. Ca of inorganics and free sugars contents were highest in 5% and 20% illite addition, respectively. Hyperoside and isoquercetin of available component on leaf were highest in 5% illite addition group, 4.02mg/g and 4.31mg/g, respectively. The volatile compounds in Saururus chinensis Baill leaf cultured with illite addition amounts were isolated by solid-phase microextraction fiber (polydimethysiloxane $65{\mu}m$) and identifed by gas chromatogtaphy mass spectrometry. As the results, the 22 volatile compounds were identified from in Saururus chinensis Baill leaf and major volatile compounds were the ${\alpha}$-cadinol (18.50%), myristicin (16.46%), methyl-9-methyl-tetradecanoate (10.22%), and ${\gamma}$-muurolene (9.75%). Especially, the content of ${\alpha}$-cadinol was highest in 5% illite addition group and ${\gamma}$-muurolene on overall illite addition group was lower than no addition group.

• Journal of Applied Biological Chemistry
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• 제55권3호
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• pp.141-148
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• 2012

최근 주류 섭취 시 숙취와 관련이 있는 성분인 아세트알데히드, 메탄올 및 퓨젤유를 포함한 휘발성 유해성분에 대한 관심이 증가하고 있다. 또한, 이들 성분들은 과음 시 간질환 및 암을 유발할 수도 있는 것으로 알려져 있다. 아세트알데히드는 주류에서 발견되는 휘발성 성분이며 많은 식품에서 향미소재로 사용되고 있으나, 인체에 발암가능 물질로 분류되기도 한다. 특히, 알코올과 같이 섭취 시에는 1급 발암물질로 분류되고 있다. 메탄올은 알코올 발효 중 펙틴 분해 효소에 의해 팩틴의 demethoxylation 기작으로 생성된다. 이에 비해 퓨젤유는 알코올 발효의 부산물로 생성되며, 주류의 주요한 향미성분으로 알려져 있다. 본 연구에서는 주류에 포함되어 있는 휘발성 유해성분들이 건강에 미치는 영향, 이들의 최대허용함량 및 다양한 주류에서의 실제 함량, 그리고, 이들의 분석방법에 대해 고찰하였다.

• 한국산업보건학회지
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• 제16권4호
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• pp.413-427
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• 2006

It is necessary to study and develop guidelines for providing comfort and health indoor air quality for office workers since air-tight envelope system of current office building may cause poor indoor air quality. The purpose of this study is to propose guideline for volatile organic compounds in office base on the field study, human health risk assessment and cost-benefit analysis. The field study was conducted to survey the concentrations of volatile organic compounds in indoor air of 69 offices from June to September, 2005 in Seoul and Gyeonggi-do. The rate of excess to guideline of volatile organic compounds in indoor air of new apartment on the Ministry of Environment in Korea(MOE) was surveyed 37.6% for benzene, 6.8% for toluene, and 1.5% for ethylbenzene. As the result of human health risk assessment, mean cancer risk did not exceed 10-6 which is guideline of US.EPA. Also, total hazard index did not exceed 1 which is guideline of US.EPA. Through the cost-benefit analysis of angle on the social-economics to verify the necessary to establish the standards of volatile organic compounds for improvement and development of indoor air quality in office, the present value of benefit was higher than the present value of cost. With the above considerations in mind, it is suggested that the field study for indoor air quality in offices should be expanded and human health risk assessment and cost-benefit analysis be performed th offer scientific data for decision-making of policy for improvement and management of indoor air quality in office.

• 한국환경보건학회:학술대회논문집
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• 한국환경보건학회 2005년도 국제학술대회
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• pp.319-322
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• 2005

Porous building materials are not only sources of indoor air pollutants such as volatile organic compounds (VOCs) but they are also strong sinks of these pollutants. Volatile organic compounds have been implicated in impaired spermatogenesis, increase in the incidence of malformed sperm and decrease in the percentage of moving sperm. The aim of this study was to determine and compare the direct effects of various volatile organic compounds (phenol, formaldehyde; HCHO, ethanol, toluene, styrene) on motility and survival rate of human sperm in vitro. Semen samples from 3 health subjects were prepared using swim-up method and 1-10mM volatile organic compounds were added to the test medium. HCHO and phenol produced significant decreases in the motility and survival rate with a different potency. The most potent inhibition of motility and survival rate was observed after exposure to HCHO. Less than 1mM HCHO significantly inhibited sperm motility. When ethanol is added directly to sperm, at concentrations equivalent to that in serum after heavy drinking, these damaging effects were lowest compared with other volatile organic compounds. Present study shows that each compound has differential toxic potency to human sperm and we need special caution for the use of HCHO and phenol.

• Journal of the Korean Wood Science and Technology
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• 제44권3호
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• pp.430-439
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• 2016

한약재 찌꺼기로 제조한 한방보드로부터 방출되는 향기성분을 Tenax 튜브에 흡착시킨 후 TD GC/MS에 의해 동정하고, 온도에 따른 방출특성을 검토하였다. 한방보드로부터 방출되는 휘발성 물질로는 88종이 동정되었다. 온도별로는 $25^{\circ}C$에서 44종, $35^{\circ}C$에서는 55종, $45^{\circ}C$에서는 65종이 검출되었으며, 온도가 상승함에 따라 화합물의 수와 전체피크 면적 모두 증가하였으며, 측정한 모든 온도조건에서 검출된 향기성분은 34종이었다. $25^{\circ}C$에서 검출된 향기성분의 93%, $35^{\circ}C$에서는 92%, $45^{\circ}C$에서는 90%가 Hydrocarbon류의 화합물이었으며, 그 외 Ether류가 약 4%, Ketone, Aldehyde, Acid류의 물질이 소량 검출되었다. Hydrocarbons에는 17종, 11%가 monoterpenes이며, 80%, 39종이 sesquiterpenes이었다. monoterpenes에는 limonene이 가장 많이 검출되었으며, sesquiterpene류의 주요 향기 물질로는 ${\alpha}-curcumene$, zingiberene, ${\beta}-elemene$, ${\beta}-selinene$, ${\alpha}-amorphene$, ${\alpha}-copaene$이었다. 특히 ether화합물인 anethole (3.26%)이 모든 온도에서 비교적 많이 검출되었다. 이상의 결과에서 한약재 찌꺼기로 제조한 한방보드에는 다양한 종류의 향기성분이 다량 포함되어 있으며, 향기성분을 활용한 다양한 제품의 제조에 활용할 수 있을 것으로 생각된다.

• 한국축산식품학회지
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• 제34권5호
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• pp.700-708
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• 2014

The volatile composition of veal has yet to be reported and is one of the important factors determining meat character and quality. To identify the most important aroma compounds in veal from Holstein bull calves fed one of three diets, samples were subjected to solid-phase microextraction (SPME) combined with gas chromatography-quadrupole mass spectrometry (GC-MS). Most of the important odorants were aldehydes and alcohols. For group A (veal calves fed entirely on milk for 90 d before slaughter), the most abundant compound class was the aldehydes (52.231%), while that was alcohols (26.260%) in group C (veal calves fed starter diet for at least 60 d before slaughter). In both classes the absolute percentages of the volatile compounds in veal were different indicating that the veal diet significantly (p<0.05) affected headspace volatile composition in veal as determined by principal component analysis (PCA). Twenty three volatile compounds showed significance by using a partial least-squared discriminate analysis (PLS-DA) (VIP>1). The establishment of the global volatile signature of veal may be a useful tool to define the beef diet that improves the organoleptic characteristics of the meat and consequently impacts both its taste and economic value.

• 한국환경보건학회지
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• 제33권2호
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• pp.98-103
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• 2007

This study was performed to measure the changed concentrations of formaldehyde and volatile organic compounds after moving in the newly constructed apartment buildings at Seoul. From December 2004 to October 2005, we measured the concentration of formaldehyde and volatile organic compounds in newly constructed apartment buildings before and after residence. In conclusion, it showed that there was a significant relationship association between the con centration of the volatile organic compound and the formaldehyde and remodeling of the house, built in-furniture, and ventilation of the house. Therefore, it was suggested that we need preventive measures and management plans about various factors such. as remodeling, and built in-furniture, ventilation to decrease the concentrations of volatile organic compounds and formaldehyde.