• The Korean Journal of Ecology
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• v.24 no.3
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• pp.137-140
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• 2001

The antifungal activity of chemical substances from Artemisia annua were examined. Antifungal activity of aqueous extracts from A. annua was higher than that of essential oils in Fusarium oxysporum, whereas that of essential oil was higher than that of aqueous extracts in Aspergillus nidulans. The GC/MS methods were employed for the analysis and identification of phytotoxic substances from A. annua. Essential oil of some components were identified including thujone, terpineol, β-pinene, cienole, 2,4-hexndienal, camphor, citronellal, (-)-menthone, (1R)-(-)myrtenol, (S)-(-)-perilla aldehyde, perilla alcohol, 4-tert-buthylaniline, eugenol, isosafrole, isoeugenol and α-humulene. These results suggest that the chemical substances from A. annua such as terphenoids seem to be responsible for the allelopathic effect.

• Research in Plant Disease
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• v.28 no.1
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• pp.1-18
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• 2022

Volatiles exist ubiquitously in nature. Volatile compounds produced by plants and microorganisms confer inter-kingdom and intra-kingdom communications. Autoinducer signaling molecules from contact-based chemical communication, such as bacterial quorum sensing, are relayed through short distances. By contrast, biogenic volatiles derived from plant-microbe interactions generate long-distance (>20 cm) alarm signals for sensing harmful microorganisms. In this review, we discuss prior work on volatile compound-mediated diagnosis of plant diseases, and the use of volatile packaging and dispensing approaches for the biological control of fungi, bacteria, and viruses. In this regard, recent developments on technologies to analyze and detect microbial volatile compounds are introduced. Furthermore, we survey the chemical encapsulation, slow-release, and bio-nano techniques for volatile formulation and delivery that are expected to overcome limitations in the application of biogenic volatiles to modern agriculture. Collectively, technological advances in volatile compound detection, packaging, and delivery provide great potential for the implementation of ecologically-sound plant disease management strategies. We hope that this review will help farmers and young scientists understand the nature of microbial volatile compounds, and shift paradigms on disease diagnosis and management to aromatic (volatile-based) agriculture.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2000.05a
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• pp.239-240
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• 2000

열건조식 음식물쓰레기 처리기에서 발생하는 VOC의 분해효율을 향상시키기 위하여 생물여과기를 이용하여 실험하였다. 현장 생물여과기에서 배출되는 휘발성 물질은 총 50여 가지 물질이 검출되었다. 주요 악취 유발물질은 isoprene, dimethyl sulfide (DMS), dimethyl disulfide (DMDS), limonene 등으로 파악되었다. 칼럼 반응기를 이용한 휘발성 물질 분해는 20일 정도의 적응기 후 제거되었으며, 제거 효율은 90% 이상으로 나타났다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.207-208
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• 2002

휘발성 유기화학물질 (VOCs)이 인체의 건강에 미치는 영향은 아직까지도 명확하게 밝혀지진 않았지만 대부분의 물질이 재실자에게 자극과 불쾌감을 유발하며, 여러 종류의 발암성 물질을 포함하고 있는 것으로 알려지고 있다 휘발성 유기화학물질 중에서 80% 정도가 인체의 호흡기관을 자극하고 눈의 통증이나 자극을 유발하며, 이중에서 25% 정도는 발암성 물질로 파악되고 있다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.255-257
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• 1999

휘발성 유기화합물(VOCs)은 오존 및 광화학 스모그의 전구물질 내지는 원인물질로써, NOx나 햇빛 등과 반응하여 2차 오염물들을 생성한다. 특히, Benzene이나 Chloroform과 같은 VOCs 물질들을 강력한 발암성 물질로 규제되고 있다. 이러한 VOCs는 차량운행, 인쇄, 도장산업, 각종 석유정제과정 및 취급과 정등에서 많이 발생하며, 우리 시민들에게 호흡기 질환을 일으키거나 시계를 흐리게 한다. 따라서 휘발성 유기화합물에 의한 악영향과 교통 및 각종 산업시설에서의 발생원 확인 및 제거에 대한 관심이 매우 높다.(중략)

• Journal of Environmental Science International
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• v.6 no.6
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• pp.659-670
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• 1997

Vehicle occupant exposure to volatile organic compounds (VOCs) has been a subject of concern In recent years because of higher levels of VOCs Inside vehicles as compared to the surrounding ambient atmosphere and because of the toxicity of VOCs. The effectiveness of two commercial ACDs for the removal of selected VOCs in the interior of automobiles was evaluated on 115 commutes throegh urban (Taegu) commutes by two cars and 9 idles. The idling and commuting studios conducted under four different driving conditions showed that the ho commercial ACDs were not effective for the removal of VOCs in the interior of vehicles. The concentrations of all target VOCs except benzene were significantly higher (p<0.05) in the interior of older car than of newer cu. The mean levels of benzene and toluene measured in thins study were well excess of earlier other studios In the United States, besides Los Angeles with which was comparable. It was reported that the in-vehicle exposure to benzene and corresponding upper-bound cancel risk were about 8 times higher than those for outdoor environment, while they were about half of those from Indoor environment.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2000.11a
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• pp.211-214
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• 2000

휘발성 유기물질은 ground level ozone의 전구체로써 미래 대기오염의 주원인이 될것으로 판단되는 물질이며 구미각국에서는 1990년 초반부터 그리고 국내에서는 최근에 와서 규제가 확정된 물질이다. 대표적인 휘발성 유기물질의 종류와 배출원을 Table 1과 Table 2에 나타내었다.(중략)

• Korean journal of applied entomology
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• v.33 no.1
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• pp.19-25
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• 1994

Electrophysiological recordings of antennal responses to common plant volatile chemicals in the rice brown planthopper, Niloparuota lugens (Homoptera: Delphasidae}, were examined. Volatile plant chemicals were generally credited with a major role In host plant location for food or egg laying by many insects feeding on plants as adults and/or as larvae. An mitial examination of extracellular responses has been conducted. Acton potentials recorded from the plaque organs were initially positive-going, biphaslc spikes and the background firing rate of the cells recorded ranged from 1 ~22 impulses/sec. A wide range of responses to changes in concentration of the test chemical was observed. The commonest response was a relatively small increase in exitation with increasing concentration beween 1 J.lg and 100).\g on the filter paper in syringe. Adtivity either peaked at 100 $\mug$ and remained virtually saturated at 1000 f19 or tended to decrease at the highest concentration.

• Korean Journal of Plant Resources
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• v.19 no.1
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• pp.169-173
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• 2006

The effects of aqueous extract and volatile substances of 2 Angelica plants on seed germination and seedling growth were investigated. The seed germination of Angelica gigas showed increase in proportion to increase in aqueous extract concentration of A. gigas, while that of Angelica acutiloba was reduced proportionally to the extract concentration. The seed germination of A. gigas and A. acutiloba treated with aqueous extract of A. acutiloba was inhibited. The seedling elongation of A. gigas and A. acutiloba was slightly increased at lower concentration of aqueous extract of A. gigas, whereas it was proportionally decreased at higher concentrations. The seedling elongation of 2 Angelica plants was decreased by the aqueous extract of A. acutiloba. The aqueous extract of A. acutiloba caused significant inhibition in seedling growth of 2 Angelica plants. The seed germination of Lactuca sativa was not affected by volatile substances emitted from 2 Angelica plants. The radicle elongation of L. sativa treated with volatile substances of 2 Angelica plants was inhibited slightly and it was not suppressed according to the concentration of volatile substances.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.391-392
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• 2001

휘발성 유기화합물(Volatile Organic Compound : 이하 VOCs 라 칭함)은 탄화수소화합물의 총칭으로 오존 등 광화학적 스모그의 원인이 되는 물질일 뿐만 아니라 발암성 등의 유해 물질, 지구온난화와 성층권의 오존층 파괴의 원인 물질, 대기 중 악취물질로서[1] 환경 및 인간의 건강에 영향을 초래하여 VOCs 감축을 주요 대기오염정책으로 세우는 국가가 증가하는 추세이다. (중략)