• 한국응용곤충학회지
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• 제45권1호
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• pp.45-49
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• 2006

꽃노랑총채벌레 성충에 대한 4종 식물정유(muguet flower, patchouli, pennyroyal, spearmint)의 훈증효과를 조사하였다. 그들 중 100%의 훈증효과를 나타낸 정유는 pennyroyal oil과 spearmint oil 이었다. 두 정유에 대한 주요 구성성분을 GC와 GC/MS로 분석한 결과, pennyroyal oil은 pulegone(100.0%), spearmint oil은 ${\beta}-myrcene(3.5%)$, limonene(12.1%), carvone(85.4%)이 주요 구성성분으로 나타났다. 이 성분의 훈증독성 시험결과 carvone과 pulegone은 $1{\mu}{\ell}/45m{\ell}$ air의 약량에서 100%의 높은 훈증독성을 나타내었다.

• Natural Product Sciences
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• 제8권1호
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• pp.18-22
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• 2002

Inhibitory effects of the essential oils obtained from ten herbs were tested on acetaminophen-induced lipid peroxidation in the rat. The oil of Artemisia princeps var. orientalis buds (AP-oil) showed the most significant hepatic malondialdehyde value which was comparable to those of ascorbic acid and methionine. This was warranted by the protective effect on hepatic glutathione depletion. Overview of the data on the activities of hepatic microsomal enzymes, aminopyrine N-demethylase and aniline hydroxylase led to the notice that the suppressed activities of those enzymes are mainly responsible for the anti-lipid peroxidation. The interpretation of GC-MS data on the AP-oil revealed the ingredient of cineol, thujone, carvone, borneol, camphor and terpineol.

• 식물병연구
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• 제12권1호
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• pp.51-54
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• 2006

4종류의 식물 추출 오일(마늘, 생강, 계피, 레몬그라스)에 대한 실내 항균효과를 5종의 식물병원세균과 4종의 식물병원진균에 대해 조사하였다. 4종의 오일중 마늘오일과 계피오일의 항균효과가 우수하였다. 특히, 마늘오일은 식물병원세균인 Agrobacterium tumefaciens, Erwinia carotovora, Ralstonia solanacearum, Xanthomonas campestris와 식물병원진균인 Phytophthora infestans, Fusarium oxysporum, Collectotricum sp.에 대해 강한 항균력을 나타내었다. 그러나, Acidovorax avenae와 Pythium sp.에 대해서는 항균효과가 없었다. 마늘오일의 오이 흰가루병(Sphaerotheca fusca)과 토마토 흰가루병(Erysiphe cichoracearum)에 대한 포장 방제효과 실험결과 각각 70.0-74.6%와 71.2%의 방제가를 나타내었다.

• 한국약용작물학회지
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• 제27권6호
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• pp.427-435
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• 2019

Background: A growing interest in health has increased the need for the development of potent antioxidant materials known to play a role in various physiological activities. Currently research and development of non-toxic natural antioxidants with high activity is ongoing. Methods and Results: In this study, we measured 2,2'-azinobis- (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability of 10 plant essential oils, selecting samples of Dendranthema indicum, Dendranthema zawadskii, and Citrus sunki essential oils. The samples were analyzed using liquid chromatography (LC) and the radical scavenging activity on LC-based systems with the same conditions. In the LC-mass spectroscopy (MS)/MS analysis of the active compound peak, 2-methoxy-4-vinylphenol with a molecular weight of 150.1 g/mol was identified in C. sunki essential oils. Eugenol or isoeugenol with a molecular weight of 164.1 g/mol as identified in D. indicum and D. zawadskii essential oils as radical scavenging active compounds. Conclusions: In the LC-based measurement system, the active ingredient can be identified by simultaneously conducting profile analysis and the radical scavenging activity of essential oil samples. In addition, LC-MS/MS analysis of the active compound peaks can be performed under the same separation conditions to obtain data that can identify the active compounds in the sample.

• 한국가스학회지
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• 제18권5호
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• pp.33-39
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• 2014

열매체유는 화학플랜트의 가열시스템, 열교환시스템, 특정한 가스공정, 사출성형 시스템 및 펄프 제지공정에 사용되고 있다. 열매체유는 열적 산화 분해에 잘 견디며 안전성이 뛰어나며, 열매체유가 누출이나 분출의 경우에는 점화원이 있을때 쉽게 점화된다. 본 연구에서는 공정안전관리 사업장의 화재 폭발 사고를 예방하기 위해서 열매체유의 사용 실태조사를 통해 안전관리 상태를 고찰하였다. 사업장의 공정시스템에서 사용된 열매체유의 사용실태는 개발된 설문지에 의해서 조사되었다. 본 연구 결과는 열매체유의 관리나, 열매체유 공정의 안전한 운전과 유지와 관련된 화재 폭발 사고 예방을 위한 안전관리 대책 수립에 활용될 수 있을 것이다.

• 농약과학회지
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• 제15권3호
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• pp.231-237
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• 2011

본 연구는 후추출물, 클로브버드, 로즈마리 및 오리가늄오일의 친환경 살충소재의 활용가능성을 탐색하고자 급성경구독성, 급성경피독성, 피부자극성 및 안점막자극성시험을 수행하였다. 랫드를 이용한 급성경구독성시험결과 후추추출물, 클로브버드, 로즈마리 및 오리가늄오일의 $LD_{50}$은 2,000 mg/kg bw이상이었고, 급성경피독성시험결과 모든 사험물질의 $LD_{50}$이 4,000 mg/kg bw으로 나타났다. 피부자극성시험결과 후추추출물, 클로브버드 및 로즈마리오일은 자극성이 없었고, 오리가늄오일은 중도의 자극성을 나타냈다. 안점막자극성시험결과 후추추출물과 로즈마리오일은 자극성이 없고, 클로브버드오일은 경도의 자극성을 나타냈으며, 오리가늄오일은 중도의 자극성을 나타냈다. 따라서, 후추와 로즈마리오열은 독성이 낮았으나, 클로브버드오일은 경도의 안점막자극성을 갖고, 오리가늄오일은 중도의 피부자극성과 안점막자극성이 있는 것으로 구분되었다.

• Mycobiology
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• 제37권1호
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• pp.48-52
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• 2009

Essential oils are mixtures of volatile, lipophilic compounds originating from plants. Some essential oils have useful biological activities including antimicrobial, spasmolytic, antiplasmodial, and insect-repelling activities. In this study, we tested the antimicrobial activity of essential oil prepared from the aromatic plant, Cymbopogon citrates, against three important plant pathogenic and medical microorganisms, Pectobacterium carotovorum, Colletotrichum gloeosporioides, and Aspergillus niger. It effectively inhibited the growth of the bacterium, Pectobacterium carotovorum, in a dose-dependent fashion, and 0.5% of the oil inhibited the growth of bacteria completely. Similarly, the essential oil inhibited the growth of plant pathogenic fungus, Colletotrichum gloeosporioides, and the addition of 1% of essential oil completely inhibited the growth of fungus even after 5 days of culture. Finally, it effectively inhibited the growth of the medically and industrially important fungal species, Aspergillus spp. These results suggest that the essential oil from Cymbopogon citrates may be an environmentally safe alternative to inhibit antimicrobial agents for various uses.

• The Plant Pathology Journal
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• 제32권4호
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• pp.363-370
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• 2016

Pseudomonas syringae pv. actinidiae (Psa) causes bacterial canker disease in kiwifruit. Antibacterial activity of plant essential oils (PEOs) originating from 49 plant species were tested against Psa by a vapor diffusion and a liquid culture assays. The five PEOs from Pimenta racemosa, P. dioica, Melaleuca linariifolia, M. cajuputii, and Cinnamomum cassia efficiently inhibited Psa growth by either assays. Among their major components, estragole, eugenol, and methyl eugenol showed significant antibacterial activity by only the liquid culture assay, while cinnamaldehyde exhibited antibacterial activity by both assays. The minimum inhibitory concentrations (MICs) of estragole and cinnamaldehyde by the liquid culture assay were 1,250 and 2,500 ppm, respectively. The MIC of cinnamaldehyde by the vapor diffusion assay was 5,000 ppm. Based on the formation of clear zones or the decrease of optical density caused by these compounds, they might kill the bacterial cells and this feature might be useful for managing the bacterial canker disease in kiwifruit.

• 농약과학회지
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• 제14권4호
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• pp.339-346
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• 2010

본 연구는 생리활성이 높은 식물오일의(라벤더, 레몬유칼립투스 및 계피 오일) 친환경 살충소재의 활용가능성을 탐색하고자 급성독성(급성경구독성, 급성경피독성, 피부자극성 및 안점막자극성)시험을 수행하였다. 랫드를 이용한 급성경구독성시험결과 라벤더, 레몬 유칼립투스 및 계피 오일의 $LD_{50}$은 2,000 mg/kg bw 이상이었고, 급성경피독성시험결과 모든 시험물질의 $LD_{50}$이 4,000 mg/kg bw으로 나타났다. 피부자극성시험결과 라벤더와 레몬 유칼립투스 오일은 자극성이 없었고, 계피 오일은 중도의 자극성을 나타냈다. 안점막자극성시험결과 라벤더, 레몬 유칼립투스 오일은 자극성이 없었고, 계피오일은 중도의 자극성을 나타냈으나 세척시험 결과 자극성은 없었다. 따라서, 라벤더 및 레몬 유칼립투스 오일은 독성이 낮았으나, 계피 오일은 중도의 피부자극성 및 안점막자극성을 갖는 것으로 평가되었다.

• 한국식품영양학회지
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• 제33권2호
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• pp.215-221
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• 2020

The purpose of this study was to investigate the protective effect on oxidative stress induced PC12 cells, and volatile flavor composition of essential oils derived from medicinal plant seeds- Gossypium hirsutum L. (G. hirsutum), Coix lachryma-jobi (C. lachryma-jobi) and Oenothera biennis (O. biennis). The essential oils were obtained by the solvent (hexane) extraction method from the seeds. The essential oils of the seeds were analyzed by the solid-phase micro-extraction gas chromatography mass spectrometry (SPME-GC/MS). The major compounds of G. hirsutum, C. lachryma-jobi and O. biennis were cyclonexanol (16.65%), β-asarone (14.29%) and ylangene (50.01%). The DPPH radical scavenging activity (IC₅₀) was the highest value of 8.52 mg/mL in the O. biennis. Additionally, IC₅₀ values of G. hirsutum and C. lachryma-jobi were 26.76 mg/mL and 36.81 mg/mL. For the oxidative stress on PC12 cells, we treated with hydrogen peroxide (H₂O₂). The pretreatment of oxidative stress induced PC12 cells with all the essential oils preserved or increased their cell viability and G. hirsutum and O. biennis attenuated the ROS generation (by 68.75% and 56.25% vs. H₂O₂ control). The results of this study suggest that the essential oils derived from medicinal plant seeds could be used as valuable back data as a natural essential oil material to prevent neurodegenerative diseases by protecting neuro-cells.