• 공업화학
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• 제26권5호
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• pp.549-556
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• 2015

한약재에서 추출한 해충기피용액과 실리카를 혼합하여 해충기피 실리카 졸을 제조하고, 분무건조법을 이용하여 마이크로 단위의 해충기피용액이 포함된 다공성 구형 분말을 제조하였다. 분무건조법을 통해 제조된 해충기피 분말의 특성분석을 위해 해충기피 졸의 농도(해충기피용액, 실리카) 및 분무 건조 장비의 조건에 따라 분말 모폴로지, 입자크기별 입경분포, 열적 안정성 분석을 실시하였다. 해충기피 졸의 농도가 4, 7 wt% 및 10 wt%일 때 각각 평균 입자 크기가 8.3, $9.5{\mu}m$ 및 $11.7{\mu}m$ 순으로 농도가 증가할수록 분말의 직경이 커졌다. 반면에 빠른 가스 주입속도 상태에서 노즐입구온도 및 용액주입속도 증가에 의한 분말 입경의 증가는 미미하였다. 또한, 열중량 분석법을 통하여, 구형의 다공성 분말 안에 해충기피 용액이 담지 되어있고, 이들은 $200^{\circ}C$까지 열적 안정성이 확보됨을 확인하였다. 분무건조를 통한 해충기피 분말은 평균 $9{\sim}10{\mu}m$이고, 열적 안정성을 가지므로 컴파운딩 및 필름제조공정에 응용이 가능할 것으로 기대된다.

• 한국산학기술학회논문지
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• 제5권4호
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• pp.279-281
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• 2004

100%천연향을 이용하여 제작, 개발된 해충기피제의 기피력을 테스트하였다. 해충기피제를 착용한 그룹과 착용하지 않은 그룹으로 구분하여 실험실에서 사육한 모기와 서해안에 위치한 몽산포 해수욕장, 동해안에 위치한 낙산 및 설악 해수욕장과 천안에 있는 태조산에서 해충에 대한 기피력을 측정하였으며, 각 그룹별로 5명씩 5회에 걸쳐 각 회당 1시간동안에 흡혈개체로부터 물린 갯수를 확인하여 이들의 평균값을 계산하였다. 그 결과, 실험실에서는 91%,몽산포 해수욕장에서는 78%, 낙산 및 설악 해수욕장에서는 93%, 태조산에서는 90%의 기피력을 보여주었으며, 이는 상당히 탁월한 기피효과를 나타내었다.

• Corrosion Science and Technology
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• 제17권2호
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• pp.74-80
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• 2018

The electronic industries require environmentally-friendly and highly functional materials to enhance the quality of human life. Home appliances require insect repellent steels that work to protect household microwave ovens from incurring damage by insects such as fire ants and cockroaches in tropical regions. Thus, POSCO has developed new types of functional steels, coated with an array of organic-inorganic hybrid composites on the steel surface, to cover panels in microwave ovens and refrigerators. The composite solution uses a fine dispersion of hybrid solution with polymeric resin, inorganic and a pyrethroid additive in aqueous media. The hybrid composite solution coats the steel surface, by using a roll coater and is cured using an induction curing furnace on both the continuous galvanizing line and the electro-galvanizing line. The new steels were evaluated for quality performances, salt spray test for corrosion resistance and biological performance for both insect repellent and antimicrobial activity. The new steels with organic-inorganic composite coating exhibit extraordinarily biological functionalities, for both insect repellent and antimicrobial activities for short and long term tests. The composite-coating solution and experimental results are discussed and suggest that the molecular level dispersion of insecticide on the coating layer is key to biological functional performances.

• 펄프종이기술
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• 제48권3호
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• pp.80-90
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• 2016

The purpose of this study was to investigate the functional properties of natural dyed Hanji for cultural properties conservation and storage. To estimate functional properties of Hanji, antimicrobial, insect repellent test, and Oddy test were executed. Hanji dyed with 10% Golden thread (Coptis chinensis), a natural dye and silver nitrate mordanting showed the most excellent antifungal activities against A. niger, P. chrysogenum, and Trichoderma sp. before and after aging. The insects repellent test followed didn't indicate significant effects on treated Hanji against Lasioderma serricorne, Sitophilus zeamais, and Tribolium castaneum. According to Oddy test result, Hanji dyed with Golden thread and silver nitrate caused no significant corrosions on copper, silver, and lead after aging 28 days.

• 한국포장학회지
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• 제27권1호
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• pp.9-16
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• 2021

The present study was conducted to accomplish management efficiency by preparing preemptive measures for consumer dissatisfaction and overcome risks caused by Global Warming through studies of model cases in packaging. Through this study, we made it possible to find a way for companies to prepare for Global warming and consumer dissatisfaction. By contributing to eco-friendly packaging, we are trying to preemptively respond to recent major issues through packaging. Through this experiment, we tried to measure the degree of penetration of Plodia interpunctella H. larva into the insect repellent film produced by printing Ink containing a natural repellent. The control experiment was conducted with an untreated LDPE film to which no insect repellent was applied. The numbers decreased from 17 to 7 when the film was processed with repellent to show experimental results verifying effects of repellent by decrease in 10 (58.8% Decrease). Such results show that it is safe when the film is unfolded but in the case where the film is folded, the Plodia interpunctella H. punches through the film to lead to consumer dissatisfaction and it suggests that this can bring on risks to corporate management. Considering that most of the film is folded in the case of PE bag packaging, the direction which the corporations should take in terms of preparing for climate change countermeasures and consumer dissatisfaction has been clarified. Due to it receiving satisfactory results in safety rest results for printing film applied with pest repellent as well as the Quality analysis to test repellent contents of repellent film, it is certain that the importance of repellent method in packaging will increase in preparing for consumer dissatisfaction and actions against climate change henceforth.

• 한국포장학회지
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• 제19권2호
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• pp.81-85
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• 2013

본 연구의 목적은 식품 포장재를 뚫고 침입하여 식품에 큰 피해를 입히는 화랑곡나방 유충의 유입을 방지하기 위한 방충향낭을 개발하는 것이다. 방충 물질로는 해충에 대해 살충 및 기피력을 가지는 것으로 알려진 회향의 에센셜오일인 회향오일(FO)을 선정하였다. 훈증테스트를 통하여 화랑곡나방 유충에 대해 FO의 훈증사멸 효과를 관찰하였고 120시간 후 FO은 약 56%의 사멸률을 보였다. 이 후 포장기법 중 하나인 향낭 기법을 사용하여 FO 향낭을 제조하여 기피효과를 측정하였다. 그 결과, FO 향낭은 무처리구와 비교하여 유의적인 기피효과를 보였다. 하지만 휘발성이 강한 에센셜오일의 특성으로 인해 48시간에서의 기피력이 24시간이 지난 향낭의 기피력보다 낮은 것을 볼 수 있었다. Gas chromatography를 이용한 FO 향낭의 방출 경향 분석에 따르면 오일의 총 방출량 및 trans-aenthole의 함량이 일정 시간 이후 점차 방출량이 줄어드는 경향을 보였다. 따라서 FO 향낭은 방충력을 가지는 것으로 분석되지만 높은 휘발성으로 인해 기피력은 시간이 지날수록 감소할 것으로 보인다.

• 셀메드
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• 제4권2호
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• pp.8.1-8.6
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• 2014

Despite the remarkable advancements of the modern medicine, the traditional system of medicine (TSM) still serves as a potential primary health care modality in the in low- and middle-income countries. The recent reports suggest that there is a renewed interest has been observed towards TSM in the developed countries too, because of the adverse side-effect of modern medicines. Medicinal plants have been widely serving as a rich source of therapeutic agent. Ethiopia is one of the most reserves rich countries in the world. It is renowned for well-diversified and natural resources in terms of its unique flora and fauna. Ethiopian deep-rooted tradition and culture largely depends on the usage of plants for their religious ceremonies, impressive festivals, traditional medicinal uses and other basic necessities. The present scrutiny is an attempt to understand the omnipotent nature of an Ethiopian Ethnomedicinal plant called Tinjute [vernacular name (local native language, Amharic); Otostegia integrifolia]. There are several studies suggest that Tinjute can be used as a natural medicine or health-promoting agents for various disorders and ailments. Nevertheless, in Ethiopia, it is renowned as an insect repellent to drive-away insect vector of diseases, particularly mosquitoes in the early evening. However, there are many more issues and challenges which must be urgently addressed to scientifically formulate various potent, efficacious, safe and highly selective phytotherapeutic agents and insects' repellent from the Tinjute plant in the near future.

• 한국유기농업학회지
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• 제21권4호
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• pp.685-699
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• 2013

본 연구는 유기농 배추재배를 위한 주요 해충 방제를 위한 push-pull 전략 수립을 하고자 유인 또는 기피식물의 효과를 평가하였다. 2012년 충남 서산의 유기농 배추재배농가에서 발생하는 배추좀나방, 배추잎벌레, 진딧물, 비단노린재 및 갈색노린재에 대한 메리골드, 호밀, 부추, 상추, 치커리, 농우-치커리, 쑥갓, 트레비소 및 겨자채 등, 9가지의 식물에 대한 유인 또는 기피효과를 평가하였다. 10종의 유인 및 기피식물 중에서, 호밀과 치커리는 갈색날개노린재와 비단노린재를 각각 강하게 유인하였다. 진딧물은 다른 식물보다 호밀에 선택적으로 유인되었다. 겨자채는 비단노린재, 갈색날개노린재 순으로 유인하였다. 비단노린재는 상추와 부추 혼작처리에 유인되었다. 유기농 배추포장에서 쑥갓, 트레비소, 청겨자의 단독 또는 혼합처리는 배추잎벌레, 배추좀나방, 비단노린재, 진딧물, 갈색날개노린재의 발생을 강하게 기피하였다. 상기 결과들은 선발한 해충 유인 및 기피식물은 배추의 종합적 해충방제를 위한 인자로 사용할 수 있을 것으로 사료된다.

• Fisheries and Aquatic Sciences
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• 제12권1호
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• pp.1-5
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• 2009

Crude saponin, extracted from the starfish Asterias amurensis, was assessed for its capacity as a biological pesticide. As part of this analysis, its insecticidal and repellent activities, in addition to its acute and chronic toxicities were tested. In comparison with the control group, insecticidal activity of saponin against tobacco cutworm, Spodoptera litura, in kale, Brassica loeracea was low at 36.4%. Repellent activities of the extracted saponin against green peach aphid, Myzus persicae, and S. litura, on soybean leaf, Glycine max and kale were 65.6% and 35.0% at $1^{st}$ day, and 54.5% and 30.0% at $3^{rd}$ day, respectively. Acute and chronic toxicity analysis was carried out using acute immobilizatioin test and reproduction impairment test, respectively. The saponin had 48 h-$EC_{50}$ of $65.21{\mu}g/mL$. Twenty-one day accumulative reproduction after treatment was lower in Daphnia magna at $7{\mu}g/mL$ saponin (78 youngs), compared with the control group (129 youngs). These results indicate that the extracted saponin exhibited some toxicity and has potential as a repellent against insects.

• 보존과학회지
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• 제36권4호
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• pp.255-263
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• 2020

Paulownia coreana has various advantages as a convenient workability, aesthetic outlook, beautiful patterns, low weight and high strength, and its permeability. P. coreana has been widely used for storage but there are no empirical researches proving its functionality in a field of conservation science until now. In this study, the seasonal and daily temperature and relative humidity control, and microbe and insect repellent activity were evaluated under the controlled and uncontrolled circumstances from 2015 to 2016. The results showed to be mainly excellent in relative humidity control and the buffering effect was good to adjust the average daily relative humidity range from the outside. With respect to the antimicrobial properties of P. coreana, we observed that its water-soluble extract produced visible zones of inhibition against five bacteria. However, it was difficult to predict the antimicrobial and/or insecticidal properties.