• Journal of Nutrition and Health
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• 제53권2호
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• pp.190-202
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• 2020

세계적으로 식용곤충은 중요한 잠재적 미래식량으로 전망되고 있으며, 식용곤충 및 이를 이용한 제품을 개발하고 보급하기 위해서는 식용곤충에 대한 소비자 인식에 대한 연구가 필요하다. 이에 본 연구에서는 성인 453명 (남자 172명, 여자 281명)을 대상으로 2018년 12월부터 2019년 1월까지 식용곤충에 대한 인식, 구매 및 섭취 실태를 설문조사한 후 성별 및 연령에 따라 비교 분석하였다. 식용곤충을 인지하고 있는 대상자는 87.0% 이었으며, 알고 있는 식용곤충의 종류는 벼메뚜기 (92.4%), 누에번데기 (70.3%) 순이었고 식용곤충에 대한 정보는 방송·신문·잡지·인터넷 기사 및 광고에서 얻는다는 응답 (36.8%)이 가장 높았다. 식용곤충(제품)의 구매 또는 섭취 경험은 남자가 여자보다 유의하게 높았으며 (45.9% vs. 31.0%, p < 0.01), 연령증가에 따라 유의적으로 높았다 (p < 0.001). 이용해본 식용곤충 종류는 누에번데기 (76.5%), 벼메뚜기 (63.9%) 순이었으며, 구매한 곳은 음식점 (42.2%), 제품의 형태는 조리식품 (42.2%)이 가장 높았고, 이용한 주된 이유는 호기심에서 (30.1%), 식품 섭취 목적으로 (23.5%), 맛이 있어서 (22.9%) 순이었다. 식용곤충의 만족도는 맛 (3.4점), 가격 (3.3점), 품질 (3.3점), 안전성(3.1점), 모양 및 외형 (2.7점) 순이었으며, 특히 모양 및 외형의 경우 60대 이상이 유의하게 높았다 (p < 0.001). 식용곤충(제품)에 대한 향후 이용 의사는 남자가 여자보다 높았으며 (65.7% vs. 42.3%, p < 0.001), 연령 증가에 따라 유의하게 높았다 (p < 0.001). 식용곤충 이용 의사에 대한 이유는 영양적 측면 (3.6점), 건강관리 측면 (3.4점), 환경적 기여 (3.3점), 호기심 (3.2점), 맛(2.8점) 순이었으며, 식용곤충 이용 의사가 없는 이유는 거부감 (4.1점), 신체적 안전 우려 (3.5점), 제품의 낮은 신뢰 (3.5점), 비싼 가격 (3.2점) 순이었다. 식용곤충에 대한 거부감은 여자가 남자보다 유의하게 높았으며 (4.3 vs. 3.9, p < 0.001), 연령이 낮을수록 높았다 (p < 0.001). 식용곤충 이용 시 필요한 정보는 원산지 (63.8%)가 가장 높았으며, 선호하는 제품의 형태는 분말형태 (39.5%), 음식에 첨가 (24.1%), 환 형태 (20.1%) 순이었다. 이상의 연구결과를 종합할 때 소비자들의 식용곤충(제품)에 대한 높은 인지도에 비해 실제 이용 경험이나 향후 이용 의사는 낮았으며, 특히 여자와 낮은 연령층에서 낮았다. 또한 식용곤충의 모양 및 외형에 대한 만족도가 가장 낮아 식용곤충을 이용하지 않는 주된 이유인 거부감으로 인식되는 것으로 나타남으로써 앞으로 여성과 젊은 층의 식용곤충에 대한 인식을 긍정적으로 전환시키고 다양한 소비자 요구를 반영하는 노력이 필요하다는 것을 제안한다.

• Journal of Animal Science and Technology
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• 제64권3호
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• pp.409-431
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• 2022

Various insects have emerged as novel feed resources due to their economical, eco-friendly, and nutritive characteristics. Fish, poultry, and pigs are livestock that can feed on insects. The digestibility of insect-containing meals were presented by the species, life stage, nutritional component, and processing methods. Several studies have shown a reduced apparent digestibility coefficient (ADC) when insects were supplied as a replacement for commercial meals related to chitin. Although the expression of chitinase mRNA was present in several livestock, indigestible components in insects, such as chitin or fiber, could be a reason for the reduced ADC. However, various components can positively affect livestock health. Although the bio-functional properties of these components have been verified in vitro, they show positive health-promoting effects owing to their functional expression when directly applied to animal diets. Changes in the intestinal microbiota of animals, enhancement of immunity, and enhancement of antibacterial activity were confirmed as positive effects that can be obtained through insect diets. However, there are some issues with the safety of insects as feed. To increase the utility of insects as feed, microbial hazards, chemical hazards, and allergens should be regulated. The European Union, North America, East Asia, Australia, and Nigeria have established regulations regarding insect feed, which could enhance the utility of insects as novel feed resources for the future.

• 한국군사과학기술학회지
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• 제10권1호
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• pp.130-143
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• 2007

Using steady state aerodynamic theories, it has been claimed that insects and birds cannot fly. To make matters worse, insects and birds fly at low Reynolds numbers. Therefore, a recurring theme in the literature is the importance of understanding unsteady aerodynamic effect and how the vortices behave when they separate from the moving surface that created them. In flapping flight, birds and insects can modify wing beat amplitude, stroke angle, wing planform area, angle of attack, and to a lesser extent flapping frequency to optimize the generation of lift force. Some birds are thought to employ two different gaits(a vortex ring gait and a continuous vortex gait) and unsteady aerodynamic effect(Clap and fling, Delayed stall, Wake capture and Rotational Circulation) in flapping flight. Leading edge vortices may produce an increase in lift. The trailing edge vortex could be an important component in gliding flight. Tip vortices in hovering support the body weight of the hummingbirds. Thus, this study investigated how insects and birds generate lift at low Reynolds numbers. This research is written to further that as yet incomplete understanding.

• Journal of the Korean Wood Science and Technology
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• 제31권2호
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• pp.69-76
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• 2003

곤충에 의한 침해는 건물의 앞쪽기둥에서 피해정도가 가장 크게 나타났다. 또한 기둥의 밑 부분과 중간부분, 그리고 윗부분 등 높이별로 구멍의 지름이 많은 차이가 있어, 각 부위별 가해 곤충의 종류가 틀린 것으로 판단되었다. 기둥의 높이별로는 기둥의 중간 정도의 높이에서 가장 피해가 큰 것으로 관찰되었다. 목재를 가해한 곤충의 크기를 짐작할 수 있는 구멍의 직경은 1 mm에서 10 mm까지 다양하였으며 대략 직경 5 mm 정도가 가장 많이 나타났다.

• The Plant Pathology Journal
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• 제27권4호
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• pp.360-366
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• 2011

Bacterial leaf spot of Euphorbia pulcherrima has been reported in many countries. Characterization by polyphasic approaches indicated that the isolates from India, USA and New Zealand could be distinguished based on rep-PCR profiles and gyrB phylogenies, while the Chinese isolates should be ascribed to Xanthomonas axonopodis pv. poinsettiicola.

• 한국산업융합학회 논문집
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• 제23권2_1호
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• pp.125-137
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• 2020

Tracking micro-sized insects is one of the challenges of protecting ecosystems and biodiversity. In this study, we propose an approach for the autonomous tracking of micro-sized flying insects, and develop an unmanned aerial vehicle (UAV)-based robotic system. The Kalman filter is applied to the received signal strength emitted from radio telemetry to estimate the position while reducing the measurement error and noise. The autonomous tracking strategy is a method in which the UAV rotates at one point to measure the signal strength and control its position in the strongest direction of the signal. We also design a system architecture comprising a tracking sensor system and a UAV system for micro-sized insects. The estimation and autonomous tracking of the target position by the proposed system are verified and evaluated through dynamic simulation. Therefore, in this study, we propose and validate a UAV-based tracking system for micro-sized flying insects, which has not been proposed in studies conducted thus far.

• 한국응용곤충학회지
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• 제58권2호
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• pp.121-127
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• 2019

인간의 심미에 영향을 미치는 다양한 활동 중에서 곤충의 역할을 다루는 학문 분야를 문화곤충학이라고 한다. 본 연구는 근대 시조문학작품 속에 등장하는 곤충의 종류를 문화곤충학적 관점에서 조사하였다. 조사대상 문학작품은 6,604편의 근대 시조를 대상으로 하였는데 곤충 관련 어휘들을 조사하였다. 조사 시조들 중 곤충 관련 어휘가 등장하는 시조는 215편이었으며 제목에 곤충 관련 단어가 포함되어 있는 시조 작품들은 26편이었다. 곤충관련 어휘들은 모두 257번 등장하였는데 30종류의 곤충으로 구별할 수 있었다. 가장 많이 사용된 곤충류 어휘는 나비로 57회 등장하였으며 귀뚜라미가 45회, 벌레가 44회였다. 다양한 예술작품들을 통해 문화곤충학 분야의 연구가 필요할 것으로 생각된다.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제5권1호
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• pp.21-27
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• 2024

Harmful pet insects, if not controlled, can negatively affect people, plants and their surrounding environment. In Vietnam, all crops are regularly impacted by pest insects. In serious cases, crops can be totally destroyed by insect pests. Harmful insects that damage crops often grow fast and increase rapidly. Therefore, research on insects is crucial for managing pests, protecting crops, and forecasting pest situation in the following years. This study aimed to collect data regarding changes of pests on rice and corn as two main crops in four provinces in Red River Delta of Vietnam, including Thai Binh, Nam Dinh, Ha Nam, and Hung Yen, from 2018 to 2022. Primary data were collected from reports of government agencies and official statistics. Based on these data, this study evaluated changes of pest insects in five years, discussed reasons for such changes and response methods, and forecasted pest's behavior in the following years. Significant findings of this study include the fact that Vietnam has to face many difficulties to develop its agricultural sector. For insect management, an essential action is to do ground surveys to gather all related data including weather data, pesticide data, crop yield, and product quality. This information is meaningful for finding out causes of changes, understanding relationships between insects and surrounding factors, and predicting the situation in the following years.

• The Plant Pathology Journal
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• 제25권4호
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• pp.429-432
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• 2009

An unreported disease of apricot was observed in orchards in Zhejiang province, China. Symptoms started as water soaked lesions on the fruit surface. Later, water-soaked areas developed and spread to the entire fruit, resulting in soft rot of the whole fruit. The causal organism isolated from symptomatic fruits was identified as Burkholderia cepacia based on its biochemical and physiological characteristics and confirmed by the cellular fatty acid composition and Biolog data as well as 16S rRNA gene sequence analysis. The bacterial isolates caused similar symptoms when inoculated onto fruits of apricot. In addition, European plum, Japanese plum, nectarine and kiwifruit were susceptible to the B. cepacia pathogen. However, the B. cepacia pathogen failed to cause any visible symptoms when it was inoculated onto 16 other fruits. This is the first report of a bacterial disease of apricot caused by B. cepacia in China.

• Journal of Microbiology and Biotechnology
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• 제19권10호
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• pp.1250-1258
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• 2009

Bacillus spp., as a type of plant growth-promoting rhizobacteria (PGPR), were studied with regards promoting plant growth and inducing plant systemic resistance. The results of greenhouse experiments with tobacco plants demonstrated that treatment with the Bacillus spp. significantly enhanced the plant height and fresh weight, while clearly lowering the disease severity rating of the tobacco mosaic virus (TMV) at 28 days post-inoculation (dpi). The TMV accumulation in the young non-inoculated leaves was remarkably lower for all the plants treated with the Bacillus spp. An RT-PCR analysis of the signaling regulatory genes Coil and NPR1, and defense genes PR-1a and PR-1b, in the tobacco treated with the Bacillus spp. revealed an association with enhancing the systemic resistance of tobacco to TMV. A further analysis of two expansin genes that regulate plant cell growth, NtEXP2 and NtEXP6, also verified a concomitant growth promotion in the roots and leaves of the tobacco responding to the Bacillus spp.