• 한국작물학회지
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• 제65권2호
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• pp.84-92
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• 2020

콩 발아기간 중 몇 가지 면역활성제(자스몬산, 키토산, 베타글루칸 및 게르마늄)와 녹차 및 인삼 추출물이 이소플라본 함량 증대에 미치는 영향에 대하여 알아보았다. 1. 대부분의 처리에서 발아시간이 경과함에 따라 이소플라본 함량이 높아졌는데 면역활성제 중에서는 키토산 처리가 이소플라본 함량 증대에 가장 큰 효과가 있었으며 약초추출물 처리는 효과가 미미하였다. 2. 품종별 이소플라본 함량은 모든 처리에서 대풍2호>우람>풍산나물콩의 순서로 높았으며 이소플라본 함량은 품종과 biotic 물질 처리간 상호작용도 영향을 미치는 것으로 판단된다. 3. 개별 이소플라본 종류별 함량을 분석한 결과 malonyl-glucoside>glucoside>aglycone>acetyl-glucoside 순서로 함량이 높았으며 발아가 진행되면서 aglycone 함량이 증가하는 경향이었다. 따라서 콩 발아기간 중 biotic 물질 처리는 어느 정도 이소플라본 함량을 증대시키며 품종과 물질처리간 상호작용 효과도 있음을 확인할 수 있었다.

• 환경생물
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• 제34권4호
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• pp.281-291
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• 2016

Bloom of small centric diatom Stephanodiscus is quite occasional in winter season in temperate freshwater ecosystems. It often leads to degradation of water quality and affects the quality of supplied drinking water. In a previous study, we have found that naphthoquinone (NQ) 4-6 derivate is an effective tool for efficient mitigation of natural S. hantzschii blooms. In the present research, polylactide (PLA) and agar foam were used as immobilized agent for NQ 4-6 to improve the efficiency of NQ 4-6 compound releasing process for its application under various field conditions. Mesocosm experiments at 10 ton scale suggested that the abundance of S. hantzschii was continuously increased in the control and upon treatment of the mesocosm with immobilized NQ 4-6 from PLA and agar foam. Their algicidal activities were 78.8% and 77.1%, respectively, on S. hantzschii after 10 days. In the mesocosm experiments, the dynamics of biotic (bacteria, HNFs, ciliates, zooplankton) and abiotic (water temperature, dissolved oxygen, pH, conductivity, nutrients) factors remained unaffected. They exhibited similar trends in the control and treatment groups. Therefore, the immobilized NQ 4-6 from PLA and agar foam has potential to be used as an alternative algicidal substance to effectively mitigate natural S. hantzschii blooms under various field conditions. In addition, it not only can be used to control S. hantzschii, but also is an effective technique. The immobilized NQ 4-6 showed stable controlled release in desired system.