• 융합정보논문지
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• 제11권5호
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• pp.215-222
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• 2021

본 연구는 해양자원인 만두멍게와 분홍멍게의 항산화 효과를 검증하여 기능성 화장품 소재 가능성을 확인하는데 목적이 있다. 본 연구에서는 만두멍게와 분홍멍게 에탄올 추출물의 항산화 효능을 확인하기 위하여 DPPH 소거능 및 ABTS 소거능, 폴리페놀 항산화 물질 함량, NO 생성 억제능 분석을 통하여 항산화 활성을 측정하기 위해서 항산화 실험을 진행하였다. 본 연구의 결과는 다음과 같다. 만두멍게와 분홍멍게의 추출물은 각종 radical(DPPH, ABTS, NO) 소거 효과 결과, 20 mg/ml 농도에서 DPPH는 만두멍게가 30.87±1.98%, 분홍멍게가 88.27±0.84%, ABTS는 만두멍게가 56.23±2.50%, 분홍멍게가 94.80±0.91%, NO는 만두멍게가 88.57±0.81%, 분홍멍게가 97.53±0.34%로 모두 유의한 차이가 있었다. 특히 총 폴리페놀 함량을 통해 분홍멍게의 항산화 물질 추출에 사용된 용매의 효율은 중요한 인자로 작용함을 확인하였다. 따라서 항산화 효과가 뛰어난 분홍멍게를 주물질로 첨가하여 만두멍게와 분홍멍게를 조합한 기능성 화장품 개발 가능성을 제시할 수 있다.

• 환경생물
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• 제38권1호
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• pp.179-188
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• 2020

The influx of marine exotic and alien species is disrupting marine ecosystems and aquaculture. Herdmania momus, reported as an invasive species, is distributed all along the coast of Jeju Island and has been confirmed to be distributed and spread to Busan. The potential habitats and distribution of H. momus were estimated using the maximum entropy (MaxEnt) model, quantum geographic information system (QGIS), and Bio-ocean rasters for analysis of climate and environment(Bio-ORACLE), which can predict the distribution and spread based only on species occurrence data using species distribution model (SDM). Temperature and salinity were selected as environmental variables based on previous literature. Additionally, two different representative concentration pathway (RCP) scenarios (RCP 4.5 and RCP 8.5) were set up to estimate future and potential habitats owing to climate change. The prediction of potential habitats and distribution for H. momus using MaxEnt confirmed maximum temperature as the highest contributor(77.1%), and mean salinity, the lowest (0%). And the potential habitats and distribution of H. momus were the highest on Jeju Island, and no potential habitat or distribution was seen in the Yellow Sea. Different RCP scenarios showed that at RCP 4.5, H. momus would be distributed along the coast of Jeju Island in the year 2050 and that the distribution would expand to parts of the Korea Strait by the year 2100. RCP 8.5, the distribution in 2050 is predicted to be similar to that at RCP 4.5; however, by 2100, the distribution is predicted to expand to parts of the Korea Strait and the East Sea. This study can be utilized as basic data to effectively control the ecological injuries by H. momus by predicting its spread and distribution both at present and in the future.

• 환경생물
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• 제38권4호
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• pp.625-633
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• 2020

The effects of temperature and salinity on egg development and settlement of the ascidian Herdmania momus were investigated. Adult specimens were collected from the Dodu Yacht facility in Jeju Island, Korea(33°30'30.54"N, 126°27'55.46"E) in August 2018. Egg development and larval settlement were observed and recorded at 8 h intervals using a stereomicroscope, under nine temperature (10, 13, 16, 19, 22, 25, 28, 31, and 34℃), and four salinity regimens (28, 30, 32, and 34 psu). The highest hatching rate (82.8±7%) was observed at 32 psu and 25℃ and the lowest hatching rate (1.0±2%) was at 34 psu and 13℃. The developmental rate (0.222±0.0994) was highest at 28 psu and 28℃, and lowest (0.016±0.008) at 30 psu and 13℃. The highest settlement success rate (77.1±5%) was at 32psu and 25℃ and the lowest(0.1±1.0%) was at 30psu, and 13℃. The rate of settlement(0.080±0.000) was highest at 28psu and 28℃, and lowest(0.013±0.000) at 30psu and 13℃. Both hatching and settlement success rates increased as temperature increased and tended to decrease beyond an optimal temperature range. Herdmania momus preferred 30-34 psu salinity and 22-25℃ temperature. This study provides baseline information about the life history of H. momus, and important data to control the damage caused by the increase in number and distribution of this invasive ascidian.