• 수산경영론집
• /
• 제44권3호
• /
• pp.29-46
• /
• 2013

The purpose of this study is to evaluate the economic validity of artificial reefs facilities and seeds release programs in Jeju Trial Sea Farm Project for raising fishing people's revenue. The results of this study show the artificial reefs facilities and seeds release programs have net present value of 15,962.63 million won, internal rate of retrurn 13.86%, and benefit-cost of 1.912 under a 5.5% social discount rate. This suggests that in Jeju trial sea farm project, artificial reefs facilities and seeds release programs increase fisherperson's revenue.

• 한방안이비인후피부과학회지
• /
• 제15권1호
• /
• pp.31-49
• /
• 2002

This Experimental study was done to research effects of Fagopyrum esculentum Moench(Me-mil) Extract on the anti-allergic effects. The results were obtained as follows : 1. All concentrations of Fagopyrum esculentum Moench Extract(Flours and seeds) inhibit histamine release under the vascular permeability response to intracutanenous injection. The result is proportion to concentration. But, rutin can't get considerable result. 2. All concentrations of Fagopyrum esculentum Moench Extract inhibit histamine release under the vascular permeability response to intraperitoneal injection of SD Rat in comparison with Diphenhydramine which is typical anti-histamine drug. 3. All concentrations of Fagopyrum esculentum Moench Extract inhibit histamine release under the vascular permeability response to per-oral during the three or five days. 4. In the result of quantification of histamine induced Compound $\frac{48}{80}$, Flours and seeds of Fagopyrum esculentum Moench Extract inhibit histamine release. 5. Among the fracination of Fagopyrum esculentum Moench Extract, $CHCl_3$ fraction inhibit histamine release effectively. 6. In the result of genetic manifestative inhibition about the Human mast cell treated PMA and A23187, Fagopyrum esculentum Moench Extract effect in the IL-4 and TNF-${\alpha}$ except IL-5. According to the above results, it is suggested that Fagopyrum esculentum Moench(Me-mil) Extract has anti-allergic effect.

• 한국작물학회지
• /
• 제45권2호
• /
• pp.134-138
• /
• 2000

Most parts of alfalfa plant have been reported to contain autotoxic substances that inhibit seed germination and early seedling growth, however, the chemical(s) is not still studied much. Effect of seed leachates of 'Vernal' alfalfa (Medicago sativa L.) was evaluated for inhibition of alfalfa germination and root growth through bioassay. Alfalfa seeds were extracted in 1 L deionized water for 1 h after soaking and the leachates caused to reduce root length of alfalfa significantly as the soaking time increased. Crude seeds at 4 g L$L^{-1}$ exudated autotoxins that reduce significantly root length by 34 % compared to the control, when the seeds soaked in deionized water for 24 h. However, the extracts did not affect final germination as well as speed of germination. Extracts from ground seeds significantly reduced speed of germination (GT 50) and root length. The results indicate that release of autotoxic substances from seeds during seed imbibition was increased with increase of soaking time and seed amount, and that autotoxicity was more occurred in ground seeds than in crude seeds.

• Journal of Ecology and Environment
• /
• 제48권3호
• /
• pp.277-284
• /
• 2024

Background: Newly introduced transgenic plants can outcompete native species in natural ecosystems, threatening the biodiversity of a country. This study ascertained the weediness potential of plants according to the seed amount under the assumption that transgenic seeds were unintentionally spilled. Using sunflowers as the study system, 0, 50, 100, and 150 seeds were sown in 1 m × 1 m and 2 m × 2 m plots, and seed germination, survival, flowering, and competition between the surviving and wild plants were investigated. Results: There was no significant difference in the germination rate of sunflowers depending on the cultivar, but differences were observed depending on the sowing density and plot size. As the number of seeds sown increased, the flowering and seed maturation of sprouted plants occurred earlier; the plant height and flower length of the surviving plants decreased. In addition, as the number of seeds increased, not only did the early importance of sunflowers increase, but the period of dominance over weeds also improved. Conclusions: These results suggest that the weediness potential of sunflowers varies with the number of seeds at the time of release, which may affect germination and growth, and compete with weeds in transgenic plants.

• 현장농수산연구지
• /
• 제19권1호
• /
• pp.15-23
• /
• 2017

전복 방류 효과를 조사한 결과 크기가 큰 종묘(전중, 3.2 g)를 방류한 월항어촌계가 크기가 작은 종묘를 방류한 화태어촌계에 비하여 방류효과가 좋은 것으로 나타났으며, 방류 후 10개월이 경과된 후 월항어촌계의 해삼 생존율은 66%로 매우 높게 나타났다. 이러한 결과는 방류효과가 종묘의 크기에 따라 큰 차이를 보이는 것으로 나타났다. 또한 방류해역에 따른 해삼의 생산효과를 분석한 결과 어류 가두리 양식장이 밀집한 화태어촌계에서 실험종료 시 성장(6.2 g)과 생존율(32.1%)이 가장 좋은 것으로 나타났는데 이것은 오염도는 높지만 지속적으로 동물성먹이가 공급되는 해역의 생산성이 높다는 것을 의미한다. 따라서 자원조성 및 종 보존을 위해서 어류 양식가두리 저면을 활용하는 것도 고려할 방법으로 판단된다.

• 한국약용작물학회지
• /
• 제17권1호
• /
• pp.68-74
• /
• 2009

Vitis amurensis (VA; Vitaceae) has long been used in oriental herbal medicine. It has been reported that roots and seeds of VA have anti-inflammatory and antioxidant effects. In the present study, the protective effect of ethanol extract from stems and leaves of VA on hydrogen peroxide (${H_2}{O_2}$) (100 ${\mu}M$)-induced neuronal cell damage was examined in primary cultured rat cortical neurons. VA (10-100 ${\mu}g$/ml) concentration-dependently inhibited ${H_2}{O_2}$-induced apoptotic neuronal cell death measured by 3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) assay and Hoechst 33342 staining. VA inhibited ${H_2}{O_2}$-induced elevation of intracellular $Ca^{2+}$ concentration (${[Ca^{2+}]}_i$) and generation of reactive oxygen species (ROS), which were measured by fluorescent dyes. Pretreatment of VA also prevented glutamate release into medium induced by 100 ${\mu}M$ ${H_2}{O_2}$, which was measured by HPLC. These results suggest that VA showed a neuroprotective effect on ${H_2}{O_2}$-induced neuronal cell death by interfering with ${H_2}{O_2}$-induced elevation of ${[Ca^{2+}]}_i$, glutamate release, and ROS generation. This has a significant meaning of finding a new pharmacological activity of stems and leaves of VA in the CNS.

• Preventive Nutrition and Food Science
• /
• 제11권4호
• /
• pp.285-288
• /
• 2006

The anti-adipogenic effect of dongchimi nano juice prepared using a nano-filtering process was investigated by measuring leptin and glycerol levels and the expression of a peroxisome proliferator-activated $receptor-\gamma\;(PPAR\gamma)$ gene as indicators of lipid accumulation or lipolysis. Red pepper powder, seeds of red pepper, garlic, and ginger were added in the preparation of dongchimi. Dongchimi was fermented to reach the optimal fermentation period, followed by nano-filtration in the range of $0.0005\sim0.1\;{\mu}m$. The lactic acid bacteria of dongchimi nano juice were removed completely by a nano-filtering process. Treatment of dongchimi nano juice induced glycerol release in the 3T3-L1 adipocytes and decreased the mRNA expression level of $PPAR\gamma$. These results suggested that dongchimi nano juice may enhance lipolysis and modulate adipogenesis in 3T3-L1 cells.

• 한국잡초학회지
• /
• 제16권3호
• /
• pp.200-209
• /
• 1996

본 연구에서는 양호한 발아력을 가진 잡초종자를 연중 공급하기 위한 한가지 수단으로서 휴면을 가능한 한 빨리 타파시킨 후 이를 건조 상태로 보관하여 사용하는 방법에 대해서 그 가능성을 검토하여 보았다. 즉 몇 가지 잡초종자의 휴면을 가장 빨리 타파시키는 저장조건을 찾고 만일 습윤조건에서 휴면타파가 양호할 경우에는 건조조건으로 옮겨 저장하였을 때 실용상 문제가 될 정도의 발아율감소가 관찰되는지를 조사하여 보았다. 잡초종자의 바람직한 휴면타파 저장조건 및 기간은 명아주와 봄여뀌의 경우 각각 저온건조 1개월, 저온습윤 2-3개월, 쇠별꽃은 실온건조 1개월, 벼룩나물과 뚝새풀은 실온습윤 2개월, 그령은 저온습윤 1개월, 수크령 종자는 저온습윤 1개월 또는 실온건조 3개월, 알방동사니는 실온습윤 1개월 또는 저온습윤 3개월, 강피는 저온담수에 3개월간 저장하는 것이었다. 이들 저장조건중에서 습윤 또는 담수조건에서 휴면타파가 효과적이었던 종자를 건조조건으로 저장변환시켰을 경우 실용상 문제가 될 정도의 발아력 감소는 없었다. 즉 벼룩나물, 뚝새풀, 그령, 알방동사니 종자를 음건시켜 저온 또는 실온하에 저장하여도 발아율 감소가 관찰되지 않았다. 수크령의 경우는 저장변환 1개월 후 발아율 감소가 일어났지만 저장기간이 길어짐에 따라 회복되었다. 저온담수에 보관된 강피의 경우는 실온건조에 보관하면 저온건조에 저장한 것보다 25% 정도 높은 발아율을 나타내었다. 따라서 이들 종자들에 대해서는 습윤 또는 담수조건에서 빠르게 휴면을 타파시킨 다음 이를 건조조건으로 옮겨서 사용하고자 하는 전략이 효과적으로 적용될 수 있을 것으로 생각되었다. 그러나 봄여뀌의 경우에는 건조로 인한 이차휴면은 관찰되지 않았으나 모든 저장조건에서 저장기간이 길어짐에 따라 발아율이 현저히 감소하는 특정을 보였기 때문에 실용적인 사용을 위해서는 저온습윤조건에 3개월 보관후 사용하든지, 농황산 처리와 같은 어떠한 다른 처리가 필요할 것으로 판단되었다. 한편 저온습윤저장에서 거의 발아하지 않고 있던 강피 종자를 실온건조 조건으로 변환시키면 저온습윤에 계속해서 저장하고 있었던 것에 비하여 높은 발아력이 유기되었다.

• 한국식품영양과학회지
• /
• 제43권9호
• /
• pp.1342-1348
• /
• 2014

건강에 대한 관심의 증가로 천연식품뿐만 아니라 산업 부산물을 이용한 기능성 소재 탐색에 대한 연구들이 활발하게 진행되고 있다. 본 연구에서는 산업 부산물인 잣송이를 이용하여 초임계 방법으로 추출을 하여 항비만 식품 소재로서의 기능성을 알아보고자 하였다. 분화된 3T3-L1 지방세포에서 잣송이 초임계 추출물이 지방의 축적 및 지방분해에 미치는 영향을 확인한 결과, 잣송이 초임계 추출물을 1, $5{\mu}g/mL$ 농도로 처리 시 세포 내 지방 축적이 억제되었고 중성지방분해 산물인 glycerol의 함량은 증가하였다. 잣송이 초임계 추출물이 지방합성 효소 및 지방분해 효소에 미치는 영향을 알아보기 위해 real-time PCR을 실시한 결과, 잣송이 초임계 추출물은 지방합성 효소인 FAS에 아무런 영향이 나타나지 않았고, 지방분해 효소인 LPL과 HSL의 유전자 발현이 증가됨에 따라 세포 내 중성지방이 지방산과 glycerol로 분해되었음을 확인하였다. 따라서 이 결과들은 잣송이 초임계 추출물이 지방조직에서의 LPL과 HSL 유전자 발현 증가를 통한 지방분해로 항비만 효과를 나타냄을 보여주고 있다. 잣송이 초임계 추출물이 항비만 생리활성을 나타내는 기능성 식품 신소재로서 개발 가능성이 있을 것으로 사료된다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권9호
• /
• pp.3779-3783
• /
• 2015

Dietary prevention has been known to reduce breast cancer risk. Sesamin is one of the major components in sesame seeds and has been widely studied and proven to have anti-proliferation and anti-angiogenic effects on cancer cells. In this study, the influence of sesamin was tested in the human breast cancer MCF-7 cell line for cell viability (MTT assay) and cell cycling (flow cytometry). Results showed that sesamin dose-dependently (1, 10 and $50{\mu}M$) reduced the cell viability and increased LDH release and apoptosis (TUNEL assay). In addition, there was a significant increase of sub-G1 phase arrest in the cell cycle after sesamin treatment. Furthermore, sesamin increased the expression of apoptotic markers of Bax, caspase-3, and cell cycle control proteins, p53 and checkpoint kinase 2. Taken together, these results suggested that sesamin might be used as a dietary supplement f or prevention of breast cancer by modulating apoptotic signal pathways and inhibiting tumor cell growth.