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Xing Fu Yin,전영은,정희철,정세영,심재훈,강일준 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.1
The efficacy of Aster sphathulifolius (AS) for evaluation of preventive potencies against diabetes and diabetic complications was analyzed by assessment of inhibitory effects against advanced glycation end-products (AGEs) formation, rat lens aldose reductase (RLAR), α- glucosidase activity, and scavenging effects against DPPH. The 50% ethanol extract showed the highest DPPH radical scavenging activity (82.38%) at a concentration of 100 μg/ mL, exhibited the most potent AGEs formation inhibitory effect (93.88%) at a concentration of 200 μg/mL, showed the most potent RLAR inhibitory effect (86.44%) at a concentration of 11.11 μg/mL. The 95% ethanol extract showed a potent α-glucosidase inhibitory activity (19.16%) at a concentration of 1 mg/mL. The 50% ethanol extract value was 16.79%. The 50% ethanol extract exhibited the most potent antioxidant and preventive actions against diabetes and diabetic complications and can, thus, be a source of valuable compounds for prevention of diabetes and diabetic complications.
Piao, Yin-Xing,Won, Yong-Yuk,Han, Sang-Kook Wiley Subscription Services, Inc., A Wiley Company 2009 MICROWAVE AND OPTICAL TECHNOLOGY LETTERS Vol.51 No.9
<P>We propose a new linearization scheme in optical external modulator employing high-pass filter characteristic of a gain saturated reflective semiconductor optical amplifier for an analog optical transmission system. The proposed scheme is based on power level relation between fundamental signal and IMD3 signal when a radio-frequency tone is modulated, using an optical modulator at linearity region of transfer curve. Based on the proposed idea, a linearized optical transmitter module is implemented and evaluated. The proposed scheme is demonstrated and verified using a small scale test-bed. Both carrier-to-interference ratio and spurious-free dynamic range are improved. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2100–2103, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24545</P>
윤성복(Xing Fu Yin),전영은(Young Eun Jeon),김태근(Tae-Keun Kim),심재훈(Jae-Hoon Shim),강일준(Il-Jun Kang) 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.11
본 연구는 타락죽의 안전성을 확보하기 위해서 30 kGy 감마선 조사된 타락죽을 ICR 마우스에 3개월간 섭취시킨 다음 독성평가를 수행하였다. 비조사 타락죽 및 30 kGy 조사 타락죽을 암수 마우스에 투여를 한 결과 시험기간 동안 시험 물질에 의한 임상증상이나 폐사 동물을 나타나지 않았으며, 체중변화, 사료섭취량 및 주요 장기 무게도 대조군에 비해 차이를 보이지 않았다. 혈액학적 검사 및 혈청학적 검사 모두 정상범위 내의 수치를 나타내었으며, 병리조직학적 검사 역시 간 및 신장 모두 염증, 괴사 등의 유의할 만한 병적 변화 없는 정상적인 구조를 유지하고 있었다. 따라서 30 kGy로 감마선 조사된 타락죽을 암수 마우스에 3개월간 섭취시켜도 본 시험조건에서는 독성이 없는 것으로 나타났다. This study was conducted to evaluate the possible subacute toxicity of gamma-irradiated Tarakjuk. Tarakjuk was irradiated at a dose of 30 kGy at room temperature. For the animal study, AIN-93G as a control diet and 30 kGy irradiated and non-irradiated Tarakjuk diets were administered to male and female ICR mice (10 mice per group) for 3 months. During the experimental period, the group fed 30 kGy irradiated Tarakjuk did not show any changes in appearance, behavior, mortality, body weight, organ weight, or food consumption compared to control. Further, all biochemical parameters were in normal ranges. In the histopathological examination of liver and kidney tissues of ICR mice, there were no significant differences between the control and 30 kGy irradiated Tarakjuk groups. These results indicate that Tarakjuk irradiated at 30 kGy did not cause any toxic effects under these experimental conditions.