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김현숙 ( Hyeon-suk Kim ),고경숙 ( Kyoung-sook Ko ) 한국미용학회 2021 한국미용학회지 Vol.27 No.3
In this study, ingredients were analyzed to see if ginseng flower extracts help suppress skin aging, and physiological activities were tested to evaluate antioxidant effects, cytotoxicity, anti-inflammatory effects, and cell regeneration effects. The GC/MS component analysis showed that the highest content was sucrose (18.72%) which is a polysaccharide used as a moisturizer, followed by Decanoic acid and 2- ethyl hexyl ester (10.01%), and the phenolic compound 2-Methoxy-4-vinyl phenol (3.69%). Antioxidant (DPPH) measurements also confirmed that when the control Vit.C shows 97% dissipation, ginseng flower extract increases in concentration from 0.25 mg/mL to 39.15±1.25%, 0.5 mg/mL to 49.44±0.99%, and 1 mg/mL to 71.91±5.67%. The cytotoxicity assessment showed that ginseng flower extracts were safe and not toxic material with a survival rate of 89.1±79.76% at 0.25 mg/mL, 86.8±84.08% at 0.5 mg/mL, and 85.48±79.56% at 1 mg/mL. In addition, ginseng flower extracts were found to have an anti-inflammatory effect as they concentratedependent inhibition of NO production at 24.41±6.30 μM at 0.25 mg/mL, 23.95±9.69 μM at 0.5 mg/mL, and 14.37±10.34 μM at 1 mg/ mL. According to the results of observing the cell migration rate by concentration (0.25%, 0.5%, 1%) of ginseng flower extracts with an Inverted microscope, the empty space of the scratch narrows as the concentration of the extract increases, and the cell proliferates actively, which shows that ginseng flower extracts promote skin regeneration. Through this experiment, ginseng flower extracts are safe without toxicity and have antioxidant activity, anti-inflammatory effect, and cell regeneration effectiveness of the skin, which has inhibitory skin aging. As a result, ginseng flower extracts will be used as natural cosmetics to help prevent skin aging, although more clinical experiments will be needed in the future, and research on various application methods will continue.
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金春姬,高京淑,安喆偶 한국환경과학회 2000 한국환경과학회지 Vol.9 No.2
The purpose of this study was to determine whether Vermi Cast could be used effectively to remove SO_2 from flue gas, and then to investigate optimum adsorption conditions. The Vermi Cast used as adsorbent was mechanically screened with 8∼20 mesh sieve. The adsorption data for S0_2 were regressed using the Freundlich isotherm. The fit was generally satisfactory (R^2=0.945∼0.982). With the temperature changes from 20℃ to 40℃, the constant k in Freundlich isotherm q_e = kC_e^(1/n), decreased from 1.409 at 20℃ to 0.297 at 40℃, and the exponent 1/n were decreased from 0.343 to 0.134. With the bed depth changes from 10㎝ to 30㎝, the adsorption capacity expressed as m㏖ of SO_2 adsorbed per g of Vermi Cast increased from 0.247 to 0.381. Moisture content is an important parameter in the SO_2 adsorption efficiency. When the moisture content ranging 23∼53% temperature 28℃ the amount of SO_2 adsorbed were observed over 0.3m㏖ SO_2/g Vermi Cast. The best adsorption capacity was 0.487m㏖ SO_2/g Vermi Cast, and it was obtained with moisture content 37%, temperature 20℃. From the above results, it might be concluded that Vermi Cast is effectively available as a good adsorbent to remove SO_2 from flue gas.
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반건식-백필터에 의한 소각배가스 중의 HCI, SOx 제거 (Ⅰ)
배병훈,신남철,고경숙,김춘희,문종익,임경택 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1
This study has been carried out to investigate the removal efficiencies of HCl/SOx in a Spray-Dryer/Fabric-Filter system. In HCl/SOx removal, we could identify the key factors such as spray dryer outlet temperature, molar equivalence ratio(MER) and fabric filter velocity, but we couldn't find out the correlation of HCl and SOx. The removals of HCl/SOx were inversely proportional to spray dryer outlet temperature(l30~170℃) and filter velocity(l.0~1.5 m/min), at the MER, HCl removal efficiency was strongly proportional to MER, but SOx, removal efficiency was not particularly increased by MER over 1.5. The removal efficiencies of HCl/SOx were improved over 10% at the fabric filter. In this Spray-Dryer/Fabric-Filter system, HCl/SOx removal efficiencies were about 99%, 96% respectively.
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