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정유진;손여림;황연숙 한양대학교 2009 韓國 生活 科學 硏究 Vol.29 No.1
The purpose of this study is to analyze, especially from a safety aspect, the interior characteristics of lobbies in the rehabilitation hospitals. Four rehabilitation hospitals in Gyunggi province were examined. The design features of lobbies were analyzed. The analyses were through on-the-spot surveys in the perspective of the safety features. The results of the study are as follows: The colors applied are relatively varied and in warmer tones but the finishing materials are relatively monotonous. Better finishing materials can give more intimate feelings to the users. Non-threshold entrances and slope ways are planned safely but lack in nonslip floor finish. The directional signs meet safety requirements in general but the visibility of sign needs to be improved.
전분의 첨가가 자몽 종자 추출물 DF-100의 항균 활성에 미치는 영향
이유진,김지훈,김영식,정영재,김경범,정종문 수원대학교 기능성생명소재연구소 2003 자연과학연구논문집 Vol.2 No.1
Recent testimonials report grapefruit seed extract DF-100 to be successful in combating a variety of common infectious agents. This study investigated DF-100 for antimicrobial activites at containing 3% corn starch, 3% wheat flour and 0.5~5% starch contents to determine if antimicrobial activity of DF-100 keeps almost constant or is sometimes decreased by the addition of various types of starch. In our study, grapefruit seed extract DF-100 was tested for antibacterial properties against 5 strains. Gram-negative and gram-positive isolates {Escherichia coli, Bacillus cereus, Staphylococcus aureus, Candida albians, and Yeast (be often contaminated strain in confectionery factory)} were introduced into various dilutions of DF-100 (0, 250, 500, 1,000, 2,000, 4,000, 8,000, 16,000 ppm) for determination of antimicrobial activity. The antibacterial effect of the DF-100 appears to suppress the. growth of the 5 strains used for experiment. However, antimicrobial activity of DF-100 was reduced 1/4 to 1/16 when added into foods (such as bread, noodle, and biscuits) containing corn starch, wheat flour, or potato starch. It was evident that the antimicrobial activity DF-100 was decreased by addition of starch.
천연식품 추출 혼합물인 디콜을 이용한 마우스와 랫드에서의 LDL-콜레스테롤, 중성지질 및 체중 감소효과
김지훈,김경범,이유진,정종문 수원대학교 기능성생명소재연구소 2004 자연과학연구논문집 Vol.3 No.1
This study was performed to investigate the effects of natural source extracts, Dechol. The effects of Dechol were investigated an the blood LDL-cholesterol, triglyceride, and body weights in the Sprague Dawley rats, transgenic mice (B6, 129-Ldlr^(tm1Her)), and ICH mice. Hyperlipidemia was induced in SD rats and ICR mice by feeding them with high-fat food. Transgenic mice were tested by feeding them with normal food. All animal experiments were divided into 2 groups. One group was treated in drinking 0.5% Dechol whereas the other group was fed with tap water. Dechol-treated SD rat group could be returned to normal blood LDL-cholesterol level almost in 9 days. ICR mice determination of LDL-cholesterol level showed that the difference after 4 weeks between two groups was 43 mg/dl. Transgenic mice indicated that the blood cholesterol concentration in the subject group was decreasing everyday whereas the one in the control group was increasing, resulting in the difference of 280 mg/dl between two groups just after 20 day-treatment. These results suggest that Dechol may be efficiently used for primary prevention of cardiovascular diseases.
Overexpression of Recombinant Human H-chain Ferritin in Pichia pasotris
Lee, Eu-Gene,Kim, Ji-Hoon,Kim, Kyung-Bum,Jeong, Jong-Moon 수원대학교 기능성생명소재연구소 2004 자연과학연구논문집 Vol.3 No.1
본 연구에서는 인간 ferritin의 H-chain만을 가진 철 저장 단백질인 재조합 ferritin을 soluble form으로 발현하기 위해 Pichia pastoris에 유전적으로 형질전환시켰다. 발현벡터로 사용된 pGAPZaA는 glyceraldehydes- 3-phosphate dehydrogenase promoter (GAP)의 조절 하에 효모에서 단백질을 연속적으로 발현하도록 하는 벡터이다. 효모에서 발현된 인간 H-chain ferritin은 당질화된 형태로 배양 4일째부터 발현되기 시작하여 6일째 300 mg/liter 정도로 대량 발현되어 배지로 분비되었다. 또한 발현된 H-chain ferritin은 철 결합 능력이 있음을 보여주므로 각각의 subunit이 제대로 조합되어 그 기능을 발휘함을 보여주었다. 발현된 H-chain ferritin의 발현 정도와 철 저장 능력이 있음을 SDS-PAGE와 Prussian blue staining을 통해 native ferritin과 동일하게 각각의 subunit들이 조합되어 철을 저장할 수 있음을 증명하였다.
간기능 개선용 복합 식물 추출물(Hepa-1000)의 tert-butyl hydroperoxide(t-BHP)로 유도한 간세포 독성에 대한 보호 효과
이유진(Eu-Gene Lee),김경범(Kyung-Bum Kim),정종문(Jong-Moon Jeong) 한국식품영양과학회 2006 한국식품영양과학회지 Vol.35 No.9
본 연구에서는 간기능 개선제(Hepa-1000)의 t-BHP에 의해 유도된 산화적 스트레스에 대한 간세포 보호 효과를 확인하기 위해 인간 간암 세포주인 HepG2 세포를 이용한 세포실험으로 검증하였다. 간세포에 t-BHP로 유도되는 간세포의 산화적 손상에 대한 보호 효과를 측정한 결과, Hepa-1000을 처리시 대조군에 비해 유의적인 세포 생존율 증가치를 보이므로 간기능 개선제(Hepa-1000)가 t-BHP에 의한 간세포의 괴사에 대해 강한 보호 효과가 있음을 알 수 있었다. 또한 간기능 개선 효능을 확인하기 위해 세포 배양액 내의 GOT와 LDH의 활성도를 측정 시 t-BHP에 의해 간세포 손상이 확연하게 유발되었으며, 간기능 개선제(Hepa-1000)는 GOT와 LDH의 증가를 유의적으로 뚜렷하게 억제하였다. Hepa-1000의 t-BHP에 의해 유도된 산화적 스트레스에 대한 보호 효과를 세포막 손상 시 배양액 내의 세포 지질과산화 정도를 측정하는 MDA양을 측정하였을 때, Hepa-1000을 처리시 MDA의 양이 감소함을 관찰할 수 있었다. 이러한 결과들을 종합해 볼 때 간기능 개선제인 Hepa-1000은 간세포에서 t-BHP의 대사과정시 발생되는 free radical에 의한 세포내 지질과산화 현상을 방어하여, 세포막 손상 시 배양액으로 유출되는 GOT, LDH의 양을 감소시키므로 산화적 스트레스에 의한 간세포의 손상을 보호함으로써 인체에서 해독작용을 담당하는 조직인 간의 기능을 개선시키고 보호하는 효과를 나타내리라 사료된다. In the present study, the potential hepatoprotective effects of poly herbal formulation, Hepa-1000, against oxidative damages induced by t-BHP were evaluated in HepG2 cells in order to relate in vitro antioxidant activity with cytoprotective effects. The t-BHP induced considerable cell damage in HepG2 cells was shown by significant glutamic oxaloacetic transaminase (GOT) and lactate dehydrogenase (LDH) leakage, and increased lipid peroxidation. Hepa-1000-treated cells showed an increased resistance to oxidative challenge, as revealed by higher survival capacity than the one of control cells against t-BHP induced oxidative stress and hepatotoxicity. In addition, the Hepa-1000 had hepatoprotective effects lowering the activity of GOT and LDH, simultaneously. That is, it could inhibit the cell membrane damages resulting in the increased activities of GOT and LDH in the cell culture media. Furthermore, the Hepa-1000 could reduce t-BHP-enhanced lipid peroxidation, which was evaluated by measuring the production of malonedialdehyde. Based on the data described above, it could be suggested that the Hepa-1000 has significant hepatoprotective effects and plays a protective role against lipid peroxidation by free radicals.
요제프 호프만의 건축에서 나타나는 '비형상적' 장식의 시각적 효과와 그 의미에 관한 연구
이유진,정진국 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1
After 1900, ornament in the architecture of Josef Hoffmann is appeared to form of contour line or geometrical pattern. But this ornament is 'non-figural' and different from the ornament of Vienna Art-Nouveau. The purpose of this study is to find the meaning of the 'non-figural' ornament that Hoffmann used in his architecture, through the visual effects of it. Hoffmann prescribes the wall as a distinctive unit by ornament. And the wall is seemed to be planar. This is related to visual environment that was newly appeared at that time. And this is a try to find new forms corresponding to his time.