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조종수,권중근,조병욱,이강춘,성용길,Cho, Chong-Su,Kwon, Joong-Kuen,Jo, Byung-Wook,Lee, Kang-Choon,Sung, Yong-Kiel 한국약제학회 1992 Journal of Pharmaceutical Investigation Vol.22 No.4
$Poly({\varepsilon}-carbobenzoxy\;L-lysine)/poly(ethylene oxide)/poly({\varepsilon}-carbobenzoxy\;L-lysine)$ (LEL) block copolymers containing $poly({\varepsilon}-carbobenzoxy\;L-lysine)$ (PCLL) as the A component and poly(ethylene oxide) (PEO) as the B component were investigated as drug delivery matrix. PCLL homopolymer and LEL block copolymer microspheres containing anticancer drug, cytarabine, were prepared by a solvent evaporation process and the release patterns of cytarabine from the microspheres were investigated in vitro. The size of PCLL homopolymer and LEL block copolymer microspheres was ranged from $0.2\;{\mu}m$ to $1\;{\mu}m$ in diameter and the shape of the microspheres was almost round. The release pattern of cytarabine from the block copolymer microspheres was dependent on the mole % of PEO of the block copolymers.
김영훈,조종수,성용길,정병호,이강춘,Kim, Young-Hoon,Cho, Chong-Su,Sung, Young-Kiel,Chung, Byung-Ho,Lee, Kang-Choon 한국약제학회 1992 Journal of Pharmaceutical Investigation Vol.22 No.3
A series of biodegradable block copolymers consisting of $poly({\gamma}-benzyl\;L-glutamate)$ (PBLG) and poly(ethylene oxide) (PEO)-lactoselactone were prepared by polymerization of PEO-lactoselactone and ${\gamma}-benzyl$ L-glutamate-N-carboxyanhydride and characterized by IR and NMR. From circular dichroism measurements, it was found that the polymers exist in the ${\alpha}-helical$ conformation. Block copolymer microspheres were prepared by solvent-extraction-precipitation method for their primary evaluation for medical and biological applications.
새로운 생체적합성 폴리펩티드공중합체의 합성과 혈액적합성에 관한 연구 : 측쇄에 에틸렌글리콜을 함유하는 폴리펩티드 공중합체의 혈액적합성
강인규,박상동,조종수,성용길,Inn-Kyu Kang,Sang Dong Park,Chong Su Cho,Yong Kiel Sung 대한화학회 1992 대한화학회지 Vol.36 No.6
Poly (γ-benzyl L-glutamate) (PBLG)와 말단에 아미노기를 갖는 Polyethylene glycol (PEG)의 치환반응을 행하여 PEG-grafted PBLG (PEG-g-PBLG)를 합성하였다. 또한 PEG-g-PBLG 필름표면에 ethanolamine(EA)을 치환반응하여 표면에 히드록시그룹을 갖는 PEG-g-PBLG-EA 필름을 얻었다. 폴리펩티드중합체와 혈액성분과의 상호작용에 관한 실험결과, PEG-g-PBLG 상에서의 혈소판의 점착율 및 형태변화는 PEG-g-PBLG-EA보다 적게 나타났고, PEG-g-PBLG상에서의 혈장 단백질의 응고시간은 PEG-g-PBLG-EA 또는 PBLG의 응고시간보다 길게 나타났다. 이들 결과는 혈액응고시간 및 혈액응고량을 조사한 실험결과와 일치하였다. 따라서 폴리펩티드상의 히드록시그룹은 혈액성분과의 상호작용을 강하게 하여 혈액적합성이 저하하는 반면, PEG-g-PBLG는 비교적 좋은 혈액적합성을 나타냄을 알 수 있었다. Polyethylene glycol (PEG) grafted poly (γ-benzyl L-glutamate) (PBLG) was synthesized by the substitution reaction of PBLG and PEG having primary amino groups at both ends. PEG-g-PBLG films containing hydroxyl group were also prepared by the substitution reaction of PEG-g-PBLG film and ethanolamine (EA). Adhesion of platelets and activation of plasma proteins on the copolypeptide films were studied. The results showed that platelets are less adhered and activated on the PEG-g-PBLG than on other polypeptides and plasma recalcification time (PRT) on the PEG-g-PBLG was longer than that on other polypeptides. These results were consistent with those of blood clotting time and thrombus formation on the polypeptides. As a results, PEG-g-PBLG surfaces showed better blood compatibility than PBLG or PEG-g-PBLG-EA surfaces.
감(Diospyros kaki, Thumb)잎차의 화학 성분
정선영(Seon-Young Joung),이수정(Soo-Jung Lee),성낙주(Nak-Ju Sung),조종수(Jong-Soo Jo),강신권(Shin-Kwon Kang) 한국식품영양과학회 1995 한국식품영양과학회지 Vol.24 No.5
녹차와 더불어 시판되고 있는 감잎차의 제조방법을 기존 제차공정과 달리할 경우 차의 성분에 어떤 영향을 미치며 또 이들 성분과 품질과의 상관관계를 밝히는 기초자료를 얻기 위하여 감잎차의 제조 방법을 달리하여 카페인, 탄닌, 비타민 C, 핵산관련 물질, 유리당 및 구성아미노산을 분석 비교하였다. 차엽의 수분은 6.9~7.0%, 회분은 8.3~9.0%, 조지방은 6.1~6.9%였다, 전질소의 함량은 3.4~4.8%, 차엽의 카페인 함량은 178.4~209.8μ㏖/g, 탄닌 함량은 29.1~38.5㎎%, 비타민 C는 325.3~2084.7㎎%로서 RHT가 2084.7㎎%로 그 함량이 월등히 높았다. 찻물의 경우 카페인의 함량이 101.5~130.1μ㏖/g, 탄닌의 함량이 15.4~25.9㎎%였으며, 비타민 C는 111.0~1274.3㎎%로 차엽과 마찬가지로 RHT에서 1274.3㎎%으로 다른 차에 비해 아주 높은 함량을 보였으며, 찻물의 용출율은 61.1%였다. 차엽의 구성 아미노산은 glutamic acid, aspartic acid, leucine 및 phenylalanine순으로 그 함량이 높았고, 이들 4종의 아미노산이 총 아미노산에 대하여 SHT는 39.8%, DHT는 38.8%, RHT는 39.1%였으며, 이중에서도 특히 함량이 높은 것은 glutamic acid(10.9~12.9㎎%)였다. 찻물의 구성아미노산의 함량은 차엽과 마찬가지로 glutamic acid가 가장 높았고, 다음이 proline, histidine 및 arginine 순이었다. 핵산관련 물질(CMP, IMP, AMP, UMP, GMP, hypoxanthine)의 함량은 생엽 119.2μ㏖/g/100g, 차엽 및 찻물 모두에서 CMP의 함량이 많았다. 차엽 중에서 CMP 다음으로 함량이 높은 것을 보면 SHT에서는 GMP, DHT는 AMP, RHT는 UMP였으며, 찻물의 경우도 역시 차엽과 비슷한 경향을 보였다. 유리당의 함량은 생엽의 경우 sucrose의 함량이 85.2μ㏖/g/100g으로 가장 높았고, SHT, DHT 및 RHT에서 모두 fructose의 함량이 높았으며, 찻물 역시 차엽과 마찬가지로 sucrose의 함량이 높게 나타났다. Chemical components relevant to the characteristic taste of the Korean native persimmon(Diospyros kaki, Thumb) leaf tea were analyzed. Samples were processed by using three different methods ; SHT(steamed and then hot-air dried), DHT(dried in the shade, steamed and then hot-air dried) and RHT(roasted and then hot-air dried). The components analyzed were general compositions of dried perisimmon leaves and extracted solution. The composition of moisture, ash, crude lipid and total nitrogen did not show significant variation among different processing methods of the persimmon leaf tea. The contents of caffeine, tannin and vitamin C in persimmon leaf tea were in the range of 178.4~209.8μ㏖/g, 29.1~38.5㎎% and 325.3~2084.7㎎%, respectively. The vitamin C content was significantly higher in the RHT than other treatments. The contents of caffeine, tannin and vitamin C in the tea extracted solution were in the range of 101.5~130.1μ㏖/g, 15.4~25.9㎎% and 111.0~1274.3㎎%, respectively. The vitamin C in the tea solution was the highest in the RHT treatment and 61.1% of vitamin C in the leaf tea was extracted out in these processing methods. The major amino acids contained in the leaf tea were in decreasing order glutamic acid, aspartic acid, leucine and phenylalanine, these four amino acids consisting 38.9~39.8% of the total amino acid contained in the persimmon leaf tea. The major amino acids contained in the tea solution were glutamic acid, proline, histidine and arginine. Six kinds of 5'-nucleotides, CMP, AMP, UMP, IMP, GMP and hypoxanthine were detected and CMP was the most abundant component in fresh leaf, leaf tea and tea solution. The second highest 5'-nucleotides in both leaf tea and tea solutions were GMP, AMP and UMP in all processing method. The highest free sugar contained in the fresh leaf tea and tea solution was sucrose.