Paclitaxel 정제를 위한 메조기공 알루미나 흡착제 평가
Evaluation of Mesoporous Alumina Adsorbent for the Purification of Paclitaxel
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초록
바이오매스 유래 항암물질 paclitaxel 정제를 위하여, 물리적 특성이 다른 메조기공 알루미나 흡착제를 제조하여 흡착제 처리 효과를 조사하였다. 알루미나의 물리적 특성 중 표면적과 기공부피 보다는 기공크기(기공지름)이 흡착제 처리 효과에 많은 영향을 미쳤다. 특히 적절한 기공크기(기공지름: 10.8 nm)에서 식물유래 타르 및 왁스 성분을 포함한 불순물을 제거하는데 가장 효과적이었다. 일정한 기공크기에서 흡착제의 표면적은 paclitaxel 순도뿐만 아니라 수율에 많은 영향을 미치며 흡착제의 표면적이 증가할수록 paclitaxel과 불순물(바이오매스 유래 타르 및 왁스 성분 포함)의 흡착 정도는 증가하였다. 이러한 불순물 제거 효과는 흡착제 처리 후 흡착제를 메탄올로 세척하여 HPLC로 분석한 결과와 흡착제에 붙은 유기물의 TGA 정량 분석 결과로도 확인할 수 있었다.
Abstract
Several types of mesoporous alumina adsorbents with different physical properties were prepared by spray pyrolysis and were used for the separation/purification of the anticancer agent paclitaxel. The pore diameter of the adsorbents had a greater effect than did the surface area and the pore volume on the removal of plant-derived impurities. An appropriate pore diameter (~10.8 nm) was required for effective impurity removal. At a constant pore diameter, the surface area of the adsorbent affected not only the purity but also the yield of paclitaxel. Also, increasing the surface area of the adsorbent resulted in an increase in the adsorption of paclitaxel and impurities (biomass-derived tar and wax components). Removal of these impurities was confirmed by HPLC analysis of the absorbent after the treatment and TGA of the organic substances that were bound to the adsorbent.
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