KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Optimization of Extraction Process for Mass Production of Paclitaxel from plant Cell Cultures

Paclitaxel 대량생산을 위한 추출공정 최적화

  • 김진현 ((주)삼양제넥스 생명공학연구소)
  • Published : 2000.08.01
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Abstract

Several solvents or combinations of solvents were tested for the extraction of wet or dried biomass at different extraction mode from plant cell cultures. Methanol gave the highest paclitaxel recovery with the least amount of solvent usage. before extraction drying of biomass wass helpful to decrease solvent usage in extraction step./ in this case drying method was very important to obtain high yield from dried biomass. In thid mode of operation counter-current extraction process can be able to decrease solvent usage but paclitaxel recovery was almost same with both batch and counter-current mode of operation. The number of extraction times was at least four to obtain high yield(>99%) from cell and one to obtain highyield(>96%) from cell debris in batch mode. Equilibrium (i.e. the ratio of paclitaxel in biomass to paclitaxel in the extraction solvent) was reached within 5 minutes. The minimum methodal concentration (90%) and solvent amount(biomass : solvent=1 Kg : 1L) are enough to obtain high yield(>98%) for extraction from biomass.

식물세포 배양액으로부터 회수한 식불세포 내 수분 함 량에 따른 추출효율은 건조 정도 보다는 건조방법 에 상당 히 영향을 받음을 알 수 있었으며 건조하여 추출할 경우 사용되는 추출용매를 절약할 수 있었다. 여러가지 유기용 매를 이용하여 paclitaxe1의 추출 경향을 조사한 결과 메탄올의 경우 가장 적 은 양으로 가장 높은 paclitaxe1 회 수율을 얻어 가장 효과적임을 알 수 있었다. 추출방법의 경우 counter-current 형태를 사용할 경우 batch형태에 비하여 용 매 사용량을 줄일 수 있으며 paclitaxe1 회수율은 거의 차이가 없음을 알 수 있었다. Batch 형태를 이용한 메탄올 추출시 식불세포의 경우 4회 (회수율>99%), 식불세포조각의 경우 1회 (회수융>96%)의 추출로 대부분의 paclitaxe1 회수가 가능 하였다. 또한 메탄올 추출시 90% 이상의 머탄올 농도이변 충분하며 (회수율>98%), 추출시biomass와 메탄올 의 흔합비 (Kg biomass: L MeOH)는 1: 1, 추출시간은 1회 5분 이상이면 적당 하였다. 메탄올 추출불에 포함된 극성불 순물들은 다음 공정 인 액/액 (methylene chloride/ MeOH)추 출로 제거하여 정제공정에 사용되어 진다.

Keywords

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