Infrared and Raman spectroscopic methods for characterization of Taxus baccata L.--Improved taxane isolation by accelerated quality control and process surveillance.

Infrared and Raman spectroscopic methods for characterization of Taxus baccata L.--Improved taxane isolation by accelerated quality control and process surveillance.
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用于表征红豆杉的红外和拉曼光谱方法——通过加速质量控制和过程监控改进紫杉烷分离

DOI:
10.1016/j.talanta.2015.04.090
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发表时间:
--
期刊:
影响因子:
6.1
通讯作者:
Schulz H.
Schulz H.
中科院分区:
化学1区
文献类型:
--
作者:
Gudi G;Krähmer A;Koudous J;Strube J;Schulz H.

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不同种类的红豆杉含有有毒的紫杉烷生物碱,可作为半合成抗癌药物的资源。紫杉烷类化合物的含量变化很大,这就需要新的方法来快速鉴定植物原料和在植物提取过程中分离目标结构。为此目的,不同的振动光谱方法在原料植物材料的收货和过程控制中的适用性进行了研究,并在溶剂提取过程中的目标紫杉烷10-脱乙酰巴卡亭III(10-DAB)的在线跟踪分离和纯化中进行了证明。应用近(NIRS)和中红外光谱(IRS)的植物杂质的量在两个不同的红豆杉物种的混合样品(R2 ¼0。993),红豆杉材料的叶木比(R2 1/4 0. 94)和干燥紫杉针叶中的水分(R2 1/4 0. 997)可以量化。通过偏最小二乘分析(PCA),利用衰减全反射-傅里叶变换红外光谱(ATR-FT-IR)成功区分了松柏目不同物种的针叶。ATR-FT-IR和傅立叶变换-拉曼光谱(FT-RS)在紫杉烷类化合物提取和纯化过程控制中的分析潜力被证明用于测定紫杉醇提取物中的水含量(R2 ¼0. 999)以及用于定量10-DAB(R2 1/4 0. 98)在一个高度复杂的水平。在提取过程中的植物组织中的10-DAB的减少,成功地可视化的FT-IR成像薄横截面提供了新的视角,为过程控制和设计。
Different yew species contain poisonous taxane alkaloids which serve as resources for semi-synthesis of anticancer drugs. The highly variable amounts of taxanes demand new methods for fast characterization of the raw plant material and the isolation of the target structures during phyto extraction. For that purpose, applicability of different vibrational spectroscopy methods in goods receipt of raw plant material and in process control was investigated and demonstrated in online tracking isolation and purification of the target taxane 10-deacetylbaccatin III (10-DAB) during solvent extraction. Applying near (NIRS) and mid infrared spectroscopy (IRS) the amount of botanical impurities in mixed samples of two different yew species (R2 ¼0. 993), the leave-to-wood ratio for Taxus baccata material (R2 ¼0. 94) and moisture in dried yew needles (R2 ¼0. 997) can be quantified. By partial least square analysis (PCA) needles of different Coniferales species were successfully discriminated by Attenuated Total Reflectance-Fourier-Transform Infrared Spectroscopy (ATR-FT-IR). The analytical potential of ATR-FT-IR and Fourier Transform-Raman Spectroscopy (FT-RS) in process control of extraction and purification of taxanes is demonstrated for determination of the water content in methanolic yew extracts (R2 ¼0. 999) and for quantification of 10-DAB (R2 ¼0. 98) on a highly sophisticated level. The decrease of 10-DAB in the plant tissue during extraction was successfully visualized by FT-IR imaging of thin cross sections providing new perspectives for process control and design.
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