高效液相色谱-蒸发光散射检测法测定藜芦中的介藜芦碱和藜芦胺

建立了高效液相色谱-蒸发光散射检测(HPLC-ELSD)测定藜芦中介藜芦碱、藜芦胺含量的方法,并对4种藜芦属药材样品进行了测定。采用的色谱柱为Kromasil C18柱(250 mm×4.6 mm, 5 μm),以乙腈和0.1%三氟乙酸水溶液为流动相进行梯度洗脱,洗脱程序为:0～5 min, 20%乙腈; 5～30 min, 20%乙腈～40%乙腈, 30～40 min, 40%乙腈～20%乙腈; 40～45 min, 20%乙腈;流速为0.8 mL/min;柱温为35 ℃;采用ELSD检测,漂移管温度为98 ℃,载气流速2.2 L/min 。介藜芦碱和藜芦胺的线性范围分别为42.05～980 mg/L和43.77～1020 mg/L;平均回收率分别为99.2%和101.4%,相对标准偏差分别为1.7%和2.1% (n=6);信噪比为3时,测得介藜芦碱和藜芦胺最低检测限分别为18.37 mg/kg和21.50 mg/kg。该方法快速简便、灵敏度和分离度好,适用于藜芦药材中活性生物碱的测定。     

Alkaloid accumulation dynamics in Veratrum lobelianum growing in Georgia and biological activity of Jervine

The alkaloid accumulation dymanics in Veratrum lobelianum were investigated. Jervine was found from 0.02 to 0.11% in the subterranean part at all vegetation stages. The jervine content was greatest in subterranean plant organs, reaching a maximum (0.3%) during natural dying off of aerial organs. Jervine, a natural analog of serotonin, can be used as a specific fibroblast growth factor. __________ Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 57–59, January–February, 2006.