HPLC法同时测定鼠曲草不同部位中3种黄酮类成分含量
2018-09-18卢晓艺华丽萍李煌徐伟褚克丹叶向丽
卢晓艺 华丽萍 李煌 徐伟 褚克丹 叶向丽
【摘 要】 目的:建立同时测定鼠曲草不同部位3种黄酮类化合物(槲皮素、木犀草素、芹菜素)含量的高效液相色谱法。方法:采用Diamonsil-C18(4.6 mm×250 mm,5μm)色谱柱,流动相:甲醇-0.2%磷酸(50∶50),等度洗脱,流速:1 mL/min,检测波长:360 nm。结果:槲皮素、木犀草素、芹菜素的进样量分别在0.122~2.434、0.147~2.940、0.094~1.880 μg范围内与各自峰面积呈良好线性关系,r分别为0.999 4、0.999 7、0.999 6,方法的精密度、重复性均满足分析要求,方法的回收率均大于98%。结论:该方法简单、快速、高效,可用于鼠曲草不同部位中3种黄酮类化合物的含量测定。
【关键词】 鼠曲草;不同部位;槲皮素;木犀草素;芹菜素
【中图分类号】R284.1 【文献标志码】 A 【文章编号】1007-8517(2018)03-0036-04
Abstract:Objective To establish a high performance liquid chromatography (HPLC) method for simultaneous determination of three flavonoids (quercetin, luteolin, apigenin) in different parts of Gnaphalium affine D.Don. Methods Diamonsil - C18 (4.6 mm×250 mm, 5 μm) column was adopted. The mobile phase was methanol-0.2% phosphoric acid (50∶50) solution with the isocratic elution at the flow rate of 1.0 mL/min. The column temperature was 30 ℃ and the detection wavelength was 360 nm. Results There was a good linear relationship between content and peak area when the quercetin, luteolin and apigenin were within the range of 0.122 ~ 2.434(r= 0.9994), 0.147 ~ 2.940(r= 0.9997), 0.094 ~ 1.880μg(r= 0.9996).The performance characteristics of precision and reproducibility of the developed HPLC method fulfilled the analysis requirements.Conclution The method is simple, rapid and efficient, and applicable for determination of three flavonoids in different parts of Gnaphalium affine.
Keywords:Gnaphalium Affine; Different Parts; Quercetin; Luteolin;Apigenin
鼠曲草又名佛耳草、清明菜、白艾,系菊科鼠曲草屬植物Gnaphalium affine D.Don,全草入药,收载于1977年版《中华人民共和国药典》一部中[1]。多生于路旁、田边、山坡草地等处,我国黄河流域以南各省区均有分布,也见于墨西哥、阿根廷、危地马拉、玻利维亚等中南美洲国家。据报道,鼠曲草全草中含有5%黄酮苷[2],是鼠曲草主要的活性成分。黄酮类化合物药理活性丰富,具有抗菌抗氧化[3-7]、改善糖尿病血脂紊乱[8]、止咳祛痰[9]、保肝[10]、镇痛[11]、抗炎[12-14],改善气道炎症[15]和胶原诱导的关节炎症状[16]的作用,对高尿酸血症和痛风性关节炎[17]也有一定的治疗作用等,在南非国家用鼠曲草来治疗呼吸道和肠胃道疾病[18]。
本研究拟采用高效液相色谱技术,建立同时测定鼠曲草中槲皮素、木犀草素和芹菜素的检测方法,并将该方法应用于鼠曲草不同部位中3种黄酮类化合物的分析检测,为鼠曲草总黄酮和黄酮类化合物的开发利用提供参考。……
