高效液相色谱法测定玫瑰花中9种黄酮
HPLC Determination of 9 Flavones in Rose
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摘要: 提出了高效液相色谱法测定玫瑰花中9种黄酮含量的方法。玫瑰花样品经甲醇-水(8+2)混合液高速匀浆提取,分取提取液5.0 mL,经MCI-GEL反相树脂固相萃取小柱净化,取净化液2. 00mL供色谱分析。用Waters Exterra色谱柱为分离柱,用甲醇和乙酸(0.5+99.5)溶液以不同比例混合的混合液为流动相进行梯度洗脱,在检测波长358 nm处进行测定。9种黄酮在一定的质量浓度范围内与其峰面积呈线性关系,方法的检出限(3S/N)在35~45 μg·L-1之间。加标回收率在96.3%~106%之间,测定值的相对标准偏差(n=7)在1.8%~2.8%之间。Abstract: A method of HPLC for the determination of 9 flavones in rose was proposed. The sample was extracted with mixture of methanol-H2O (8+2) by speedy and homogeneous pulping. An aliquot of 5.0 mL of the extract was purified by passing through MCI-GEL RP-resin SPE column. Waters Exterra chromatographic column was used as stationary phase with mixtures of methanol and acetic acid (0.5+99.5) solution with different mixing ratios were used as mobile phase in the gradient elution. UV-detection at 358 nm was adopted in the determination. Linear relationships between values of peak area and mass concentration of the 9 flavones were kept in definite ranges. Detection limits (3S/N) found were ranged from 35 to 45 μg·L-1. Values of recovery found by standard addition method were in the range of 96.3%-106%, and values of RSD′s (n=7) in the range of 1.8%-2.8%.