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RP-HPLC梯度洗脱法测定桑叶中芦丁和绿原酸的含量 被引量:3

Determination of Rutin and Chlorogenic Acid in Mulberry Leaf by RP-HPLC with Gradient Elution
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摘要 建立了同时测定桑叶中芦丁和绿原酸含量的方法,采用Kromasil C18柱(4.6mm×250mm,5μm),以甲醇-0.5%磷酸的水溶液为流动相,梯度洗脱程序为0min[V(甲醇)+V(O.5%磷酸)=30+70]-15min [V(甲醇)+V(O.5%磷酸)=30+70]-20min[V]v(甲醇)+V(0.5%磷酸)-50+50]-35min[V(甲醇)+V(0.5%磷酸-50+50];流量0.8mL·min^-1;检测波长350nm;柱温25℃;光电二极管阵列检测器(PAD)。结果表明,芦丁线性范围为0.218~1.962μg,r=0.9993,样品的平均加样回收率为101.3%,RSD1.1%;绿原酸线性范围为0.654~5.886μg,r=0.9997,样品的平均加样回收率为98.2%,RSD1.1%;绿原酸线性范围为0.654~5.886μg,r=0.9997,样品的平均加样回收率为98.2%,RSD1.5%。该法快速简便,专属性强,重复性好,可作为桑叶中芦丁的定量分析方法。 A method for simultaneous determination of rutin and chlorogenic acid in malberry leaf was established. A Kromasil C18 (4.6 mm×250 mm, 5 μm) column was used with a mobile phase consisted of phase A (methanol) - phase B (0.5 % phosphoric acid water solution) in gradient elution 0 min [V (methanol) + V (0.5% phosphoricacid) (30 + 70) - 15 min V (methanol) + V (0.5% phosphoricaid) (30 + 70) - 20min V (methanol) + V (0.5% phosphoricacid)(50+50) -35 min V(methanol) +V(0.5%phosphoricacid)(50+50) by flow rate of 0.8 mL · min^-1 in this method, the detection wavelength was set at 350 nm and the column temperature was 25℃. Photodiode array detector was used. The calibration curve was linear at a range o and RSD was 1.1 218~1. 962 μg for rutin (r=0. 999 3). The average recovery was 101.3 % (n=6). The calibration curve was linear at a range of 0. 654~5. 886μg for chlorogenic acid (r=0. 999 7). The average recovery was 98.2% and RSD was 1.5% (n=6). The methoc is rapid, simple and reproducible. It can be used as a quality control method for rutin and chlorogenic acid in mulberry leaf.
出处 《广东微量元素科学》 CAS 2007年第5期57-60,共4页 Trace Elements Science
关键词 桑叶 高效液相色谱 光电二极管阵列检测器 梯度洗脱 绿原酸 芦丁 Morusalba L HPLC PAD gradient elution chlorogenic acid rutin
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