机构地区: 华南理工大学轻工与食品学院
出 处: 《食品与发酵工业》 2005年第11期95-97,共3页
摘 要: 采用反相高效液相色谱法(RP-HPLC)分离测定了蛋白核小球藻中的叶黄素。样品制备采用甲醇-二氯甲烷(体积比为2:1)混合溶剂为叶黄素提取剂,所用色谱柱为Nova-Pak^(?)C_(18)不锈钢柱,以甲醇-乙腈-水(体积比为80:10:10)和甲醇-乙腈(体积比为40:60)为流动相,线性梯度洗脱,流速0.8mL/min,在447nm下用光电二极管阵列检测器(DAD)检测。测定结果显示,在0~60mg/L范围内,标准曲线呈良好的线性关系(r=0.9999),叶黄素的保留时间为11.25min,浓度的相对标准偏差为0.49%(n=6),平均加样回收率为99.7%。该法简单、快速、准确。 A reversed-phase high performance liquid chromatography method for the separation and determination of lutein in Chlorella pyrenoidosa was established. Lutein in Chlorella pyrenoidosa cells was extracted by mixed solvents of methanol-dichloromethane (2:1 ,v/v). The HPLC method was performed on a Nova-Pak C18 stainless steel column (4.6 mmi. d. × 150mm,5μm) at 25℃ by employing methanol-acetonitrile-water (80:10: 10,v/v/v) and methanol-acetonitrile (40:60,v/v) as the mobile phase,applying gradient elution at a flow rate of 0.8 mL/min. Lutein was detected by a diode array detector (DAD) at 447 nm. The relative standard deviation of the results was 0.49 % (n = 6), and the average recovery was 99.73 %. The calibration curve for lutein gave good linearity over a wide range of 0-60 mg/L (r = 0.999 9), and the retention time was 11.25 min. The result showed that this method is simple, rapid and accurate.