摘要
目的:优化脑蛋白水解物原料肽含量测定方法。方法:采用Agilent Zorbax Eclipse—AAA色谱柱(4.6mmxl50mm,5gm),流动相A:0.04mol/L磷酸盐缓冲液(pH7.80),流动相B:乙腈-甲醇-水(45:45:10),流速1.5ml/min,柱温40℃,检测波长:338nm,262nm,梯度洗脱。结果:各种氨基酸的浓度在15.0—120.0gg/ml范围内与峰面积呈良好的线性关系(r〉0.999),各种氨基酸的平均回收率为98.1%~103.6%。结论:该方法快速、简便、专属性强、重复性好,结果准确可靠,适用于脑蛋白水解物原料肽含量的测定。
Objective: To optimize a method for the determination of peptide content in cerebroprotein hydrolysate. Methods: HPLC was performed on an Agilent Zorbax Eclipse-AAA column ( 4.6 mm× 150 mm, 5 μm ) with mobile phase A: 0.04 mol/L phosphate buffer (pH 7.8) and mobile phase B: acetonitrile-methanol-water (45 : 45 : 10) at UV detection wavelength of 338 nm and 262 nm, flow rate of 1.5 ml/min (gradient elution) and column temperature of 40 ℃. Results: The standard curve of every amino acid was linear over the range of 15.0-120.0 pg/ml (r 〉 0.999 ) with average recovery 98,1%-103.6%. Conclusion: This method is simple, accurate, sensitive and reproducible, and can be applied in the determination ofpeptide content in cerebroprotein hydrolysate.
出处
《上海医药》
CAS
2015年第13期74-79,共6页
Shanghai Medical & Pharmaceutical Journal