目的测定食物中叶黄素(Lut)、隐黄素(Cryp)、α-胡萝卜素(a-C)、β-胡萝卜素(β-C)和番茄红素(Lyco)的水平。方法采用高效液相色谱法(HPLC)。HPLC色谱柱:Develosil C30柱;流动相:A(甲醇:叔丁基甲基醚:水=83:15:2),B(甲醇:叔丁基甲基醚:水:8:90:2),梯度洗脱;检测器:紫外-可见光检测器;检测波长:450nm。结果Lut在0、013~0.508,ug/ml范围内与峰面积的线性相关,R。=0、999,加标回收率为105.9%,RSD=4、62%;Cryp在0.015~0、605μg/m1范围内与峰面积的线性相关,R^2=1.000,加标回收率为94.7%,RSD=3.50%;n—C在0.011~0.432μg/ml范围内与峰面积的线性相关,R^2=1.000,加标回收率为95.8%,RSD:3.83%;、β-C在0、013~0、518μg/ml范围内与峰面积的线性相关,R^2=1.000,加标回收率为108.1%,RSD=2、97%;Lyco在0.012~0.498μg/ml范围内与峰面积的线性相关,R^2:1、000,加标回收率为104.5%,RSD:4.24%。结论该方法同时测定了蔬菜中的Lut、Cryp、α—C、β-C和Lyco5种类胡萝卜素组分,方法简便、快速、准确。
Objective To detect a-carotene (α-C), β-carotene (β-C), cryptoxanthin (Cryp), lutein (Lut) and lycopene (Lyco) levels in vegetables. Methods A HPLC method with C30 column was used to detect several carotenoids at the wave length of 450nm. A gradient elution method with methanol, methyl-t-butyl-ether and ammonium acetate solution was used to separate the carotenoids. Results The level of Lut, Cryp, α-c, β-c and lycopene were linearly related with the peak area. The recoveries of the standard were between 94.7%-108.1%. The relative standard deviations were less than 4.62% .Conclusion The method could be simple and credible. It could separate 5 carotenoids in vegetables simultaneously.