高效液相色谱法测定婴儿奶粉中维生素B_(12)
China Brewing(2013)
Abstract
建立了奶粉中维生素B12的反相高效液相色谱的测定方法,奶粉经去蛋白质-糖分-超声提取-富集浓缩超滤后进高效液相色谱仪,采用C18色谱柱,水-乙腈流动相体系,梯度洗脱能够快速有效地分离奶粉中的维生素B12。线性范围为0.010μg/mL~10μg/mL,相关系数为0.9998,检出限为0.1μg/100g,加标回收率为78.8%~84.0%。该方法适用于实际样品的测定,速度快、成本低,结果令人满意。
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Key words
vitamin B12,high performance liquid chromatography,infant formula powder milk
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