摘要
[目的]鉴于婴幼儿食品的特殊性和重要性,对婴幼儿配方奶粉中的铁、锌元素含量进行测定。[方法]采用干法灰化法处理6种婴幼儿配方奶粉,探究适合奶粉灰化的温度,并且用火焰原子吸收光谱法测定奶粉中铁、锌元素的含量。[结果]试验表明,测定铁、锌元素含量时奶粉的灰化温度为450～500℃;同一厂家生产的同一品牌不同成长阶段的婴幼儿配方奶粉,铁含量存在一定的差异,锌含量存在显著性差异,同一厂家生产的不同品牌的婴儿(较大婴儿)配方奶粉,铁、锌含量均不存在显著性差异,不同品牌幼儿配方奶粉的铁、锌含量存在显著性差异;6种奶粉的铁、锌元素含量均符合国家标准GB/T5413.21-1997。[结论]科学全面地评价婴幼儿配方奶粉中铁和锌元素的含量,对评价奶粉的品质以及正确引导消费者消费具有积极的现实意义。
[Objective] To determine contents of Fe and Zn in infant formula milk power.[Method] Amounts of iron and zinc in 6 brands of infant milk powder were determined by flame atomic absorption spectrometry.The samples were treated by ashing and ashing temperature was determined.[Result] The results showed that ashing temperature of 450-500 ℃was suitable for determining iron and zinc in infant formula;for various growth stages of infant formula milk powder with same brand for the same manufacturer,iron content exhibited some difference and zinc content showed significant difference;for various brands of baby formula,iron and zinc content had no significant difference;but for children infant formula,amounts of iron and zinc exhibited significant difference.The values determined in 6 brands of infant milk powder were in agreement with the requirements of national standard GB/T5413.21-1997.[Conclusion] Scientifically and comprehensively evaluating Fe,Zn content in infant formula milk power has positive significance on quality assessment and guidance for consumption.
出处
《安徽农业科学》
CAS
2012年第33期16374-16376,共3页
Journal of Anhui Agricultural Sciences
关键词
婴幼儿配方奶粉
干法灰化法
原子吸收光谱法
铁
锌
Infant formula milk power
Ashing method
Flame atomic absorption spectrometry
Fe
Zn
