《食品工业》2023年第44卷第1期313分析检测乳粉中钙、铁、钠消解方法比较及摄入量评估杜娟1，李亮2，郑许召1，朱贝贝1，丁肇旭1*1.谱尼测试集团股份有限公司（北京100095）；2.北京市食品检验研究院（北京市食品安全监控和风险评估中心）（北京100094）摘要该试验旨在对比微波消解、湿法消解和干法灰化3种前处理方式对检测婴幼儿配方乳粉中的铁(Fe)、钙(Ca)和钠(Na)含量的影响。结果表明,3种前处理方式对铁含量检测结果影响较大,对钙和钠含量检测结果影响较小。铁元素加标回收结果显示:湿法消解和微波消解均比干法灰化法的回收率高,3种前处理方式对铁元素的相对标准偏差均小于10%;微波消解法和湿法消解的回收率、准确度和精密度均较高;湿法消解操作较复杂,对环境不友好。试验筛选微波消解法作为前处理方式,检测12个品牌婴幼儿配方乳粉中Fe、Ca和Na元素含量。根据中国居民膳食指南,评估0~36个月婴幼儿Fe、Ca和Na元素摄入量,结果处于对应不同年龄段婴幼儿合理摄入量区间。关键词微波消解法;火焰原子吸收法;婴幼儿配方乳粉;摄入量评估ComparisonofDigestionMethodsofCalcium,IronandSodiuminMilkPowderandEvaluationofIntakeDUJuan1,LILiang2,ZHENGXuzhao1,ZHUBeibei1,DINGZhaoxu1*1.PonyTestingInternationalGroup(Beijing100095);2.BeijingMunicipalCenterforFoodSafetyMonitoringandRiskAssessment(Beijing100094)AbstractThestudyaimedtocomparetheeffectsofmicrowavedigestion,wetdigestionanddryashpretreatmentonthedeterminationofiron(Fe),calcium(Ca)andsodium(Na)contentininfantformulamilkpowder.Theresultsshowedthatthethreepretreatmentmethodshadgreatinfluenceontheresultsofironcontentdetection,andhadlittleinfluenceontheresultsofcalciumandsodiumcontentdetection.Therecoveryofironbyspikedmethodshowedthattherecoveryrateofwetdigestionandmicrowavedigestionwashigherthanthatofdryashmethod.Therelativestandarddeviationsofthethreepretreatmentmethodsforironwerealllessthan10%.Therecovery,accuracyandprecisionofmicrowavedigestionandwetdigestionwerehigher,andwetdigestionwascomplicatedandunfriendlytotheenvironment.ThecontentsofFe,CaandNain12brandsofinfantformulamilkpowderweredetermined.AccordingtothedietaryguidelinesofChineseresidents,theintakesofFe,CaandNaininfantsaged0-36monthswereevalua...
