Non-targeted detection of milk powder adulteration by 1 H NMR spectroscopy and conformity index analysis
作者: Marti Mamula BerganaKristie M. AdamsJames HarnlyJeffrey C. MooreZhuohong Xie
作者单位: 1The United States Pharmacopeial Convention, 12601 Twinbrook Parkway, Rockville, MD, 20852, USA
2Food Composition and Methods Development Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service U.S. Department of Agriculture Building 161, BARC-East, Beltsville, MD, 20817, USA
刊名: Journal of Food Composition and Analysis, 2019, Vol.78 , pp.49-58
来源数据库: Elsevier Journal
DOI: 10.1016/j.jfca.2019.01.016
关键词: AdulterationAuthenticityConformity indexFood analysisFood compositionMilk powderNMR spectroscopyNon-targeted analysisProcessing effectsWet blended
原始语种摘要: Abstract(#br)A non-targeted method for classifying authentic and adulterated skim and nonfat dry milk powders (MP) by solution-state, high-field 1 H NMR spectroscopy and conformity index analysis has been developed. Authentic MP samples from the global market and synthetically-adulterated MP samples involving eight adulterants were used in a pre-validation study. Adulteration was detected at the lowest concentrations (≥ 0.005 – 0.05% w/w) for samples containing nitrogen-rich, small molecules (melamine and dicyandiamide). For urea, a milk metabolite, and for sucrose and maltodextrin, the detection thresholds were higher (≥ 0.5% w/w). An NMR peak associated with ammonium sulfate was not observed; however, adulteration was indirectly detected at 5% w/w via matrix effects on milk metabolites....
全文获取路径: Elsevier  (合作)
影响因子:2.088 (2012)

  • conformity 整合
  • analysis 分析
  • adulteration 掺杂
  • spectroscopy 分光学
  • targeted 对准目标的
  • NMR N-Modular Redundancy
  • adulterated 掺杂
  • successful 成功的
  • detection 探测
  • powder 粉末