Haytowitz David B, Pehrsson Pamela R
USDA-ARS Nutrient Data Laboratory, United States.
USDA-ARS Nutrient Data Laboratory, United States.
Food Chem. 2018 Jan 1;238:134-138. doi: 10.1016/j.foodchem.2016.11.082. Epub 2016 Nov 19.
For nearly 20years, the National Food and Nutrient Analysis Program (NFNAP) has expanded and improved the quantity and quality of data in US Department of Agriculture's (USDA) food composition databases (FCDB) through the collection and analysis of nationally representative food samples. NFNAP employs statistically valid sampling plans, the Key Foods approach to identify and prioritize foods and nutrients, comprehensive quality control protocols, and analytical oversight to generate new and updated analytical data for food components. NFNAP has allowed the Nutrient Data Laboratory to keep up with the dynamic US food supply and emerging scientific research. Recently generated results for nationally representative food samples show marked changes compared to previous database values for selected nutrients. Monitoring changes in the composition of foods is critical in keeping FCDB up-to-date, so that they remain a vital tool in assessing the nutrient intake of national populations, as well as for providing dietary advice.
近20年来，国家食品和营养分析项目（NFNAP）通过收集和分析具有全国代表性的食品样本，扩大并提升了美国农业部（USDA）食品成分数据库（FCDB）中数据的数量和质量。NFNAP采用统计有效的抽样计划、关键食品方法来识别食品和营养素并确定其优先级、全面的质量控制方案以及分析监督，以生成食品成分的新的和更新的分析数据。NFNAP使营养数据实验室能够跟上美国动态变化的食品供应和新兴的科学研究。最近针对具有全国代表性的食品样本得出的结果显示，与之前数据库中选定营养素的值相比有显著变化。监测食品成分的变化对于保持FCDB的时效性至关重要，这样它们才能始终成为评估全国人口营养摄入量以及提供饮食建议的重要工具。
