Borawska M, Markiewicz R, Witkowska A
Laboratory of Bromatology, Medical University, Bialystok, Poland.
Eur J Clin Nutr. 1998 Jul;52(7):489-93. doi: 10.1038/sj.ejcn.1600588.
A comparison of two methods: analytical and calculation on an estimation of dietary intakes of nitrate and nitrite from six different types of general hospital diets was studied. Studies were performed in the winter season of 1996-1997. It was found that the mean daily intake of nitrates was 85 mg per person in the analytical method, and 65 mg per person in the calculated method. The estimation of average dietary intakes of nitrite was adequate: 1.67 mg per person (the analytical method) and 1.18 mg per person (the calculated method). The main source of nitrates were vegetables, whereas the main source of nitrites was meat and meat-containing products. We suggest that the different methodologies, analytical and calculation methods, for measuring dietary intakes of nitrate and nitrite from diets make it possible to make direct comparisons of intakes.
通过分析和计算来估计六种不同类型的综合医院饮食中硝酸盐和亚硝酸盐的膳食摄入量。研究在1996 - 1997年冬季进行。结果发现，采用分析方法时每人每日硝酸盐平均摄入量为85毫克，采用计算方法时为65毫克。亚硝酸盐平均膳食摄入量的估计是合适的：采用分析方法时为每人1.67毫克，采用计算方法时为每人1.18毫克。硝酸盐的主要来源是蔬菜，而亚硝酸盐的主要来源是肉类及含肉类产品。我们认为，用于测量饮食中硝酸盐和亚硝酸盐膳食摄入量的不同方法，即分析方法和计算方法，使得对摄入量进行直接比较成为可能。
