The copper content of foods based on a critical evaluation of published analytical data

An Application of Criteria to Evaluate Quality of Dietary Fibre Data in Brazilian Foods

“…On the other hand, Lurie et al (1989) evaluated data for copper and attained 14% of foods with CC A and Schubert et al (1987) did the same with selenium, attaining 25% of the foods with code A.…”

“…So the methodologies become more sensitive, with a higher level of quality control, and that is one of the factors responsible for the higher percentage of CC A in the analyses. Lurie et al (1989) found 62% of code C for copper because of the reduced number of samples analysed (280). The result is similar to that obtained in the evaluation of dietary "bre (71% showed CC C).…”

“…Studies were developed to evaluate data quality referring to certain nutrients in foods: selenium (Bigwood et al, 1987;Gebhardt and Holden, 1993;Holden et al, 1987;Schubert et al, 1987), copper (Lurie et al, 1989), carotenoids (Mangels et al, 1993) and folates .…”

Essential (Cu and Zn) and trace (Pb and Cd) heavy metal loads in onion and potato

“…Although potato is low copper-containing food, it is consumed frequently enough to be considered a substantial dietary source of copper (Lurie et al, 1989 None of the onion samples had Pb concentration above the limit set by regulations of the Republic of Serbia, but according to international standards, in 25 samples, it was above the limit. In one onion cultivar, Pb concentration was significantly higher, and in another one, it was significantly lower than in the others (Tab.…”

Key Foods: Setting Priorities for Nutrient Analyses

“…The foods in this list with imputed/calculated nutrient values were targeted for nutrient analyses by the Nutrient Data Laboratory in the late 1980s and early 1990s. Other researchers have also developed similar lists based on food consumption data from these surveys and new nutrient databases in targeting foods to be analyzed for selenium (Schubert et al, 1987), copper (Lurie et al, 1989), and carotenoids (Chug-Ahuja et al, 1993). Block et al (1985) described a process of determining important nutrient sources in the U.S. diet where food intake data were compiled from NHANES II (1976-80) and weighted for the U.S. population, ages 6 months to 74 years.…”