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Aluminum status as affected by soft drinks packaged in glass and aluminum containers
Abstract
Three studies were conducted to investigate the effect of dietary aluminum on aluminum metabolism. In Study I, 30 male weanling rats were fed ad libitum Ralston Purina Rodent Chow and soft drinks packaged in glass bottles or aluminum cans, or distilled water. Weight gain and fecal aluminum excretions of rats were not demonstrated to be affected by beverage type. Whole blood, brain, bone and liver aluminum concentrations tended to be higher in rats fed canned beverages, when compared to distilled water fed rats. Of greatest concern was the 69% increase in femur bone aluminum concentration and 16% decline in femur bone weight in rats fed aluminum canned soft drinks rather than distilled water. In Study II, young adult human subjects were fed a laboratory controlled basal diet. Two sources of aluminum (Diet A and Diet B) were administered to determine utilization of aluminum from bottled and aluminum canned soft drinks. Fecal and urinary aluminum excretions were numerically higher when canned soft drinks were fed. Whole blood aluminum concentrations were numerically higher when subjects were fed the canned soft drinks (significantly so by non-parametric Test of Sign p $<$ 0.05) No statistically significant difference was demonstrated between the two treatment groups in mean aluminum balances. In Study III, aluminum concentrations and taste acceptability of soft drinks packaged freshly purchased and packaged in aluminum cans, freshly purchased and packaged in glass bottles and soft drinks packaged in aluminum cans which were stored for six months at room temperature were evaluated. A higher concentration of aluminum was found in the stored drinks than in the newly purchased cans. On the basis of container, taste panelists judged the new aluminum canned soft drinks as their best beverage. Taste apparently cannot be used as a reliable index of aluminum concentrations of canned soft drinks.
Subject Area
Nutrition|Packaging|Food science
Recommended Citation
Kandiah, Jayanthi, "Aluminum status as affected by soft drinks packaged in glass and aluminum containers" (1991). ETD collection for University of Nebraska-Lincoln. AAI9200142.
https://digitalcommons.unl.edu/dissertations/AAI9200142