Summary
This paper, published in the Journal of Food Composition and Analysis, examines longitudinal changes in the mineral and trace element content of key plant-based foods in Finland by comparing compositional data from different survey periods. The study is likely to reflect the impact of Finland's well-documented selenium fertilisation policy, alongside changes in agricultural practice, crop varieties, and soil management, on the nutritional quality of the food supply. It contributes to food composition database maintenance and informs dietary assessment and public health nutrition in Finland.
UK applicability
While conducted in Finland, the findings are broadly relevant to UK food composition and nutrient density discussions, particularly regarding how soil management, fertilisation policy and variety change can alter the mineral content of staple foods; the Finnish selenium fertilisation programme offers a policy precedent that has been considered in UK and wider European nutrition contexts.
Key measures
Mineral and trace element concentrations (mg/kg or µg/kg fresh or dry weight) in cereals, fruits and vegetables across multiple time points; percentage change between survey periods
Outcomes reported
The study compared mineral and trace element concentrations in cereals, fruits and vegetables measured at different time points in Finland, assessing whether nutrient contents had changed over recent decades. It likely reports changes in elements such as selenium, iron, zinc, calcium, magnesium and copper across food categories.
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