Osnabrück researchers develop selenium-enriched apples

Researchers at Osnabrück University of Applied Sciences have developed a selenium-enriched apple variety designed to improve natural nutritional intake. The fruit contains more than ten times the selenium found in conventional apples, with a single apple capable of meeting approximately half of an adult's daily requirement for this essential trace element.

Selenium is critical for the healthy functioning of the immune system and the thyroid. Because selenium levels in soil are often low, dietary needs are not always met through standard nutrition. To achieve this high concentration without genetic modification, researchers utilized a specialized algae-based fertilizer to supply the trees, specifically targeting Elstar apple cultivars.

The project transitioned from initial doctoral research and small-scale trials in 2016 to large-scale commercial cultivation. This development is particularly relevant for populations with higher nutritional needs or limited dietary access to selenium, such as vegetarians and vegans.