Öko-Test found two whole grain flours failed its safety screening, with Aurora Vollkornweizenmehl rated „mangelhaft“ and Norma’s Bio Sonne Bio-Mehl Dinkel Vollkorn receiving „ungenügend.“
Which products failed the test and why
The Aurora Weizenmehl Vollkorn, priced at 1.89 Euro per kilogram, showed elevated levels of aromatic mineral oil hydrocarbons (MOAH) and contained traces of six pesticides, including the bee-harmful and reproduction-impairing insecticide Deltamethrin. Norma’s Bio Sonne Bio-Mehl Dinkel Vollkorn, sold for 1.25 Euro per kilogram, had increased cadmium and nickel levels along with raised saturated mineral oil hydrocarbons (MOSH), prompting the retailer to withdraw the tested batches from sale.
How the majority of products performed
Out of 50 whole grain flours tested from wheat, spelt and rye, 33 received the top rating of „sehr gut“ and six were rated „gut,“ with Aldi Nord and Süd’s Back Family Dinkelmehl Vollkorn at 1.09 Euro and Rewe Bio Dinkel Vollkorn Mehl at 1.29 Euro among the affordable top scorers. The test examined the flours for mineral oil residues, pesticides, heavy metals, mycotoxins and microbiological safety, although also reviewing packaging.
What consumers should consider when using whole grain flour
Since whole grain flour absorbs more liquid than white flour, bakers may need to add slightly more water or milk depending on the recipe and allowing the dough to rest longer helps the bran components hydrate fully. Using a baking tin can help maintain the dough’s shape during rising and baking.
Why did Öko-Test flag mineral oil and pesticide residues
Mineral oil hydrocarbons like MOAH are considered potentially carcinogenic with long-term exposure, while pesticides such as Deltamethrin are restricted due to their toxicity to bees and potential effects on human reproduction and development.
What action did Norma take after the test results
Norma announced it would withdraw the tested batches of Bio Sonne Bio-Mehl Dinkel Vollkorn from sale, as confirmed by Öko-Test.
