This indicates that NaNO2 levels below 100 ppm in the batter have no
significant effect on VTEC reductions in dry-fermented salami. Intake
of nitrosamines from heat-treated protein–NaNO2 complexes may
present a cancerogenic risk to human health, and European countries
therefore limit the maximum amount of added NaNO2 during
manufacture of fermented sausages to 150 ppm (EU directive 2006/
52/EC).