Many vitamins are produced in chemical factories, often synthetically, but scientists at the Technical University of Denmark have succeeded in developing a natural and simple method for producing vitamin B2 (riboflavin) — by gently heating lactic acid bacteria. It produces significant quantities in a cost-effective and climate-friendly method, they highlight. The researchers say this could be a game-changer in developing countries, where many suffer from vitamin B2 deficiency, enabling fortification with B2 directly in local kitchens.