About us

Biolethics has been founded by the Dutchmen Rob ten Herkel and Ton Kléberg. Together with a number of researchers and universities they developed ESTAAN in four years' time as a 100% natural alternative to sulfite. The most important criterion for application in wine was that all properties, and the taste, would remain intact.

Estaan, a versatile product

Estaan is a natural complex of polyphenols, extracted from plants. The ingredients are derived from ten different plants from three continents. All natural, without synthetic components. Elaborate tests have preceded the application. Wine is the first product in which Estaan is used. But it can also be used as an antioxidant in silver onions, mustard, cosmetics, sliced vegetables, dried fruit, meat substitutes and potato chips. 

The developers call the substance the food preservative of the future. ‘The biggest breakthrough in the food preservative history.’ The plant formulation is based on a sequential multiphase separation technique, followed by purification steps. A process in which all active components stay intact. 

The first wine produced with Estaan has been successfully marketed. A light style Pinot Noir by the name of Novatura originating from the south of Germany. The vinification took place at the Dutch wine company “Colonjes”. Colonjes is the first organic wine company that has obtained a license to use Estaan as an alternative to sulphite.

Novatura 2019 is a light style Pinot Noir and is characterised by aromas of fresh fruit, wild cherries, blackberries, light spiciness and vanilla. Novatura 2019 should be served slightly chilled and goes particularly well with veal and grilled vegetables, or as an aperitif.