27 Mar 2019 --- Wacker has revived its Fermopure brand name to include all of the amino acids that the group produces. L-cystine – the starting material for L-cysteine – is manufactured by fermentation at the company’s new site in León, Spain. The production site has been certified to both FSSC 22000 and ISO 9001 standards and thus satisfies all quality requirements, says Wacker. Due to the entirely plant-based and inorganic raw materials, Wacker’s cystine and cysteine are reportedly vegan and ideal for use in food and pharmaceutical products.