Process for enzymatic cleavage of C-S bonds and process for reducing the sulfur content of sulfur-containing organic carbonaceous material

A process for reducing the sulfur content of sulfur-containing organic carbonaceous material comprising, contacting a sulfur-containing organic carbonaceous material with a sulfur specific enzyme reactant agent selected from the group consisting of at least one microorganism membrane fragment comprising at least one enzyme, at least one extract from said at least one membrane fragment comprising said at least one enzyme, and mixtures of said at least one membrane fragment and said at least one extract, wherein said enzyme is obtained from a microorganism selected from the group consisting of Rhodococcus rhodochrous, derivatives of Rhodococcus rhodochrous, Bacillus sphaericus, derivatives of Bacillus sphaericus, and mixtures thereof, said at least one enzyme having the ability to selectively react with sulfur of sulfur-containing organic carbonaceous material by cleavage of organic C--S bonds, and separating formed sulfur-containing compounds from organic carbonaceous material from which sulfur has been cleaved.