METHOD OF DYEING COTTON AND OTHER SUBSTRATES WITH A MICROORGANISM BIOMASS CONTAINING INDIGO

摘要

A biomass containing biologically produced indigo or a derivative thereof which is used for dyeing without isolating the indigo dye from the rest of the solid biomass before dyeing. Cotton dyeings of clean pure shade can be obtained by a vat dyeing procedure which have the usual fastness properties associated with the active substance.