4. Conclusions
There is significant interest to re-introduce natural dyeing into present technical production scale for textile colouration. For the extraction of plant material a huge amount of plant material has to be handled in the dyehouse, which is a major drawback for a wider future use of such dye sources. The production of a concentrated dyestuff containing product was achieved by use of simple methods, which contain extraction, precipitation, sedimentation, filtration and drying. The processes require only basic equipment and thus can be installed at the site of farming and harvesting. This
technique has significant potential to replace the direct extraction of plant material in the dyehouse. In addition quality standardisation for improved reproducibility of the colour depth and shade can be done at the stage of dyestuff production