The important by-products obtained during manufacture of
Shellac are Molamma, Kiri, Passewa, Shellac
Wax and Lac Dye.
This product is obtained during winnowing or sieving of washed
seedlac. It is usually in the form of fine dust comprising of lac associated with wood particles and such other ingredients as are normally common in sticklac. This lac content varies from 45 to 80%.
This is the residue retained in the bag after refining seedlac into shellac by hot filtration process. It contains apart from lac, materials like sand, insect debris and such other materials as are normally associated with seedlac. kiri is usually available in the form of round slabs. Lac content varies from 40-70%.
The product is obtained by boiling the cloth bag used for refining seedlac into shellac by the indigenous process. It is usually found as thick, slabs having a lac content to the extent of 90%.
Lac contains about 5% of wax. During the manufacture of dewaxed shellac, the wax is recovered. the wax has properties similar to the carnauba wax and has a number of industrial applications.
Lac Dye (Laccaic Acid):
Lac dye is obtained during washing of seedlac. Previously it was an important export commodity, but with the invention of synthetic dyes, the lac dye lost its field. At present it is practically a waste product. Research has been carried out both in India & China to find its application as a colouring matter of food and beverages. the toxicological test has proved that lac dye is harmless to the living system.