Microwave Assisted Green Isolation of Laccaic Acid from Lac Insect (Kerria lacca) for Wool Dyeing

Document Type : Original Article


1 Department of Chemistry, Government College University, Faisalabad 38000, Pakistan

2 Department of Applied Chemistry, Government College University, Faisalabad 38000, Pakistan

3 Department of Botany, Government College University, Faisalabad 38000, Pakistan

4 Applied Chemistry Research centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore, Pakistan


The utilization of sustainable products in the applied field is the recent demand of the global community. In this work the colouring behavior of laccaic acid as a source of natural red dye obtained from lac insect has been studied for the dyeing of wool fabric under microwave treatment. The extract was prepared in acidic medium and stimulated through MW treatment up to 7 min and used to dye fabrics. For developing new shades, eco-friendly green mordants such as extracts of acacia and turmeric were employed along with chemical mordants for comparative studies. The obtained results reveal that extract made in acidic medium after exposure for 5 minutes. has given high colour strength onto un-irradiated fabric when employed for 65 minutes at
75 °C. The rating of fastness properties shows that bio-anchors have given good ratings under optimal conditions. It is inferred that this eco-friendly tool has not only increased the coloring yield of natural anthraquinone dye from lac but also the inclusion of bio-mordants has made the natural coloration process more sustainable.


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