Sun, 17 Dec 2017

Isolation of Natural Dyes from the Flower of Hibiscus Rosa-Sinensis

 

Sankhadip Bose*, Souvik Nag

 

1. Department of Pharmacognosy, Gupta College of Technological Sciences, College of Pharmacy, Ashram More, G.T. Road, Asansol – 713301, West Bengal, India.


 

ABSTRACT

Natural dyes are now-a-days very common for every cloth industry because the harmfulness of synthetic dyes on the skin of human beings. In cotton, silk and also in wool these colours are stable and very much eco-friendly to human skin. So now, several attempts are taken by the scientists through out the world to isolate natural dyes from different vegetables and flowers. Here in this study an attempt has been taken to isolate natural dyes from the flowers of Hibiscus rosa-sinensis. In the result, three different colours like blue, purple and green were prepared from the above said flowers and they are well stable on cotton cloths after washing by hot water and soap too. The intensity of the three colours are also high, they are bright and really eco-friendly to the human skin.

Keywords: Natural dyes, Hibiscus rosa-sinensis, mordant

 


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