Allahabad:

A research scholar of the Allahabad University (AU) has created scented dyes from the petals of marigold and rose dumped outside city temples. The dyes have been accepted for patent and the research could help check pollution in rivers where tons of flowers are thrown after puja.

The dyes — yellow from marigold and pink from rose — have been prepared by Manpreet Kalsy, a research scholar under head of the department Prof Sangeeta Srivastava. The patenting authority has issued temporary patent numbers 27/DEL/2015 and 253/DEL/2015 for dyes prepared from marigold and rose respectively.

“The two scented dyes have been prepared under controlled lab conditions and tested on silk. They could be used for a number of times after being prepared and the dyed fabric would retain the fragrance for over six months,” said Manpreet.

“Huge quantity of flowers are offered in temples daily and later dumped in rivers, adding to environmental pollution. This gave us the idea of utilising used flowers. Our research is aimed at extracting natural colour from this huge quantity of floral waste,” said Prof Srivastava.

Natural dyes are one which are eco-friendly, biodegradable and non-toxic in nature. Moreover, the dyes prepared by us are antioxidant and antimicrobial in nature, she added.

Manpreet, a junior research fellow (JRF) who has done this work along with her guide, said: “The samples for preparing these dyes were specifically collected from the major temples of the city besides the banks of the Ganga because it was this menace that we wanted to handle. We are confident that at least one of the major sources of river pollution, ie, marigold and rose, could be used for colouring silk.”

Silk could be the fabric of choice as it is used for bridal dresses and scented dye would add to the fragrance, she added.

source: http://www.timesofindia.indiatimes.com / The Times of India / News Home> City> Allahabad / Raveev Maini / TNN / April 12th, 2016