Navigation Links
Silkworms spin colored silks while on a 'green' dyed-leaf diet
Date:12/4/2013

For some 5,000 years, cultivated silkworms have been spinning luxurious white silk fibers destined for use in the finest clothing. But current dyeing practices produce wastewater that contains potentially harmful toxins, so scientists are turning to a new, "greener" dyeing method in which they coax already-colored fibers from the caterpillars by feeding them dyed leaves. Their findings are published in the journal ACS Sustainable Chemistry & Engineering.

Anuya Nisal, Kanika Trivedy and colleagues point out that dyeing textile fabrics is one of today's most polluting industries. The process requires huge quantities of water for bleaching, washing and rinsing, and it results in a stream of harmful wastewater that needs to be treated effectively before release into the environment. To make the industry greener and more environmentally friendly, researchers have been developing less toxic methods, including feeding dyed leaves to silkworms so they spin colored rather than white cocoons. But so far, this technique has only been tested with one type of dye, which is too pricey for large-scale production. Thus, the team turned to azo dyes, which are inexpensive and account for more than half of the textile dyes used today.

They dipped or sprayed mulberry leaves, the silkworm's food of choice, with azo dyes to see which ones, when consumed, would transfer to the silk. Of the seven dyes they tested, three were incorporated into the caterpillars' silk, and none seemed to affect the worms' growth. The scientists noticed that certain dye traits, such as the ability to dissolve in water, affected how well the dye worked. "These insights are extremely important in development of novel dye molecules that can be successfully used in this green method of producing colored silk fabrics," they conclude.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Page: 1

Related biology news :

1. New beautifully colored long-horned beetle from Yunnan, China
2. Biologists produce rainbow-colored algae
3. Eating bright-colored fruits and vegetables may prevent or delay ALS
4. Dance of water molecules turns fire-colored beetles into antifreeze artists
5. The music of the silks
6. Harlequin ladybirds escape enemies while native species succumb
7. EU fishing fleets reap profits while taxpayers foot the bill
8. New technique controls dimensions of gold nanorods while manufacturing on a large scale
9. New evidence that cancer cells change while moving throughout body
10. Advance in regenerative medicine could make reprogrammed cells safer while improving their function
11. Study finds physicians need to better recognize use of herbal supplements while breastfeeding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... DUBLIN , Apr. 11, 2017 Research ... Tracking Market 2017-2021" report to their offering. ... The global eye tracking market to grow at ... The report, Global Eye Tracking Market 2017-2021, has been prepared based ... report covers the market landscape and its growth prospects over the ...
(Date:4/5/2017)... NEW YORK , April 5, 2017 ... security, is announcing that the server component of the ... is known for providing the end-to-end security architecture that ... customers. HYPR has already secured over 15 ... system makers including manufacturers of connected home product suites ...
(Date:3/30/2017)... 30, 2017 The research team of The ... (3D) fingerprint identification by adopting ground breaking 3D fingerprint minutiae recovery ... of speed and accuracy for use in identification, crime investigation, immigration ... ... A research team ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... ... August 16, 2017 , ... ... Fluidnatek® Electrospinning and Electrospraying line of nanofiber and ... table-top equipment for the lab to fully automated pilot plants and equipment ...
(Date:8/16/2017)... ... ... While art and science are often thought of as two completely separate ... A Mesh Is Also a Snare, a group exhibition presented by the Philadelphia-based artist ... (EKG) on August 17 and run through September 30. An opening reception will be ...
(Date:8/16/2017)... ... August 16, 2017 , ... We are proud ... (FDA) inspection at our Dilworth, MN site. The inspection took place Monday, July ... conducted as part of a routine Bioresearch Monitoring Program (BIMO) with the USFDA ...
(Date:8/16/2017)... BOSTON and OXFORD, England , ... -based consortium for biotech executive search and leadership development, ... and Healthcare sectors, have created an exclusive alliance that enables ... "For our clients here ... collaboration provides unparalleled access to a diverse population of leadership ...
Breaking Biology Technology: