and an anthocyanin dye extract obtained from red onion skin. Previous research showed that all of these substances have UV-blocking properties. In lab tests, separate sheets of nanocellulose film ...

Cotton or linen fabrics will give you the best results thanks to their cellulose fibers that easily absorb dyes. Onion-skin ...

Submerge the egg bundles in the cooled onion skin dye. The longer they soak, the deeper the color will be. For a light golden color, soak for 10 minutes. For a richer amber, soak for 30 minutes to ...

Last year, while living in Estonia, we dyed eggs this way, placing sprigs of dill, bits of rice, and whatever grass or leaves we could find in the yard inside the flaky onion skins. A ten-minute ...

In the picture, a film dyed with red onion skin extract and dye-sensitised solar cells. The films were placed on top of the solar cells in the study. Researchers at the University of Turku ...

A recent study by the University of Turku and Aalto University in Finland and Wageningen University in the Netherlands found that nanocellulose dyed with red onion skin extract provides very ...