Seaweed study can help make washing our clothes greener

An enzyme made by bacteria living on seaweed is being used to make environmentally-friendly laundry detergents.

Scientists studied how bacteria release themselves from seaweed by using the novel phosphodiesterase enzyme, which breaks down the sticky molecules naturally present on its surface.

Newcastle University experts have developed its potential for use as a new type of natural cleaner which could be used to wash clothes.

They found that the enzyme could work at higher temperatures, but was at its best in lower ones, as in the sea.

The team, led by Professor Grant Burgess in collaboration with Dr Michael Hall, worked with Procter & Gamble to show it could work in modern laundry detergents which are designed for lower temperature washes, that are more environmentally friendly.

Dr Hall, senior lecturer in organic and biological chemistry, said: “Phosphodiesterases are found everywhere – they are even naturally present on your skin.

“But what was so exciting about this phosphodiesterase was its resilience.

“Most enzymes are quite fragile and are damaged by high temperatures, but this one was able to work in both hot and cold temperatures and still be highly effective.”

Prof Burgess, a marine biotechnology expert, said: “This is a wonderful example of borrowing a cleaning idea from Mother Nature.

“By studying how a seaweed keeps itself clean, we can now keep our own socks clean and fresh, while at the same time protecting our environment.”