Researchers in the US have used a washing powder ingredient to turn waste leather into a high-value protein used in the manufacture of adhesives and packaging films. Agricultural Research Service scientists used alkaline protease to break leather shavings into low value protein hydrolysate that can be used in fertilisers. By modifying the process the researchers found they could produce a high-value grade of gelatine protein equal in quality to commercially-produced gelatine. The protein is ideal for making adhesives, industrial packaging films and encapsulating agents for agricultural chemicals, they said. The tanning industry only converts 50 per cent of cattle hides into leather. The missing half is shaved off to give leather a uniform thickness. Each year, about 60,000tonnes of these waste shavings are dumped in landfill sites. The US agriculture secretary Dan Glickman, announcing the research recently, said, "This is an innovative process that puts to good use a waste product that is currently hauled off to landfills at a price." The discovery, which has already been patented, would prove extremely beneficial for both the environment and economy, Glickman said.
We are a voice to you; you have been a support to us. Together we build journalism that is independent, credible and fearless. You can further help us by making a donation. This will mean a lot for our ability to bring you news, perspectives and analysis from the ground so that we can make change together.
.png)
Comments are moderated and will be published only after the site moderator’s approval. Please use a genuine email ID and provide your name. Selected comments may also be used in the ‘Letters’ section of the Down To Earth print edition.