It is believed that chronic wounds get stuck in an inflammatory phase, with a low - oxygen microenvironment and the persistent presence of enzymes that break down tissue proteins. (sciencedaily.com)
Also, the presence of the enzymes like papain and pepsin in papaya is also a threat to the developing foetus. (gomama247.com)
To better understand exactly how lignin persists, researchers at the US Department of Energy's (DOE's) Oak Ridge National Laboratory (ORNL) created one of the largest biomolecular simulations to date — a 23.7 - million atom system representing pretreated biomass (cellulose and lignin) in the presence of enzymes. (sciencedaily.com)