Improvement of thermostability and activity of pectate lyase in the presence of hydroxyapatite nanoparticles

► The activity of PL is enhanced at high temperature in presence of HAp-NP. ► NP-PL retained its activity for 4 hrs at 90 °C. ► NP-PL activity was found to increase gradually with time at 90 °C. ► NP-PL had enhanced entropy enthalpy compensation at high temperatures. ► NP-PL can be potentially used for the processing of food and natural fibers.