Structure and properties of lipase activated by cellulose-silica polyethersulfone membrane for production of pentyl valerate.

•Nanocellulose (NC) and silica (SiO2) were successfully isolated from oil palm leaves.•NC and SiO2 were the nanofillers in the polyethersulfone (PES) membrane.•CRL was successfully immobilized onto the ternary NC-SiO2-PES membrane.•NC-SiO2-PES used a 0.02 cm membrane in 5% (w/v) NC-SiO2 without PVP K30.•The NC-SiO2-PES/CRLs gave the highest yield of 91.3 % pentyl valerate in just 3 h.