Biochemical characterisation of MdCXE1, a carboxylesterase from apple that is expressed during fruit ripening

► Apple contains at least 16 carboxylesterases. ► MdCXE1 is differentially regulated in apple fruit during ripening. ► Recombinant MdCXE1 is inhibited by organophosphates. ► MdCXE1 can hydrolyse esters, suggesting a role of flavour metabolism.