ACHE and Alzheimer disease: Moreover, products made from plants are less expensive and have fewer adverse effects (Bhandary et al., 1995; Harsha et al., 2003) In this perspective, many phytochemicals from medicinal plants are investigated for anti-cholinesterases or anti-AChE activity and the most popular field of research in the management of AD as the prevalence of AD has increased (Adewusi & Steenkamp, 2011; Chapter 5 Purification and Characterisation, n.d.; Luccarini et al., 2015).