Inhibitory effect of Bryophyllum pinnatum (Lam.) Oken leaf extract and their fractions on ?-amylase, ?-glucosidase and cholinesterase enzyme, Ojo, Oluwafemi Adeleke, Ojo Adebola Busola, Ajiboye Basiru Olaitan, Olaiya Oluranti, Akawa Ayodeji, Olaoye Oyindamola, Anifowose Omosola Olufisayo, Idowu Olajumoke, Olasehinde Oluwaseun, Obafemi Tajudeen, et al. , Pharmacognosy Journal, March 2018, Volume 10, Issue 3, p.497-506, (2018)