Improvement of butyrylcholinesterase enzymeinhibition and medicinal properties of extracts ofAristotelia serrata leaves by ultrasound extraction
2020
Majid, Hafiz | Silva, Filipa V.M.
Aristotelia serrata, wineberry, or makomako, is a small deciduous fast-growing shrub of New Zealand that produces a berry. In this study leaf extracts were produced using ultra-sound technology. Alzheimer’s Disease is a progressive mental deterioration related with ageing and senility, in which approved drugs for treatment inhibit butyrylcholinesterase(BChE), an enzyme present in the human brain. The ultrasound assisted extraction of natural anti-butyrylcholinesterase and antioxidants from this plant, and the yield of extraction were optimized using response surface methodology. The effect of acoustic power density(0.13–0.65 W/mL), time (1–20 min), and ethanol concentration (20–80%) on BChE inhibition,antioxidant activity, and extraction yield was determined, the optimum extraction conditions being 0.53 W/mL, 17.12 min and 74% ethanol. The optimized extracts were produced to experimentally validate the predicted responses. The IC50 concentrations were experimentally determined (26.2 ug/mL for BChE, 5.5 ug/mL for radical scavenging activity). A. serrata leaf extracts have potential to be used as complements to medicines traditionally used for memory dysfunction
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