ArticleViewAbstractPharmacognosy Journal,2015,7,5,1-1.Published:9th June 2015Type:Original ArticleIn vitro Acetyl cholinesterase inhibitory assay of Acacia catechu Willd ethanolic seed extractLakshmi.T, and Rajendran.R Lakshmi. T *1, Rajendran. R 2 1Assistant professor ,Department of Pharmacology ,Saveetha Dental College & Hospitals, Chennai, India.2Green Chem Herbal Extracts & Formulations,Bangalore,India.Abstract:Aim & objective: The aim of this study was to evaluate acetyl cholinesterase inhibitory activity of Acacia catechu ethanolic seed extract to introduce a new source for management of Alzheimer’s disease. Background: Alzheimer’s disease is a complex, multifactorial, progressive, neurodegenerative disease primarily affecting the elderly population and is estimated to account for 50–60% of dementia cases in persons over 65 years of age. It is likely that the inhibition of acetyl cholinesterase by Acacia catechu ethanolic seed extract that is rich in flavonoids and antioxidants may aid in the protection of neurodegenerative disorders and ultimately Alzheimer's disease. Methods: Anti cholinesterase activity is determined by adopting In vitro standard protocol. Results: According to the obtained results, the inhibitory activity (IC50 values, μg /ml) of extracts was 204.38 ± 2.54 µ g/ml. Conclusion: The results indicated and confirmed the traditional use of Acacia catechu ethanolic seed extract for management of central nervous system disorders. It showed the moderate activity in inhibition of acetyl cholinesterase at various concentrations. However, further investigations on identification of active components in the extracts are needed.Key words: Acacia catechu seed, Acetyl cholinesterase inhibitor, Alzheimer’s disease, spectrophotometric analysis.Keywords:Acacia catechu seed, Acetyl cholinesterase inhibitor, Alzheimer’s disease, Spectrophotometric analysis.