Beverages of lemon juice and exotic noni and papaya with potential for anticholinergic effects

Lemon (Citrus limon (L.) Burm. f.) juice beverages enriched either with noni (Morinda citrifolia L.) (LN) or papaya (Carica papaya L.) (LP), were characterized by HPLC-DAD-ESI/MSn, the antioxidant capacity was evaluated by (DPPH center dot), superoxide (O-2(is approximately equal to)), hydroxyl radicals (center dot OH) and hypochlorous acid (HOCl) assays, and their potential as acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibitors was also assessed. The fruits are rich in a wide range of bioactive phenolics. Regarding DPPH center dot, center dot OH and HOCl assays, the LP displayed strong activity, and LN was the most active against O-2(is approximately equal to). Concerning cholinesterases, LP was the most active, mainly due to lemon juice contribution. The effect on the cholinesterases was not as strong as in previous reports on purified extracts, but the bioactive-rich beverages offer the possibility of dietary coadjutants for daily consumption of health-promoting substances by adults with aging-related cognitive or physical disorders. (C) 2014 Elsevier Ltd. All rights reserved.