Abstract
In this study, the aerial parts and bulbs of nine Allium species were investigated for their functional phytochemical profile, in vitro antioxidant activities, acetylcholinesterase (AChE), butyrylcholinesterase (BChE), α-amylase, α-glucosidase, and tyrosinase inhibitory properties. Phenolics, alkaloids, glucosinolates and other sulfur-containing compounds were distinctively profiled in the different species. Maceration in methanol allowed recovering the highest cumulative phenolic content in A. scabrifolium (42.31 mg/g), followed by A. goekyigiti (33.15 mg/g) and A. atroviolaceum (28.35 mg/g). The aerial parts of all Allium species showed high in vitro antioxidant activity whereas methanolic extract of A. cappadocicum bulb showed the highest inhibition against AChE (2.44 mg galantamine equivalent/g) and the water extracts of A. isauricum aerial part were the best BChE inhibitors (4.31 mg galantamine equivalent/g). Bulbs were the richer source of oligosaccharides, and in vitro digestion determined an increase of oligosaccharides bioaccessibility. A promising nutraceutical potential could be highlighted in our understudied Allium species.
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