Chemical Composition of Essential Oil, Antioxidant, Antidiabetic, Anti-obesity, and Neuroprotective Properties of Prangos gaubae

Chemical composition of essential oil and the potential of Prangos gaubae for the management of public health problems such as Alzheimer's disease, obesity, Diabetes mellitus, and skin diseases were evaluated for the first time. In this direction, enzyme inhibitory effects, antioxidant activity, and total bioactive contents of the plant were determined. EO showed high acetylcholinesterase (2.97 mg GEs/g oil), α-amylase (1.35 mmol ACEs/g oil), α-glucosidase (38.84 mmol ACEs/g oil), and lipase (1.59 mmol OEs/g oil) inhibitory activities. Moreover, strong antioxidant effects were observed in antiradical (DPPH and ABTS), reducing power (CUPRAC and FRAP), total antioxidant, and metal chelating assays. Methanol extract exhibited promising DPPH radical scavenging activity (0.47 mmol TEs/g extract) and also high reducing power in CUPRAC (0.89 mmol TEs/g extract) and FRAP (0.52 mmol TEs/g extract) assays. All extracts showed low total flavonoid but high total phenolics content. Furthermore, they exhibited strong skin-care effect in tyrosinase inhibition assay. EO analysis showed the presence of germacrene D (26.7%), caryophyllene oxide (14.3%), (E)-caryophyllene (13.8%), and spathulenol (11.3%) as the major volatile components. Results indicated that P. gaubae has promising potential for possible uses in food, cosmetic, and pharmaceutical industries due to its valuable phytoconstituents and biological activities.

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