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Functional constituents of wild and cultivated Goji (L. barbarum L.) leaves: phytochemical characterization, biological profile, and computational studies
Scopus
Open Access Toplam 182 atıf DOI
Goji (Lycium barbarum L.) leaves are emphasized as a functional tea or as dietary supplements. The phenolic compound profile, antioxidant, enzyme inhibitory, antimicrobial, and antimutagenic activities of leaf extracts from two selected cultivars in comparison with wild-growing plants have been evaluated. HPLC-DAD/ESI-ToF-MS analysis revealed the presence of phenolic acids and flavonoids with chlorogenic acid and rutin being the dominant compounds in the cultivated plants, whereas rutin and kaempeferol-3-O-rutinoside for wild growing ones. In particular, cv. Erma contained the highest amount of chlorogenic acid and showed a strong tyrosinase-inhibitory effect. Staphylococcus aureus, Listeria monocytogenes, and Penicillium funiculosum were the most sensitive strains when exposed to extracts from cultivated plants. Antimutagenic activity was evaluated by Ames' test. The tested extracts provided high protection against mutagenicity induced by 2-anthramine (2-AA) to Salmonella typhimurium strains TA 98 and TA 100 (max. inhibition (%) 88% and 74.2%, respectively). Overall, Goji leaves are a rich source of bioactive compounds with functional properties that need further risk/benefit evaluation when used in foods or health-promoting formulations.
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Enzyme inhibitory and antioxidant properties of six mushroom species from the Agaricaceae family
Scopus
Havuzumuzda Open Access 47 atıf almış
Mushrooms are excellent sources of nutraceuticals and have attracted much interest as functional foods. In this work the inhibitory capacity of six macrofungus (Coprinus comatus, Macrolepiota mastoidea, Agaricus campestris, Lycoperdon utriforme, Macrolepiota procera, and Leucoagaricus leucothites) against key enzymes related to diabetes type II (α-amylase, α-glucosidase), Alzheimer's disease [acetylcholinesterase (AChE) and butyrylcholinesterase (BChE)] was assessed for the first time. The antioxidant properties (total antioxidant capacity, metal chelating, ferric reducing antioxidant power (FRAP), cupric reducing antioxidant capacity (CUPRAC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging assays) and phenolic contents of the selected mushroom species were also evaluated. We found that L. utriforme had the highest enzyme inhibitory activity (0.97 mg galantamine equivalents (GALAE)/g extract, 1.33 mg GALAE/g extract, 0.22 mmol acarbose equivalents (ACAE)/g extract, and 2.97 mmol ACAE/g extract against AChE, BChE, α-amylase, and α-glucosidase, respectively). A widely consumed mushroom species namely A. campestris possessed the highest phenolic content (15.63 mg GAE/g extract) and the maximum antioxidant potential against DPPH, ABTS, FRAP, and CUPRAC. Experimental data collected in the present study support the use of these mushrooms specially L. utriforme and A. campestris as functional foods for the management and/or prevention of diabetes type II, Alzheimer's disease, and oxidative stress related complications.
Atıf Yapan Makale Bilgileri
Kurumlar (3)
Ankara Üniversitesi
Ankara, Turkey
Selçuk Üniversitesi
Selçuklu, Turkey
University of Mauritius
Reduit, Mauritius