Resumo (PT):
Capsella bursa-pastoris (L.) Medik. (Brassicaceae) is a wild herb with
high nutritional value that can be eaten raw or cooked. A metabolomic study was
performed with different extracts of its aerial parts that were tested concerning their
antiradical, acetylcholinesterase inhibitory and antibacterial activities. Phenolic
compounds were identified and quantified by HPLC-DAD, organic acids and
amino acids were determined by HPLC-UV, while free fatty acids and sterols were
analysed by GC-ITMS. The vegetal material was rich in kaempferol-3-O-rutinoside
(mean value 2247.09 mg/kg of dry plant), quinic acid (95628.00 mg/kg of dry plant),
arginine (mean value of 1.18 mg/kg of dry plant), palmitic acid (284.48 mg/kg) and
β-sitosterol (28%). The extracts presented a concentration-dependent antiradical
activity (against DPPH•, O2
•- and LOO•), being most effective against •NO (EC25
0.20 μg/mL). In addition, the extracts were also acetylcholinesterase inhibitors and
antibacterial active, revealing that, besides the plant’s good nutritional value, it
presents important biological properties as well.
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Abstract (EN):
Capsella bursa-pastoris (L.) Medik. (Brassicaceae) is a wild herb with high nutritional value that can be eaten raw or cooked. A metabolomic study was performed with different extracts of its aerial parts that were tested concerning their antiradical, acetylcholinesterase inhibitory and antibacterial activities. Phenolic compounds were identified and quantified by HPLC-DAD, organic acids and amino acids were determined by HPLC-UV, while free fatty acids and sterols were analysed by GC-ITMS. The vegetal material was rich in kaempferol-3-O-rutinoside (mean value 2247.09 mg/kg of dry plant), quinic acid (95628.00 mg/kg of dry plant), arginine (mean value of 1.18 mg/kg of dry plant), palmitic acid (284.48 mg/kg) and beta-sitosterol (28%). The extracts presented a concentration-dependent antiradical activity (against DPPH center dot, O-2(center dot-) and LOO center dot), being most effective against (NO)-N-center dot (EC25 0.20 mu g/mL). In addition, the extracts were also acetylcholinesterase inhibitors and antibacterial active, revealing that, besides the plant's good nutritional value, it presents important biological properties as well.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
10