Antioxidant activity of ultrasonic extracts of leek Allium porrum L
| Autor: | M Rados Pavlovic, Z Pavle Maskovic, Gordana Acamovic-Djokovic, D Jelena Mladenovic, C Blaga Radovanovic, S Milica Cvijovic |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Antioxidant
ultrasonic extracts antioxidant 030309 nutrition & dietetics DPPH General Chemical Engineering medicine.medical_treatment Allium porrum Stem-and-leaf display lcsh:Chemical technology 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Botany medicine lcsh:TP1-1185 Phenols Food science stem IC50 0303 health sciences Vitamin C leaf 010401 analytical chemistry Extraction (chemistry) food and beverages General Chemistry leek 0104 chemical sciences chemistry |
| Zdroj: | Hemijska industrija (2011) 65(4):473-477 Hemijska Industrija, Vol 65, Iss 4, Pp 473-477 (2011) |
| ISSN: | 0367-598X |
| Popis: | This study was aimed at evaluating the antioxidant activity and efficacy of the ethanolic extract of the ultrasonic extracts of leek Allium porrum L. Ethanolic (50%; v/v) extracts of edible leek parts (stem and leaf) were prepared by ultrasound-assisted extraction, which was followed by evaluation of total phenols, flavonoids and antioxidant activity. Total phenols were determined using the modified Folin-Ciocalteu method. Antioxidant activity was assessed by scavenging the stable free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH). The results of antioxidant activity were compared with control antioxidants: vitamin C and BHT. The higher content of phenols (69.46 mg GAE/g dry extract) and flavonoids (33.53 mg CE/g dry extract) was found in the ethanolic extract of leek stem. The measured values of IC50 were 98.90 g/ml and 61.05 g/ml for the ethanolic extract of leek leaf and stem, respectively. |
| Databáze: | OpenAIRE |
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