| Autor: |
Mladenović Jelena D., Mašković Pavle Z., Pavlović Radoš M., Radovanović Blaga C., Aćamović-Đoković Gordana, Cvijović Milica S. |
| Jazyk: |
English<br />Serbian |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Hemijska Industrija, Vol 65, Iss 4, Pp 473-477 (2011) |
| Druh dokumentu: |
article |
| ISSN: |
0367-598X |
| DOI: |
10.2298/HEMIND110301033M |
| 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: |
Directory of Open Access Journals |
| Externí odkaz: |
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