Antioxidant and Antibacterial Activities of Crude Extracts and Essential Oils of Syzygium cumini LeavesReportar como inadecuado




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This research highlights the chemical composition, antioxidant and antibacterial activities of essential oils and various crude extracts using methanol and methylene chloride from Syzygium cumini leaves. Essential oils were analyzed by gas chromatography-mass spectrometry GC-MS.The abundant constituents of the oils were: α-pinene 32.32%, β-pinene 12.44%, trans-caryophyllene 11.19%, 1, 3, 6-octatriene 8.41%, delta-3-carene 5.55%, α-caryophyllene 4.36%, and α-limonene 3.42%.The antioxidant activities of all extracts were examined using two complementary methods, namely diphenylpicrylhydrazyl DPPH and ferric reducing power FRAP. In both methods, the methanol extract exhibited a higher activity than methylene chloride and essential oil extracts. A higher content of both total phenolics and flavonoids were found in the methanolic extract compared with other extracts. Furthermore, the methanol extract had higher antibacterial activity compared to methylene chloride and the essential oil extracts. Due to their antioxidant and antibacterial properties, the leaf extracts from S. cumini may be used as natural preservative ingredients in food and-or pharmaceutical industries.



Autor: Amal A. Mohamed , Sami I. Ali, Farouk K. El-Baz

Fuente: http://plos.srce.hr/



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