Total Phenols, Antioxidant Potential and Antimicrobial Activity of Methanol Extract of Rosemary (Rosmarinus officinalis L.)

Content Provider	Semantic Scholar
Author	Tavassoli, Sarah Djomeh, Zahra Emam
Copyright Year	2011
Abstract	In this work, we studied antioxidant activity and antimicrobial activity of rosemary leaves extract. Dry rosemary leaf powder was subjected to Soxhlet extraction with pure methanol. Yield extraction was 18.9% and the total phenolics were found to be 4.99±0.054 g as gallic acid/100g dry leaves. The antioxidant activity of rosemary leaves extract and two synthetic antioxidant: BHA and TBHQ was assessed using the DPPH radical- scavenging method. IC values showed that rosemary extract (0.024±0.005 mg/ml) has a higher antioxidant 50 activity than BHA (0.034±0.009 mg/ml). The antimicrobial activity of rosemary leaves extract against Leuconostoc mesenteroides, Lactobacillus delbruekii, Saccharomyces cerevisia and Candida krusei (Issatchenikia orientalis) were determined by minimum inhibitory concentration (MIC). The results indicated that among the tested microbes, rosemary extract were a stronger inhibitory effect on the bacteria. Minimum inhibitory concentration values for both bacteria Leuconostoc mesenteroides and Lactobacillus delbruekii ranged between 1. 5 mg/ml and 1.75 mg/ml.
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Alternate Webpage(s)	http://www.idosi.org/gv/GV7(4)11/4.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article