Antioxidant and antibacterial effects of laurus nobilis aqueous extract again Staphylococcus aureus and Escherichia coli

Subject Areas : Food Science and Technology

B.  Azimzadeh ¹ (M. Sc. Student of the Department of Food Science and Technology, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran)
M.  Jahadi ² (Assistant Professor of the Department of Food Science and Technology, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran)
M.  Fazel ³ (Assistant Professor of the Department of Food Science and Technology, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran)

Received: 2016-02-10 Accepted : 2016-11-27 Published : 2017-05-22

Keywords: Aqueous extract, Antioxidant effects, Antibacterial effectss, <i>Laurus nobilis</i> plant,

Abstract :

Some medical plants which are rich in phenolic compounds (flavnoieds, tannis and anthocyanin) have drawn increasing attention as the most important naturanal antioxidant source by many developed countries. Laurus nobilis is one of the medical plants that grows in various regions of Iran. This plants is known to have many benefits and medical properties such as diuretics and mosaics. Also, this plant is used in treatment of gastrointestinal problems, especialy and it is effectieve in elimination of stomach gas. In this experiment, we studied antioxidant and antibacterial effects of Laurus nobilis plant. To this purpose, the efficiency of aqueous solvent extract, phenolic compounds, DPPH radical scavenging and ferric-reducing power and ABTS free radical scavenging were examined. Antibacterial characteristics of aqueous extract was evaluated on Staphylococcus aureus and Escherichiacoli. The result shows that the aqueous extract of Lauros nobilis has 14/8% extraction efficiency with high rate of phenolic (99/9&plusmn;9/95) and the lowest IC50 in DPPH test (2/813) and the high rate of ferric reducing power (22/15&plusmn;2/10) and ABTS free radical scavenging (22/87&plusmn;2/03). The result of antibacterial test also indicates that aqueous extract has high antibacterial effect on Staphylococcus aureus (18&plusmn;0) and E. Coli (18&plusmn;0) mm.These facts show high antioxidant and antibacterial activity of laurel&rsquo;s extract.&nbsp;

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