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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Sep 2010, 31 (5)                                     Back


abstract_01

Effective antibacterial and antioxidant properties of

methanolic extract of Laurus nobilis seed oil

 

Birgul Ozcan*1, Mari Esen1, M. Kemal Sangun2, Arzu Coleri3 and Mahmut Caliskan1

 

1Letters Biology Department, 2Letters Chemistry Department, Faculty of Sciences,

Mustafa Kemal University, Hatay - 31040, Turkey

 

3Biology Department, Faculty of Science, Ankara University, Ankara - 06100, Turkey

(Received: December 17, 2008; Revised received: March 31, 2009; Accepted: April 09, 2009)

 

Abstract: This study was carried out to determine the in vitro antimicrobial and antioxidant activities of the essential oil, seed oil, and methanolic extract of seed oil obtained from Laurus nobilis L. (Lauraceae). The methanolic extract of seed oil exhibited more effective antibacterial activity comparing to essential oil and seed oil. GC-MS analyses of the essential oil resulted in the identification of 25 compounds. 1.8-Cineol (44.72%), a-Terpinyl acetate (12.95%), Sabinene (12.82%) were the main components. The fatty acid composition was characterized with the high content of linoleic acid (40.79%) and lauric acid (38.08%). The 50% (IC50) inhibition activity of the essential oil on the free radical DPPH was determined as 94.655 mgml-1, whereas IC50 value of methanolic extract of seed oil was found unstable. In the case of the linoleic acid system, oxidation of linoleic acid was inhibited by essential oil and methanolic extract of seed oil, which showed 64.28 and 88.76% inhibition, respectively. The inhibition value of the methanolic extract of seed oil was quite close to the synthetic antioxidant BHT, 92.46% inhibition.

Key words: Seed oil, Antimicrobial activity, Antioxidant activity, Laurus nobilis

?????? PDF of full length paper is available online

 

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