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Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
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Abstract - Issue Sep 2010, 31 (5) BackEffective
antibacterial and antioxidant properties of methanolic extract of Laurus nobilis seed oil 1Letters Biology Department, 2Letters
Chemistry Department, Faculty of Sciences, 3Biology Department, Faculty of
Science, (Received: 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
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