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Antioxidant and antimicrobial properties of Litsea elliptica Blume and Litsea resinosa Blume(Lauraceae)

查看全文 作　　者：Mui-Hung [1]Wong;Li-Fang [2]Lim;Fasihuddin bin [3]Ahmad;Zaini bin [3]Assim 高影响力作者 机构地区：[1]Faculty of Applied Sciences,Universiti.Teknologi MARA.Samarahan Campus,Sarawak Branch;[2]Faculty of Engineering,Computing and Science.Swinburne University of Technology,Sarawak Campus;[3]Department of Chemistry,Faculty of Resource Science and Technology,Universiti Malaysia Sarawak高影响力机构 出　　处：《Asian Pacific Journal of Tropical Biomedicine》索引2014年第4卷第5期,共7页高影响力期刊 基　　金：Funded by Universiti Malaysia Sarawak(UNIMAS)research grant E14052-F07-49-792/2011(2);scholarship to the postgraduate by Universiti Teknologi MARA(UITM) 摘　　要：Objective:To investigate antioxidant and antimicrobial activities of two plant species,Litsea elliptica(L elliptica) and Litsea resinosa(L resinosa).Methods:In vitro method-2,2-diphenyl-1-picrylhydrazyl radical scavenging assay was conducted for antioxidant activity detennination while antimicrobial assay consisted of agar well diffusion assay and mycelial radial growth assay.Results:Methanol extracts of root and stem of L elliptica and L resinosa exhibited the highest antioxidant activity with EC_(50)of 23.99,41.69,11.22 and 33.48 mg/l.respectively.All methanol extracts of L resinosa as well as root extracts from L elliptica showed significant scavenging activity.Hexane extract from stem of L resinosa presented the largest inhibition zone in Gramnegative bacteria Pseudomonas aeruginosa and Escherichia coli while chloroform extract from inner bark of L resinosa showed major inhibition towards Gram-positive bacteria Bacillus subtilis.Essential oils from the root of both species showed significant antifungal activities which are 80.11%and 66.85%respectively.Conclusions:Overall,methanol extracts from root and stem of both species showed antioxidant activity comparable to standard butylated hydroxytoluene.Extracts from L resinosa demonstrated stronger antimicrobial properties compared to that from L elliptica. 关 键 词：LITSEA elliptica LITSEA resinosa ANTIOXIDANT ANTIFUNGAL Antibacterial EC50
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