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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.
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 s ignificant antifungal activities which are 80.11% and 66.85% respectively. Conclusions: Overall, methanol extracts from root and stem of both species showed activity activity comparable to standard butylated hydroxytoluene. Extracts from L resinosa conducted stronger antimicrobial properties compared to that from L elliptica.