Both the extracts exhibited a significant antibacterial activity against all the screened microorganisms. Key words: Leucas aspera, Antibacterial activity. Leucas aspera, Leucas zeylanica, antifungal, dermatophytes. RESULTS: Antifungal activity of Leucas sp. against Dermatophytes. Objective: The aim of this study was to explicate antibacterial, antifungal, and antioxidant activities of Leucas aspera flowers. Methods: Antibacterial activity was.

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Antioxidant activity of L. The antioxidant activity free radical scavenging activity of all parts root, flower, leaf and stem was determined via 1,1-diphenylpicrylhydrazyl DPPH assay.

Antifungal activity of three Chilean plant extracts on Botrytis cinerea. Plant material The plant L. R and Wyllie S. The entire plant is also used as an insecticide and indicated in traditional medicine for coughs, colds, painful swelling and chronic skin eruption [10]. In the present study the leaves and root extracts of Leucas aspera were investigated for invitro antibacterial activity and phytochemical analysis. The experiment was conducted in triplicates.

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Besides this, the chloroform and acetone extract showed good activity against the growth of Staphylococcus aureus 22mm ,Klebiella pneumonia 21mm ,Bacillus cereus 20mm and Enterobacter faecalis 15mm. Methanol extract of root possessed antioxidant activity near the range of vitamin E and thus could be a potential rich source of natural antioxidant. At a higher concentration, these extracts may exhibit more significant free radical scavenging activity. The leaves are also used as insecticides and mosquito repellent in rural area 6.


The antimicrobial activity of the plant extracts root, flower, leaf and stem was determined by disk diffusion technique [15]. By using a sterilized forcep, three sterilized Whatman paper disks 6 mm in diameter were transferred onto the agar surface. However, the aqueous extract did not exhibit any activity against S. The larvae were then separated from the eggs by aliquoting them in another glass Petri dish containing artificial sea water and used for the assay.

Phytochemical screening and antimicrobial activity of the plant extracts of Mimosa pudica L. In recent years, multiple drug resistance in human pathogenic microorganisms has developed due to indiscriminate use of commercial antimicrobial drugs commonly used in treatment of infectious diseases.

Antimicrobial activity of some Indian medicinal plants.

Biotechnology of medicinal plants-recent advances and potencial. Antibacterial activity was done by agar diffusion method. Microorganisms Gram positive Staphylococcus aureus S.

All the plant parts root, flower, leaf and stem were ground into powdered form with a grinder. Prior RL, Cao G.

In addition, this study also evaluated the antibacterial activity of different parts of L. Journal of Ethnopharmacology; Sasikala Associate Professor and Head, P. According to Rahman et al [12]the asperz extract of L. The activity against both types of bacteria may be indicative of the presence of broad spectrum of antibiotic compounds or simply general metabolic toxin [20].

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Antioxidant and antibacterial activity of different parts of Leucas aspera

Then, the segregated parts were cut into small size and sun dried for 1 week. Based on the results, the root extract showed the highest zone of inhibition compared with all the extracts against all the tested microorganisms, followed by the flower extract which was more active against Salmonella species compared with other tested microorganisms. The increase in resistance of microorganisms encouraged scientists to search for actiity antimicrobial agents from plants.

Cytotoxic activity of root extract of L. On the other hand, the scavenging activity of flower, leaf and stem extracts was Antifungal activity was also done by agar diffusion method. The difference in the zone of inhibition is probably due to the different solvents used for extraction and also the fact that the extracts in the previous study were from the entire plant whereas in this study the plant parts were segregated and tested individually.

Compounds isolated from the plant include long chain aliphatic compound, triterpenes, sterols and oeucas phenolic compounds [11].