Posted by admin on Feb 1, 2013 in |
Antimicrobial activity of extracts leaves of Murraya koenigii (Curry) and Camellia sinensis (Tea) plants prepared in water, methanol and ethanol by cold maceration method were evaluated for their antimicrobial activity against Staphylococcus aureus (3) strains, Pseudomonas aeruginosa (3) and Candida species: Candida albicans (2 and one strain each of Candida tropicalis, and Candida parapsilosis. The plant materials were procured from Kangra District of Himachal Pradesh, India. Methanol and ethanol extracts of both the plants produced significant zones of inhibition against all the bacterial and fungal pathogen used in the study in the antimicrobial assay. However, aqueous extract did not show any significant activity. In this assay, the susceptibility of Staphylococcus aureus to Gentamicin and Ampicillin, Pseudomonas species to Ciprofloxacin and Candida species to Amphoterecin B was also assessed for comparative analysis. All the Staphylococcus strains were sensitive to Gentamicin but resistant to Ampicillin, but Ciprofloxacin had significant inhibitory effect against Pseudomonas strains except one, PA-39. All the strains of Candida species were resistant to Amphoterecin B. Phytochemical screening of...
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Posted by admin on Feb 1, 2013 in |
Objectives: Psoralea corylifolia L.(seeds) and Plumbago zeylanica L. (bark) were combined in the ratio of 8: 2 and named as “Swithranasini” and used for the treatment of skin diseases in ayurvedic medicine. Scientific studies validating the therapeutic properties for this indigenous medicine are lacking. This study focused on determining antimicrobial efficacy of methanol and butter milk extracts along with antioxidant efficacies of these plant parts independently and in combination. Materials and Methods: Antimicrobial activity was tested against seven pathogenic bacteria and six pathogenic fungiby measuring the zone of inhibition. In vitro antioxidant activities were assayed by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method and Ferric reducing antioxidant power (FRAP) method. Results: Individual extracts of the two plants showed better zone of inhibition (12- 40 mm) when applied alone but the activity was more when applied in combination (18-50 mm) against the tested pathogens. DPPH activity of methanol extracts showed higher radical scavenging activity when compared with the positive control, ascorbic acid. The IC50 values are 442.080, 457.825, 432.040 and 394.563 ug/ml for...
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Posted by admin on Feb 1, 2013 in |
Problem Statement: Do the soil Actinomycetes do have Antimicrobial and Petrol degradation potential? An intriguing question. Actinomycetes are continues to be a subject of study with reference to their Antimicrobial and degradative potential. However studies have been done is limited. Our object was to study its Antimicrobial activity in wide spectrum and to study its degradation potential on Petrol. Approach: In this study we have isolated total 5 Actinomycetes from the Ganga river bed. All the isolates later purified and identified by various Morphological and Biochemical test. Here Nocardia was subjected to antimicrobial test against Streptococcus, Mucor and Aspergillus and it was also subjected to degradation test against Petrol. Result: The 5 isolates are Streptomyces, Micromonospora, Micromono sporangium and 2 different strain of Nocardia (Na1 and Na2). The 2 strains of Nocardia are active against Streptococcus (Na1 29.6mm, Na2 26.6mm), Mucor (Na1 12.5mm, Na2 22.5mm) and Aspergillus (Na1 50%, Na2 60%). They also degrade Petrol very effectively, decrease in total organic carbon of the medium was observed during the...
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Posted by admin on Feb 1, 2013 in |
Plant is one of the important source of drugs that’s why we have done this project work to find out some biological activities of the plant exudates of Calotropis gigantea where antimicrobial, cytotoxic and antioxidant activity were analyzed. To test of antimicrobial activity, disc diffusion method has been followed. The exudate of the plant has shown antimicrobial activity against four microorganisms such as Escherichia coli (15mm), Vibrio mimicus (15mm), Vibrio parahemolytics (15mm)and Staphylococcus aureus (9mm). The exudates of the plant has shown cytotoxic activity which was done by following the brine shrimp lethality bioassay method. The result of the test has demonstrated good cytotoxic activity against Brine Shrimp Nauplii with a LC50 value of 12.66 µg ∕ml. The exudate of the plant has demonstrated good antioxidant activity with a LC50 value of 3.301 µg ∕ml..So from the project we can say that further investigation should be carried out to get the active...
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Posted by admin on Feb 1, 2013 in |
The present study was aimed at investigating the chemical composition and antifungal activity of Ethanol Extracted Haramaya propolis (EEHP). The GC-MS analysis of EEHP showed the presence of sixteen compounds and twelve compounds were identified by means of their retention times, by comparison of their mass spectra with the NIST 2005 library data and literature. The major constituents of EEHP were Benzenamine, N, N-dibutyl- (21.94%), Paromomycin (9.74%), 4-Aminobutyramide, N-methyl-N-[4-(1-pyrrolidinyl)-2-butynyl]- (9.26%) and DL-Tryptophan, 5-methoxy (7.43%). The Crude EEHP showed antifungal activities against Fusarium sp., Aspergillus niger and Colletotrichum sp. GC-MS results showed that the antifungal activities of Haramaya propolis could be because of the presence of 3-(α-Hydroxyethyl)-aniline, Benzenamine,N, N-dibutyl, DL-Tryptophan,5-methoxy, 6-Amino-5, 8-dimethoxyquinazoline, Paromomycin and Imidazole,...
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