ABSTRACT
Methanol extracts of the leaves of Tagetes terniflora and ethyl acetate and aqueous fractions showed different degrees of activity against Gram positive and Gram negative strains.
Subject(s)
Anti-Bacterial Agents/pharmacology , Gram-Negative Bacteria/drug effects , Gram-Positive Bacteria/drug effects , Phytotherapy , Plant Extracts/pharmacology , Tagetes , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/therapeutic use , Dose-Response Relationship, Drug , Humans , Microbial Sensitivity Tests , Plant Extracts/administration & dosage , Plant Extracts/therapeutic use , Plant LeavesABSTRACT
The flavonoid containing total extract of Anthemis cotula flowers, tested at the concentration of 200 microg/ml, showed interesting antimicrobial activity against both Gram-negative and Gram-positive microorganisms.
Subject(s)
Anti-Bacterial Agents/pharmacology , Asteraceae , Gram-Negative Bacteria/drug effects , Gram-Positive Bacteria/drug effects , Humans , Microbial Sensitivity Tests , Plant Extracts/pharmacologyABSTRACT
Preliminary studies of flavonoids have been realised in five native species from Tafí del Valle (Tucumán, Argentina) used in popular medicine. Most of compounds detected were flavonoids mono and dihydroxylated in B ring. Screening for antimicrobial activity against Gram positive and Gram negative microorganisms has been realised with Lippia turbinata, Satureja parvifolia, Sambucus peruviana, Verbena officinalis and Chenopodium graveolens. The total extracts of flavonoids of each plant were tested and four species studied showed antimicrobial activity.
Subject(s)
Anti-Bacterial Agents/pharmacology , Bacteria/drug effects , Ethnobotany , Flavonoids/pharmacology , Plants, Medicinal , Anti-Bacterial Agents/isolation & purification , Argentina , Chloramphenicol/pharmacology , Flavonoids/isolation & purification , Microbial Sensitivity TestsABSTRACT
The total extract and fractions with different solvents, obtained from leaves of Tagetes minuta, showed several degrees of antimicrobial activity against Gram positive and Gram negative microorganisms. The same fractions were inactive against Lactobacillus, Zymomonas and Saccharomices species. The major component of the extract: quercetagetin-7-arabinosyl-galactoside, showed significant antimicrobial activity on pathogen microorganisms tested. Correlation results were carried out using chloramphenicol as standard antibiotic.
