The objectives of the study were to screen out selected medicinal plants of kohat for their antimicrobial activities. In this study, the antimicrobial activities of eight species plants, used for treatment of various diseases, were investigated. The aim of most papers investigating the antimicrobial activity of plant extracts is to find new antibiotics that would address the growing resistance against antibiotics. The antimicrobial potential of seventyseven extracts from twentyfour plants was screened against eight bacteria and four pathogenic fungi. Antimicrobial activity of some plant extracts against. Plant nametype of extract susceptible microorganism reference garcinia mangostana alpha. The in vitro antimicrobial activity of chloroform and methanol plant extracts were assayed using the agarstreak method and 38 of them showed activity against some of the microorganisms tested. Medicinal plants constitute an effective source of antimicrobial natural products.
The results obtained with pseudomonas aeruginosa was particularly interesting, since it was inhibited by clove, jambolan, pomegranate and thyme extracts. The antimicrobial activity of plant extracts and phytochemicals was evaluated with antibiotic susceptible and resistant microorganisms. To determine antibacterial activity of water, oil and methanol extracts of guava psidium guajava, green tea camellia. Traditional herbalists used plants to treat infectious disease. Data on antimicrobial activity measure as a zone of inhibition of aqueous extracts of eleven plant species and two antibiotics on.
Therefore, the methanolic extracts from different parts of four medicinal plants used locally in folk medicine were evaluated for antimicrobial activity. Antimicrobial activity of some indian medicinal plants ncbi. Antimicrobial activity of essential oils and other plant. Pdf medicinal plants and antimicrobial activity researchgate. Antimicrobial activity of plant extract was considered to be good if its mic was less than 100. Antimicrobial activity study of ethanolic extract of. Antibacterial activity in vitro of medicinal plants. Antimicrobial activity of selected medicinal plants. In vitro inhibition of bacterial endotoxin has been demonstrated by an unidentified component in. Pdf the resistance of pathogenic bacterial strains to antibiotics is the major burning issue around the world. However, the antimicrobial activity differs from region to region, plant parts used, type of extraction, and protocols employed.
Peppermint with antiseptic and known healing properties is a plant from the labiatae family. Antara sen department of botany, university of rajasthan, jaipur, india. Medicinal plants, ethanol, methanol and aqueous extracts, human pathogens, antimicrobial activity. We have studied antimicrobial activity of rosemary extracts rosmarinus officinalis l. Leaves of nine medicinal plant species with high antibacterial activity against escherichia coli were extracted with acetone and their minimal. The use of plant extracts with known antimicrobial properties, can be of great significance in therapeutic treatments. Antibacterial activity in vitro of medicinal plants wardah shahid 1, rabia durrani 2, saira iram2, maryam durrani 3, fawad ali khan 4 1plant taxonomy lab, department of plant sciences, faculty of biological sciences, quaidiazam university, 45320, 00925190643194, islamabad, pakistan. Green synthesis, characterization and antimicrobial activity of silver nanoparticles from plectranthus amboinicus plant extracts niveditha. The worldwide increase of multidrug resistance in both community and healthcare associated bacterial infections has impaired the current antimicrobial therapy, warranting the search for other alternatives.
Thus, a varied range of natural products of plant, fungi and lichen origin were tested against two bacterial species, staphylococcus aureus atcc 25923 and escherichia coli atcc 25922, by. Hence, the present study is first systematic attempt to analyse the antibacterial and antifungal potential of these three species on selected bacterial and fungal strains. Sc student, department of biotechnology, nehru arts and science college, coimbatore associate professor, department of microbiology, nehru arts and science college, coimbatore abstract. The antimicrobial compounds produced by plants are active against plant and human. A wide range of medicinal plants extracts are used to treat several infections as they have potential antimicrobial activity. The high activity of the phenolic components may be further explained in terms of the alkyl substitution into the phenol nucleus, which is known to enhance the antimicrobial activity of phenols pelczar et al. Mic value shows that these plant extracts have the least antimicrobial activity. Antibacterial activity of oleander on certain grampositive and gramnegative bacteria was studied and considerable antimicrobial activity was found. Crude methanolic plant extracts typically have the highest concentration and highest number of flavonoids, and thereby the strongest antimicrobial activity dar et al.
Evaluation of antimicrobial activity of different solvent. Antimicrobial activity of some medicinal plant extracts against bacteria causing diarrhoea by naomi tope komolafe submitted in accordance with the requirements for the degree of master of science in the subject life sciences at the university of south africa supervisor. Conflicting evidence exists for the action of cinnamon on helicobacter pylori. In addition, the evidences of the presence of antimicrobial biological activity reported in recent studies will be presented. The introduction of alkylation has been proposed to alter the distribution ratio between the aqueous and the nonaqueous phases. A study of antimicrobial activity of few medicinal herbs. Antimicrobial activity and phytochemical analysis of. Its antimicrobial activity was evaluated against bacteria, fungi. Filter paper discs were sterilized in a dry heat sterilizer and kept in the refrigerator for further use. Antimicrobial activity of medicinal plant extracts and. The antimicrobial activity may be due to a wide variety of secondary metabolites, such as tannins, terpenoids, alkaloids. Many scientists around the world are performing research on plants to be able to discover possible antimicrobial compounds. A method frequently used to screen plant extracts for antimicrobial activity is the agar disc diffusion technique morris et al. Some common spices and plants with antimicrobial and.
Pdf in vitro antimicrobial activity of mangrove plant. Priscilla adelaide naa agowa lovellantiaye 10397194 department of microbiology, university of ghana medical school. Evaluation of antibacterial activity of some medicinal plants extracts. Antimicrobial activity of plant secondary metabolites. Total extractives of four of the five plants examined showed activity against staphylococcus aureus, bacillus subtilis, escherichia coli and pseudomonas aeruginosa. Pdf antimicrobial activity of medicinal plant leaf extracts against. Medicinal plants, traditional uses, phytochemical effects, antimicrobial activity. The increased resistance of microorganisms to the currently used antimicrobials has lead to the evaluation of other agents that might have antimicrobial activity. With the introduction of variety of antimicrobials it became necessary to perform the antimicrobial susceptibility test. Introduction medicinal plants are abundant source of antimicrobial molecules. Antibacterial activity of medicinal plant extracts article pdf available in brazilian journal of microbiology 384. Avoiding pitfalls in determining antimicrobial activity of. Evaluation of antibacterial activity of some traditionally.
Antimicrobial activity antibacterial activity introduction the science dealing with the study of the prevention and treatment of diseases caused by microorganisms is known as medical microbiology. The evaluation of antibacterial activity for different extracts of each plant was carried out using the disc diffusion method and determination of minimum. The search for new antimicrobial natural products from plant materials is essential in order to curb the menace of multiple antibiotics resistant pathogens. Some promising plants having antimicrobial activity against multidrug resistant strains. Table 2 summarizes the results obtained and listed the only plant species that presented some activity against at least one microorganism. Antimicrobial activity and phytochemical analysis of calotropis gigantea root, latex extracts. Antimicrobial activity of ginger zingiber officinale. Bioactive aqueous extracts of twelve yucatecan plants. Cinnamon extracts have been shown to exert in vitro activity against some common human pathogens and fungicidal activity against plant pathogens. Evaluating antimicrobial activity of aloe vera plant extract in human life. The antibacterial activity of extracts of nine plant species with good.
Secondly, the method used to assess antimicrobial activity, and the choice of test organisms, varies between publications janssen et al. Antimicrobial activity of selected medicinal plants against some selected. Aloe vera gel is a bactericidal agent causing against pseudomonas aeruginosa and acemannan and cite this article. Numerous antimicrobial activities of the extracts, essential oils, and components of c. Many focus on determining the antimicrobial activity of plant extracts found in folk medicine, essential oils or isolated compounds such as alkaloids, flavonoids, sesquiterpene lactones, diterpenes, triterpenes or naphtoquinones, among others. Many of these plants have been investigated scientifically for antimicrobial activity, and some plant products have been shown to inhibit the growth of pathogenic microorganisms. Antimicrobial activity of some medicinal plant extracts. The development of new antimicrobial agents against resistant pathogens is increasing interest. Furthermore, the solvent used for the preparation may influence the extract contents and affect the antimicrobial activity. Deans aromatic and medicinal plant group, scottish agricultural college, auchincruive, south ayrshire, uk 7288799. Antimicrobial tests for the leaves stem and roots of the studied plants were carried out against the pure cultures of and escherichia coli. Antibacterial and antifungal activities of plant part extracts against four pathogenic bacteria two grampositive and negative and three pathogenic fungi were investigated by the agar disk diffusion method.
The methanolic extract of leaf of the plant azadiracta indica, acacia nilotica and witania somnifera showed significant antibacterial activity against bacillus subtilis, escherchia coli, stphaylocuccus aureus and pseudomonas. Extraction of plant latex is a complex emulsion of polymer micro particles in an aqueous medium. The in vitro antimicrobial activity and the minimum inhibitory concentration. These include antimicrobial, antifungal, anticancer and antiinflammatory activities. We aimed to find the in vitro antibacterial activity of ethanolic extracts of 16 different traditionally used medicinal plants of nepal against clinical and 2 reference bacterial. Evaluating antimicrobial activity of aloe vera plant. Studies on some plant extracts for their antimicrobial. Pdf antibacterial activity of important medicinal plants on human. Association of antibiotics and plant extracts showed synergistic antibacterial activity against antibioticresistant bacteria. Table 2 mic of plant extracts against the microorganisms by micro dilution broth assay. Results of antimicrobial activity of the five plant extracts can suggested that s.
Antimicrobial activity an overview sciencedirect topics. In vitro antimicrobial activity of mangrove plant sonneratia alba. Its subdisciplines are virology study of viruses, bacteriology study of bacteria. Some food supplements based on plant extracts do have useful antimicrobial activity and have been commercialized, but the aim is not to yield new antibiotics. Nutrient agar 20ml was dispensed into sterile universal bottles. The antimicrobial activity and minimum inhibitory concentration mic of various plant extracts in different solvents such as ethanol 98%, hexane.
Phytochemical analysis of traditional medicinal plants and. Preliminary studies have been conducted into the antibacterial activity of extracts from some local medicinal plants from the family connaraceae. Antimicrobial activity of medicinal plants against human. For this study, only the antimicrobial activity of different secondary metabolite compounds from different plants will be discussed. Chemical composition and antimicrobial activity of. Chloroform, butanol, ethyl acetate and nhexane extracts of these plants were used for antimicrobial screening. Antimicrobial activity of leaves extract of plumbago. Antimicrobial activity of medicinal plants against human pathogenic bacteria 657 inflammatory properties of plants mahesh and satish, 2008. Malvaceae against cotrimoxazolresistant bacteria strains. Review article antimicrobial activity of plantfood byproducts. Each purified extracts were dissolved in dimethyl sulfoxide, sterilized by filtration using sintered glass filter, and stored at 4c. Antimicrobial activity of ethanolic punica granatum extract and its fractions showed a highly antibacterial activity against gram positive s. The antimicrobial activity of medicinal plant against various pathogenic bacteria has been demonstrated, tadhani and subhash, 2006, lino and deogracious, 2006, doughari, 2006, abere et al 2007.
In vitro antimicrobial activity of some medicinal plants. All the test organisms were screened for their antibacterial activity against leaf and bark extract of azadirachta indica by agar well diffusion method. Antimicrobial activity of rosemary extracts rosmarinus. Antimicrobial activity of some indian medicinal plants. The increasing incidence of microorganisms becoming resistant to antibiotics has continuously become a scientific community concern. Some of these compounds were isolated or obtained by bioguided. Pdf antibacterial activity of medicinal plant extracts.
Antibacterial and antifungal activities from leaf extracts. Antimicrobial activity of some plant species used for the medical. Antimicrobial activity of ginger zingiber officinale extracts 869 antibacterial assay filter paper discs 6mm diameter were prepared using a punch machine. Many focus on determining the antimicrobial activity of plant extracts found in folk medicine, essential oils or isolated compounds such as alkaloids, flavonoids. Antioxidant, antihypertensive, antihyperglycemic, and antimicrobial. Antimicrobial activity of polyphenolrich fractions from sida alba l. In this study, we analyzed the chemical composition of essential oil from the flowering aerial part of peppermint by gc and gcms. Materials and methods selection of plant the plant neem azadirachta indica was selected for study. It was found that most plant extracts studied had antibacterial and antifungal activities.
1094 301 268 730 1494 535 309 622 1060 668 275 1153 265 38 1469 1275 1198 1282 1433 1050 760 1583 289 947 168 1562 1437 581 1571 596 115 421 1386 1082 1399 1531 1491 563 905 858 609 874 1385 1149 1339