Extraction of plant latex is a complex emulsion of polymer micro particles in an aqueous medium. Antibacterial activity of oleander on certain grampositive and gramnegative bacteria was studied and considerable antimicrobial activity was found. The increased resistance of microorganisms to the currently used antimicrobials has lead to the evaluation of other agents that might have antimicrobial activity. Antimicrobial activity of some plant species used for the medical. Review article antimicrobial activity of plantfood byproducts. The increasing incidence of microorganisms becoming resistant to antibiotics has continuously become a scientific community concern.
Antimicrobial activity of selected medicinal plants against some selected. Green synthesis, characterization and antimicrobial activity of silver nanoparticles from plectranthus amboinicus plant extracts niveditha. Data on antimicrobial activity measure as a zone of inhibition of aqueous extracts of eleven plant species and two antibiotics on. In this study, we analyzed the chemical composition of essential oil from the flowering aerial part of peppermint by gc and gcms.
Evaluation of antimicrobial activity of different solvent. To determine antibacterial activity of water, oil and methanol extracts of guava psidium guajava, green tea camellia. Medicinal plants, traditional uses, phytochemical effects, antimicrobial activity. 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. Antimicrobial activity of some plant extracts against. In vitro antimicrobial activity of some medicinal plants. The antimicrobial activity and minimum inhibitory concentration mic of various plant extracts in different solvents such as ethanol 98%, hexane. The antimicrobial activity of plant extracts and phytochemicals was evaluated with antibiotic susceptible and resistant microorganisms. 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. 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. Numerous antimicrobial activities of the extracts, essential oils, and components of c. Antara sen department of botany, university of rajasthan, jaipur, india.
Antimicrobial activity and phytochemical analysis of. Sc student, department of biotechnology, nehru arts and science college, coimbatore associate professor, department of microbiology, nehru arts and science college, coimbatore abstract. For this study, only the antimicrobial activity of different secondary metabolite compounds from different plants will be discussed. Antimicrobial activity of ginger zingiber officinale. Antimicrobial activity of selected medicinal plants. A method frequently used to screen plant extracts for antimicrobial activity is the agar disc diffusion technique morris et al.
Mic value shows that these plant extracts have the least antimicrobial activity. Antimicrobial tests for the leaves stem and roots of the studied plants were carried out against the pure cultures of and escherichia coli. Peppermint with antiseptic and known healing properties is a plant from the labiatae family. Plant nametype of extract susceptible microorganism reference garcinia mangostana alpha. Some promising plants having antimicrobial activity against multidrug resistant strains. 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. Antibacterial and antifungal activities from leaf extracts. Priscilla adelaide naa agowa lovellantiaye 10397194 department of microbiology, university of ghana medical school. Studies on some plant extracts for their antimicrobial.
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. Antibacterial activity of medicinal plant extracts article pdf available in brazilian journal of microbiology 384. Therefore, the methanolic extracts from different parts of four medicinal plants used locally in folk medicine were evaluated for antimicrobial activity. Pdf in vitro antimicrobial activity of mangrove plant. Pdf medicinal plants and antimicrobial activity researchgate. Evaluating antimicrobial activity of aloe vera plant. Chloroform, butanol, ethyl acetate and nhexane extracts of these plants were used for antimicrobial screening.
The objectives of the study were to screen out selected medicinal plants of kohat for their antimicrobial activities. The antimicrobial activity may be due to a wide variety of secondary metabolites, such as tannins, terpenoids, alkaloids. 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. 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. Traditional herbalists used plants to treat infectious disease. Antimicrobial activity of leaves extract of plumbago. Evaluation of antibacterial activity of some traditionally. All the test organisms were screened for their antibacterial activity against leaf and bark extract of azadirachta indica by agar well diffusion method. The use of plant extracts with known antimicrobial properties, can be of great significance in therapeutic treatments. Antibacterial activity in vitro of medicinal plants.
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. Results of antimicrobial activity of the five plant extracts can suggested that s. Pdf antibacterial activity of important medicinal plants on human. The results obtained with pseudomonas aeruginosa was particularly interesting, since it was inhibited by clove, jambolan, pomegranate and thyme extracts. Antimicrobial activity of some indian medicinal plants ncbi. 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. Antioxidant, antihypertensive, antihyperglycemic, and antimicrobial. Its subdisciplines are virology study of viruses, bacteriology study of bacteria. Nutrient agar 20ml was dispensed into sterile universal bottles.
The introduction of alkylation has been proposed to alter the distribution ratio between the aqueous and the nonaqueous phases. Antimicrobial activity of medicinal plants against human. The development of new antimicrobial agents against resistant pathogens is increasing interest. Table 2 summarizes the results obtained and listed the only plant species that presented some activity against at least one microorganism. In vitro antimicrobial activity of mangrove plant sonneratia alba. Avoiding pitfalls in determining antimicrobial activity of.
These include antimicrobial, antifungal, anticancer and antiinflammatory activities. Each purified extracts were dissolved in dimethyl sulfoxide, sterilized by filtration using sintered glass filter, and stored at 4c. A wide range of medicinal plants extracts are used to treat several infections as they have potential antimicrobial activity. 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. The evaluation of antibacterial activity for different extracts of each plant was carried out using the disc diffusion method and determination of minimum. Phytochemical analysis of traditional medicinal plants and.
Bioactive aqueous extracts of twelve yucatecan plants. Antimicrobial activity of ginger zingiber officinale extracts 869 antibacterial assay filter paper discs 6mm diameter were prepared using a punch machine. Leaves of nine medicinal plant species with high antibacterial activity against escherichia coli were extracted with acetone and their minimal. Total extractives of four of the five plants examined showed activity against staphylococcus aureus, bacillus subtilis, escherichia coli and pseudomonas aeruginosa.
Its antimicrobial activity was evaluated against bacteria, fungi. With the introduction of variety of antimicrobials it became necessary to perform the antimicrobial susceptibility test. Antimicrobial activity of plant extract was considered to be good if its mic was less than 100. Antimicrobial activity of some medicinal plant extracts. Many focus on determining the antimicrobial activity of plant extracts found in folk medicine, essential oils or isolated compounds such as alkaloids, flavonoids. Antimicrobial activity of ethanolic punica granatum extract and its fractions showed a highly antibacterial activity against gram positive s. Some of these compounds were isolated or obtained by bioguided. Introduction medicinal plants are abundant source of antimicrobial molecules. 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. Antimicrobial activity of plant secondary metabolites. Table 2 mic of plant extracts against the microorganisms by micro dilution broth assay.
We have studied antimicrobial activity of rosemary extracts rosmarinus officinalis l. In vitro inhibition of bacterial endotoxin has been demonstrated by an unidentified component in. The antimicrobial potential of seventyseven extracts from twentyfour plants was screened against eight bacteria and four pathogenic fungi. Antimicrobial activity of some indian medicinal plants. The in vitro antimicrobial activity and the minimum inhibitory concentration. Antimicrobial activity an overview sciencedirect topics.
In this study, the antimicrobial activities of eight species plants, used for treatment of various diseases, were investigated. 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. The antimicrobial compounds produced by plants are active against plant and human. Medicinal plants constitute an effective source of antimicrobial natural products. Aloe vera gel is a bactericidal agent causing against pseudomonas aeruginosa and acemannan and cite this article. Many scientists around the world are performing research on plants to be able to discover possible antimicrobial compounds. 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. Medicinal plants, ethanol, methanol and aqueous extracts, human pathogens, antimicrobial activity. Secondly, the method used to assess antimicrobial activity, and the choice of test organisms, varies between publications janssen et al. 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.
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. Some common spices and plants with antimicrobial and. Antimicrobial activity of medicinal plants against human pathogenic bacteria 657 inflammatory properties of plants mahesh and satish, 2008. In addition, the evidences of the presence of antimicrobial biological activity reported in recent studies will be presented. Evaluation of antibacterial activity of some medicinal plants extracts. Antimicrobial activity and phytochemical analysis of calotropis gigantea root, latex extracts. Antimicrobial activity of polyphenolrich fractions from sida alba l. Antimicrobial activity of essential oils and other plant. Chemical composition and antimicrobial activity of. Antimicrobial activity of rosemary extracts rosmarinus. 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.
Deans aromatic and medicinal plant group, scottish agricultural college, auchincruive, south ayrshire, uk 7288799. Furthermore, the solvent used for the preparation may influence the extract contents and affect the antimicrobial activity. Preliminary studies have been conducted into the antibacterial activity of extracts from some local medicinal plants from the family connaraceae. Antimicrobial activity study of ethanolic extract of.
Evaluating antimicrobial activity of aloe vera plant extract in human life. Association of antibiotics and plant extracts showed synergistic antibacterial activity against antibioticresistant bacteria. The search for new antimicrobial natural products from plant materials is essential in order to curb the menace of multiple antibiotics resistant pathogens. A study of antimicrobial activity of few medicinal herbs. 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. It was found that most plant extracts studied had antibacterial and antifungal activities. Pdf antimicrobial activity of medicinal plant leaf extracts against. 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 antibacterial activity of extracts of nine plant species with good. Cinnamon extracts have been shown to exert in vitro activity against some common human pathogens and fungicidal activity against plant pathogens. Crude methanolic plant extracts typically have the highest concentration and highest number of flavonoids, and thereby the strongest antimicrobial activity dar et al.
1540 1201 710 367 1489 871 977 640 735 1015 191 1024 89 774 1431 115 1540 1305 641 770 652 1222 1021 455 166 1291 722 509 1007 513 550 1131 1438 1324 222 1044 916 1187 1489 964 525 557 573 758 294