Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 www.iiste.org Antimicrobial activity of Some Ethno-medicinal Plants used by Baiga Tribes from Amarkantak, India Jitendra Malviya1* Vaibhavi Joshi2 Kiran Singh3 1. Department of Biotechnology , Indira Gandhi National Tribal University ,Amarkantak M.P. 2. Department of Microbiology , Barkatullah University , Bhopal M.P. * E-mail of the corresponding author: jitmalviya123@gmail.com Abstract Antimicrobial activity of 05 ethnomedicinal plants extracts were evaluated against six bacterial strains Staphylococcus aureus , Niesseria gonorrohae , Pseudomonas aeruginosa, Escherichia coli Streptococcus pyogenes Bacillus subtilis. The collected ethnomedicinal plant were used in folk medicine in the treatment of diuretic stomachache , urinary tract, piles ,high fever , leprosy , ulcers, sexual diseases like gonorrhea and spermatorrhoea, dogbite ,snakebite, skin diseases, respiratory problems asthma , bronchitis, nervous diseases and blood purification. Plants were collected from mekal hills, sonmura ,mai ki bagi, sammbhudhara ,laxmandhara , panchdhara ,dense vegetative forest ,dense rain isolated eco-system, remote valleys and islands and the ethnomedicinal data were gathered from traditional healers who inhabit the study area. The traditional, chemosystematics and methanol extract were obtained by maceration method with antimicrobial activity was found using disc diffusion method phytochemical anaylysis, Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). All microorganism were obtained from (ATCC), American type culture collection.The result indicate that out of 05 plants exhibited antimicrobial activity against one or more of the tested microorganism we observed that extract concentrations spanning from 25 µg/ml to 2 mg/ml or even 40 mg/ml. Concentration of alkaloids, carbohydrates, flavonoids, saponins, terpens steroids associated to antioxidant activities and thus have curative properties. MIC and MBC for all 5 crude extracts (72%) showed positive results against bacterial strains.This study evaluate the antimicrobial ,phytochemical and Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) activity of the some ethnomedicinal plants used in folkoric medicine compared to all test showed significant activity against tested microorganism . This study also showed that Selaginella bryopteris (Amarbatoooti Sanjivini), Lygodium flexuousm (Kalijar) Adiantum philippense (Kalijhant), Drypteris eochleata (Jatashankari), Tectacria coadunate (Jatamasi) could be potential sources of new antimicrobial agents. Keywords: key words, ethnomedicinal plant, Antimicrobial, Phytochemical,diseases 1. Introduction More than 80% of the world’s population uses natural medicines and depends on medicinal plants for health care. In recent years, the growing demand for herbal products has led to a quantum jump in volume of plant materials traded within and across the countries. At present, 90% collection of herbal raw drugs used in the manufacture of Ayurveda, Siddha, Unani, and Homeopathy systems of medicine is largely from the wild out of which 70% collection involves destructive harvesting. Due to this spurt, medicinal plants are being overexploited and many of them are pushed to the brink of extinction. Many medicinal plants are highly sensitive to the level of harvest and fragility of the ecosystem (Pandey A K et al. 2010). Amarkantak is one of the world’s focuses for conservation located at 22.67°N 81.75°E. It has an average elevation of 1048 metres (3438 ft) from sea level this biomass should be studied in terms of 19 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 www.iiste.org pharmacological or biological activity. Approximately 40% of the plants found in the world have been submitted to pharmacological or biological test, and a substantial number of new antibiotics introduced on the market are obtained from natural or semi synthetic resources. The systematic screening of antibacterial plant extracts represents a continuous effort to find new compounds with the potential to act against multi-resistant bacteria. The temperate climate and the equitable distribution of rain make Amarkantak an ideal plateau for dense vegetation cover 21 pteridophytes 7 of these species were new for Central India and 14 for Madhya Pradesh (Khare P B 1989 and Saxena O P 1970). In isolated eco-system, such as remote valleys and islands, there is an extremely wide variety of floristic genera, but with the proportion of species to genera being very small. This is because each genus is unique to itself and does not proliferate and subdivide into many species. The eco-system of Amarkantak is truly unique, closely resembling that of isolated valleys or islands, because whereas the proportion of species genera is 13:1 in the world, in India it is 7:1 and in Amarkantak it is 15:1. This makes every genus in Amarkantak of great medicinal importance because if a particular plant becomes extinct the genus itself will die because it does not live through any of its variant species are now gravely endangered, especially because it is highly localised around Amarkantak, and it requires total protection. The region is tribal dominant and tribes are Gonds, Bharia, Bhils and Baiga’s they are dependent on forest products for their survival they used their traditional knowledge and indigenous systems of medicine for the treatment of various diseases (Sweta Singh et al. 2005, Dixit R D 1947). Plants used for traditional medicine contain a wide range of substances that can be used to treat chronic as well as infectious diseases. A vast knowledge of how to use the plants against different illnesses may be expected to have accumulated in areas where the use of plants is still of great importance. The medicinal value of plants lies in some chemical substances that produce a definite physiological action on the human body (Kloucek P et al. 2005). The most important of these bioactive compounds of plants are alkaloids, flavanoids, tannins and phenolic compounds (Sandhya B et al. 2006). Rural communities in particular baiga tribes of Amarkantak depends on plant resources,claim that their medicine is cheaper and more effective than modern medicine. The reports on the use of plants in traditional healing through tribes interview, discussion, personal contacts and keen observations i.e. Selaginella bryopteris, (Amarbatoooti Sanjivini;used for gonorrhea and venereal diseases) Lygodium flexuousm,(Kalijar; leaves applied for piles, rheumatism, sprains, ulcers, cut wounds and scabies also cure gonorrheao ,spermetaorrhoea and menorrhagia ,spores cure high fever. ) Adiantum philippense (Kalijhant; uses for leprosy, dysentery, ulcers, asthma, bronchitis as well as dogbite and snakebite), Drypteris eochleata, ( Jatashankari ; rhizomes shows antifungal activity and used as antidote and also applied for cuts, wounds ,ulcers, blood purification) Tectacria coadunate (Jatamasi; used in -respiratory disorders). The principal aim of the present study was to screen extracts obtained from the Amarkantak forest for antibacterial activity against the phytochemical research based on ethnopharmacological informations is generally considered an effective approach in the discovery of new anti-infective agents from higher plants (Kloucek P et al. 2005). The development of drug resistance in human pathogens against commonly used antibiotics has necessitated a search for new antimicrobial substances from other sources including plants (Erdogrul OT 2002) screening of medicinal plants for antimicrobial activities and phytochemicals is important for finding potential new compounds for therapeutic use. This paper reports the results of a survey that was done based on folk uses by traditional practitioners in Amarkantak Mekal Plataue along with bioassay test for antimicrobial activity. 2. Material and Methods 2.1 Plant collection and extract preparation All the plant were collected with the Amarkantak mekal plataue and Achanakmar biosphere region of Chhattisgarh five plants were used for organic and aqueous extracts were obtained from plants native to the tribal region. Plants were collected using a traditional5 and chemosystematic6 approach. Plant parts were collected according to the biomass availability. Plant material was dried and ground before being submitted 20 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 www.iiste.org to 24-h maceration with methanol: dichloromethane (1:1) followed by 24-h maceration with water, resulting in four extracts from each plant material viz, Selaginella bryopteris (Amarbatoooti Sanjivini), Lygodium flexuousm (Kalijar) Adiantum philippense (Kalijhant), Drypteris eochleata (Jatashankari), Tectacria coadunate (Jatamasi). 2.2 Phytochemical test Mayer test for Alkaloids take 0.135g of mercury bichloride, and 0.05g potassium iodide, are dissolved in 100 mL of water; this is used as a test for alkaloid, with which it gives a white precipitate. FeCl3 test for Tannin take FeCl3 solution and add 2 ml of extract. It gives deep blue color. This indicates the presence of tannin. Frothing test for Saponin take 300mg of extract and boil with 5ml water for 2 minutes. Mixture was cooled and mixed vigorously and left for 3 minutes. The formation of froth indicates the presence of saponin. Salkowski test for Steroids take 2ml of plant extract and add 2ml of chloroform and 2ml of conc. sulfuric acid. Shake it well. Chloroform layer appears red and acid layer shows yellow fluorescence. Sodium hydroxide test for flavonoids addition of increasing amount of sodium hydroxide to the residue shows yellow coloration which decolorizes after the addition of acid ( Turnidge JD et al. 2003). Benedicts's test for Carbohydrates add 1 ml of the solution to be tested to 5 ml of Benedict's solution, and shake each tube. Place the tube in a boiling water bath and heat for 3 minutes. Remove the tubes from the heat and allow them to cool. Formation of a green, red, or yellow precipitate is a positive test for reducing sugars (Skene et al. 2006, Andrews, J M 2001 and Policegoudr RS et al. 2007). 2.3 Antimicrobial assay Broth microdilution method was used to screen the 5 plant extracts. The inoculums was prepared at the concentration of 10-2 CFU/ml, starting from a 0.5 McFarland (or 108 CFU/ml) prepared from fresh colonies of bacteria as described below7. Staphylococcus aureus, Niesseria gonorrohae, Pseudomonas aeruginosa, Escherichia coli Streptococcus pyogenes Bacillus subtilis were the bacterial strains tested (HiMedia Laboratories Pvt. Limited Mumbai). The bacterial inoculum of each was obtained from fresh colonies grown on Mueller Hinton agar plates. Each strain was inoculated into 5 ml of Muellen Hinton broth in order to obtain a concentration of 1.5 x 108 CFU/ml. The inoculums were then diluted to 1.5 x 102 CFU/ml. One hundred and ninety microliters of this suspension was transferred to each microplate well. Ten microliters of each extract solution was added to the microplate wells and incubated at 35ºC for 18 to 20 h. Extracts were prepared to 20 times the desired test concentration (2 mg/ml) in water or 50% DMSO solution. The extracts were screened at a concentration of 100 µg/ml. Extracts that showed inhibitory activity at this concentration were submitted to a subculture of the broth media in Mueller Hinton agar (HiMedia Laboratories Pvt. Limited Mumbai ) in order to evaluate bacterial growth (Macfoy C A et al. 1990, Maikere-Faniyo R et al. 1989, Biavatti MW et al. 2001, Alves TM et al . 2000, Gnan SO et al. 1999 and Nakamura CV et al . 1999). 2.4 Determination of minimal inhibitory concentration and minimal bactericidal concentration Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) were determined for the extracts that showed total growth inhibition using the protocol described above. Extract concentrations of 10 to 100 µg/ml in steps of 10 µg were evaluated. The concentration at which there was no visually detectable bacterial growth was taken as the MIC, and the concentration at which there was no bacterial growth after inoculation in Mueller-Hinton agar was taken as the MBC (Eloff JN 1998). 3. Results The result of phytochemical screening is presented in (Table 1.) this reveals moderate concentration of alkaloids, carbohydrates, flavonoids, saponins, terpens and steroids some of which chemical compounds have been associated to antioxidant activities and thus have curative properties. Bacterial growth inhibition was confirmed after inoculation in Mueller-Hinton agar. Many extracts showed some degree of inhibition of bacterial growth at concentrations of 100 µg/ml, represented by “++”. The MIC and MBC of these extracts are currently being obtained. (Table 2) lists the five plant extracts that showed antibacterial activity against Niesseria gonorrohae ATCC 43069 , Staphylococcus aureus ATCC BAA 1026 , Pseudomonas 21 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 www.iiste.org aeruginosa ATCC 9027 (HiMedia Laboratories Pvt. Limited Mumbai )and their respective MIC and MBC. (Eloff JN 1998 and Suffredini IB et al. 2002) 4. Discussion Plant extracts have been studied against bacteria for years, but in a more intensified way in the last three decades. During this period, a lot of antimicrobial screening evaluations have been published based on the traditional use of Chinese, African, and Asian plant drugs (9-15). During the late 1990’s, a large number of manuscripts describing methodologies of screening took part and resulted in more than 30 articles representing antibacterial extracts obtained from Asian and African native plants, but only a few studies relating antibacterial activity of Amarkantak plant extracts were found. Amarkantak is home to more than 20% of the world’s biodiversity and only a few species have been submitted to any sort of large-scale biological screening. We collected a substantial amount of information about the antimicrobial activity of 5 Amarkantak plant extracts which have been collected. In order to establish the extract concentrations to be used during the screening, we observed that extract concentrations spanning from 25 µg/ml ( Eloff JN 1998) to 2 mg/ml(Loganga Otshudi A et al. 2000) or even 40 mg/m (Gnan SO et al. 1999) have been used. We screened the crude extracts using a concentration of 100 µg/ml (Suffredini IB et al. 2002). Such concentration is nowadays considered the proper concentration an antimicrobial extract should present (Table 3). The dilution test is a very precise technique that permits us to work with such a low concentration. Only 3 of 5 extracts showed bactericidal activity: extract Selaginella bryopteris, Lygodium flexuousm against N. gonorrhea Lygodium flexuousm against S. aureuas and Adiantum philippense ,Drypteris eochleata, Tectacria coadunate against P.aeugoginosa, Several crude extracts apparently inhibited bacterial growth. Among them, we are currently determining the MIC and MBC for all 5 crude extracts (72%) showed positive results against S. aureus, N. gonorrhea, P. aeruginosa. Extract (MIC and MBC), obtained from the stem of a Selaginella bryopteris, Lygodium flexuousm plant, showed antibacterial activity against N. gonorrhea (MIC = 160 and 140 µg/ml respectively; MBC = 180 and 170 µg/ml). Extract Adiantum philippense ,Drypteris eochleata, Tectacria coadunate (MIC = 90 ,80,60 µg/ml; MBC = 140 , 80 ,70 µg/ml respectively ), obtained from the stem of a plant, showed activity against P. auroginosa. The three active extracts are going to be bioguide fractionated in order to identify their active substances as well as the remaining extracts, whose MICs were ≤500 µg/ml (Kim HK et al.1970, De Tommasi N et al.1993 and Hamilton-Miller JM et al. 1995). All the species have been studied phytochemically and biologically, and beta-sitosterol, betulinic acid and sericic acid have been isolated from their stem bark extracts. (Hess SC et al. 1999). These substances have shown antibacterial activity against P.auroginosa and S. aureus. It is a matter of major national interest to study the potential of Amarkantak forests in offering new lead antibacterial compounds that can be further synthesized and have their activity improved. Thus, we strongly hope to contribute to the conservation and protection of the biodiversity of our forests and to the development of the Amarkantak community as a whole. Further phytochemical studies are required to determine the types of compounds responsible for the antibacterial effects of these species. The results also indicate that scientific studies carried out on medicinal plants having traditional claims of effectiveness might warrant fruitful results. Several plants used by Baiga tribe exhibit some degree of antibacterial activity towards gram-positive bacteria such as, Bacillus subtilis, Staphylococcus aureus and Staphylococcus epidermidis. These plants could serve as useful sources for new antimicrobial agents. References 1. Pandey A. K., Yadav swati. (2010) Variation in gymnemic acid content and non-destructive harvesting of Gymnema sylvestre (Gudmar) Pharmacognosy Res. Sep-Oct; 2(5): 309–312. 2. Khare P B. (1989).Threatened ferns in Amarkantak. Indian fern .J, 6 (56-59) 22 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. www.iiste.org Saxena O P. (1970). The flora of Amarkantak (Madhya Pradesh ) Bull, Bot Surv India 12 (14)),37-66. Sweta Singh et.al .(2005) Ethnomedicinal uses of pteridophytes of Amarkantak , Madhya Pradesh, Indian Journal of Traditional Knowledge. Vol 4 (4),October pp.392-395 Dixit R D. (1947). Fern a much neglected group of medicinal plants. I, J Res. Indian Med,9 (4),59-68 (1947) Fakeye TO., Itiola OA., Odelola HA., (2000). Evaluation of the antimi-ethnomedicinal plants for antibacterial activity. Journal of Ethnocrobial property of the stem bark of Picralima nitida (Apocynaceae) pharmacology, 15: 231-259. Perez C., Anesini C. (1994). In vitro antibacterial activity of Argentine folk medicinal plants against Salmonella typhi. Journal of Ethnopharmacology, 44: 41-46 Macfoy C.A., Cline EI. (1990) .In vitro antibacterial activities of three plants used in traditional medicine in Sierra Leone. Journal of Ethnopharmacology, 28: 323-327 Maikere-Faniyo R., Van Puyvelde L., Mutwewingabo A., Habiyaremye FX. (1989) Study of Rwandese medicinal plants used in thetreatment of diarrhoea I. Journal of Ethnopharmacology, 26: 101- 109 Biavatti MW., Vieira PC,. da Silva MFG., Fernandes JB., Albuquerque S., Magalhaes CM., Pagnocca FC. (2001). Chemistry and bioactivity of Raulinoa echinata Cowan, an endemic Amarkantak Rutaceae species.Phytomedicine, 8: 121-124. Alves TM., Silva AF., Brandao M., Grandi TS., Smania E., Smania Junior A., Zani CL. (2000). Biological screening of Amarkantak medicinal plants Memórias do Instituto Oswaldo Cruz, 95: 367-373. Gnan SO., Demello M. (1999). Inhibition of Staphylococcus aureus by aqueous goiaba extracts. Journal of Ethnopharmacology, 68: 103-108 Nakamura CV., Ueda-Nakamura T., Bando E., Melo AF., Cortez DA., Dias Filho BP. (1999). Antibacterial activity of Ocimum gratissimum L. essential oil. Memórias do Instituto Oswaldo Cruz, 94: 675-678. Eloff JN. (1998). Sensitive and quick microplate method to determne the minimal inhibitory concentration of plant extracts for bacteria. Planta Medica, 64: 711-713 Loganga Otshudi A., Foriers A., Vercruysse A., van Zeebroeck A., Lauwers S. (2000) In vitro antimicrobial activity of six medicinal plants traditionally used for the treatment of dysentery and diarrhea in Democratic Republic of Congo (DRC). Phytomedicine,7:167-172 Suffredini IB., Bacchi EM., Sakuda TMK., Ohara MT., Younes RN., Varella AD. (2002). Antibacterial activity of Apocynaceae extracts and MIC of Tabernaemontana angulata stem organic extract. RevistaBrasileira de Ciências Farmacêuticas, 38: 89-94. HessSC., Brum RL., Honda NK., Cruz AB., Moretto E., Cruz RB.,Messana I., Ferrari F., Cechinel Filho V., Yunes RA. (1995). Antibacterial activity and phytochemical analysis of Vochysia divergens (Vochysiaceae). Journal of Ethnopharmacology, 47: 97-100 Kim HK., Farnsworth NR., Fong HH., Blomster RN., persinos GJ. (1970) Biological and phytochemical evaluation of plants. VII. Isolation and identification of a tumor inhibitor from Wallenia yunquensis (Myrsinaceae) as Mysine-saponin. Lloydia, 33: 30-35 19. De Tommasi N., Piacente S., De Simone F., Pizza C., Zhou ZL. (1993). Characterization of three new triterpenoid saponins from Ardisia japonica. Journal of Natural Products, 56: 1669-1675. 20. Hamilton-Miller JM. (1995). "Antimicrobial properties of tea (Camellia sinensis L.)". Antimicrob. Agents Chemother. 39 (11): 2375–7 21. Skene, Caroline D., Philip Sutton. (2006). "Saponin-adjuvanted particulate vaccines for clinical use". Methods 40 (1): 53–9. doi:10.1016/j.ymeth.2006.05.019. 22. Andrews, J. M. (2001). Determination of minimum inhibitory concentrations. Journal of Antimicrobial Chemotherapy. 48 (Suppl. 1):5-16, 23 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 www.iiste.org 23. Turnidge JD., Ferraro MJ., Jorgensen JH. (2003). Susceptibility Test Methods: General consideration. American society of clinical Microbiology .p 1103, 24. PolicegoudrR.S., Channe Gowda D., Aradhya S.M. (2007) Isolation and characterization of anti-oxidant and anti-bacterial compound from mango-ginger (Curcuma amada Roxb) rhizome. Journal of Chromatography B, In press; 25. Kloucek P., Polesny Z., Svobodova B., Vlkova E., Kokoska L. (2005). Antibacterial screening of some Peruvian medicinal plants used in Callería District. Journal of Ethnopharmacology , 99:309-312. PubMed Abstract | Publisher Full Text 26. Erdogrul OT (2002). Antibacterial activities of some plant extracts used in folk medicine. Pharmaceutical Biology 2002, 40:269-273. PubMed Abstract | Publisher Full Text 27. Sandhya B., Thomas S., Isabel W., Shenbagarathai R. (2006). Ethnomedicinal plants used by the valaiyan community of Piranmalai hills (Reserved forest), Tamil Nadu, India – A pilot study.African journal of Traditional Complementary and Alternative Medicines , 3:101-114. 24 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 Table No.1. www.iiste.org Amarkantak flora are Ethnomedicinaly used by local tribes. S.No. Botanical Name/Family Natural habitat collection site 1. Selaginella bryopteris (L.)Baker Heavy rocks boulders , deep forest Forest Amarkantak Panchdhara (Selaginellacea) Local Name: Sanjivini Amarkantak Lygodium flexuousm (L) Sw. (Lygodiaceae) Grow on Bushes and trees, Sandy Soils 2. Plants parts used of Adiantum philippense (L) Adiantaceae Local Under moist condition , Low Name:Kalijhant mountainous region Paste of leaves used in gonorrhea, spermatorrhoea, leucorrhoea, diuretic, stomachache, urinary tract inflammation in children. Tobacco Forest of Amarkantak Mai ki Bagia Local Name :Kalijar 3. Leaves dried plant with Ethnomedicinal uses Forest of Amarkantak near Sambhudhara Stem, Rhizome leaves, Antibacterial property. Boiled fronds used for Carbuncles, rheumatism ,sprains, scabies ulcers and cuts wounds. spores Extract of stem and rhizome is taken for curing sexual disease like gonorrhoea and spermatorrhoea. Fresh leaves extract for piles. Spores cure high fever. Rhizomes, leaves Fronds extract for fever , asthma , bronchitis ,dysentery ,epileptic fits ,leprosy ulcers and erysipelas. Powder of rhizome as an antitode against dogbite and snakebite. Leaves extract applied for stomach for clear and early release of urine. Died rhizome for women during menstrual period sterility. 4. Drypteris eochleata D.C. Stream sides,Amanala, Amanala Laxmandhara Rhizome, Leaves Rhizome as Antifungal property ,used as antitode. Extarct of dried rhizome is given in epilepsy and (Ham.ex.D .Don ) C. chr. Dryopteridaceae laterite soils Panchdhara stems stipe leprosy . Paste of fresh rhizome ,stem stipe is applied for cuts, wounds, ulcers, swelling and pains. Fresh Paste and rhizome and fronds used in Local Name:Jatashankar i 5. snakebite and dogbite. The decoction of dried rhizome tem stipe used for blood purification. Tectacria coadunate (Wall.ex.Hook.et Rocks Crevices boulders in moist places along the grev.) C.chr (Tectariaceae) Local Name: stream Sonmura Bagia Mai ki Rhizome Leaves Anthelmintic, fresh rhizome and fronds paste is used in insect bites or getting relief in centipede bite. Fresh rhizome and stipe in stomach pain, Gastrointestinal disorders of worm in children .Extraxction of dried rhizome ,stem and stipe is used in respiratory disorders like cold,cough ,asthma and bronchitis. Jatamasi 25 Advances in Life Science and Technology ISSN 2224-7181 (Paper) ISSN 2225-062X (Online) Vol 4, 2012 Table No. 2. Phytochemical screening of the given plant S.No. Contituents Leaves Extracts 1. Alkaloids Meyer’s, test ++ 2. Carbohydrates, Benedict’s test ++ 3. Flavonids ,Sodium hydroxide test ++ 4. Saponins , Frothing test ++ 5. Steroids ,Salkowski test ++ 6. Tannins ,FeCl3 test + www.iiste.org Rhizome stem Roots + ++ + ++ ++ ++ ++ + + + ++ ++ ++ ++ ++ + + + Key (- )= Negative (absent),(+) = Positive (Slightly present) (++) = Positive (moderately present) Table No. 3. Antimicrobial activity of plants extract from the Amarkantak forest that showed strong activity, and their corresponding minimal inhibitory and minimal bactericidal concentrations. Lygodium Adiantum Drypteris Tectacria Plants Samples Selaginella flexuousm philippense eochleata coadunate bryopteris (Kalijhant) (Jatashankari) (Jatamasi) (Amarbatoooti (Kalijar) Sanjivini) Number of extracts evaluated 4 4 4 4 4 +ve -ve -ve -ve Extract classified as ++++ +ve against Niesseria gonorrohae ATCC 43069 Extract classified as ++++ -ve +ve -ve -ve -ve against Staphylococcus aureus ATCC BAA 1026 Extract classified as ++++ -ve -ve +ve +ve +ve against Pseudomonas aeruginosa ATCC 9027 Minimal inhibitory 160 140 90 80 60 concentration (µg/ml) Minimal Bactericidal 180 170 140 80 70 concentration (µg/ml) Activity was measured by the micro dilution broth assay ++++ indicate that the extracts caused total growth inhibition 26 International Journals Call for Paper The IISTE, a U.S. publisher, is currently hosting the academic journals listed below. 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