IJSRST1738163 | Received : 15 Nov 2017 | Accepted : 09 Dec 2017 | November-December-2017 [(3)8: 688-704] © 2017 IJSRST | Volume 3 | Issue 8 | Print ISSN: 2395-6011 | Online ISSN: 2395-602X Themed Section: Science and Technology 688 Cynodon Dactylon (L.) Pers., Cow Dung, and Selected Plant Extracts Exhibit Antimicrobial Property Against Cariogenic Streptococcus Species Richa Sharma*, Shailja Singh Department of Agriculture, Food & Biotechnology, Faculty of Engineering &Technology, Jayoti Vidyapeeth Women’s University, Jaipur, Rajasthan, India. *Corresponding Author: Dr Richa Sharma, Assistant Professor, Department of Food & Biotechnology, Jayoti Vidyapeeth Women’s University, Jaipur, Rajasthan, India. ABSTRACT This study was carried out with an objective to access the hidden specific antimicrobial property of Cynodon dactylon (L.)Pers., Cow dung powder, Leaves of Achyranthes Aspera, Wheat and Rice plant extracts against pathogenic strain isolated from dental plaque of caries active and caries free mouth from total 500 subjects. In this study we examined and compared the effect of extracts from different selected sources. Extraction done by using solvent like ethanol, chloroform, methanol and water. The efficiency of extracts was studied and determined by applying different extract concentration onto the cultured bacteria strain using the disc diffusion method. Streptococcus sanguis and Streptococcus mitis were the most susceptible bacteria to all plant extracts as compared to S.mutans and Enterococci. The extracts showed significant activity against the investigated dental plaque strains, which is promising. Keywords: Selected Extracts, Organic Solvents, Streptococcus, Antimicrobial Activity. I. INTRODUCTION For control of micro infection and disease various synthetic drugs and chemical formation are currently in use but due to the problem of microbial drug resistance, new alternative synthetic drugs have been explored . Oral disease at present is a major health issue worldwide [1]. Microbial resistance to most of the antibiotic commonly used to treat oral infection (penicillin , cephalosporin, erythromycin , tetracycline, and derivatives and metronidazole) has been documented[3].The resistance of microorganism against the traditional antibiotics needs urgent attention for the development of the new drugs molecules. Cowdung is basically the reject of herbivores matter which is acted upon by symbiotic bacteria residing within the antimicrobial rumen. The resultant faced mattern is rich in minerals. Cow dung is comprised of organic matter including fibrous material that passed through the cow digestive system among other liquid digesta that has been left after the fermentation, absorption and filtration , then acidification , then absorbed again. Cowdung chemically composed of mostly Carbon,Nitrogen, Hydrogen, oxygen phosphorous etc. with salts,urea,mucus,as well as cellulose ,lignin and hemicellulose cow dung along with this essential minerals and substance they contain microflora like bacilli, lactobacilli and cocci.[5]. Cynadondactylon (L.) Peers is a type of perennial grass that possess great medicinal values in this study the antimicrobial active of the plant extract was investigated against streptococcus ` in developing country low income people such as farmer people of small isolate village and native communities use folk medicine for the treatment of common infection these plants are ingested as decoctions, teas and juice predation to treat respiration infections [1]. Achyranthes Aspera L.(family : Amaranthaceae), an erect and much branched diffuse herb is a medicinal plant, frequently found in tropical and warmer region as weed. Another important plant like rice and wheat plant they carry a huge incredible health beneficiary property . Wheat is the most common cereal available all over the world and is a even higher demand in recent years due to its abundant health benefits. Research has already proven that wheat is extremely beneficial for healthy living. It considered lower the heart disease, owing to its