ABSTRACT
Piper betel L. belongs to the family Piperaceae. It has been an important medicinal agent since ages in various traditional and folk systems of medicine. Leaves obtained from the local market were shade dried and powdered. Different solvents were used based on polarity to extract phytochemicals from this powder using a Soxhlet extractor and separated using rotary vacuum evaporator. Thin layer chromatography was run using different solvent systems in different ratios for identifying essential compounds of Piper betel and for standardizing the ratios at which better resolution of compounds taken place. Antimicrobial activities were tested on twelve bacterial and three fungal species. Also, anti fibrin activity was tested on erythrocytes by using the extracts obtained by the plant. The zone of inhibitions formed due to the anti microbial activity were measured and found that mixtures of ethyl acetate and ethanol were effective. The percentage of clot lysis was found to be appreciable for ethyl acetate extract of the Piper leaves.
ABSTRACT
Abstract: Background: Piper betel Linn is considered to possess important medicinal values. Leaves are considered more valuable part and was used in past for preventing halitosis. Essential oil obtained from leaves have been tried for antibacterial potential against various oral bacteria such as Streptococcous mutans, Actinomyces species and has demonstrated effective role in suppressing plaque formation. In addition essential oil obtained from leaves also exhibits anticancer properties because of antioxidant and anti-inflammatory potential. However available literature falls short in evaluating antibacterial potential of Piper betel essential oil against common periodontal pathogens- Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia. Present invitro study was conducted to evaluate antibacterial potential of Piper betel essential oil against previously mentioned periodontal pathogens by determination of minimum inhibitory concentrations (M.I.C).Antioxidant and Anti-inflammatory potential was also determined for the same. Methodology: Antibacterial potential was determined using Disc diffusion test and Broth Microdilution method. Antioxidant and anti-inflammatory potential was determined by measurement of superoxide dismutase (SOD) activity using riboflavin-NBT assay and detection of MMP-2 and MMP-9 by gelatin zymography method respectively. Results: Piper betel essential oil is an effective antibacterial activity against the tested periodontal pathogens along with antioxidant and anti-inflammatory potential. Conclusion: Piper betel essential oil possesses effective antibacterial, antioxidant and anti-inflammatory potential and could be used effectively in formulation of oral health care product.
ABSTRACT
Microbial colonization as biofilm is one of the reasons for the emergence of drug resistant strains. In the oral cavity, drug resistant strains limit the efficacy of oral hygiene practices. Enterococcus faecalis and Staphylococcus aureus have been reported as drug resistant bacteria and producing oral biofilms in oral cavity. In this study we demonstrate the efficacy of aqueous extract of Azadirachta indica, Mangifera indica, Piper betel and Pepper nigrum for antibiofilm activity against E. faecalis and S. aureus. The aqueous extracts were obtained by cold percolation method. The antibiofilm activity of plants extract was evaluated at 30, 15 and 7.5 mg/ml concentration. The percentage yield of extract was maximum in P. nigrum. The aqueous extract of A. indica significantly suppressed E. faecalis and S. aureus biofilm at 7.5 mg/ml at p<0.01 and p<0.001 significance level. P. betel significantly (p<0.001) disintegrated the E. faecalis biofilm at 30 mg/ml and S. aureus at 15 mg/ml (p<0.01). P. nigrum disintegrated E. faecalis and S. aureus biofilm significantly (p<0.05 and p<0.001) at 30 and 15 mg/ml respectively. M. indica significantly (p<0.05) suppressed S. aureus biofilm at 30 mg/ml. These results clearly demonstrate the antibiofilm activity of plants extract against oral pathogens.
ABSTRACT
<p><b>OBJECTIVE</b>To examine the anti-bacterial activity of leaf extracts of Morus alba L. (Moraceae) and Piper betel L. (Piperaceae), and seed extracts of Bombax ceiba L. (Borabacaceae).</p><p><b>METHODS</b>We have partially purified plant extracts by solvent extraction method, and evaluated the effect of individual fractions on bacterial growth using Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus) bacterial strains.</p><p><b>RESULTS</b>Compared with Morus and Bombax fractions, Piper fractions showed significant growth inhibition on all the three types of bacteria studied. The EtOAc-hexane fractions of Piper leaves exhibited significant anti-bacterial activity with minimum inhibitory concentrations (MIC) of 50 µg/mL culture against both gram-positive and gram-negative bacteria. The EtOAc-fractions I, II, and IV inhibited bacterial colony formation on soft agar in addition to growth inhibition. A combination treatment of piper fractions with ampicillin resulted in significant growth inhibition in E. coli and P. aeruginosa, and combination with anticancer drug geldanamycin (2µg/mL) showed selective growth inhibition against P. aeruginosa and S. aureus. Three major compounds, i.e., eugenol, 3-hexene-ol and stigmasterol, were primarily identified from Piper betel leaf extractions. Among the individual compounds, eugenol treatment showed improved growth inhibition compared with stigmasterol and 3-hexene-ol.</p><p><b>CONCLUSIONS</b>We are reporting potential anti-bacterial compounds from Piper betel against both gram-positive and gram-negative bacteria either alone or in combination with drug treatment.</p>