Dr. Natchimuthu Karmegam
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Dr. Natchimuthu Karmegam

Assistant Professor
Government Arts College, India


Highest Degree
Ph.D. in Vermitechnology from Gandhigram Rural Institute, India

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Area of Interest:

Plant and Soil Sciences
100%
Vermitechnology
62%
Medicinal Plant
90%
Plant Biotechnology
75%
Plant Tissue Culture
55%

Research Publications in Numbers

Books
4
Chapters
2
Articles
118
Abstracts
1

Selected Publications

  1. Rajadurai, M., N. Karmegam, S. Kannan, A. Yuvaraj and R. Thangaraj, 2022. Vermiremediation of engine oil contaminated soil employing indigenous earthworms, Drawida modesta and Lampito mauritii. J. Environ. Manage., Vol. 301. 10.1016/j.jenvman.2021.113849.
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  2. Yuvaraj, A., R. Thangaraj, N. Karmegam, B. Ravindran, S.W. Chang, M.K. Awasthi and S. Kannan, 2021. Activation of biochar through exoenzymes prompted by earthworms for vermibiochar production: a viable resource recovery option for heavy metal contaminated soils and water. Chemosphere, 10.1016/j.chemosphere.2021.130458.
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  3. Yuvaraj, A., R. Thangaraj and N. Karmegam, 2021. Bio-management of textile industrial wastewater sludge using earthworms: a doable strategy toward sustainable environment. In: Handbook of Solid Waste Management, Baskar, C., S. Ramakrishna, S. Baskar, R. Sharma, A. Chinnappan and R. Sehrawat, Springer Singapore Switzerland, ISBN-13 978-981-15-7525-9, pp 1-19.
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  4. Yuvaraj, A., M. Govarthanan, N. Karmegam, M. Biruntha and D.S. Kumar et al., 2021. Metallothionein dependent-detoxification of heavy metals in the agricultural field soil of industrial area: earthworm as field experimental model system. Chemosphere, 10.1016/j.chemosphere.2020.129240.
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  5. Ravindran, B., N. Karmegam, A. Yuvaraj, R. Thangaraj and S.W. Chang et al., 2021. Cleaner production of agriculturally valuable benignant materials from industry generated bio-wastes: a review. Bioresour. Technol., 10.1016/j.biortech.2020.124281.
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  6. Ravindran, B., M.K. Awasthi, N. Karmegam, S.W. Chang and D.K. Chaudhary et al., 2021. Co-composting of food waste and swine manure augmenting biochar and salts: nutrient dynamics, gaseous emissions and microbial activity. Bioresour. Technol., 10.1016/j.biortech.2021.126300.
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  7. Priyadharshini, S.D., P.S. Babu, S. Manikandan, R. Subbaiya and M. Govarthanan et al. 2021. Phycoremediation of Wastewater for Pollutant Removal: A Green Approach to Environmental Protection and Long-Term Remediation. Environ. Pollut. 10.1016/j.envpol.2021.117989.
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  8. Kumar, S.D., M. Yasasve, G. Karthigadevi, M. Aashabharathi, R. Subbaiya, N. Karmegam and M. Govarthanan, 2021. Efficiency of microbial fuel cells in the treatment and energy recovery from food wastes: Trends and applications - A review. Chemosphere, Vol. 287. 10.1016/j.chemosphere.2021.132439.
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  9. Jeyaprakasam, A., B. Muniyandi, A.J.P. James, N. Karmegam and K. Ponnuchamy, 2021. Assessment of earthworm diversity and pesticide toxicity in Eudrilus eugeniae. Environ. Chem. Ecotoxicol., 3: 23-30.
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  10. Jayakumar, M., N. Karmegam, M.P. Gundupalli, K.B. Gebeyehu and B.T. Asfaw et al., 2021. Heterogeneous base catalysts: synthesis and application for biodiesel production-a review. Bioresour. Technol., 10.1016/j.biortech.2021.125054.
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  11. Jayakumar, M., K.B. Gebeyehu, K.V. Selvakumar, S. Parvathy, W. Kim and N. Karmegam, 2021. Waste ox bone based heterogeneous catalyst synthesis, characterization, utilization and reaction kinetics of biodiesel generation from Jatropha curcas oil. Chemosphere, Vol. 2021. 10.1016/j.chemosphere.2021.132534.
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  12. Jayakumar, M., A.N. Emana, R. Subbaiya, M. Ponraj and K.A. Kumar et al., 2021. Detoxification of coir pith through refined vermicomposting engaging Eudrilus eugeniae. Chemosphere, Vol. 2021. 10.1016/j.chemosphere.2021.132675.
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  13. Deepthi, M.P., P. Kathireswari, J. Rini, K. Saminathan and N. Karmegam, 2021. Vermitransformation of monogastric elephas maximus and ruminant bos taurus excrements into vermicompost using eudrilus eugeniae. Bioresour. Technol., 10.1016/j.biortech.2020.124302.
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  14. Chung, W.J., S.W. Chang, D.K. Chaudhary, J.D. Shin and H. Kim et al., 2021. Effect of biochar amendment on compost quality, gaseous emissions and pathogen reduction during in-vessel composting of chicken manure. Chemosphere, Vol. 273. 10.1016/j.chemosphere.2021.131129.
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  15. Yuvaraj, A., R. Thangaraj, B. Ravindran, S.W. Chang and N. Karmegam, 2020. Centrality of cattle solid wastes in vermicomposting technology – A cleaner resource recovery and biowaste recycling option for agricultural and environmental sustainability. Environ. Pollut., 10.1016/j.envpol.2020.115688.
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  16. Yuvaraj, A., N. Karmegam, B. Ravindran, S.W. Chang, M.K. Awasthi, S. Kannan and R. Thangaraj, 2020. Recycling of leather industrial sludge through vermitechnology for a cleaner environment—A review. Ind. Crops Prod., Vol. 155. 10.1016/j.indcrop.2020.112791.
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  17. Thangamani, R., L. Baskaran, M. Prakash and N. Karmegam, 2020. Effect of pre-composting on seed viability and subsequent vermicomposting of an invasive alien weed, Alternanthera ficoidea (L.) P. Beauv. Int. J. Curr. Res. Biosci. Plant Biol., 7: 37-45.
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  18. Thangamani, R., L. Baskaran and N. Karmegam, 2020. Alarming spread of invasive weeds: A qualitative assessment and scope for sustainable weed biomass utilization. Int. J. Curr. Res. Biosci. Plant Biol., 6: 20-25.
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  19. Sivagami, M., M. Selvambigai, U. Devan, A.A.J. Velangani, N. Karmegam, M. Biruntha, A. Arun, W. Kim, M. Govarthanan and P. Kumar, 2020. Extraction of microplastics from commonly used sea salts in India and their toxicological evaluation. Chemosphere, 10.1016/j.chemosphere.2020.128181.
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  20. Singh, A., N. Karmegam, G.S. Singh, T. Bhadauria and S.W. Chang et al., 2020. Earthworms and vermicompost: an eco-friendly approach for repaying nature’s debt. Environ. Geochem. Health., 10.1007/s10653-019-00510-4.
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  21. Rini, J., M.P. Deepthi, K. Saminathan, R.T. Narendhirakannan, N. Karmegam and P. Kathireswari, 2020. Nutrient recovery and vermicompost production from livestock solid wastes with epigeic earthworms. Bioresour. Technol., 10.1016/j.biortech.2020.123690.
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  22. Poornima, S., P. Divya, N. Karmegam, V. Karthik and R. Subbaiya, 2020. Aqueous two-phase partitioning and characterization of xylanase produced by Streptomyces geysiriensis from low cost lignocellulosic substrates. J. Biosci. Bioeng., 10.1016/j.jbiosc.2020.07.008.
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  23. Manikandan, S., N. Karmegam, R. Subbaiya, G.K. Devi, R. Arulvel, B. Ravindran and M.K. Awasthi, 2020. Emerging nano-structured innovative materials as adsorbents in wastewater treatment. Bioresour. Technol., 10.1016/j.biortech.2020.124394.
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  24. Karmegam, N., M. Jayakumar, M. Govarthanan, P. Kumar, B. Ravindran and M. Biruntha, 2020. Precomposting and green manure amendment for effective vermitransformation of hazardous coir industrial waste into enriched vermicompost. Biores. Technol., 10.1016/j.biortech.2020.124136.
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  25. Deepthi, M.P., S. Nivethitha, K. Saminathan, R.T. Narendhirakannan, N. Karmegam and P. Kathireswari, 2020. Effect of vermiwash prepared from livestock biowaste as vermiponics medium on the growth and biochemical indices of Amaranthus viridis L. Environ. Technol. Innovation, 10.1016/j.eti.2020.101300.
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  26. Balachandar, R., M. Prakash and N. Karmegam, 2020. Statistical optimization of culture conditions for the production of bioactive compounds by Streptomyces spp. isolated from vermicasts. Int. J. Curr. Res. Biosci. Plant Biol., 6: 1-7.
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  27. Balachandar, R., M. Biruntha, A. Yuvaraj, R. Thangaraj and R. Subbaiya et al., 2020. Earthworm intervened nutrient recovery and greener production of vermicompost from Ipomoea staphylina – An invasive weed with emerging environmental challenges. Chemosphere, Vol. 263. 10.1016/j.chemosphere.2020.128080.
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  28. Yuvaraj, A., N. Karmegam, S. Tripathi, S. Kannan and R. Thangaraj, 2019. Environment-friendly management of textile mill wastewater sludge using epigeic earthworms: Bioaccumulation of heavy metals and metallothionein production. J. Environ. Manage., Vol. 254, 10.1016/j.jenvman.2019.109813.
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  29. Karmegam, N., P. Vijayan, M. Prakash and J.A.J. Paul, 2019. Vermicomposting of paper industry sludge with cowdung and green manure plants using Eisenia fetida: A viable option for cleaner and enriched vermicompost production. J. Cleaner Prod., 228: 718-728.
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  30. Biruntha, M., P. Mariappan, B.K. Selvi, J.A.J. Paul and N. Karmegam, 2019. Vermiremediation of urban and agricultural biomass residues for nutrient recovery and vermifertilizer production. Waste Biomass. Valor., 10.1007/s12649-019-00899-0.
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  31. Biruntha, M., N. Karmegam, J. Archana, B.K. Selvi and J.A.J. Paul et al., 2019. Vermiconversion of biowastes with low-to-high C/N ratio into value added vermicompost. Bioresour. Technol., Vol. 297, 10.1016/j.biortech.2019.122398.
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  32. Balachandar, R., P. Gurumoorthy, N. Karmegam, H. Barabadi and R. Subbaiya et al., 2019. Plant-mediated synthesis, characterization and bactericidal potential of emerging silver nanoparticles using stem extract of Phyllanthus pinnatus: A recent advance in phytonanotechnology. J. Cluster Sci., 10.1007/s10876-019-01591-y.
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  33. Balachandar, R., N. Karmegam, R. Subbaiya, P. Boomi, D. Karthik and M. Saravanan, 2019. Optimization of culture medium for improved production of antimicrobial compounds by Amycolatopsis sp.-AS9 isolated from vermicasts. Biocatal. Agric. Biotechnol., Vol. 20. 10.1016/j.bcab.2019.101186.
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  34. Balachandar, R., L. Baskaran, A. Yuvaraj, R. Thangaraj and R. Subbaiya et al., 2019. Enriched pressmud vermicompost production with green manure plants using Eudrilus eugeniae. Bioresour. Technol., Vol. 299, 10.1016/j.biortech.2019.122578.
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  35. Ananthavalli, R., V. Ramadas, J.A.J. Paul, B.K. Selvi and N. Karmegam, 2019. Vermistabilization of seaweeds using an indigenous earthworm species, Perionyx excavates (Perrier). Ecol. Eng., 130: 23-31.
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  36. Ananthavalli, R., V Ramadas, J.A.J. Paul, B.K. Selvi and N. Karmegam, 2019. Seaweeds as bioresources for vermicompost production using the earthworm, Perionyx excavates (Perrier). Bioresour. Technol., 275: 394-401.
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  37. Yuvaraj, A., N. Karmegam and R. Thangaraj, 2018. Vermistabilization of paper mill sludge by an epigeic earthworm Perionyx excavates: Mitigation strategies for sustainable environmental management. Ecol. Eng., 120: 187-197.
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  38. Balachandar, R., N. Karmegam, M. Saravanan, R. Subbaiya and P. Gurumoorthy, 2018. Synthesis of bioactive compounds from vermicast isolated actinomycetes species and its antimicrobial activity against human pathogenic bacteria. Microbial. Pathog., 121: 155-165.
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  39. Balachandar, R., N. Karmegam and J. Praburaj, 2017. Identification of Bioactive Compounds from Ethyl Acetate Extracts of Actinomycetes Isolated from Vermicast Soil. In: Conference Proceedings on Life Science: Research, Practices and Application for Sustainable Development, Ponmurugan, P., V. Ramasubramanian and T. Marimuthu (Eds.)., MacMilan Publishers, USA., pp: 62-70.
  40. Shanmugam, S., S. Balamurugan, B. Raja, R. Nagaraj, K. Rajendran and N. Karmegam, 2016. Floral diversity of Vaigai river in Thiruppuvanam region of Sivagangai district, Tamil Nadu, Southern India. Int. J. Curr. Res. Biosci. Plant Biol., 33: 96-105.
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  41. Shanmugam, S., R. Nagaraj, S. Balamurugan, B. Raja, K. Rajendran and N. Karmegam, 2016. Floristic composition of weeds in coconut (Cocos nucifera L.) plantations of Sivagangai district, Tamil Nadu, Southern India. Int. J. Curr. Res. Biosci. Plant Biol., 3: 121-126.
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  42. Jeyanthi, V., J.A.J. Paul, B.K. Selvi, M. Biruntha and N. Karmegam, 2016. Coelomic fluid protein profiling and heavy metal accumulation of three earthworms after exposure to pesticide and metal stress. Int. J. Adv. Multidiscip. Res., 3: 84-91.
  43. Jeyanthi, V., J.A.J. Paul, B.K. Selvi and N. Karmegam, 2016. Comparative study of biochemical responses in three species of earthworms exposed to pesticide and metal contaminated soil. Environ. Process., 3: 167-178.
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  44. Balachandar, R., K.A. Kumar and N. Karmegam, 2016. GC-MS analysis of ethyl acetate extract of Sterptomyces species isolated from vermicast. Int. J. Pharma Bio Sci., 7: 416-419.
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  45. Karmegam, N., R. Nagaraj, S. Karuppusamy and M. Prakash, 2015. Biological and pharmacological activities of Andrographis spp.(Acanthaceae) distributed in southern Eastern Ghats, India. Int. J. Curr. Res. Biosci. Plant Biol., 24: 140-143.
  46. John Paul, J.A., B.K. Selvi and N. Karmegam, 2015. Biosynthesis of silver nanoparticles from Premna serratifolia L. leaf and its anticancer activity in CCl4-induced hepato-cancerous Swiss albino mice. Applied Nanosci., 5: 937-944.
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  47. Rajasekar, K., T. Daniel and N. Karmegam, 2012. Microbial enrichment of vermicompost. ISRN Soil Sci., Vol. 2012. 10.5402/2012/946079.
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  48. Prakash, M. and N. Karmegam, 2012. In-Vitro Antibacterial Activity of Certain Plant Extracts Against Plant Disease Causing Bacteria Isolated from Citrus Plant. Int. J. Curr. Microbiol. Appl. Sci., 1: 1-11.
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  49. Karmegam, N., M. Jayakumar and S. Karuppusamy, 2012. Synergistic Antibacterial activity of four medicinal plants collected from Dharapuram Taluk of Truppur District, South India. J. Plant Sci., 7: 32-38.
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  50. Karmegam, N. and K. Rajasekar, 2012. Enrichment of biogas slurry vermicompost with azotobacter chroococcum and bacillus megaterium. J. Envir. Sci. Technol., 5: 91-108.
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  51. Paul, J.A.J., N. Karmegam and T. Daniel, 2011. Municipal Solid Waste (MSW) vermicomposting with an epigeic earthworm, Perionyx ceylanensis Mich. Bioresour. Technol., 102: 6769-6773.
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  52. Sekar, K.R. and N. Karmegam, 2010. Earthworm casts as an alternate carrier material for biofertilizers: Assessment of endurance and viability of Azotobacter chroococcum, Bacillus megaterium and Rhizobium leguminosarum. Sci. Hortic., 124: 286-289.
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  53. Prakash, M. and N. Karmegam, 2010. Vermistabilization of pressmud using Perionyx ceylanensis Mich. Bioresour. Technol., 101: 8464-8468.
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  54. Prakash, M. and N. Karmegam, 2010. Dynamics of nutrients and microflora during vermicomposting of mango leaf litter (Mangifera indica) using Perionyx ceylanensis. Int. J. Global Environ. Issues, 10: 339-353.
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  55. Kale, R.D. and N. Karmegam, 2010. The role of earthworms in tropics with emphasis on Indian ecosystems. Applied Environ. Soil Sci., Vol. 2010 10.1155/2010/414356.
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  56. Sekar, K.R. and N. Karmegam, 2009. Suitability of vermicasts as carrier material for a biofertilizer, Azosprillum brasilense (MTCC 4036). Dyn. Soil Dyn. Plant, 3: 143-146.
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  57. Sekar, K.R. and N. Karmegam, 2009. Efficiency of the Earthworm, Eisenia fetida (Sav.) in vermistabiliation of silkworm litter mixed with leaf litter. Int. J. Applied Environ. Sci., 4: 481-486.
  58. Prakash, M., M. Jeyakumar and N. Karmegam, 2009. Vermistabiliation of paper mill sludge using the earthworm Perionyx ceylanensis: Influence on physico-chemical and microbiological status. Indian J. Applied Microbiol., 10: 20-25.
  59. Nagaraju, M, B. Kadalmani, N. Karmegam, K. Palanivel and K. Shyam, 2009. Effect of distillery effluent on root-knot nematode Meloidogne incognita in growth of tomato and brinjal. J. Chem. Pharm. Sci., 2: 207-211.
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  60. Karmegam, N. and T. Daniel, 2009. Investigating efficiency of Lampito mauritii (Kinberg) and Perionyx ceylanensis Michaelsen for vermicomposting of different types of organic substrates. The Environ., 29: 287-300.
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  61. Karmegam, N. and T. Daniel, 2009. Growth, reproductive biology and life cycle of the vermicomposting earthworm, Perionyx ceylanensis Mich. (Oligochaeta: Megascolecidae). Bioresour. Technol., 100: 4790-4796.
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  62. Karmegam, N. and T. Daniel, 2009. Effect of application of vermicasts as layering media for an ornamental plant, Codiaeum variegatum (L.) Bl. Dyn. Soil Dyn. Plant, 3: 100-104.
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  63. Jayakumar, M., V. Karthikeyan and N. Karmegam, 2009. Comparative studies on physico-chemical, microbiological and enzymatic activities of vermicasts of the earthworms, Eudrilus eugeniae, Lampito mauritii and Perionyx ceylanensis cultured in press mud. Int. J. Applied Agric. Res., 4: 75-85.
  64. Bharathiraja, B., J. Jayamuthunagai, M. Jayakumar and N. Karmegam, 2009. Biosynthesis of cellulose protein from cheaper substrates using mixed culture of Trichoderma reesei and Penicillium funiculosum-a novel approach. Int. J. Applied Bioeng., 3: 11-16.
  65. Prakash, M., M. Jayakumar and N. Karmegam, 2008. Physico-chemical characteristics and fungal flora in the casts of the earthworm, Perionyx ceylanensis Mich. Reared in Polyalthia longifolia leaf litter. J. Applied Sci. Res., 4: 53-57.
  66. Paul, J.A.J., M. Biruntha, K. Saravanan and N. Karmegam, 2008. Enhancement of microbial load by vermicomposting native earthworms, Perionyx ceylanensis and Perionyx excavates in different substrates. Indian J. Applied Microbiol., 8: 15-18.
  67. Murugaian, P., V. Ramamurthy and N. Karmegam, 2008. Protein conversion efficiency of Labeo rohita in different cultural conditions. Int. J. Applied Environ. Sci., 3: 57-64.
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  68. Murugaian, P., V. Ramamurthy and N. Karmegam, 2008. Hepatoprotective activity of Wedelia calendulacea L. against acute hepatotoxicity in rats. Res. J. Agric. Biol. Sci., 4: 685-687.
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  69. Murugaian, P., V. Ramamurthy and N. Karmegam, 2008. Effect of temperature on the behavioural and physiological responses of catfish, Mystus gulio (Hamilton). J. Applied Sci. Res., 4: 1454-1457.
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  70. Karmegam, N., S. Karuppusamy, M. Prakash, M. Jayakumar and K. Rajasekar, 2008. Antibacterial potency and synergistic effect of certain plant extracts against food-borne diarrheagenic bacteria. Int. J. Biomed. Pharm. Sci., 2: 88-93.
  71. Karmegam, N. and T. Daniel, 2008. Effect of vermicompost and chemical fertilizer on growth and yield of hyacinth bean, Lablab purpureus (L.) sweet. Dyn. Soil Dyn. Plant, 2: 77-81.
  72. Prakash, M., V. Karthikeyan and N. Karmegam, 2007. Bacteriological studies in the fish samples with special reference to Vibrio parahaemolyticus. J. Ecobiol., 20: 175-178.
  73. Prakash, M., K. Rajasekar and N. Karmegam, 2007. Prevalence of methicillin resistant Staphylococcus aureus in clinical samples collected from Kanchipuram Town, Tamil Nadu, South India. J. Applied Sci. Res., 3: 1705-1709.
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  74. Prakash, M., K. Rajasekar and N. Karmegam, 2007. Bacterial population of raw milk and their proteolytic and lipolytic activities. Res. J. Agric. Biol. Sci., 3: 848-851.
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  75. Karmegam, N. and T. Daniel, 2007. Effect of physico-chemical parameters on earthworm abundance: A quantitative approach. J. Applied Sci. Res., 3: 1369-1376.
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  76. Prakash, M., V. Karthikeyan, S. Karuppusamy and N. Karmegam, 2006. Synergistic activity of certain plant extracts against Methicillin resistant Staphylococcus aureus (MRSA). J. Ecotoxicol. Environ. Monit., 16: 387-389.
  77. Prakash, M., V. Karthikeyan and N. Karmegam, 2006. Determination of total counts of psychrotrophic bacteria and coliforms in milk samples. J. Ecotoxicol. Environ. Monit., 16: 291-296.
  78. Prakash, M., S.A. Kumar and N. Karmegam, 2006. Synergistic effect of selected medicinal plant extracts against certain bacteria. Indian J. Applied Microbiol., 6: 16-17.
  79. Paul, J.A.J., N. Karmegam and T. Daniel, 2005. Effect of worm population on biomass of Eudrilus eugeniae in municipal solid waste and the status of microorganisms. J. Ecobiol., 17: 567-570.
  80. Karuppusamy, S. and N. Kamegam, 2005. Screening of ethno medicinal plants of Dindigul District (South India), for antimicrobial activity. J. Ecobiol., 17: 455-460.
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