Mrs.N.Ravimannan

Mrs.N.Ravimannan
Senior Lecturer Gr.I
B.Sc. [Hons] (Jaffna), M.Phil (Peradeniya )
nravi@jfn.ac.lk
021-2229645, 021-2263656

  • MPhil (1997)
    Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka
    Board of Study: Food Science and Technology (Course work included)
    Research: Biochemistry
  • BSc (Honours) in Botany, Second class upper division
    Department of Botany, University of Jaffna, Sri Lanka

Undergraduate Teaching

  • Biochemistry
  • Food Science and Nutrition
  • Natural Vegetation types of Sri Lanka
  • Economic Botany
  • Food Toxins

Postgraduate Teaching

  • MSc in Environmental Management

Appointments/ University Positions

  • Temporary staff (1988-1991)
  • Lecturer in Botany (1991-1997)
  • Senior Lecturer Gr II In Botany (1997-2003)
  • Senior lecturer Gr I In Botany (2003 to date)
  • Head/Botany (1999-2011)
  • Member of the Life Science Board
  • Student counselor (2015-2016)
  • Academic advisor (2011-2016)

 

Research Interest

  • Biochemistry
  • Food Microbiology
  • Ecology

Chapter in book

Ravimannan, N. 2020. Storage of yeasts.  In: Current Research Trends in Biological Science Vol 4: p.55-59. Book Publisher International. India/UK.

Journal Papers

  1. R Arulanantham, Sevvel Pathmanathan, N Ravimannan, K Niranjan (2013). Alternative culture media for bacterial growth using different formulation of protein sources. J Nat Prod Plant Resour 2 (6), 697-700.
  2. Ravimannan, N., Arulanantham, R., Pathmanathan, S., & Niranjan, K. (2014). Alternative Culture Media For Fungal Growth Using Different Formulation Of Protein Sources. Annals of Biological Research, 5(1), 36-39.
  3. Sathiyaseelan, K. Niranjan and N.Ravimannan. (2015). Anatomical and antimicrobial screening of Cassia senna and Cassia obovata. International Journal of Management Science,7 (1), 38-43.
  4. Mekala uthayasooriyan, Sevvel Pathmanathan, Nirmala Ravimannan and Sutharshiny Sathyaruban. (2016). Formulation of alternative culture media for bacterial and fungal growth. Der Pharmacia Lettre, 8 (1):431-436
  5. Nirmala Ravimannan, Pathmanathan Sevvel, Selvaratnam Saarutharshan . (2016) Study on fungi associated with spoilage of bread. International Journal of Advanced Research in Biological Sciences, 3 (4): 165-167.
  6. Nirmala Ravimannan. (2016). Investigating alternative yeast storage methods, International Journal of Advanced Research in Biological Sciences, 3 (11): 109-111.
  7. Nirmala Ravimannan. (2016). Study on microbial profile of bread during storage. International Journal of Advanced Research in Biological Sciences, 3 (9): 60-63.
  8. Nirmala Ravimannan & Sevvel Pathmanathan. (2016). Soy Flour as Alternative Culture Media for Yeasts. Global Journal of Science Frontier Research: C Biological Science, 16 ( 3), 75-78.

  9. Ravimannan,  N. and Sepali, E. (2020).  Antibacterial activity of endophytic fungi isolated from mangroves of Jaffna peninsula, Sri Lanka. African Journal of Plant Science, 14(6), 243-247.

Research Abstracts presented at conferences

  1. Selvaratnam and S. Kandiah (1993). Some aspects of seed germination and seedling growth on Palmyrah palm. Proceedings of Jaffna Science Association.p3
  2. Nirmala Selvaratnam, Sivakanesan R and Wijeratne (1998). Assessment of the protein quality of soybean products. Proceedings of Jaffna Science Association. p 11-12.
  3. Nirmala Ravimannan and Sivakanesan R (1999). Determination of protein efficiency ratio of soy products. Proceedings of Jaffna Science Association.p 5.
  4. Nirmala Ravimannan and Sivakanesan R (2000). Determination of amino acid composition of soy products. Proceedings of Jaffna Science Association. Jaffna, 8 (1): 2
  5. Nirmala Ravimannan and Sivakanesan R (2002). Determination of trypsin inhibitor content of soy products. Proceedings of Jaffna Science Association. Jaffna, 10: 2
  6. Ravimannan N (2004). Determination of Genistin, Genistein and Daidzein contents in soy products. Proceedings of the 60th Annual Seission. Sri Lanka Association for the Advancement of Science. 240.
  7. Ravimannan N (2004). Allelopathic influence of Digitaria sanguinalis on germination and seedling growth of some selected crops. Proceedings of the 60th Annual Sessions. Sri Lanka Association for the Advancement of Science. 120
  8. Ravimannan N (2005). A review of organic spices. International symposium on herbal medicines, phytopharmaceuticals and other natural products. 65.
  9. Kapilan and N. Ravimannan (2006). Effect of commonly used inhibitory substances on fermentation of sweet sugary sap of Palmyrah in Jaffna. Proceedings of the 26th Annual Sessions of the Institute of Biology, Sri Lanka. 32.
  10. Ravimannan (2006). Comparison of different preservation techniques of fungal cultures. Proceedings of the 26th Annual Sessions of the Institute of Biology, Sri Lanka. 33.
  11. Ravimannan (2006). Loss of biodiversity in relation to flora. International Conference on Humid tropical ecosystems: changes, challenges, opportunities. 88.
  12. Nirmala Ravimannan (2006). Functional Foods from probiotics. 10th anniversary international symposium. Sabaragamuwa University of Sri Lanka.66
  13. Ravimannan and and N. Lohini (2006). Testing the antibacterial activity of Curcuma longa. Proceedings of the 64th Annual Sessions. Sri Lanka Association for the Advancement of Science. 190.
  14. Kapilan and N Ravimannan (2008). Antimicrobial activity of Rhizopus stolonifer. Proceedings of the 64th Annual Sessions. Sri Lanka Association for the Advancement of Science.77
  15. Kapilan and N Ravimannan (2008). Effect of different inhibitory substances on fermentation of sweet sugary sap of kithul in Jaffna. Proceedings of the 64th Annual Sessions. Sri Lanka Association for the Advancement of Science. 271.
  16. Ravimannan and T. Mythili (2008). Spoilage of some cooked rice varieties consumed in Jaffna peninsula. Proceedings of the 64th Annual Sessions. Sri Lanka Association for the Advancement of Science. 105.
  17. Ravimannan and T. Mythili (2009). Identification of Bacillus sp in fresh and refrigerated vegetables. Proceedings of the 65th Annual Sessions. Sri Lanka Association for the Advancement of Science.
  18. Ravimannan and T. Mythili (2010). Antimicrobial properties of tomato, garlic and onion against common food-borne pathogens. Proceedings of the 66th Annual Sessions. Sri Lanka Association for the Advancement of Science. 139
  19. Nirmala Ravimannan (2011). Interesting factors about arboretum in Sri Lanka. 2nd world Biodiversity congress. Malaysia 121
  20. Mathuranthini S., Ravimannan N. and Sevvel P. (2012). Study of Saccharomyces cerevisiae IQ motifs of Iqg1p and its interaction with Mlc1p. JUICE. University of Jaffna, 191.
  21. Sathiyaseelan V, Niranjan K and Ravimannan N (2013). Anatomical and antimicrobial screening of Peristrophe bicalyculata and Andrographis paniculata. First International conference on Unani, Ayurveda, Siddha and traditional medicine. Institute of Indigenous Medicine, University of Colombo. 24.
  22. Ravimannan, P. Sevvel and T. Mythili (2013). Antibacterial properties of various extracts of Onion against some food borne pathogens. Proceedings of Jaffna Science Association. Jaffna, 20 (1); 0 2.
  23. Tharmila, P. Sevvel, K. Niranjan and N. Ravimannan (2013). Invitro antibacterial activity of some medicinal plants found in Jaffna Peninsula. Proceedings of Jaffna Science Association, Jaffna. 20 (1); 03.
  24. Sathiyaseelan V, Niranjan K and Ravimannan N (2014). Antimicrobial and anatomical screening of the bark of Salvadora persica Linn. Proceedings of the 2nd International conference on Unani, Ayurveda, Siddha and traditional medicine. Institute of Indigenous Madicine, University of Colombo. 124.
  25. Sornalingam Gunavarshan, Abyerami Sivaruban and Nirmala Ravimannan (2015). Diversity of true mangroves in Mandativu island of Jaffna, Sri Lanka. Proceedings of the 2nd Ruhuna international science and technology conference, University of Ruhuna. 85.
  26. Nirmala R. (2012). Food allergies- a review. Pandit G.P. Wickramarachchi Memorial International research symposium.57
  27. Ravimannan N., Sevvel P. and Mangayatkarasi P. (2012). Preservation of fungi by using mineral oil and silica gel in laboratories for teaching purposes. JUICE. University of Jaffna, 197.
  28. Nirmala Ravimannan (2013). Threats and conservation of the Bundala wetland in Sri Lanka. World biodiversity congress. Thailand. 83.
  29. Nirmala Ravimannan (2014). Threats to biodiversity of seagrasses in Sri Lanka. World biodiversity congress.108.
  30. Ravimannan N., Sevvel P. and Navaneetha S. (2014). Study of traditional fermented food idli and thosai. Proceedings of Jaffna Science Association, Jaffna. 21 (1): 06.
  31. Ravimannan N., Sevvel P. (2015). Plant growth promoting rhizobacteria. International conference on Agro Biodiversity and 20 years of WTO. The Tamil Nadu Dr. Ambedkar Law University. India. 55
  32. Ravimannan N., Sevvel P.and Lohini N. (2015). Cultivation of Curcuma longa using pots in home gardens for culinary use. Proceedings of Jaffna Science Association, Jaffna. 22 (1): 06.

  33. Ravimannan,  N. and Dulani, H.G.K. Study on microbial and chemical characteristics of sauerkraut during fermentation, 27th annual session of the Jaffna Science association, 22nd Oct, 2020.

  34. Sukanja, P. and Ravimannan, N., 2021. Optimization of indole-3-acetic acid production by Philosphere bacteria from Maize, Tomato and Cabbage. Proceedings of the Physics society, p.1.
  35. Lakshani, B. H. M. H. and Ravimannan, N., 2021. Antibacterial activity of Zingiber officinale against selected bacteria. Technological Advances in Science, Medicine and Engineering Conference (TASME).
  36. Sukanja,P and Ravimannan, N (2022). Isolation and identification of the most prevalent bacteria in the phyllosphere of some crops, Proceedings of the Jaffna Science Association, Vol 28(1), p.1
  37. Lakshani, B.H.M.H., Ravimannan,N (2022). Antifungal activity of Zingiber officinale against selected fungi, Undergraduate research symposium, 2022, Physics society, University of Jaffna.
  38. Lakshani, B.H.M.H., Ravimannan,N and Sevvel, P. (2022). Comparison of antifungal activity of rhizomes of Zingiber officinale from different zones in Sri Lanka against selected fungi, Vingnanam Research Conference-2022, p.33.
  39. Rushani, V, Nirmala, R, Vengadaramana, A, Kapilan, R and Eustace Y Fernando (2022). Proceedings of the 5th National symposium on Agriculture, EUSL.
  40. Dulani,H.G,H,K and Ravimannan, N (2022). Sauerkraut as a probiotic food, 2nd International Research Conference 2022, SLTC Research University, Sri Lanka.
  • JNCASR-COSTED Fellowship programme 2000
  • Visiting Scholar- University of Queensland 2003

Grants

  • University Research Grant URG 2013, URG 2014, URG 2015

National and International Contributions

  • Life member of Sri Lankan Association for the Advancement of Science
  • Life member of Institute of Biology
  • Life member of Jaffna Science Association