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Dept. of Biotechnology
Dr. Ritu Mahajan
Contact Information
Email : ritupanipat[at]rediffmail[dot]com
Phone : NA
Qualification :M.Sc.,Ph.D
Specialization :Enzyme Technology/ Industrial Biotechnology/ Microbial Biotechnology
Others Information :

Teaching activity: 

Involved in the teaching of various courses in Biotechnology such as-:

 Enzyme technology, Biochemistry, Microbiology, Environmental Biotechnology, Plant cell and tissue culture, Animal Biotechnology, Immunology, Genetic Engineering, Molecular Cell Biology

Experience and related works

Total teaching experience

· Under-graduate  :  Six Years & Seven Months  

· Post Graduate     :   Nine Years & Three Months

Total Research Experience :  22 Years

  • Worked at reputed CSIR institute (Institute of Microbial Technology, Chandigarh) on Pharmaceutical important drug Streptokinase.
  • Also worked at leading International Pharmaceutical Industrial R & D Group (Max-Gb Limited, Max of India and Gist Brocades of Holland).
  •  Bookspublished for Pharmacy Students, students of Biochemistry, Microbiology, Biotechnology and other branches of Applied Sciences, for M.B.B.S, M.D. and Dental Students.
  • Established Biotechnology Department at KVA DAV college for women, Karnal
  • Established Biochemistry and Microbiology Labs at Doon Valley Institute, Karnal

Publications :  48

Ph.D. Guidance :  Five (Completed), Two (Ongoing)

Membership of Professional Societies :

Life member of the following scientific bodies

  • Society of Biological Chemists, India,
  • Society for Biotechnologists, India,
  • Association of Microbiologists of India
  • Indian Science Congress Association, Haridwar Chapter


Research Projects :  

UGC Major Research Project – “Isolation, Characterization and Industrial application of xylanase and pectinase from the same bacterial isolate” (Completed)

DST, Haryana sponsored Research Project entitled Production and Commercial viability of xylano-pectinolytic enzymes in Deinking of newspaper, Delignification of various pulps and Bioprocessing of fabrics (Ongoing)


Kaur A, Singh A,Mahajan Ritu (2014) Characterization of industrially - valuable xylanopectinolytic enzymes produced concurrently by a novel isolate of Bacillus pumilus. Biotechnology  Letters 36:2229–2237.

Dua A, Chander S, Agrawal S, Mahajan Ritu (2014)Antioxidants from defatted Indian Mustard (Brassica juncea) protect biomolecules against in vitro oxidation.Physiology and Molecular Biology of Plants.20(4):539–543.

Dua A, Garg G, Nagar S, Mahajan Ritu (2014) Methanol extract of clove (Syzygium aromaticum Linn.) damages cells and inhibits growth of enteropathogens. Journal of Innovative Biology. 1( 4): 200-205

Dua A, Garg G, Kumar D, Mahajan Ritu (2014)Polyphenolic Composition And Antimicrobial Potential Of Methanolic Coriander (Coriandrum Sativum) Seed Extract. International Journal of Pharmaceutical sciences and Research 5(6): 2302 - 2308.

Goyal S, Dubey P K, Kumari N, Niranjan S K, Kathiravan P, Mishra B P, Mahajan Ritu, Kataria R S (2014) Caprine Toll-like receptor 8 gene sequence characterization reveals close relationships among ruminant species. International Journal of Immunogenetics  41: 81–89.

Dua A, Agrawal S, Kaur A, MahajanRitu(2014) Antioxidant profile of Coriandrum       sativum methanolic extract. International Research Journal of Pharmacy 5(3): 220 – 224.

Goyal S, Dubey P K, Sahoo B R, Mishra S K, Niranjan S K, Singh Sanjeev, Mahajan Ritu,  Kataria R S (2014)Sequence based structural characterization and genetic diversity analysis across coding and promoter regions of goat Toll-like receptor 5 gene. Gene 540: 238–245.

Aggarwal R, Bansal A, Rozas I, Diez-Cecilia E, Kaur A, Mahajan Ritu, Sharma J (2014) p-Toluenesulfonic acid catalyzed solvent-free synthesis and biological evaluation of new 1-(4′,6′-dimethylpyrimidin-2′-yl)-5-amino-4H-3-arylpyrazole derivatives. Medicinal Chemistry Research 23(3):1454-1464.

Dua A, Garg G,Mahajan Ritu (2013) Polyphenols, flavonoids and antimicrobial properties of methanolic extract of fennel (Foeniculum vulgare Miller).European Journal of Experimental Biology 3(4):203-208.

Ali S, Gautam R K, Mahajan Ritu, Krishnamurthy S L, Sharma S K, Singh R K,  Ismail A M (2013) Stress indices and selectable traits in SALTOL QTL introgressed rice genotypes for reproductive stage tolerance to sodicity and salinity stresses. Field Crops Research154: 65–73

Dua A, Vats S, Singh V, Mahajan Ritu(2013) Protection of Biomolecules against in vitro oxidative damage by the antioxidants from methanolic extract of Trigonella foenum-graecum seeds. International journal of Pharmaceutical Sciences and Research  4(8): 3080-3086.

Goyal S, Dubey P K, Kathiravan P, Mishra B P, Mahajan Ritu, Kataria R S (2013) Expression analysis of viral nucleic acid recognizing Toll-like receptor-7 and 8 genes across Caprine tissues. Indian Journal of Animal Sciences83 (10): 1068–1070

Ali S, Gautam R K,Mahajan Ritu,Krishnamurthy S L and Sarangi S K (2013) Genetic variability and association analysis for grain yield components among SALTOL QTL introgressed rice genotypes under normal and saline environments. J. Indian Soc. Coastal agric. Res. 31(1): 34-40.

Dua A, Mittal A, Gupta S, Mahajan Ritu (2013) Bioreactive compounds andAntioxidant Properties of methanolic extract of Fennel (Foeniculum Vulgare Miller). International research Journal of Pharmacy. 4(5):241-245.

Garg G, Dhiman SS, Gautam R, Mahajan Ritu,Patra AK, Sharma J (2013) Bioscouring of jute fabric by cellulase-free alkalo-thermostable xylanase from Bacillus pumilus ASH. Journal of Molecular Catalysis B: Enzymatic 85– 86 :43– 48.

Dhiman SS,Mahajan Ritu, Sharma J (2013) Pectinases of Thermophilic Microbes: In book Thermophilic Microbes in Environmental and Industrial Biotechnology: Biotechnology of thermophiles Chapter 26 edited by  Satyanarayana T, Littlechild J and Kawarabayasi Y. ISBN NO. 978-94-007-5898-8 (Springer Science) Second Edition

Ritu Mahajan(2013) Manual of Practical Biochemistry for Dental  Students. Vayu Education Of India.       ISBN No.978-93-82174-94-3.

Dua A, Garg G, Singh B,Mahajan Ritu (2013) Antimicrobial properties of methanolic extract of Cumin (Cuminum cyminum)  seeds. International Journal of research in Ayurveda & Pharmacy. 4(1):104-107

Ritu Mahajan (2013) Practical Biochemistry for M.B.B.S and M.D. Students.Vayu Education Of India.ISBN No.978-93-82174-95-0.

Ali S,Mahajan Ritu,Gautam RK, Singh RK, Singh J(2012) Genetic  variability parameters in SALTOL introgressed rice genotypes in sodicity and salinity stress environments. Crop Improvement :391-392

Dua A, Gupta SK, Mittal A,Mahajan Ritu (2012)A Study of Antioxidant Properties and Antioxidant Compounds of Cumin(Cuminum cyminum) International Journal of Pharmaceutical & Biological Archives 3(5):1110-1116.

Battan B, Dhiman SS, Ahlawat S,Mahajan Ritu, Sharma J (2012) Application of  thermostable xylanase of Bacillus pumilus in textile processing. Indian journal of Microbiology 52(2):222–229.

Ritu Mahajanand Anita Dua (2012)Introduction to basics of Biotechnology. Vayu Education Of India.ISBN No.978-93-82174-08-0.

Singh A, Yadav RD, Kaur A, Mahajan Ritu (2012)An ecofriendly cost effective enzymatic methodology for deinking of school waste paper.Bioresource Technology 120: 322–327.

Goyal S, Dubey PK, Tripathy K,Mahajan Ritu, Pan S, Dixit SP, Kathiravan P, Mishra BP, Niranjan SK, Kataria RS (2012) Detection of polymorphism  and sequence characterization of toll- like receptor 7gene of Indian goat revealing close relationship between ruminant species.Animal Biotechnology 23: 194–203.

Goyal S, Dubey PK, Kathiravan P, Mishra BP, Mahajan Ritu , Kataria RS (2011)Sequence based prediction of p utative transcri ption factors binding sites in the 5’-up s tream region of Toll-like receptor 8 gene in Indian Sirohi goat. Journal of livestock Biodiversity 3(1):11-16

Aggarwal R, Kumar R, Kumar S, Garg G,Mahajan Ritu, SharmaJ (2011) Synthes-is andand anti-bacterial activity of some 5-hy droxy-5 tri fluoro-methyl-4,5-di hydro pyrazol-1-th io carboxamides, 3-tri fluoro methylpyrazol-1-thiocarboxamides and 4-aryl-2-(5(3)-trifluoromethyl -1-pyrazolyl)thiazoles. Journal of Fluorine Chemistry 132:965–972.

Dhiman SS, Garg G, Sharma J, Mahajan Ritu,Methoxy (2011) Characterization of statistically produced xylanase for enrichment of fruit juice clarification process. New Biotechnology 28(6): 746-755.

Garg G, Mahajan Ritu, Kaur A, Sharma J (2011) Xylanase production using agro-residue in solid state fermentation from Bacillus pumilus ASH for biodelignification of wheat straw pulp. Biodegradation 22:1143-1154.

Dhiman SS, Garg G, Mahajan Ritu, Patra AK, Sharma J (2011) Improvement in physical properties of jute fibre by enzymatic treatment with cellulase free xylanase and pectinase.In proceedings of National conference on multidisciplinary approach in frontier areas of environmental science and engineering. MAFAESE 90-99.

Singh B, Dutt N, Kumar D, Singh S, Mahajan Ritu (2011) Taxonomy, Ethnobotany and Antimicrobial Activity of Croton bonplandianum, Euphorbia hirta and Phyllanthus fraternus.Journal of Advances in Developmental Research 2 (1):21-29.

Kaur A, Mahajan Ritu, Singh A, Garg G, Sharma J (2011) A novel  and cost effective methodology for qualitative screening of alkalo-thermophilic cellulase free xylano-pectinolytic microorganisms using agricultural wastes. World Journal of Microbiology and Biotechnology 27(2):459-463.

Garg G, Dhiman SS, Mahajan Ritu, Kaur A,  Sharma J (2011) Bleach-Boosting effect of crude xylanase from Bacillus stearothermophilus SDX on wheat straw pulp. New Biotechnology 28(1):58-64.

Ritu Mahajan, J. Sharma and R.K. Mahajan (2010) Practical Manual of Biotechnology for        students of Biochemistry, Microbiology, Biotechnology and other branches of Applied Sciences. Vayu Education Of India. ISBN No.978-93-80712-22-2.

Singh B, Singh S, Singh S, Ali L, Mahajan Ritu (2010)Ethnobotanical Significance and Antimicrobial Activity of Blumea lacera (Roxb.) DC. International Journal of Pharmaceutical & Biological Archives. 1(3):314 – 316.

Kaur A, Mahajan Ritu, Singh A, Garg G, Sharma J (2010) Application of cellulase-free xylano-pectinolytic enzymes from the same bacterial isolate in biobleaching of kraft pulp. Bioresource Technology 101:9150–9155.

Mahajan Ritu, Gupta VK, Sharma J (2010) Comparison and Suitability of    Gel    Matrix   for Entrapping Higher Content of Enzymes for Commercial Applications. Indian Journal of Pharmaceutical Sciences72 (2):223-228.

Dhiman SS, Garg G, Mahajan Ritu, Garg N, Sharma J (2009) Single lay out and mixed lay out enzymatic processes for bio-bleaching of kraft pulp. Bioresource Technology 100:4736 – 4741.

Mahajan Ritu, Choudhary MS, Chandana A, Choudhary J, Mann N, Mann R (2009) Lycopene. Pharma Times 41(3):17 – 19.