Department of Dairy Microbiology


The objective of the department is to impart theoretical and practical knowledge on microbiological aspects of fluid milk, milk products and other foods for the undergraduate and postgraduate students and orient masters’ students to take up research work projects. In addition to this basic objective, the department is also aimed at providing training to the farmers and quality control personnel on clean milk production and microbiological analysis of milk and milk products, respectively.

Teaching Activities:

B.Tech. (Dairy Technology) and M.Tech. (Dairy Microbiology) students are taught about basic aspects of microbiology followed various microorganisms associated with fluid milk and milk products, the effect of processing steps on the growth and survival of these microorganisms, defects associated with various types of microorganism and their control measures and various foodborne pathogens encountered in milk and milk products and their elimination or control procedures. Recognizing the importance of microflora in human health and welfare, a course is dedicated to basic aspects of starter cultures, their use in the manufacture of fermented milks and various types of cheeses and a special category cultures called probiotics, which have been proven to have beneficial health aspects on consumers. Students are also taught about the quality and safety monitoring aspects of milk and milk products wherein they are exposed to various national and international food laws and food management systems such as FSSA, CODEX, ISO-9000 series, ISO -22000, ISO – 14000 standards. Finally a brief exposure is given on the various aspects of food microbiology viz. food preservation, food spoilage and the industrial importance of microorganisms covering the use of bioagents for the production of various substances such as alcohol, vinegar, vitamins, antibiotics etc. In the PG programme the students are trained to conceive, plan and execute the research project of their own choice and interest.

Courses Offered: UG Courses (As per the ICAR V Deans Committee):
Course No. Title of the Course Credit Hours
DM 111 Fundamentals of Microbiology 3 (2+1)
DM 121 Microbiology of Fluid Milk 3(2+1)
DM 211 Microbiology of Dairy Products 2 (1+1)
DM 221 Starter Cultures and Fermented Milk Products 3 (2+1)
DM 311 Quality and Safety Monitoring in Dairy Industry 3 (2+1)
DM 321 Food and Industrial Microbiology 3 (2+1)
Total Credits 17(11+6)
PG Courses:
Course No. Title of the Course Credit Hours
DM 511 Microbial Morphology and Taxonomy 3(2+1)
DM 512 Microbial Physiology 3(2+1)
DM 515 Microbiology of Processed Dairy Foods 4(3+1)
DM 521 Dairy Starter Cultures 3(2+1)
DM 523 Microbial Quality and Safety in Dairy Industry 4(2+2)
DM 522 Microbial Genetics 3(2+1)
DM-591 Master’s Seminar I(1+0)
DM-599 Master’s Research 20(0+20)
Faculty Profile:
Name Designation
Dr. K. Nageswara Rao, Ph.D. Professor & Head
Dr. I. Sankara Reddy, Ph.D. Professor
Ms. R. Madhavi Assistant Professor(contrcual)

In addition to the above teaching staff, there is one technician with M.Sc. (Microbiology) qualification and one lab attendant in the department.

Research Activity: Research Projects Taken up by the Staff – Completed
S.No. Title of the Project & Principal Investigator Budget (Rs.) Funding Agency
1 Development of Bio-Fortified Functional Dairy Products Using Probiotic Cultures (Dr. V. Padmanabha Reddy) 17 Lakhs ICAR (NATP)
2 A Milk Value Chain for the Unorganized Sector (Dr. V. Padmanabha Reddy) 63 Lakhs ICAR (NAIP)
3 Development of E-Courses for B. Tech (Dairy Technology) Degree Programme (Dr. V. Padmanabha Reddy) 78 Lakhs ICAR (NAIP)
S.No. Title of the Project & Principal Investigator Budget (Rs.) Funding Agency
1 Development of Lactic and Probiotic Cultures in Sachets to Prepare Dahi at the Household Level for Improving the Health and Well-being of the Rural Population (Dr. K. Nageswara Rao) 60 Lakhs RKVY
M.Tech. Research Projects - Completed
S.No. Title of the Project & Name of the Student Year of Completion
1 Microbiological Quality of Dried Milks and Infant Foods with Special Reference to Staphylococci (Ms. R. Jyothirmayi) 1996
2 Isolation and Characterization of Lactococci and Screening for Bacteriocin Activity (Mr. M. Sudhamani) 1997
3 Antimicrobial Properties of Lactobacillus acidophilus in Association with Yoghurt Cultures (Mr. M. Sreenivasa Rao) 2002
4 Growth Characteristics of Starter Cultures in Probiotic Frozen Yoghurt (Mr. O. Neelkanth) 2008
M.Tech. Research Projects – Ongoing
S.No. Title of the Project & Name of the Student Year of Completion
1 Studies on Optimization of Cell biomass and Effect of Cryoprotectants on the Viability of New Cultures of Lactic Acid Bacteria (Ms. J. Veeramani Jyothi) likely to be in 2017

Extension Activity: The department also provides training to rural farmers on various aspects of clean milk production and also trains the dairy quality control personnel on the microbiological testing of milk and milk products. In addition to this, the departmental staff also extends cooperation to the national regulatory agencies such as FSSAI, EIC etc. in the inspection of dairy plants and providing inputs for the formulation of standards.

Equipment Available in the Department
  1. Bench Top Fermenter
  2. Bench Top Refrigerated Centrifuge
  3. BOD Incubator
  4. Laminar Air Flow Units
  5. Biosafety Cabinet  (A2 type)
  6. Deep Freezer (– 20 °C)
  7. Freeze Drier
  8. Gel electrophoresis unit
  9. Microscope – Phase contrast, Bright field, Dark field with photomicrography attachment
  10. UV-VIS Spectrophotometer
  11. UV transilluminator
  12. Ultra Low Deep Freezer (-85°C)
  13. Water Purification System
  14. Spiral Plater
  15. pH Meter
  16. High Sensitivity Balance
  17. Colony Counters
  18. Waterbaths
  19. Autoclaves
  20. Incubators
  21. Hot air oven
  22. Membrane Filtration systems
  23. Turntable
  24. Auto-pipettes of various capacities
  25. Refrigerators
Awards and Rewards Received by the Staff:
Year Name of the Staff Award
2014 Dr. V. Padmanabha Reddy Fellow of National Academy of Dairy Science India
2014 Dr. V. Padmanabha Reddy Fellow of Association of Public Health Veterinarians
2016 Dr. V. Padmanabha Reddy Fellow of Indian Dairy Association, 2016
2016 Dr. V. Padmanabha Reddy Sri Nalakantapuram Sreerama Reddy Gold Medal for Best Veterinary Scientist
2016 Dr. K. Nageswara Rao Fellow of National Academy of Dairy Science India