LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.
SIXTH SEMESTER – APRIL 2012
PB 6609/PB 6606 – FERMENTATION TECHNOLOGY
Date : 20-04-2012 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
PART – A
ANSWER THE FOLLOWING, EACH WITHIN 50 WORDS ONLY: (10 X 2=20 marks)
- Define fermentation.
- What are secondary metabolites?
- What are the four phases of growth in fermentor?
- Define upstream processing.
- What are the functions of impeller in fermentor?
- Define sparger.
- What are steam traps?
- What is an online sensor?
- Comment on Trophophase and Idiophase.
- Write the principle of centrifugation.
PART – B
ANSWER THE FOLLOWING, EACH WITHIN 500 WORDS ONLY:
DRAW DIAGRAM WHEREVER NECESSARY: (5 x 7 = 35 marks)
- a) Write a general account on fermentation industries.
(or)
- b) Write short notes on transformation process.
- a) What is fed batch fermentation? Write explanatory notes on it.
(or)
- Describe the microbial growth kinetics in Continuous culture.
- a) Write the Basic functions of a fermentor.
(or)
- b) Give an account on any two types of fermentor.
- a) Write about the measuring and controlling devices for monitoring of any four process
Variables.
(or)
- b) Write in short about the application of computers in fermentation.
- a) Give a detailed account on liquid-liquid extraction.
(or)
- b) Schematically represent the process of down-stream processing.
PART – C
ANSWER ANY THREE OF THE FOLLOWING, EACH WITH 1200 WORDS:
DRAW DIAGRAM WHEREVER NECESSARY: (3X15=45 marks)
- Write an essay on range and component parts of a fermentation process.
- Write a short note on (i) Isolation and Preservation of microorganism
(ii) Methods of improvement of industrial microbes.
- List out the essential parts of fermentor and write short note on each part.
- Write about the measuring and controlling devices for monitoring pH, dissolved oxygen and foaming rate of a fermentor.
- Write an essay on biosensors with their applications.
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