Bangalore University B.Sc Biotechnology V SEMESTER Examination, Nov/Dec 2008 Question paper

Microbiology-VI
Food and Dairy Microbiology

Time:3hours

Max marks:60

Instruction:

1) Answer all questions
2) Draw diagram where necessary
3) Answer should be written completely either in English or in Kannada

I. Answer all questions 5x2=10
1) Define aflatoxin
2) What is Hydrogen swell?
3) Why is yeast used as SCP?
4) Write a note on resourfin.
5) What is rBGH?

II. Answer any four questions. 5x4=20
6) Give an account of different source of contamination of food.
7) Write a brief note on standard plate count in microbial examination of milk.
8) Write a note on single cell oils.
9) How is rDNA technology applied in Dairy industry?
10) Describe the proteolysis caused by microorganism in milk.

III. Answer any three of the following 3x10=30
11) Explain preservation of food using chemical preservatives and radiation .
12) Give a detailed account of botulism.
13) Describe the diversity of microorganism in milk.
14) Describe in detail the process of pasteurization and sterilizations method of preservation of milk.
15) Explain the steps in chess production.