Total No. of Questions 05] [Total No. of Pages 02
M.Sc. DEGREE EXAMINATION, MAY 2017
Second Year
FOODS NUTRITIONAL SCIENCE
Food Microbiology and Toxicology
Time 3 Hours Maximum Marks 70
Answer all questions choosing one from each Unit x 14 70)
Each question carries 14 marks
Unit I
Q1) Write the principles underlying in the spoilage of foods. Explain the chemical
changes occur in the spoilage mechanism.
OR
What are food enzymes? Explain the factors relating in the destruction of
naturally present food enzymes.
Unit II
Q2) What is meant by micotoxin contamination of Foods? Write the prevention
methods for the micotoxin contamination.
OR
Explain Growth Curves of microorganisms. What are the physicochemical
factors influencing destruction of microorganisms?
Unit III
Q3) What is toxicity? Explain the classification of Food toxicants with suitable
examples. What are the diseases caused by Food toxicants.
OR
Discuss the importance of micro-organisms in Food preservation. Write the
characteristics of yeast.
Unit IV
Q4) Discuss the toxicology of Marine foods.
OR
What are the toxic effects of food on human health? Explain neurotoxicity.
Unit V
Q5) What are derived food toxicants? Explain the Toxins formed from fats.
OR
Explain the Toxins formed from proteins and their effects on human health.