Total No. of Questions 05] [Total No. of Pages 02
M.Sc. DEGREE EXAMINATION, MAY 2018
Second Year
FOODS NUTRITIONAL SCIENCE
Food Chemistry Chemical Analysis of Foods
Time 3 Hours Maximum Marks 70
Answer all questions, choosing one from each Unit.
All questions carry equal marks x 14 70)
Unit I
Q1) Write the composition of Water and its Chemical activity in Food Science.
OR
Explain the physico chemical principles of True solutions and Colloidal
solutions.
Unit II
Q2) Write the physical and chemical properties of starch. Explain the methods of
extraction of starches.
OR
Explain the natural sources and types of proteins. Write the structure and
properties of proteins.
Unit III
Q3) Discuss the chemical changes occur in Fruits and Vegetable during harvesting
stage.
OR
What are Food enzymes? Write their functions and importance in food quality.
Unit IV
Q4) How do you determine the total mineral content of foods? Write the principle
and applications of paper chromatography in Food Samples.
OR
Write the principle and applications of HPLC in the analysis of Food Samples.
Unit V
Q5) Write the basic instrumentation, working principle and applications of
Colorimetry in Food analysis.
OR
Write the instrumentation, working principle and applications of Flame
Photometry in Food analysis.