Thapar University 2007 M.Sc BioTechnology Principles of Food Processing & Preservation - Question Paper
Thapar University, Patiala
M.Sc (1st Year)
End Semester exam
BT004 (Principles of Food Processing & Preservation)
Ifiapar "University <Department of (Biotechnology arufEnvironmentalSciences
BT 004: Principles of Food Processing and Preservation Attempt any six questions. All questions carry equal marks.
Instructor: Shalini G. Rudra Time: 3 h M.M. 72
1 i Classify proteins on the basis of their solubility. What are the indices of protein 6 quality?
ii Differentiate between CAS and MAP. 4
iii What are the D- and z- values. 2
2 i Discuss any four types of dryers. What is osmotic dehydration? 5
ii What is the PFA act. In which cases a food article is considered adulterated? 4
iii What is sorption isotherm and the theory of its hysteresis?_3
3 i What are the areas in which biotechnology been applied in food processing? Which 7
microbes have been used for vitamin and gum production commercially? ii Give the structure and importance of pectin in fruits. Discuss its transformation 5 _during ripening._
4 i Discuss briefly: (i) Rancidity, (ii) Enzymatic browning, & (iii) Caramelization 6
ii What is the status of Indian food industry? Mention the scenario in different sectors 6
_of food processing.___
5 i What are the major functions of packaging? Which considerations are involved in 6 bulk packaging?
ii What is aseptic packaging? What are its advantages over conventional packaging. 3
iii Explain the freezing curve._3
6 i Discuss the application of pulsed electric field and ultrasound in food preservation. 5
ii Write short notes on any four: (i) Blanching, (ii) Case hardening, (iii) Freeze-bum, 4 (iv) BMR, & (v) Cold shortening
iii Draw the structure of starch. 3
7 i Discuss egg proteins and milk proteins. 5+3
ii How much protein is required for human body? 1
iii Enlist essential amino acids.______3
8 i What are the sources of irradiation? 2
ii Explain beer making. 4
iii According to the Food Safety and Standards Act, what is the definition of food and 6 _food additive. What is the composition of the Food authority? _
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