Description of Individual Course Units
Course Unit CodeCourse Unit TitleType of Course UnitYear of StudySemesterNumber of ECTS Credits
ZGMS4152016959PHYSICAL PROPERTIES OF FOOD COMPOUNDSElective474
Level of Course Unit
First Cycle
Objectives of the Course
The aim of the course is to provide a fundamental understanding of the physical properties of foods, to explain the importance of physical properties in food industry and teach the measurement methods and to provide information about analytical tools needed to analyze experimental data to generate practical information
Name of Lecturer(s)
Learning Outcomes
1Knows the basic definitions and principles of physical properties
2Integrate and apply basic knowledge of fundamental engineering principles, thermodynamics and food science to evaluate physical properties of food materials.
3Demonstrate the ability to apply theoretical concepts to practical problem solving
Mode of Delivery
Formal Education
Prerequisites and co-requisities
None
Recommended Optional Programme Components
None
Course Contents
Measurement of physical attributes of food materials such as size, shape, volume,, density, porosity and shrinkage, particle size distribution, Introduction to rheology, stress and strain, solid behavior, Newton’s law of viscosity, viscous fluids, plastic fluids, time dependency, measurement of rheological properties for fluids: capillary flow viscometers, rotational viscometers, falling ball viscometers and other types of viscometers, viscoelasticity, transient tests and oscillatory tests for viscoelasticity, mechanical models: Maxwell model, Kelvin-Voigt model, Burger model, texture of foods, dough testing instruments. Characterization of food materials with regard to their thermal and electrical properties. Importance of water activity and sorption properties of food materials. Colloidal food systems and functionality of food components as emulsifiers, stabilizers, texturizers, gelling and foaming agents.
Weekly Detailed Course Contents
WeekTheoreticalPracticeLaboratory
1Physical attributes: size, shape, particle size distribution,volume, density, porosity, shrinkage
2Physical attributes: size, shape, particle size distribution,volume, density, porosity, shrinkage
3Introduction to rheology: stress and strain, solid behavior, flow of materials: Newton’s law of viscosity, Newtonian flow, non Newtonian flow, time dependency
4Measurement of rheological properties for fluids, capillary flow viscometers, falling ball viscometers rotational viscometers
5Viscoelasticity. Transient tests for viscoelasticity: stress relaxation test, creep test. Mechanical models: elastic model, viscous model
6Combination models: Maxwell model, Kelvin-Voigt model, Burger model, oscillatory testing
7Texture of foods, dough testing instruments
8Midterm exam
9Thermal properties of foods
10Thermal properties of foods
11Electromagnetic properties: color, dielectric properties of foods
12Water activity and sorpsion properties of food materials
13Water activity and sorpsion properties of food materials
14Surface properties of foods
15Student presentations
16Final exam
Recommended or Required Reading
Şahin S., Şumnu S.G., 2006. Physical Properties of Foods. Springer, New York, USA Steffe J.F., 1992. Rheological Methods in Food Processing Engineering.Freeman Press, East Lansing, MI, USA
Planned Learning Activities and Teaching Methods
Assessment Methods and Criteria
Term (or Year) Learning ActivitiesQuantityWeight
SUM0
End Of Term (or Year) Learning ActivitiesQuantityWeight
SUM0
Yarıyıl (Yıl) İçi Etkinlikleri40
Yarıyıl (Yıl) Sonu Etkinlikleri60
SUM100
Language of Instruction
Work Placement(s)
None
Workload Calculation
ActivitiesNumberTime (hours)Total Work Load (hours)
Midterm Examination122
Final Examination122
Attending Lectures14342
Self Study14228
Individual Study for Homework Problems14228
Individual Study for Mid term Examination155
Individual Study for Final Examination155
TOTAL WORKLOAD (hours)112
Contribution of Learning Outcomes to Programme Outcomes
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1
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5
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6
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7
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9
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PO
15
LO14 45  5        
LO25555  3        
LO35554    5 5 43 
* Contribution Level : 1 Very low 2 Low 3 Medium 4 High 5 Very High
 
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