Information Package / Course Catalogue
Shelf-Life of Foods
Course Code: FE410
Course Type: Area Elective
Couse Group: First Cycle (Bachelor's Degree)
Education Language: English
Work Placement: N/A
Theory: 2
Prt.: 0
Credit: 2
Lab: 0
ECTS: 4
Objectives of the Course

The aim of this course is to provide students with comprehensive theoretical knowledge and practical skills for solving engineering-based problems related to the shelf life of foods. The course covers topics such as shelf-life determination, evaluation of stability in foods, and analysis of deterioration mechanisms. It aims to equip students with the ability to analyze, interpret, and develop engineering applications for these processes.

Course Content

This course is intended to promote understanding of the key factors affecting shelf life, to define deterioration mechanisms, and to comprehend methods used in shelf-life prediction. The course includes detailed discussion of microbiological, physical, and chemical deterioration, as well as sensory analysis methods, determination of acceptability limits, the impact of packaging materials on shelf life, real-time and accelerated testing approaches, and shelf-life estimations based on time-temperature relationships during production. Students will gain the ability to assess shelf-life stability in different food products based on theoretical knowledge.

Name of Lecturer(s)
Learning Outcomes
1.To be able to define physical, chemical, biochemical, and microbiological spoilage mechanisms affecting the shelf life of foods.
2.To gain the ability to apply and interpret sensory, chemical, and physical analysis methods used in shelf-life determination.
3.To distinguish between real-time and accelerated shelf-life tests and to be able to select the appropriate method.
4.To develop engineering solutions for shelf-life stability based on product, process, and packaging characteristics.
5.To have knowledge about legal regulations and acceptability criteria related to shelf life and to be able to apply this knowledge in practice.
Recommended or Required Reading
1.Understanding and measuring the shelf-life of food. Steele R. 2004, Woodhead Publishing.
2.Shelf Life Assessment of Food, 2016, Ed: Maria Cristina Nicoli, CRC Press
3.Sensory Shelf Life Estimation of Food Products, 2010, Guillermo Hough, CRC Press
Weekly Detailed Course Contents
Week 1 - Theoretical
Introduction to shelf life of foods: Definition, history, and importance of the shelf-life concept; basic principles and a general evaluation of related national/international legal regulations
Week 2 - Theoretical
Food quality and signs of deterioration: Components of food quality, sensory quality attributes, and classification of deterioration indicators observed during shelf life
Week 3 - Theoretical
Factors affecting shelf life and food deterioration: Effects of internal and external factors on shelf life; evaluation of parameters such as environmental conditions, packaging, and formulation
Week 4 - Theoretical
Types and mechanisms of microbiological, physical, and biochemical deterioration in foods
Week 5 - Theoretical
Other concepts related to shelf life: The impact of quality loss reactions such as phase transitions, crystallization, staling, lipid oxidation, and Maillard reactions on shelf life
Week 6 - Theoretical
Evaluation of enzymatic deterioration, color changes, protein stability, and textural/functional changes such as crispness
Week 7 - Theoretical
Methods used to determine acceptability limits
Week 8 - Theoretical
Sensory analysis methods
Week 9 - Theoretical
Shelf-life determination process: Planning of shelf-life tests, determination and monitoring of quality criteria, evaluation of results
Week 10 - Theoretical
Principles of real-time and accelerated shelf-life testing: Comparison of advantages and limitations
Week 11 - Theoretical
Shelf-life prediction based on time and temperature relationships in production: Modeling the effect of time-temperature interaction during the food production process on shelf-life
Week 12 - Theoretical
Relationship between packaging and shelf life: Selection of packaging materials, barrier properties, and evaluation of innovative packaging solutions aimed at extending shelf life
Week 13 - Theoretical
Application examples in food products: Specific factors affecting shelf life and preservation approaches in various food groups such as dairy products, bakery products, and meat products
Week 14 - Theoretical
Application examples in food products: Examples of shelf-life determination in different product groups, student presentations
Assessment Methods and Criteria
Type of AssessmentCountPercent
Attending Lectures1%10
Project1%20
Midterm Examination1%30
Final Examination1%40
Workload Calculation
ActivitiesCountPreparationTimeTotal Work Load (hours)
Lecture - Theory143270
Project110111
Midterm Examination18210
Final Examination110212
TOTAL WORKLOAD (hours)103
Contribution of Learning Outcomes to Programme Outcomes
PÇ-1
PÇ-2
PÇ-3
PÇ-4
PÇ-5
PÇ-6
PÇ-7
PÇ-8
PÇ-9
PÇ-10
PÇ-11
OÇ-1
3
2
1
2
2
1
2
1
2
3
OÇ-2
2
2
1
2
2
1
2
2
2
3
OÇ-3
4
4
3
4
4
1
2
2
2
3
OÇ-4
4
4
3
4
4
1
2
2
2
3
OÇ-5
1
3
3
2
2
2
3
Adnan Menderes University - Information Package / Course Catalogue
2026