Study programme Agricultural Economics Agricultural Engineering Agroecology Animal Sciences Horticulture Landscape architecture Organic Agriculture Plant Protection Plant Sciences

Modern postharvest technology of fruit crops (152071)

ECTS 6.00
English language R1
E-learning R2
Teaching hours 60
Lectures 36
Practicum 20
Seminar 4
Lecturer
Prof. Tomislav Jemrić, PhD
Associate teacher for exercises
Assist. Prof. Goran Fruk, PhD
Grading
Sufficient (2) 60,00-69,99%
Good (3) 70,00-79,99%
Very good (4) 80,00-89,99%
Excellent (5) 90,00-100,00%

Course coordinator

Prof. Tomislav Jemrić, PhD
Prof. Tomislav Jemrić, PhD

Course description

Student gets the basic knowledge needed to begin work in the field of postharvest technology of fruit crops. This knowledge can be later upgraded with professional experience in enterprises such as large cold stores, distributive centres and retail chains, etc.)

Type of course

General competences

Students will be competent to:
• Determinate of optimal harvest date
• Determinate of physiological disorders of fruit
• Evaluate the standard fruit quality
Students will get knowledge of basic postharvest technology of fruit, postharvest fruit treatments and fruit packaging systems.

Types of instruction

  • Field work
    Field work includes trip to orchards during harvest, trip to storage and packinghouses to see different postharvest technologies used in fruit crops.
  • Laboratory practice/exercises
    In Laboratory students will learn about basic parameters used to determine harvest date and fruit quality, and how to conduct those analyses.
  • Lectures
    Lecture will be held in classroom and will be used to get teoretical knowledge about postharvest technologies used in fruit crops.
  • Practicum
    Practicum will be held in laboratory or classroom and it will provide students to see and learn to recognize symptoms of physiological disorders in fruits caused by wrong harvest date or storage conditions.
  • Seminars
    Seminars will be used so students learn how to use relevant scientific and professional literature with critical review. This will be performed as written work or case study.

Learning outcomes

Learning outcome Evaluation methods
explain basic physiological processes in fruits after harvest written or oral exam
define and explain effect of cultivation factors on fruit quality after harvest written or oral exam
define and explain systems for storage of fruits in normal and controlled atmosphere written or oral exam
organize and implement determination of fruit harvest date laboratory task
plan and implement a series of activities in storage of fruits seminar
explain and apply the acquired knowledge and skills in storage of fruits written or oral exam
present the results of some of the activities related to the storage of the fruits seminar

Working methods

Teachers' obligations

Keeping lectures, exercises and seminars

Students' obligations

Regular attendance to classes, regular attendance to the exams, regular fulfillment of obligations, regularly done laboratory task, positively evaluated seminar

Methods of grading

Evaluation elements Maximum points or Share in evaluation Grade rating scale Grade Direct teaching hours Total number of average student workload ECTS
Laboratory task 15% 20 8 2
Seminar 10% 4 8 1
1. midterm exam 38% 18 16 1.5
2. midterm exam 37% 18 16 1.5
Final exam 75% 16 32 3
Total 100% 60 48 6
Evaluation elements Description Deadline Recoupment
Seminar Write a seminar with at least 15 scientific relevant references in accordance with the received instructions and within the deadline set it on the system for e-learning According to the agreement with the teacher Obliged work off of the exercises
1. midterm exam Answer correctly to at least 60% of the questions in the system for e-learning According to the agreement with the teacher Obliged work off of the exercises
2. midterm exam Answer correctly to at least 60% of the questions in the system for e-learning According to the agreement with the teacher Obliged work off of the exercises
Final exam Answer correctly to at least 60% of the questions in the system for e-learning or satisfactory answer to questions in oral exam According to the agreement with the teacher

Weekly class schedule

  1. Introduction and definition of the course, distribution and postharvest behavior of fruits. Classification and characteristics of fruits. L - Course introduction, situation analysis of cooling capacity of fruits in the world and in the Republic of Croatia, keeping the role of fruit in the production chain. Morphological and physiological characteristics of fruit, maturation, respiratory curve of fruits. The ethylen role in fruit. Climacteric rise, non-climacteric fruits, suppressed climacteric fruits, storage capability of fruits.
  2. Classification and characteristics of fruits. The consequences of inadequate harvest. L - The ethylen role in fruit. Climacteric rise, non-climacteric fruits, suppressed climacteric fruits, storage capability of fruits. The concept of optimum harvest date, the consequences of improper harvest date and its effect on storage capability. Effect ecological, agricultural and pomotechnical operation on biochemical processes in the fruit and their effects on the length and quality of care.
  3. The consequences of inadequate harvest. The factors that act before harvest to storage. L - The concept of optimum harvest date, the consequences of improper harvest date and its effect on storage capability. Effect ecological, agricultural and pomotechnical operation on biochemical processes in the fruit and their effects on the length and quality of care. Effect ecological, agricultural and pomotechnical operation on biochemical processes in the fruit and their effects on the length and quality of care (continued).
  4. The factors that act before harvest to storage. Chemical analysis of fruit. L+Lab - Effect ecological, agricultural and pomotechnical operation on biochemical processes in the fruit and their effects on the length and quality of care (continued). Basic analysis of fruit quality.
  5. Postharvest methods L - Chemical, physical and biological processes with fruits to improve storability (heat treatments, microwaves, radiation, etc.). Modern ways of fruit packaging, modified atmosphere packaging, the possible negative effects of packaging.
  6. Postharvest methods L - Chemical, physical and biological processes with fruits to improve storability (heat treatments, microwaves, radiation, etc.). Modern ways of fruit packaging, modified atmosphere packaging, the possible negative effects of packaging.
  7. Storage methods L - Storage technologies in a normal and controlled atmosphere, hypobaric storage.
  8. Storage methods L - Storage technologies in a normal and controlled atmosphere, hypobaric storage.
  9. Sensory test. Physiological disorders. E+L - The role of sensory tests in the assessment of storage capability, practical demonstrations. The concept of physiological disorders, causes and the procedures for their mitigation or elimination.
  10. Physiological disorders. Recognition of physiological disorders E, e-L - The concept of physiological disorders, causes and the procedures for their mitigation or elimination. Recognition of visual symptoms of physiological disorders and estimation of their intensity.
  11. Seminar S, Pe-L, M, I,W - Independent work of students and their presentation of seminar papers.
  12. Seminar S, Pe-L, M, I,W - Independent work of students and their presentation of seminar papers.
  13. Field work - Cold stores F - Visit refrigerators and practical introduction to the technological processes in cold store.
  14. Field work - Distribution Center F - Visit to the distribution center and practical introduction to the technological processes in the distribution of fruit.
  15. Exam S

Obligatory literature

  1. Wills, R., McGlasson, B., Graham, D., Joyce, D. 1998. Postharvest: An Introduction to the Physiology & Handling of fruit, vegetables & ornamentals, UNSW Press, CAB International, Wallingford, UK
  2. Kader, A. A. 2002. Postharvest Technology of Horticultural Crops—Third Edition, ANR Publications, Oakland, USA.

Recommended literature

  1. Thompson, A.K. 1998. Controlled atmosphere storage of fruits and vegetables, CAB International, Wallingford, UK
  2. R. Dris i S. Mohan Jain, Eds. 2004. Production Practices and Quality Assesment of Food Crops, Vol IV: Postharvest Treatment and Technology, Kluwer Academic Publishers, Dordrecht, Nizozemska
  3. Seymour, G., Taylor, J., Tucker, G., 1993. Biochemistry of fruit ripening, Chapman˛& Hall, London

Similar course at related universities

  • Post harvest biology and technology of fruits, Faculty of Horticultural Science, Corvinus university of Budapest, Hungary