ADAPT – Advanced Drying Approaches for Product Transformation
- Beschreibung
The Humboldt Reloaded project of “Agriculture Product Preservation: Advanced Drying Techniques for Improved Shelf Life, Nutrition, and Economic Benefits” adopts a literature review approach to systematically compare advanced drying technologies across various agricultural products, including fruits (mango, banana, apple, berries), vegetables (carrot, tomato, chili), and herbs (mint, basil). The study evaluates freeze drying, microwave drying, vacuum drying, infrared drying, heat pump drying, and solar drying based on product characteristics, shelf life, nutritional retention, efficiency, and economic feasibility.
The comparison reveals that freeze drying is highly suitable for high-value and heat-sensitive fruits such as berries and apples, as it preserves structure, color, flavor, and nutrients like vitamin C and polyphenols, though it involves high energy use and cost. Vacuum drying is effective for vegetables like tomatoes and carrots, minimizing oxidation and maintaining color and flavor. Microwave and infrared drying significantly reduce drying time and are suitable for products like banana slices and chili, but require precise control to prevent nutrient degradation and uneven drying. Heat pump drying offers a balance between energy efficiency and product quality, making it versatile for fruits and vegetables. Meanwhile, solar drying is cost-effective and environmentally friendly, widely applicable for herbs and low-value crops, although it is dependent on weather conditions and may result in inconsistent quality.
In terms of shelf life, all advanced techniques effectively reduce moisture content and water activity, inhibiting microbial growth and enzymatic reactions, thereby extending storage duration. Nutritional quality varies across methods; freeze and vacuum drying show the highest retention of vitamins, antioxidants, and proteins, while microwave and infrared methods may lead to partial losses but improve processing speed. Color and flavor retention are also better preserved in low-temperature methods.
From an efficiency perspective, microwave and infrared drying offer rapid drying rates, while heat pump and solar drying reduce overall energy consumption. Economically, advanced drying reduces post-harvest losses and increases product value, especially for export markets, although high initial investment remains a barrier. Compared to conventional sun or hot-air drying, these methods provide superior quality, hygiene, and consistency.
However, limitations include high capital cost, technical complexity, and limited accessibility for small-scale farmers, as well as insufficient crop-specific optimization. Future research should focus on hybrid systems (e.g., solar-assisted heat pump), cost reduction, and integration of smart technologies for adaptive and efficient drying processes.
- Beschreibung des interdisziplinären Teils des Projekts
- In this project, the disciplines of agricultural science, agricultural engineering, food technology, nutritional science, food material science, and food chemistry are combined
- Projektzeitraum
- Sommersemester 2026
- Bewerbungszeitraum
- 07. bis 20.04.2026
- Durchführung
- semesterbegleitend
- Details zu Projektzeitraum und Durchführung
The project can be carried out during the semester or during the lecture-free period by arrangement.
Depending on the number of participants, individual topics can be worked on separately and then combined in teamwork.
The details of the project can be discussed further to focus on the interests of the Humboldt Reloaded Project participants
- Studienfach
- offen für alle Studienfächer
- Betreuende
- Dr. Fetriyuna Fetriyuna
- Institut
- Institut für Agrartechnik (440) (Food Engineering, Food Science and Technology, Food Science and Nutrition)
- Sprache
- englisch
- Teilnehmendenanzahl
- min. 1, max. 6
- Arbeitsaufwand
-
ca. 120 Stunden pro Teilnehmende:r
| 4
ECTS-Punkte
Arbeitsaufwand (Stunden und ggf. ECTS) sind ungefähre Angaben. Die tatsächlich vergebenen ECTS-Punkte ergeben sich aus der tatsächlich geleisteten Arbeit.
- Für dieses Projekt ist kein Motivationsschreiben des Studierenden erforderlich
- Projektart
- theoretisch/nicht experimentell
- Lernziele
-
Die Teilnehmende lernen in diesem Projekt:
Joining this literature review helps students build research skills (systematic searching, critical analysis, data extraction), technical abilities (working with drying parameters, nutrient retention, and basic meta-analysis), and professional experience (teamwork, scientific writing, and presenting findings). It deepens their understanding of food processing and prepares them for future research, internships, or careers in food technology and agro-industry.
- Anmerkungen für Studierende
The scope of work can be adjusted before the project starts, according to the number of participants and depending on preferences and data generated from the scientific database
- Schlagworte
- drying techniques, Agricultural product preservation, Shelf life extension, Nutritional quality, Drying efficiency, Post-harvest losses