Author(s):
1. Marina Karić, Akademija strukovnih studija Šumadija Odsek Trstenik, Serbia
2. Predrag Dašić, SaTCIP Publisher Ltd., 36610 Vrnjačka Banja i Visoka tehnička mašinska škola strukovnih studija (VTM, Serbia
3. Jelena Erić Obućina, Akademija strukovnih studija Šumadija (ASSŠ) – Odsek Trstenik, 37240 Trstenik, Serbia

Abstract:
Drying of biomaterials takes place during complex and interdependent processes of matter transfer and heat exchange, which are accompanied by a phase change between the wet material and the drying agent, resulting in dehydration of the wet material. The multiplicity and complexity of factors (controlled and uncontrolled) that influence the drying process as well as their interactions make this preservation process extremely complex and difficult to study, which makes its theoretical analysis (modeling) difficult. For the aforementioned reasons, the research is based on experimental results, and the obtained mathematical models refer to the exact material for the experimental space determined by the limit values of the input parameters. In a laboratory convective-condensation dryer, apples of the "red delicious" variety were dried at defined combinations of process parameters: temperature, relative humidity and speed of the drying agent; analyzed the quality of finished dried products (content of total acids and total sugars) and processed the obtained results, ie defined empirical model of the drying process in a convective-condensation dryer. The relevance of certain factors and their influence on the quality parameters of dried products were determined by the method of a planned experiment. The goal of applying the procedure of factorial plans of experiments is to obtain mathematical models and graphic representations of the influence of process parameters on the change of the measured property of the starting-tested material.

Key words:
drying,biomaterials,design of experiment (DoE),statistical analysis,mathematical model

Thematic field:
SYMPOSIUM B - Biomaterials and nanomedicine

Date of abstract submission:
26.08.2024.

Conference:
Contemporary Materials 2024 - Savremeni Materijali

Applied paper from author