TY - JOUR
T1 - Kinetic modeling of phenolic compound degradation during drum-drying of apple peel by-products
AU - Henríquez, Carolina
AU - Córdova, Andrés
AU - Almonacid, Sergio
AU - Saavedra, Jorge
N1 - Funding Information:
The authors wish to acknowledge CONICYT (Comisión Nacional de Investigación Científica y Tecnológica) for the doctoral scholarship awarded to C. Henríquez and the SURFRUT Company for the apple peel samples.
PY - 2014/12
Y1 - 2014/12
N2 - The apple peel, a by-product of apple processing, has a high total phenolic content (TPC); however, these compounds can be highly thermosensitive and unstable. Therefore, the aim of this study was to determine the degradation kinetics of the TPC in apple peels during drum-drying as a stabilization and recovery method. Apple peels (Granny Smith) were dried at 110, 120, 130 or 140 °C for 250 s with a constant drum clearance (0.2 mm). TPC degradation exhibited first-order kinetics and their retentions at the end of the process were 73.13% at 110 °C, 57.28% at 120 °C, 43.40% at 130 °C and 21.10% at 140 °C. Finally, empirical models were significantly fitted to predict the TPC as the apple peels reached a certain level of dehydration, which may be useful from the processing standpoint and validate the use of drum-drying as a process tool for the recovery of apple industrial wastes.
AB - The apple peel, a by-product of apple processing, has a high total phenolic content (TPC); however, these compounds can be highly thermosensitive and unstable. Therefore, the aim of this study was to determine the degradation kinetics of the TPC in apple peels during drum-drying as a stabilization and recovery method. Apple peels (Granny Smith) were dried at 110, 120, 130 or 140 °C for 250 s with a constant drum clearance (0.2 mm). TPC degradation exhibited first-order kinetics and their retentions at the end of the process were 73.13% at 110 °C, 57.28% at 120 °C, 43.40% at 130 °C and 21.10% at 140 °C. Finally, empirical models were significantly fitted to predict the TPC as the apple peels reached a certain level of dehydration, which may be useful from the processing standpoint and validate the use of drum-drying as a process tool for the recovery of apple industrial wastes.
KW - Apple-peel
KW - Degradation
KW - Drum-drying
KW - Kinetic
KW - Phenolic compounds
UR - http://www.scopus.com/inward/record.url?scp=84905056463&partnerID=8YFLogxK
U2 - 10.1016/j.jfoodeng.2014.06.037
DO - 10.1016/j.jfoodeng.2014.06.037
M3 - Article
AN - SCOPUS:84905056463
VL - 143
SP - 146
EP - 153
JO - Journal of Food Engineering
JF - Journal of Food Engineering
SN - 0260-8774
ER -