Mass transfer, kinetics, and thermodynamics studies during the extraction of polyphenols from Feijoa sellowiana peels

Abstract

Mass transfer mechanism, kinetic behavior, and thermodynamics analysis during the microwave-assisted extraction of total polyphenols from Feijoa sellowiana peels have been investigated with aqueous ethanol (60%, v/v) under several temperature values

Prediction of mass transfer and kinetic behavior during the extraction of high added‐value products from sour cherry ( Prunus cerasus L.) peels

“…k 2 (extraction rate constant) values were 2.07 × 10 −4 , 1.89 × 10 −4, and 3.01 × 10 −5 , where it decreased by temperature. Similar extraction rate constants change was also observed by other studies, where phenolic contents were extracted from different plant materials (Abishli et al, 2021; Albarri et al, 2021).…”

“…As seen in Figure 5, the yield of TPC was enhanced by increasing microwave power together with the temperature of the medium until equilibrium was reached in 180 min. The experimental kinetic data (Table 4) were subjected to the pseudo‐first‐order and second‐order models in order to determine the model’s characteristics and parameters (Abishli et al, 2021; Albarri et al, 2021; Albarri & Şahin, 2021), since pseudo‐first‐order and second‐order models have been frequently used models in processes where natural products were recovered from plant matrixes as reported previously (Harbourne et al, 2009; Rakotondramasy‐Rabesiaka et al, 2009; Sant’Anna et al, 2012). R 2 (coefficient of determination) value has been used to evaluate the model’s applicability (Table 6).…”

“…K e was enhanced by rise in temperature. ∆ H > 0 means that the current MAE system is endothermic, whereas ∆ S > 0 denotes that the system is heading toward disorder and complexity (Abishli et al, 2021; Albarri et al, 2021; Albarri & Şahin, 2021). As for Gibbs free energy change, a negative value shows that the system is spontaneous.…”