Effect of temperature on the physical changes and drying kinetics in plum (Prunus domestica L.) Požegača variety
Uticaj temperature na fizičke promene i kinetiku sušenja šljive (Prunus domestica L.) sorte požegača
Authors
Živković, MilovanRakić, Sveto
Maletić, Radojka

Povrenović, Dragan

Nikolić, Miloš
Kosanović, Nada
Article (Published version)
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In this study, drying kinetics of autochthonous variety Požegača plum was examined in a laboratory dryer at three temperatures. The whole plum fruits, together with the kernels were subjected to the drying process. The effect of drying has been examined at temperatures of 55, 60 and 75°C, with a constant air velocity of 1.1 m s-1. The corresponding experimental results were tested using six nonlinear regression models. Coefficient of determination (R2), standard regression error (SSE), model correlation coeficient (Vy), as well as the maximum absolute error (ΔY) showed that the logaritmic model was in good agreement with the experimental data obtained. During drying of plums, the effective diffusivity was found to be between 5.6×10-9 for 55°C and 8.9×10-9 m2 s-1 at 75°C, respectively. The physical characteristics of fresh (length 39.64 mm and width 29.15 mm) and dried (length 37.52 mm and width 22.85 mm) plum fruit were determined. Finally, by chemical analysis, the contents of micro- ...and macro-elements (Fe, Mn, Cu, B and N, F, K, Ca, Mg and S) in the skin and flesh of the dried product, prunes, has been established.
Predmet ispitivanja ove studije je kinetika sušenja šljive autohtone sorte Požegača u laboratorijskoj sušari na tri temperaturna režima. Tretirani su celi plodovi šljiva, zajedno sa košticom. Ispitivan je efekat sušenja pri različitim temperaturama 55; 60 i 75°C, praćenjem promene vlažnosti materijala u funkciji vremena sušenja pri stalnoj brzini vazduha od 1,1 m s-1. Eksperimentalni rezultati ovih ispitivanja sušenja testirani su na šest nelinearnih regresionih modela. Koeficijent determinacije (R2), standardna greška regresije (SSE), koeficijent varijacije modela (Vy), kao i maksimalna apsolutna greška ocenjenog modela (ΔY), su pokazali da je Logarithmic model najbolje prilagođen eksperimentalnim podacima. Tokom sušenja plodova šljiva, utvrđen je koeficient difuzije čija se vrednost kretala između 5,6×10-9 za 55°C i 8,9×10-9 m2 s-1 za 75°C, respektivno. Određene su fizičke karakteristike svežih (dužina 39,64 mm i širine 29,15 mm) i sušenih (dužina 37,52 mm i širine 22,85 mm) plodova ...šljive. Hemijskom analizom određen je sadržaj mikro-i makroelemenata (Fe, Mn, Cu, B i N, C, K, Ca, Mg i S) u koži i mesu kod sušenih plodova šljive.
Keywords:
convective drying / moisture content / physical characteristics / Požegača plum / konvektivno sušenje / sadržaj vlage / fizičke karakteristike / šljiva PožegačaSource:
Chemical Industry & Chemical Engineering Quarterly, 2011, 17, 3, 283-289Publisher:
- Association of the Chemical Engineers of Serbia
Funding / projects:
DOI: 10.2298/CICEQ101109013Z
ISSN: 1451-9372
WoS: 000296947800004
Scopus: 2-s2.0-80052906190
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Živković, Milovan AU - Rakić, Sveto AU - Maletić, Radojka AU - Povrenović, Dragan AU - Nikolić, Miloš AU - Kosanović, Nada PY - 2011 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1846 AB - In this study, drying kinetics of autochthonous variety Požegača plum was examined in a laboratory dryer at three temperatures. The whole plum fruits, together with the kernels were subjected to the drying process. The effect of drying has been examined at temperatures of 55, 60 and 75°C, with a constant air velocity of 1.1 m s-1. The corresponding experimental results were tested using six nonlinear regression models. Coefficient of determination (R2), standard regression error (SSE), model correlation coeficient (Vy), as well as the maximum absolute error (ΔY) showed that the logaritmic model was in good agreement with the experimental data obtained. During drying of plums, the effective diffusivity was found to be between 5.6×10-9 for 55°C and 8.9×10-9 m2 s-1 at 75°C, respectively. The physical characteristics of fresh (length 39.64 mm and width 29.15 mm) and dried (length 37.52 mm and width 22.85 mm) plum fruit were determined. Finally, by chemical analysis, the contents of micro- and macro-elements (Fe, Mn, Cu, B and N, F, K, Ca, Mg and S) in the skin and flesh of the dried product, prunes, has been established. AB - Predmet ispitivanja ove studije je kinetika sušenja šljive autohtone sorte Požegača u laboratorijskoj sušari na tri temperaturna režima. Tretirani su celi plodovi šljiva, zajedno sa košticom. Ispitivan je efekat sušenja pri različitim temperaturama 55; 60 i 75°C, praćenjem promene vlažnosti materijala u funkciji vremena sušenja pri stalnoj brzini vazduha od 1,1 m s-1. Eksperimentalni rezultati ovih ispitivanja sušenja testirani su na šest nelinearnih regresionih modela. Koeficijent determinacije (R2), standardna greška regresije (SSE), koeficijent varijacije modela (Vy), kao i maksimalna apsolutna greška ocenjenog modela (ΔY), su pokazali da je Logarithmic model najbolje prilagođen eksperimentalnim podacima. Tokom sušenja plodova šljiva, utvrđen je koeficient difuzije čija se vrednost kretala između 5,6×10-9 za 55°C i 8,9×10-9 m2 s-1 za 75°C, respektivno. Određene su fizičke karakteristike svežih (dužina 39,64 mm i širine 29,15 mm) i sušenih (dužina 37,52 mm i širine 22,85 mm) plodova šljive. Hemijskom analizom određen je sadržaj mikro-i makroelemenata (Fe, Mn, Cu, B i N, C, K, Ca, Mg i S) u koži i mesu kod sušenih plodova šljive. PB - Association of the Chemical Engineers of Serbia T2 - Chemical Industry & Chemical Engineering Quarterly T1 - Effect of temperature on the physical changes and drying kinetics in plum (Prunus domestica L.) Požegača variety T1 - Uticaj temperature na fizičke promene i kinetiku sušenja šljive (Prunus domestica L.) sorte požegača EP - 289 IS - 3 SP - 283 VL - 17 DO - 10.2298/CICEQ101109013Z ER -
@article{ author = "Živković, Milovan and Rakić, Sveto and Maletić, Radojka and Povrenović, Dragan and Nikolić, Miloš and Kosanović, Nada", year = "2011", abstract = "In this study, drying kinetics of autochthonous variety Požegača plum was examined in a laboratory dryer at three temperatures. The whole plum fruits, together with the kernels were subjected to the drying process. The effect of drying has been examined at temperatures of 55, 60 and 75°C, with a constant air velocity of 1.1 m s-1. The corresponding experimental results were tested using six nonlinear regression models. Coefficient of determination (R2), standard regression error (SSE), model correlation coeficient (Vy), as well as the maximum absolute error (ΔY) showed that the logaritmic model was in good agreement with the experimental data obtained. During drying of plums, the effective diffusivity was found to be between 5.6×10-9 for 55°C and 8.9×10-9 m2 s-1 at 75°C, respectively. The physical characteristics of fresh (length 39.64 mm and width 29.15 mm) and dried (length 37.52 mm and width 22.85 mm) plum fruit were determined. Finally, by chemical analysis, the contents of micro- and macro-elements (Fe, Mn, Cu, B and N, F, K, Ca, Mg and S) in the skin and flesh of the dried product, prunes, has been established., Predmet ispitivanja ove studije je kinetika sušenja šljive autohtone sorte Požegača u laboratorijskoj sušari na tri temperaturna režima. Tretirani su celi plodovi šljiva, zajedno sa košticom. Ispitivan je efekat sušenja pri različitim temperaturama 55; 60 i 75°C, praćenjem promene vlažnosti materijala u funkciji vremena sušenja pri stalnoj brzini vazduha od 1,1 m s-1. Eksperimentalni rezultati ovih ispitivanja sušenja testirani su na šest nelinearnih regresionih modela. Koeficijent determinacije (R2), standardna greška regresije (SSE), koeficijent varijacije modela (Vy), kao i maksimalna apsolutna greška ocenjenog modela (ΔY), su pokazali da je Logarithmic model najbolje prilagođen eksperimentalnim podacima. Tokom sušenja plodova šljiva, utvrđen je koeficient difuzije čija se vrednost kretala između 5,6×10-9 za 55°C i 8,9×10-9 m2 s-1 za 75°C, respektivno. Određene su fizičke karakteristike svežih (dužina 39,64 mm i širine 29,15 mm) i sušenih (dužina 37,52 mm i širine 22,85 mm) plodova šljive. Hemijskom analizom određen je sadržaj mikro-i makroelemenata (Fe, Mn, Cu, B i N, C, K, Ca, Mg i S) u koži i mesu kod sušenih plodova šljive.", publisher = "Association of the Chemical Engineers of Serbia", journal = "Chemical Industry & Chemical Engineering Quarterly", title = "Effect of temperature on the physical changes and drying kinetics in plum (Prunus domestica L.) Požegača variety, Uticaj temperature na fizičke promene i kinetiku sušenja šljive (Prunus domestica L.) sorte požegača", pages = "289-283", number = "3", volume = "17", doi = "10.2298/CICEQ101109013Z" }
Živković, M., Rakić, S., Maletić, R., Povrenović, D., Nikolić, M.,& Kosanović, N.. (2011). Effect of temperature on the physical changes and drying kinetics in plum (Prunus domestica L.) Požegača variety. in Chemical Industry & Chemical Engineering Quarterly Association of the Chemical Engineers of Serbia., 17(3), 283-289. https://doi.org/10.2298/CICEQ101109013Z
Živković M, Rakić S, Maletić R, Povrenović D, Nikolić M, Kosanović N. Effect of temperature on the physical changes and drying kinetics in plum (Prunus domestica L.) Požegača variety. in Chemical Industry & Chemical Engineering Quarterly. 2011;17(3):283-289. doi:10.2298/CICEQ101109013Z .
Živković, Milovan, Rakić, Sveto, Maletić, Radojka, Povrenović, Dragan, Nikolić, Miloš, Kosanović, Nada, "Effect of temperature on the physical changes and drying kinetics in plum (Prunus domestica L.) Požegača variety" in Chemical Industry & Chemical Engineering Quarterly, 17, no. 3 (2011):283-289, https://doi.org/10.2298/CICEQ101109013Z . .