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2019, vol. 23, br. 1, str. 6-9
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Kinetika konvektivnog sušenja ekstrakcione pogače kikirikija
Convective drying kinetics of groundnut extraction cake
Sažetak
Kikiriki sadrži vredno jestivo ulje (45-60%), proteine (20-30%), ugljene hidrate (18-20%), esencijalne vitamine i minerale. Seme kikirikija koristi se za proizvodnju imitacije mleka koje sadrži 15,92 g/100 g ukupne suve materije supstance, odnosno 5,74 g/100 g masti, 4,24 g/100 g ugljenih hidrata, 5,58 g/100 g proteina i 0,34 g/100 g pepela. Pogača iz ekstrakcije kikirikija koja se razmatra u ovom radu je konvektivno sušena na temperaturi vazduha za sušenje od 80 °C i 90 °C u različitim vremenskim periodima (0-120 min). Sadržaj vlage u pogači kikirikija iz ekstrakcije iznosio je 63,01 %. Korišćeni su sledeći modeli , kako bi se složili simulacioni i eksperimentalni podaci, dobijeni za kinetiku konvektivnog sušenja pogače kikirikija nakon ekstrakcije: Page, Modifikovana Page, jednostruki i dvostruki eksponencijalni, kubni (sigmoidna), Vega-Galvez i dr. Model Page imao je najbolje podudaranje pri temperaturi vazduha 80 °C, dok je eksponencijalni model imao najbolje podudaranje pri temperaturi vazduha za sušenje od 90 °C, što pokazuje najveći koeficijent determinacije (R2) i niže vrednosti Rmse i Sse.
Abstract
The groundnut contains valuable edible oil (45-60 %), proteins (20-30 %), carbohydrates (18 -20 %), essential vitamins and minerals. Groundnut seeds are used for the production of imitation milk containing 15.92 g /100 g of total solids, i.e. 5.74 g/100 g of fat, 4.24 g/100 g of carbohydrate, 5.58 g/100 g of protein, and 0.34 g/100 g of ash. The groundnut extraction cake examined in this paper was convectively dried at air temperature 80 °C and 90 °C for different periods of time (0-120 min). The moisture content of the groundnut extraction cake totaled 63.01%. The following models were used to fit the simulation and experimental data obtained for the convective drying kinetics of the groundnut extraction cake under consideration: Page, Modified Page, One- and Two -Term Exponential, Cubic (Sigmoid), Exponential, Vega-Galvez, Logistic and Rational. The Page model had the best goodness of fit at air temperature 80 °C, whereas the Exponential model had the best goodness of fit at 90 °C due to the highest coefficient of determination (R2) and lower Rmse and Sse values.
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