Mathematical modeling of convective air drying of quinoa-supplemented feed for laboratory rats

Antonio Vega-Gálvez, Alexies Dagnino-Subiabre, Gonzalo Terreros, JESSICA CAROLINA LOPEZ PASTEN, Margarita Miranda, Karina Di Scala

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4 Scopus citations

Abstract

Drying kinetics of quinoa-supplemented feed for laboratory rats during processing at 50, 60, 70, 80 and 90°C was studied and modeled in this work. Desorption isotherm was obtained at 60°C giving a monolayer moisture content of 0.04 g water/g d.m. The experimental drying curves showed that drying process took place only in the falling rate period. Several thin-layer drying equations available in the literature were evaluated based on determination coefficient (r2), sum squared errors (SSE) and Chi-square (χ2) statisticals. In comparison to the experimental moisture values, the values estimated with the Logarithmic model gave the best fit quality (r2 >0.994, SSE < 0.00015 and χ2 < 0.00018), showing this equation could predict very accurately the drying time of rat feed under the operative conditions applied.

Original languageEnglish
Pages (from-to)161-171
Number of pages11
JournalBrazilian Archives of Biology and Technology
Volume54
Issue number1
DOIs
StatePublished - 1 Jan 2011

Keywords

  • Drying kinetics
  • Modeling
  • Quinoa
  • Rat feed
  • Statistical test

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