SUITABILITY OF THIN-LAYER DRYING MODELS FOR INFRARED DRYING OF PEACH SLICES

Doymaz I.

JOURNAL OF FOOD PROCESSING AND PRESERVATION, vol.38, no.6, pp.2232-2239, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 6
  • Publication Date: 2014
  • Doi Number: 10.1111/jfpp.12277
  • Journal Name: JOURNAL OF FOOD PROCESSING AND PRESERVATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2232-2239
  • Yıldız Technical University Affiliated: Yes

Abstract

The effect of different infrared power levels on drying kinetics of peach slices was investigated. The peach slices dried at 83, 125, 167 and 209W infrared power levels and constant slice thickness of 0.5cm. It was observed that drying characteristics of peach slices were greatly influenced by infrared power. To select the most appropriate thin-layer drying model for drying treatments, 15 mathematical drying models were fitted to the experimental data. Midilli etal. model satisfactorily described the drying kinetics of peach slices. Effective moisture diffusivity ranged from 1.68x10(-10) to 1.68x10(-9)m(2)/s and calculated using the Fick's second law. Activation energy was estimated by a modified Arrhenius-type equation as 4.49kW/kg.