In this paper we undertake an experimental and modeling study on mass transfer analysis during infrared drying of quince. In the experimental part, the effects of various drying conditions in terms of infrared radiation power (150-375 W) and distance (5-15 cm) on drying characteristics of quince are investigated. Both the infrared lamp power and distance influenced the drying time of quince slices. Moisture ratios were fitted to 8 different mathematical models using nonlinear regression analysis. The regression results showed that the Logarithmic model satisfactorily described the drying behavior of quince slices with highest R value and lowest SE values. The effective moisture diffusivity increases as power increases and range between 1.15 and 3.72 ×10-8 m2/s. The rise in infrared power has a negative effect on the ΔE and with increasing in infrared radiation power it was increased. Chroma and Hue value values were in ranges between 43.28 and 46.99, 80.82° and 86.14°, respectively.
