Journal
INTERNATIONAL JOURNAL OF FOOD ENGINEERING
Volume 10, Issue 1, Pages 167-181Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/ijfe-2012-0063
Keywords
sesame seed; fluidized bed drying; response surface methodology; genetic algorithms
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Optimization of fluidized bed drying of sesame seeds was done by response surface methodology (RSM) and genetic algorithms (GA). Effect of drying parameters (drying temperature (40, 50, 60 degrees C), drying time (60, 120, 180 min), air velocity (1, 1.5, 2 m/s) and bed depth of dryer (1-3 cm) was investigated based on the quality attributes of dried seeds. These factors were optimized with respect to the moisture ratio, color indices, and texture parameters (hardness and fracturability). The obtained models showed very well fitness with experimental data. The coefficients of resulting models with RSM were further optimized using GA. It was revealed that GA-optimized models have better fitness with the experimental results than RSM models. Our results suggest that sesame seed dried in 40-45 degrees C for 115-120 min with 1 m/s air velocity had the lowest moisture content and color changes and the best texture.
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