Solar Drying Technologies and Product Quality in Smallholder Food Processing

Abstract

The transition from traditional open sun drying to advanced solar drying technologies represents a critical step toward enhancing food security and economic stability for smallholder farmers in developing regions. Despite the evident advantages of solar dryers in reducing post-harvest losses, a comprehensive understanding of the precise mechanisms linking localized microclimatic conditions within these systems to the final nutritional and organoleptic quality of the processed food remains limited. This paper investigates the intricate relationship between solar drying technologies and product quality using finite element modeling as a primary analytical tool. By simulating the coupled heat and mass transfer processes inherent in the dehydration of organic cellular structures, the study provides a detailed spatial and temporal analysis of temperature distribution and moisture gradients. The findings elucidate how structural design choices in small-scale indirect solar dryers directly influence the retention of heat-sensitive micronutrients and the preservation of desirable physical attributes such as color and texture. Through rigorous computational analysis, this research bridges the gap between theoretical thermodynamics and practical agricultural applications, offering evidence-based recommendations for optimizing drying protocols and equipment design tailored to the constraints and needs of smallholder food processing enterprises.