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Abstract
Studies on the Effect of Different Solar Dryers on the Vitamin Content of Tomato (Solanum lycopersicon)
Samples of tomato fruits were dried under four different conditions: open-air sun drying method and by using three different models of integral passive solar dryers which include Green house solar dryer, Sun-tracking solar dryer and Latitudinal box solar dryer. The fresh tomato samples and the dried samples were analysed for vitamins A, C and E. The results showed a significant difference in the concentrations of Vitamins A, C and E between the fresh and the dried samples for all drying systems. While Vitamins C reduced in concentration for all dried samples, Vitamins A and E increased significantly with open-air system having the highest value in vitamin C concentration while latitudinal box dryer gave the best result in terms of vitamins A and E retention. All year round availability of tomato could be enhanced by chipping and drying. Packaging and marketing of dried chips in small quantities could be a lucrative entrepreneurial endeavour for the business minded.