Performance of two terms exponential model on the drying kinetics of solar-dried tomatoes (Lycopersicum esculentum L.) treated with and without chemical preservatives

Open sun drying of horticultural produce results in contamination due to microbial and fungal attacks could also be damaged by insects, pests, rodents. Solar through solar collectors is, therefore, an important technique used for the preservation foods extend shelf life produce, thereby reducing attack contamination. Therefore, experiment was carried out study response kinetics solar-dried tomatoes thin layer preservatives on quality attributes. The tomato fruits were treated with natural (honey aloe vera) chemical (citric acid, sodium benzoate, potassium meta-bisulfate). then kept at three (40, 45, 50oC) different temperatures using a parabolic trough air heater purposes. Both temperature preservative levels significantly (P< 0.001) affected traits slices. At 50 oC citric acid as preservative, attained best average moisture lost hr-1, time, rate, total soluble solids (TSS) °Brix, fruit juice pH, titratable acidity (%) vitamin C. Based maximum results, 50°C coating material considered attaining better attributes dried tomatoes. A two-term exponential model ratio found fit correlation regression.