The Effect of Different Drying Processes on Some Nutritional and Quality Criteria in Tomato Powder

Authors : Ayşe Sena ENGİN, Alper KUŞÇU

Pages : 194-204

View : 17 | Download : 19

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :This study was conducted on the quality of tomato powders obtained from tomatoes dried n the sun insert ignore into journalissuearticles values(SD);, microwave insert ignore into journalissuearticles values(MD); and in the oven at three different temperatures insert ignore into journalissuearticles values(55°C insert ignore into journalissuearticles values(OD 55);, 65°C insert ignore into journalissuearticles values(OD 65); and 75°C insert ignore into journalissuearticles values(OD 75););. Drying processes lasted 20 days, 40 minutes, 8, 7 and 5 hours, respectively, for SD, MD, OD 55, OD 65 and OD 75. The dry matter insert ignore into journalissuearticles values(DM); rate in dried products was between 86.50 and 88.31%. Ash amounts of dried products were determined between 7.64 and 9.57%. At the end of the drying processes, pH values were between 4.40 and 4.64, and the difference was statistically significant insert ignore into journalissuearticles values(p<0.05);. Water activity insert ignore into journalissuearticles values(aw); values in dried products were between 0.31 and 0.35. In addition, there was an increase in the amount of lycopene in all samples after the drying processes. The highest lycopene content was determined in the SD process at 387.83 mg/100 g DM, and the lowest amount was in the OD 65 at 349.59 mg/100 g DM. Regarding the total carotenoid matter, the highest loss was found in the SD process at 43%, and the most negligible loss was in MD at 0.05%. Moreover, the difference between the processes in the total phenolic matter was statistically significant insert ignore into journalissuearticles values(p<0.05);. The lowest loss was 38% in the OD 55 process, and the highest was 46% in the MD process. The highest loss in the total flavonoid matter was in the MD sample at 57%, while the lowest was in the SD at 37%. Sensory low-temperature processes insert ignore into journalissuearticles values(SD 55 and SD 65); were quite good in colour and smell, burnt less, and ordinarily bitter than other processes.
Keywords : Tomato powder, drying, criteria of quality