JOURNAL OF FOOD PROCESS ENGINEERING, cilt.44, sa.3, 2021 (SCI-Expanded, Scopus)
Dog rose (Rosa canina L.) is a rosehip used for domestic and industrial purposes. It has great antioxidant compounds such as lycopene and phenolic compounds. In the present study, technological processing was investigated to formulate a functional tea with great nutraceutical compounds. The drying conditions were optimized to have maximum antioxidant properties. The optimum conditions were 68 degrees C and 1 m s(-1), providing the values of 40751.17 mg GAE/kg, 14.17 mg EGC E/100 g, 278.87 mmol TE/g, 44.62 mmol ISE/g, 3051.36 mg/kg, and 13.28 mg/kg for TPC, TFC, DPPH radical scavenging, FRAP, ascorbic acid, and lycopene, respectively. Midilli model described well the drying behavior of Dog rose and, Peleg, Weibull and Vega-galves models predicted well the rehydration kinetics. A two-factor and central composite design was applied to evaluate the effects of decoction time and solid-to-liquid ratio. At the optimal conditions, the Dog rose tea had 98141.28 mg GAE/kg, 2720.66 mg EGC E/100 g, 8616.57 mmol TE/g, 728.24 mmol ISE/g; and 3,358 for TPC, TFC, DPPH radical scavenging, FRAP, and ascorbic acid content, respectively. The findings showed that Dog rose fruit is a great source of nutraceutical compounds and a potential industrial product.