Abstract:
The technology and formula of peony tea beverage prepared under ultrasonic-assisted extraction were optimized by single factor experiments and orthogonal test. The results showed that the optimum preparation conditions of peony tea beverage were determined as follows: material to water ratio of 1∶20(g/mL), ultrasonic extraction power of180 W, extraction time of 30 min, extraction temperature of 70 ℃. The optimal formula of peony tea beverage was determined as follows: ultrasonic extract solution dilution ratio of 1∶11(V/V), acidulant(malic acid∶citric acid∶acetic acid(V/V/V) at a ratio of 1∶1∶1) addition of 0.1%, xylitol addition of 7%, natural plant extract addition of 0.15%. According to this formula, the prepared peony tea beverage presented unique flavor and stable qualities.