Evaluation of Antioxidant Activity in Vitro of Polyphenols from Toona Sinensis Seeds Using RSM Optimized Conditions

Abstract

Abstract. The aim was to establish a method for extracting polyphenols from Toona sinensi Seeds (PTSS) and evaluate antioxidant properties. The study selected the polyphenols extraction yield as processing parameters and volume fraction, ratio of liquor to material, extraction time and extraction power as independent variables and was carried out by response surface methodology(RSM).The optimal ultrasound-assisted extraction (UAE)yield of 2.64mg/g was obtained with a volume fraction of 43%,a ratio of liquor to material of 19:1,an extraction time of 13 min and the use of 211w ultrasonic power. PTSS has a certain antioxidant capacity in vitro. The UAE is stable and reliable. The results indicate that Toona Sinensis Seeds is a medical and edible dual purpose material with potential antioxidant properties.