使用科技论文的语言改写以下内容：Prepare 10 leaf homogenate with physiological saline and take the supernatant to measure antioxidase after centrifugation Each enzyme’s activities were determined using assay kits foll

A 10% leaf homogenate was prepared utilizing physiological saline, and subsequently, the supernatant was collected following centrifugation to quantify antioxidase. The enzymatic activities of each antioxidase were evaluated through the utilization of assay kits, in accordance with the guidelines stipulated by the manufacturer (Nanjing Jiancheng Bioengineering Institute, Nanjing, China).