7种蔷薇属药用植物的抗氧化能力、重金属、矿物质和蛋白质含量的评价Assessment of Antioxidant Capacity, Heavy Metal, Mineral and Protein Contents of Some Medicinal Plants7种蔷薇属药用植物的叶片烘干粉碎后使用格哈特公司 全自动杜马斯定氮仪 杜马森Dumatherm检测氮和蛋白质含量称量50毫克植物粉末样品在锡杯中在仪器中900oC 燃烧检测蛋白质含量The leaves were dried in the dark at room temperature (22 ±2°C) and were ground with a grinding mill . After the dried plant samples were ground, nitrogen and protein amounts were determined with the Dumatherm Nitrogen-Protein device (Gerthardt Analytical System, Germany).50 mg of pulverised plant sample was weighed and burned in tin cups at 900oC in the device to determine the amount of protein.