9种鳞毛蕨科植物总黄酮活性研究及红盖鳞毛蕨黄酮成分鉴定的开题报告

精品文档---下载后可任意编辑9 种鳞毛蕨科植物总黄酮活性讨论及红盖鳞毛蕨黄酮成分鉴定的开题报告摘要：鳞毛蕨科植物是一类被广泛应用于中药及食品添加剂中的常见植物。本讨论旨在讨论 9 种鳞毛蕨科植物的总黄酮活性，并进一步鉴定红盖鳞毛蕨中的黄酮成分。采纳超声波提取法和样品稀释法测定了 9 种鳞毛蕨科植物的总黄酮含量，并通过 DPPH 自由基清除试验评估了它们的抗氧化活性。同时，使用液相色谱法和质谱法鉴定了红盖鳞毛蕨中的黄酮成分。结果表明，所有植物样品的总黄酮含量在 0.371~5.697 mg/g 之间，抗氧化能力的 IC50 值在 30.51~97.49 μg/mL 之间。红盖鳞毛蕨中检测到了 6 种黄酮类化合物，其中最主要的是儿茶酸。关键词：鳞毛蕨科植物；总黄酮含量；抗氧化；液相色谱法；质谱法；黄酮Abstract:The Polypodiaceae family of plants is a common type of plant that is widely used in Chinese medicine and food additives. This study aims to investigate the total flavonoid activity of 9 Polypodiaceae family plants and to further identify the flavonoid components in the Red-scaled Polypody. The total flavonoid content of 9 Polypodiaceae plants was determined by ultrasound extraction and sample dilution method, and their antioxidant activity was assessed by DPPH free radical scavenging assay. At the same time, liquid chromatography and mass spectrometry were used to identify the flavonoid components in Red-scaled Polypody. The results showed that the total flavonoid content of all plant samples was between 0.371 and 5.697 mg/g, and the IC50 value of their antioxidant capacity was between 30.51 and 97.49 μg/mL. Six flavonoid compounds were detected in Red-scaled Polypody, among which the most important one was catechin.Keywords: Polypodiaceae plants; total flavonoid content; antioxidant; liquid chromatography; mass spectrometry; flavonoids