The leaves of Ampelopsis grossedentata have a long history of use as a health tea and herbal medicine. Data on the distribution of active metabolites in, and antioxidant capacities of, different vine tea tissues remain incomplete. The aim of this work was to investigate the content of metabolites from A. grossedentata different tissues and evaluate the antioxidant capacities of the extraction of the species in vitro and in oil systems: canola oil and sunflower oil. To evaluate the degree of lipid oxidation, the peroxide value (POV) and thiobarbituric acid-reactive substance value (TBARS) were determined, and proton nuclear magnetic resonance (1 H-NMR) was performed. The results revealed a high total flavonoid content in each of the four extractions (>580 mg/g dried weigh). Leaf extractions exhibited higher antioxidant ability, followed by fruit extract and butylated hydroxytoluene (BHT). The POVs of oils bearing extracts of A. grossedentata and BHT maintained less than 21.08 meq/kg oil against to control with 1,406.33 ± 52.63 meq/kg oil on day 32 in canola oil, and 27.87 meq/kg oil comparing to 1,892.96 ± 48.63 meq/kg oil in control on day 24 in sunflower oil. Concurring results were also obtained in TBARS and 1 H-NMR analysis. Our results indicated that these different tissues of A. grossedentata could be a potential antioxidant resource, and this work may contribute to the comprehensive utilization of this species. PRACTICAL APPLICATION: Leaf extracts of Ampelopsis grossedentata showed effective antioxidant properties, followed by the fruit extract, which showed similar activity to that of the synthetic antioxidant of BHT. Moreover, the investigation of different tissues within the plant may contribute to the comprehensive utilization of this species.

中文翻译：

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葡萄茶（Ampelopsisgrossedentata）不同组织在提取菜籽油和葵花籽油中的抗氧化特性评价

Ampelopsisgrossedentata 的叶子作为保健茶和草药有着悠久的历史。关于活性代谢物在不同藤茶组织中的分布和抗氧化能力的数据仍然不完整。这项工作的目的是研究来自 A.grossedentata 不同组织的代谢物的含量，并评估在体外和油系统中提取该物种的抗氧化能力：菜籽油和葵花籽油。为评估脂质氧化程度，测定过氧化值 (POV) 和硫代巴比妥酸反应物值 (TBARS)，并进行质子核磁共振 (1 H-NMR)。结果表明，四种提取物中的每一种都含有较高的总黄酮含量（>580 mg/g 干重）。叶提取物表现出更高的抗氧化能力，其次是水果提取物和丁基化羟基甲苯 (BHT)。含 A.grossedentata 和 BHT 提取物的油的 POV 与对照相比保持低于 21.08 meq/kg 油，第 32 天的菜籽油为 1,406.33 ± 52.63 meq/kg 油，27.87 meq/kg 油，相比之下为 1,892.96 ± 48 meq/kg。 /kg 油在第 24 天控制在葵花籽油中。在 TBARS 和 1 H-NMR 分析中也获得了一致的结果。我们的研究结果表明，A.grossedentata 的这些不同组织可能是一种潜在的抗氧化资源，这项工作可能有助于该物种的综合利用。实际应用：Ampelopsisgrossedentata 的叶提取物显示出有效的抗氧化特性，其次是果实提取物，其显示出与合成抗氧化剂 BHT 相似的活性。而且，