Antioxidant polyphenols from fruits of the Myrtle family

桃金娘科（桃金娘科）的许多种类是热带和亚热带世界流行的食物。此外，从南美到东南亚的不同传统做法中，有些被用作医药。两种金银花属植物（桃金娘科）的果实在1,1-二苯基-2-苦味酰肼（DPPH）测定中显示出较强的抗氧化活性，随后对金银花亚族相关植物的民族医学和化学分类研究表明，这些果实含有黄酮类或其他多酚类化合物，对人体生物分子具有氧化保护作用。本研究将利用DPPH法分析该分类群中10种常见食用物种的果实的抗氧化活性。最有效的提取物将被更详细地研究，以分离和鉴定特定的多酚类抗氧化植物化学物质。新的抗氧化化合物将被发现，其化学结构将被充分阐明。然后，这项研究将使用开发的分析工具仔细观察由最活跃的水果制成的饮料和醋，以确定是否可以在商业产品中检测到水果中有益的植物化学物质。

Many species of the Myrtle family (Myrtaceae) are popular edibles throughout the tropical and subtropical world. In addition, some are used medicinally in divergent traditional practices from South America to Southeast Asia. The fruits of two species of Eugenia (Myrtaceae) have shown a strong antioxidant activity in the 1,1-diphenyl-2- picrylhydrazyl (DPPH) assay, and subsequent ethnomedical and chemotaxonomic study of related plants in the subtribe Eugeniinae have led to the hypothesis that these fruits contain flavonoids or other polyphenolic compounds that exhibit an oxidative protection to biomolecules in humans. The fruits of ten popular edible species from this taxa will be analyzed for antioxidant activity using the DPPH assay. The most active extracts will be studied in greater detail to isolate and identify specific polyphenolic antioxidant phytochemicals. It is expected that novel antioxidant compounds will be discovered, and their chemical structures will be fully elucidated. This research will then use the analytical tools developed to look closely at beverages and vinegar made from the most active fruit to ascertain whether the beneficial phytochemicals in the fruit can be detected in commercial products.