Molecular Plant Physiology Laboratory, Department of Applied Plant Sciences, Graduate School, Sangji University, Wonju 26339, Republic of Korea.
Wonju-si Agricultural Technology Center, Heungdae-gil 7, Heungup-myeon, Wonju 26339, Republic of Korea.
Int J Mol Sci. 2024 Jan 25;25(3):1505. doi: 10.3390/ijms25031505.
Kiwiberry () is a perennial fruit tree belonging to the family Actinidiaceae. Kiwiberries are known to have an extremely high concentration of sugars, phenolics, flavonoids, and vitamin C, and possess delicious taste and health-promoting properties. Numerous studies have focused on kiwiberry fruits, demonstrating that they possess a higher phytochemical content and greater antioxidant activities than other berry fruits. The purpose of this study was to compare the phytochemical content and antioxidant potential of leaf, stem, root, and fruit extracts from twelve kiwiberry cultivars grown in Wonju, Korea, characterized by a Dwa climate (Köppen climate classification). In most kiwiberry cultivars, the total phenolic (TPC) and total flavonoid (TFC) phytochemical content was significantly higher in leaf and stem tissues, while the roots exhibited higher antioxidant activity. In fruit tissues, the TPC and TFC were higher in unripe and ripe kiwiberry fruits, respectively, and antioxidant activity was generally higher in unripe than ripe fruit across most of the cultivars. Based on our results, among the 12 kiwiberry cultivars, cv. Daebo and cv. Saehan have a significantly higher phytochemical content and antioxidant activity in all of the tissue types, thus having potential as a functional food and natural antioxidant.
软枣猕猴桃（）是猕猴桃科的多年生果树。软枣猕猴桃含糖量极高，同时还富含酚类、类黄酮和维生素 C，口感鲜美，具有保健功效。许多研究都集中在软枣猕猴桃果实上，结果表明其所含的植物化学物质含量更高，抗氧化活性也强于其他浆果。本研究旨在比较产自韩国原州市、具有 Dwa 气候（柯本气候分类）的 12 个软枣猕猴桃品种的叶、茎、根和果实提取物的植物化学物质含量和抗氧化潜力。在大多数软枣猕猴桃品种中，叶片和茎组织的总酚（TPC）和总类黄酮（TFC）含量显著较高，而根部的抗氧化活性较高。在果实组织中，未成熟和成熟的软枣猕猴桃果实中的 TPC 和 TFC 分别较高，而在大多数品种中，未成熟果实的抗氧化活性普遍高于成熟果实。基于我们的研究结果，在 12 个软枣猕猴桃品种中，品种‘大枣’和‘赛罕’在所有组织类型中均具有更高的植物化学物质含量和抗氧化活性，因此具有作为功能性食品和天然抗氧化剂的潜力。
