花茶是通过对植物的花或者叶子进行一种更深层次的加工而形成的茶，因其富含多种营养功能成分，对人体的健康有积极地作用。花茶不仅具备养生的功能，同时还有一定的健身功效，因此人们在日常的生活、学习、工作过程中，都喜欢将其作为日常的饮品。近年来，随着经济的快速发展，花茶市场越来越兴盛，花茶种类繁多，有玫瑰花茶、有茉莉花茶、金银花茶、菊花茶、桂花茶和蒲公英等各类花茶百余种。该研究综述了茉莉花茶、玫瑰茶、菊花茶、金银花茶四种常见花茶的营养成分、活性成分及生物活性研究进展。总结发现，上述四种花茶富含蛋白质、维生素、多糖、儿茶素、茶碱类、黄酮类、挥发油类等营养和功能成分，具有抗氧化与延缓衰老、提高免疫力、防治心血管疾病、杀菌抑菌等生物活性。

Scented tea is a kind of tea prepared from flowers or leaves after deep processing. It is rich in nutritional and functional components and has a positive effect on human health. Scented tea not only has the function of maintaining good health, but also has a certain effect on fitness; therefore, people like to use it as a drink in daily life, and during study and work. With the rapid development of the economy in recent years, the scented tea market has become increasingly prosperous. There are more than a hundred kinds of scented teas, including rose, jasmine, honeysuckle, chrysanthemum, osmanthus, and dandelion teas. In this study, the nutritional components, functional components, and bioactivity of jasmine, rose, chrysanthemum, and honeysuckle teas were reviewed. These four kinds of scented teas were found to contain proteins, vitamins, polysaccharides, catechins, theophylline, flavonoids, volatile oils, and other nutritional and functional components, which can effectively resist oxidation, delay aging, improve immunity, prevent and cure cardiovascular diseases, and kill and inhibit bacteria, among other bioactivities.

湖南省教育厅科学研究项目（19C0933）；湖南省自然科学基金青年项目（2020JJ5409）；湖南农业大学人才引进项目；中国博士后自然科学基金面上项目（2020M682568）；国家自然科学基金青年项目（32001680）；湖南省教育厅科学研究项目（20B282）