Research Progress on Natural Flavonoid Quercetin in Barley Plant

Abstract

Barley is an annual plant of the grass family barley. As an ancient functional crop, barley has rich nutritional value and a variety of biological active components. It is widely used in many fields such as medicine, food and feed. Barley Quercetin (Quercetin), as a kind of natural flavonoid, widely exists in plants, has antioxidant, anti-inflammatory, anti-cancer and other biological activities, has important research value, and has wide application prospects in various fields. Its biosynthetic pathway is gradually clarified, and the regulatory roles of key enzymes and genes are constantly revealed, which lays a foundation for the application of synthetic biology. However, due to the characteristics of low solubility, low utilization and low stability of quercetin, its use in various fields has great limitations. In recent years, many researchers have made important progress in optimizing quercetin extraction methods and improving the utilization rate of quercetin. In this paper, the research progress of quercetin in barley was reviewed, including its content, distribution, extraction method and biological activity. In this paper, the extraction methods and bioactivity of quercetin were introduced, and the limitations of low solubility and low availability of quercetin were overcome by exploring the genes involved in regulating quercetin synthesis pathway in barley and gene modification to enhance or weaken gene expression. With the development of biological technology, the utilization limitations of barley quercetin will be solved, and the utilization prospects in various fields are very broad