Research Progress on Bioactive Components, Biological Activities, and Processing Technology of Daylily (Hemerocallis citrina Baroni)

As an excellent food raw material with abundant nutrients, daylily (Hemerocallis citrina Baroni) exhibits promising research and application potential. This article summarizes the major nutrients of daylily and finds that dry daylily is a healthy food with low fat, high protein and rich minerals. In addition, due to the bioactive components, daylily has a variety of biological activities beneficial to human health. On this basis, it also reviews the fresh-keeping storage and drying technologies of daylily, and it indicates that the quality of daylily could be improved via the pretreatment of fresh daylily and the drying and packaging of dry daylily. Finally, it introduces the applications and research direction of daylily in the food industry. This review will provide theoretical basis for the research of bioactive components in daylily, preservation and processing technologies, developments of related functional foods, and other industry applications.