L-Theanine: A Unique Functional Amino Acid in Tea (Camellia sinensis L.) With Multiple Health Benefits and Food Applications

Autor: Ming-Yue Li, Hong-Yan Liu, Ding-Tao Wu, Ahmad Kenaan, Fang Geng, Hua-Bin Li, Anil Gunaratne, Hang Li, Ren-You Gan
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Frontiers in Nutrition, Vol 9 (2022)
Druh dokumentu: article
ISSN: 2296-861X
DOI: 10.3389/fnut.2022.853846
Popis: Tea (Camellia sinensis L.) is a very popular health drink and has attracted increasing attention in recent years due to its various bioactive substances. Among them, L-theanine, a unique free amino acid, is one of the most important substances in tea and endows tea with a special flavor. Moreover, L-theanine is also a bioactive compound with plenty of health benefits, including antioxidant, anti-inflammatory, neuroprotective, anticancer, metabolic regulatory, cardiovascular protective, liver and kidney protective, immune regulatory, and anti-obesity effects. Due to the unique characteristics and beneficial functions, L-theanine has potential applications in the development of functional foods. This review summarized the influencing factors of L-theanine content in teas, the main health benefits and related molecular mechanisms of L-theanine, and its applications in food, understanding of which can provide updated information for the further research of L-theanine.
Databáze: Directory of Open Access Journals