Research Progress on the Browning Mechanism and Its Control Technology of Chinese Yam

Chinese yam is a kind of food with high nutritional value. Browning is one of the main problems affecting the quality of Chinese yam during processing and storage. It is of great significance to effectively control the browning of Chinese yam, maintain its color and nutritional characteristics, and improve its shelf life in order to guarantee the quality of Chinese yam and improve the acceptance of consumers. On the basis of previous studies, the mechanism of enzymatic browning and non-enzymatic browning of Chinese yam are described in this paper. The mechanism of enzymatic browning of Chinese yam is explained by three elements of enzymatic browning including phenolic substrate, enzyme and oxygen, and the mechanism of Maillard reaction and non-enzymatic browning of caramelization in processing and storage of Chinese yam are introduced. In this paper, the control effects of different browning control techniques on Chinese yam are summarized, the existing problems are analyzed, and the future prospects are prospected, in order to provide reference for the research and application development of control techniques on Chinese yam browning.