Research Progress on Astringency Detection Sensors: A Review

Astringency is a complex oral sensation caused by substances such as phenolic compounds, which behaves itself as a feeling of dryness, roughness, and constriction in the mouth. With the wide interest in astringency detection methods in vitro, there has been a change from the original qualitative description to quantitative analysis. Sensors play an essential role in detecting astringency in vitro because of their excellent detection performance and operability. The development of new materials and the introduction of biomimetic have increased the detection performance of astringency sensors to new heights. In this review, we classify astringency sensors from the perspective of sensor detection principles, clarify the differences and connections between different types of astringency sensors, and compare the advantages and limitations of each type of sensor. In addition, we also discuss the current and future challenges facing astringency sensors and identify the core challenges in the field of astringency detection while developing forward-looking ideas for their development.