Abstract Hydrangea macrophylla is an important landscape plant, for its varieties and showy inflorescences. Interestingly, the sepal of hydrangea contains only one anthocyanin, delphinin-3-glucose, which produces a series of color-changing from red to blue. It’s found that the key role in the color-changing of hydrangea sepals is Al3+, while co-pigment contained in sepals also plays an important role. In order to clarify the mechanism of color-changing from red to blue, biochemists proposed a chemical model, and successfully measured the structure of metal-anthocyanin complex which caused the blue-color of sepals.
CHENG Fu-Ying, WANG Yao, WU Xiao-Chun. Chemical Model and Mechanism of Hydrangea Macrophylla Color-Changing[J]. Chinese Journal of Chemical Education, 2022, 43(8): 14-20.
