Cover: Journal of the Chinese Chemical Society 9/2018

In this paper , tyrosinase‐immobilized magnetic nanoparticles (TRY‐MNPs) and 96 well homemade magnetic microplate are used for quickly screening tyrosinase inhibitors. True inhibitors are identified, without interference from antioxidants. Whether the inhibitor is a copper ion chelator or a specific enzyme binder can be identified by adding Cu²⁺ to restore the activity of TRY‐MNPs. More details will be discussed by Dr. Hweiyan Tsai and her co‐workers on page 1075–1081 in this issue.