Aloesin is a C-glycosylated chromone compound found in aloe (Liliaceae) that inhibits tyrosinase (IC50 = 0.9 mM) an enzyme responsible for catalyzing the first step of the conversion of tyrosine to melanin.

5-O-Feruloylquinic acid is a potent Sirt1 agonist, it is a potential lead compound that can be further tested in drug development process for diseases associated with aging.

Tropolone a metal chelator possesses weak antioxidative and radical-scavenging properties and shows a strong affinity for ferric ion.