Broussonetia papyrifera antioxidant activity

The major types of bioactive constituents reported from Broussonetia papyrifera are the prenylated flavonoids, which include compounds of the diphenylpropane, chalcone, flavan, flavanone, flavone, flavonol, and aurone classes (Table 2), Fig. (7). An early study on B. papyrifera resulted in the isolation of two diphenylpropanes, broussonins A (29) and B (30), and a coumarin, marmesin (52), with antifungal activity [39]. Also, a diprenylated diphenylpropane derivative, kazinol F (31) [40], was reported as an antioxidant and tyrosinase inhibitory constituent [34]. 

Two species of the genus Broussonetia, B. kazinoki and B. papyrifera, have been of considerable interest for their ethnomedical uses for the treatment of various human diseases. There is a substantial literature on the utilization of B. papyrifera, in particular, in the paper industry in East Asia. Extracts of Broussonetia species have exhibited various biological activities including antifungal, antiinflammatory, antioxidant, and antispasmodic activities. 

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