7Kittiphattanabawon P, Benjakul S, Visessanguan W, et al. Gelatin hydrolysate from blacktip shark skin pre- pared using papaya latex enzyme: Antioxidant activity and its potential in model systems[-J]. Food Chemistry, 2012,135(3) :1118-1126.
8Othman O C. Physical and chemical composition of storage-ripened papaya (Carica papaya L. ) fruits of Eastern Tanzania [J]. Tanzania Journal of Science, 2009,35 : 47-56.
