The Blocking Effects of Fruit of Rosa davurica Pall.(ROP) on the Formation of Dimethylnitrosamine(DMN) andProtection of liver in Rats

The blocking of fruit of RDP on the formation of DMN in rats, fruit juice of RDP gave 98. 49% blocking effect, whereas ascorbic acid(Vc) solution of the same concentration as in the fruit juice of RDP gave 20. 66y% blocking effect. The better blocking effect of the juice suggested that there might be some of other blocking substances besides Vc in fruit of RDP. fruit of RDP antagonized hepatotoxity of DMN by blocking formation of DMN.