Abstract: Objective:To study the antitumor effect of jujube peptide perpared by using electromagnetic cracking device.Method:The selected mice were inoculated with tumor cells and divided into 5 groups randomly(n=10),half male and half female,which were administered with the jujube peptide for 10 d continuously.The mice were killed and weighed at the 24th h after the last administration,and the tumors at right axillary fossa were separated.Results:The jujube peptide obviously inhibits the growth of S180,Hep and MFC cells in tumor bearing mice.It can suppress the growth of S180 more significantly and prolong the survival time of the S180 bearing mice even at lower dose.Meanwhile,it can increase the phagocytic index α,clearance index K,thymus coefficient and enhance the transformation function of lymphocyte in vitro.Conclusion:The jujube peptide has obvious antitumor effect.

Key words: jujube peptide perpared by using electromagnetic cracking device, antitumor, immunity