Taking Jufeng grape as test material, the effect of preservative of eugenol modified product on postharvest preservation of grape was studied.The results showed that compared with CK1(blank preservative treatment),CK2(eugenol preservative treatment)and CK3(NW20 preservative treatment),soaking time was 3 min with the preservative concentration was 5 %,the emulsifier concentration was 0.1 %,and the weight loss rate was 6.08 %,significantly reduced water loss in grape by 10.16 %,6.51 % and 4.79 %,The rotten rate was 6.14 %,and significantly decrea...