Effect of propolis on the preservation of fresh jujubes
Fresh jujubes were preserved with the coating agent containing propolis.The effects and physiology on fresh jujubes fresh-keeping was estimated by the decay index,weightless rates,firmness,soluble solid contents,titrable acidity contents,vitamin C contents and respiration intensity.The results showed that the treatment of propolis coating could significantly reduce decay index and weightless rates,maintain the firmness of winter jujubes,restrain decreasing of the soluble solid contents,titrable acidity contents and vitamin C contents,block increasing of the respiration intensity of winter jujubes,delayed decrepit of fresh jujubes,and postharvest aging.The best effect of the treatments was received from the treatment with 1.5% propolis which kept fruit freshness quite well.