Abstract: Researched the application of natural fresh-keeping agent of complex organic acid (OAA-7) on juicy peach. Results showed that the effect of juicy peach fruit storage treated by 300×10-6 OAA-7 followed by heat treatment(with the temperatures of 45±1℃, and relative humidity ranging from 90% to 95%) for 12 hours and cold storage (1.0±0.5℃) was wonderful. The weight losses of juicy peach fruits decreased during storage. Moreover, this treatment was beneficial to inhibit fruits decay, keep pulp firmness, prevent vitamin C from being oxidized effectively, and it was beneficial to delay the rise of reducing sugar content and soluble solids content. The treatment effectively improved the unchanged-fruit-rate of juicy peach.

Key words: fresh-keeping agent of organic acid, complex organic acid, juicy peach fresh-keeping