Study on Activity of Defense Enzyme and Storage Effects in Harvested Peach by UV-C Treatment

Abstract

Abstract: The disease incidence and disease index were counted and the activity of defense enzyme was analyzed in harvested "DA JIU BAO" peach after different UV-C doses irradiation in order to discover a new preservation method of fruits and vegetables which is no chemical remain in this paper. The results showed that 0.25～0.5 kJ/m2 dose UV-C irradiation can reduce the disease incidence and disease index, retard disease incidence 10～16 days; infection rate can decrease by significantly 5.1 and 3.2 fold with disease resistance of fruit induced. PPO, PAL and β-1,3 glucanase activity are enhanced by 0.25～0.5 kJ/m2 dose UV-C irradiation, these defense enzymes play important role in inducing disease resistance of harvested fruits .

Key words: UV-C, peach, activity of defense enzyme, storage effects

RONG Rui-Fen, GUO Kun, LI Jing-Xia, WU Jing-Ping, LI Hong-Yu. Study on Activity of Defense Enzyme and Storage Effects in Harvested Peach by UV-C Treatment[J]. FOOD SCIENCE, 2007, 28(8): 505-509.

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Study on Activity of Defense Enzyme and Storage Effects in Harvested Peach by UV-C Treatment

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