| Since China's access to WTO, our farm products are frequently frustrated by green technical barriers in export trade, with the apple and apple juice concentrate (AJC) included. Pesticide residues are important factors which are responsible for the safety apple storage. Therefore, studying the method of safety apple storage, eliminating pesticides residue and the determination of the critical control points and the hazard analysis will play a significant role in increasing the international trade.The effects of storage and degradation of pesticide residues of Red Fuji apple by ozone treatment was studied in this paper. The safety apple storage technique by treatment of ozone gas and ozone water was proposed as well as the method of degradation of organophosphorus and pyrethroid by ozone, which can be a reference, for the safety apple storage.The results of the studies are listed as follows:1. The characteristic of physiology and storage of picked apple by ozone treatment was shows that ethylene was increased to 269% in the ozone treated group (ozone concentration at 1.17mg/L for 10 min) contrast with 371% in control group. The results indicated that ozone can decrease ethylene release from apple;Titratable acid of ozone treated apple reduce to 15.3% contrast with 27.6% in control group, and the hardness of ozone treated apple was 2.14% contrast with 2.86% in control group, which indicated that ozone can inhibit titratable acid and fruit hardness decrease of apple in storage.2. The titratable acid and fruit hardness of ozone treated apple was more decrease than that in contrast apple while ozone concentration rise to 22.5mg/m~3(10ppm), moreover, some black spot symptom was presented after 21 days in storage in the treated apple, this indicated that high concentration ozone could possible cause advise effect on apple storage.3. The effect of ozone on decrease in common pesticide of pyrethroid and organophosphorus in water was studied.(1) The ozone water at 1.17mg/L treatment for methamidophos, dichlorovos and monocrotophos for 10 minutes showed that the degradation ratio of methamidophos, dichlorovos and monocrotophos residue were 73.41%, 57.86% and 47.53% respectivelystatistical analysis shows that 10 minutes treatment can reach its maximal effect.(2) The ozone water at 1.17mg/L treatment for fenpropathrin, cypermethrin, cyhalothrin for 10 minutes showed that the degradation ratio of fenpropathrin, cypermethrin and cyhalothrin residues were 93.51%, 85.19% and 84.48% respectively.4. The effect of ozone on decrease in common pesticide of pyrethroid and organophosphorus on apple was studied.(1) The ozone water at 1.17mg/L treatment for apple with methamidophos, dichlorovos, monocrotophos for 10 minutes showed that the degradation ratio of methamidophos,dichlorovos,monocrotophos residue were 61.8%,53.9% and 38.3% respectively statistical analysis shows that 10 minutes treatment can reach its maximal effect.(2) The ozone water at 1.17mg/L treatment for apple with fenpropathrin, cypermethrin, cyhalothrin for 10 minutes showed that the degradation ratio of fenpropathrin, cypermethrin and cyhalothrin residues were 57.96%, 44.44% and 38.07%.5. The safety process of apple storage was proposed according to apple storage characteristic based on the process of apple in refrigeration storage of Baishui Country Hongda Fruit Group: apple collection —>precool —^antiseptic and preservation —?package in wooden crate or plastic box in storage —^control of apple storage temperature, and humidity level(storage temperature is 0.5~0°C, relative humidity is 90~95%, carbon dioxide concentration < 2%) —^graded packet as commercialization apple and delivery of cargo from storage. In combination with HACCP system, analyze each hazard factors which would possibly affect the effect of apple storage, the critical control points were set up and that was an excellent result in practice. It has potential to be applied for the HACCP system of safety apple store in the factory.
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