锌铈-壳聚糖复合物对冬枣中有机磷农药的保鲜品质和降解的影响。
Effect of the complex of zincII and ceriumIV with chitosan on the preservation quality and degradation of organophosphorus pesticides in Chinese jujube (Zizyphus jujuba Mill. cv. Dongzao).
机构信息
Laboratory of Food Chemistry and Nutrition, College of Food Science and Technology, Ocean University of China, Qingdao, Shandong, People's Republic of China.
出版信息
J Agric Food Chem. 2010 May 12;58(9):5757-62. doi: 10.1021/jf100537k.
The effects of a novel complex of zinc(II) and cerium(IV) with chitosan film-forming material on the preservation quality of Chinese jujube fruits (Zizyphus jujuba Mill. cv. Dongzao) and degradation of organophosphorus pesticides in the fruits during the room temperature storage were investigated. The results showed that after 18 days of storage, the weight loss, respiratory intensity, and polyphenol oxidase (PPO) activity of fruits treated with the complex were 11.72, 31.51, and 7.07% lower than the control. Furthermore, total soluble solids, ascorbic acid, and polyphenol contents were 15.45, 14.55, and 13.93% higher than the control. The degradation rates of chlorpyrifos and parathion were increased to 97.31 and 92.70% for the complex treatment, which were 30.18 and 17.02% higher than the control, respectively. Therefore, the complex can be applied for preserving Chinese jujube fruits to expand their shelf life and decrease residues of organophosphorus pesticides on the fruits.
研究了新型锌（II）和铈（IV）与壳聚糖成膜材料复合物对冬枣（Zizyphus jujuba Mill. cv. Dongzao）果实贮藏品质及果实中有机磷农药降解的影响。结果表明，贮藏 18 天后，复合物处理的果实失重率、呼吸强度和多酚氧化酶（PPO）活性分别比对照低 11.72%、31.51%和 7.07%。此外，总可溶性固形物、抗坏血酸和多酚含量分别比对照高 15.45%、14.55%和 13.93%。复合物处理可使毒死蜱和对硫磷的降解率分别提高 97.31%和 92.70%，比对照分别提高 30.18%和 17.02%。因此，该复合物可用于冬枣果实的保鲜，以延长其货架期并减少果实中有机磷农药的残留。
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