桃的介电特性和品质关系  

Modeling Peach Quality Changes Based on Electric Property Analysis

作　　者：唐燕[1] 杜光源[2] 张继澍[1] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100 [2]西北农林科技大学理学院,陕西杨凌712100

出　　处：《食品科学》2012年第9期68-71,共4页Food Science

基　　金：国家自然科学基金项目(30471001);西北农林科技大学博士科研启动基金项目(Z109021124)

摘　　要：以‘秦光2号’油桃为研究对象,对果实的电特性进行研究,同时测定果实的品质指标。结果表明:在测试电频率1MHz条件下,油桃果实的复阻抗(Z)、并联等效电感(Lp)、硬度、可溶性固形物、可滴定酸含量和含水率在室温(25℃)条件下随着贮藏时间的延长不断降低,而并联等效电容(Cp)不断上升。‘秦光2号’油桃果实的电参数(Z、Cp、Lp)和品质参数(硬度、可溶性固形物、可滴定酸和含水率)之间的相关性达到显著水平(P<0.05,P<0.01),对其建立了有效的预测模型(相关系数都达到显著水平),表明可采用介电参数反映桃果实的品质特性。Hioki LCR tester was used to measure the electric properties of Qinguang II peaches. Meanwhile, the quality parameters of Qinguang II peaches were measured under the storage temperature of 25 ℃. The results showed that the impedance （Z）, equivalent parallel inductance （Lv）, firmness, TSS, TA and water content of the peaches revealed an obvious decrease at room temperature with increasing storage time. However, the equivalent parallel capacitance （Cp） exhibited a gradual increase. A significant correlation of electric parameters （Z, Cp, or Lp） and fruit quality parameters was observed （P 〈 0.05）. Moreover, effective prediction models were established for fruit quality parameters with a significant correlation coefficient. In conclusion, electric parameters can indicate peach quality.

关 键 词：桃 品质 模型 

分 类 号：S183[农业科学—农业基础科学] TS255.1[轻工技术与工程—农产品加工及贮藏工程]