| 桃的介电特性和品质关系 |
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| 引用本文： | 唐燕,杜光源,张继澍.桃的介电特性和品质关系[J].食品科学,2012,33(9):68-71. |
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| 作者姓名： | 唐燕 杜光源 张继澍 |
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| 作者单位： | 1.西北农林科技大学生命科学学院
2.西北农林科技大学理学院 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 桃 品质 模型 |
Modeling Peach Quality Changes Based on Electric Property Analysis |
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| TANG Yan,DU Guang-yuan,ZHANG Ji-shu.Modeling Peach Quality Changes Based on Electric Property Analysis[J].Food Science,2012,33(9):68-71. |
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| Authors: | TANG Yan DU Guang-yuan ZHANG Ji-shu |
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| Affiliation: | (1. College of Life Sciences, Northwest A&F University, Yangling 712100, China；
2. College of Science, Northwest A&F University, Yangling 712100, China) |
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| Abstract: | 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(Lp),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. |
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| Keywords: | peach quality model |
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