猕猴桃电特性与生理特性关系研究

为了研究室温(20℃)贮藏下"秦美"猕猴桃电参数与生理参数的相关性,探讨用电特性无损检测生理特性的可行性,用SPSS软件对果实复阻抗等6个电参数和果实硬度等12个生理参数之间进行了相关性分析。结果显示,复阻抗和电容在特征频率下能量化的生理参数多,其中复阻抗能量化硬度等8个生理参数,电容能量化7个生理参数,而电感不能量化任何一个生理参数。阻抗相角量化可滴定酸含量、相对电导率、淀粉含量和纤维素含量的可靠性高。除了淀粉酶活性、PE活性、PG活性、Cx活性之外,其余生理参数都可在特征频率下用敏感电参数来量化。

Relationship between Electrical Properties and Physiological Characteristics of Kiwifruit

The correlation between six electrical parameters such as impedance and twelve physiological parameters such as firmness of fruits were analyzed in order to study the relationship between electric properties and physiological properties of "Qinmei" kiwifruit stored at room temperature(20℃) and to explore the feasibility of nondestructive testing of physiological characteristics by using electric parameters.The results showed that Z can quantify eight physiological parameters such as firmness of fruits,Cp can quantify seven physiological parameters,inductance(Lp) can not quantify any physical parameters.The correlation between impedance angle(θ) and physical parameters(TA content,relative electrical conductivity,starch content,cellulose content and Xyl activity) was generally high at twenty-four frequencies,so it is reliable to use θ to quantize above physiological indexes.All physiological parameters can be quantified by sensitive electrical parameters except amylase activity,PE activity,PG activity and Cx activity.