基于敲击共振法无损检测新高梨品质的研究

Nondestructive Inspection of Niitaka Pear Quality Based on Acoustic Impulse Response

本试验利用敲击共振方法对新高梨的品质进行了无损检测。首先利用敲击共振检测贮藏期间(冷藏和货架条件下)新高梨的动力学检测参数[无损硬度系数(S)],然后采用传统方法分别测定新高梨的硬度、固酸比等品质指标。分析结果显示,无损硬度系数(S)与各品质指标有较好的相关性,且建立的线性回归模型均达显著水平(P<0.05)。而在梨果内部缺陷检测中,发现内部缺陷梨和完好梨的无损硬度系数之间差异显著,贮藏过程中失重率可作为内部腐烂程度检测的一个重要指标。

Acoustic impulse response technique was used to monitor the qualities of Niitaka pears and prove its validity in detecting fruits quality. Stiffness, the ratio of soluble solid content to titratable acid（SSC/TA） of the pears and the nondestructive stiffness coefficient （S） were measured during the storage time. The results indicated that S correlated well with the quality parameters and the models developed were all at significant levels （ P 〈 0. 05 ）. The stiffness coefficient of inner decay of pears had significant differences with that of the control group and weightlessness rate could be considered an important parameter in detecting degree of inner decay of pears.