Vibrating Reed Method and Nondestructive Acoustic Impulse Response Method for Measuring Textural Quality of Apple Flesh
Vibrating Reed Method and Nondestructive Acoustic Impulse Response Method for Measuring Textural Quality of Apple Flesh
复制标题
振动簧片法和无损声脉冲响应法测量苹果肉质构质量
DOI：
10.2503/jjshs.51.210
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发表时间：
1982
影响因子：
--
通讯作者：
S. Haginuma
中科院分区：
文献类型：
--
作者：
Hiromichi Yamamoto;S. Haginuma
采用振动簧片法和声学脉冲响应法对‘红星’苹果进行了O‘C常温贮藏.振动簧片法测量了苹果果肉薄梁在小幅度弯曲模式下的共振曲线，给出了动态杨氏模数(E’)和损耗模数(E“).根据共振频率和幅值最大值的任意倍峰宽，推导出了E‘和E”的计算公式.E‘和E“分别为10’dyneJcm2和106dyneJcm2，不同贮藏温度下苹果的动态杨氏弹性系数和声学指数差异较大，振动簧片法测得的动态杨氏弹性系数适用于果肉硬度的客观评价，证实了声脉冲响应法用于苹果内在质构品质无损检测的有效性。
Vibrating reed method and acoustic impulse response method were applied to 'Starking Delicious' apples stored at O 'C and room temperature . Vibrating reed method measures resonance curve of thin apple flesh beam in bending mode of small amplitude and gives dynamic Young's modulus (E') and loss modulus (E"). The calculation formulae for E' and E" are derived from resonance frequency and peak width at which the amplitude is any times of its maximum value. E' and E" were in the order of 10' dyneJcm2 and 106 dyneJcm2, respectively. Dynamic Young's modulus and acoustic indices of apples differed significantly between two storage temperatures. Dynamic Young's modulus measured by vibrating reed method was appropriate for objective evaluation of flesh firmness. The usefulness of acoustic impulse response method for nondestructive evaluation of internal textural quality of apples were confirmed.