Observation and analysis of internal structure of cucumber fruit during storage using X-ray computed tomography
Observation and analysis of internal structure of cucumber fruit during storage using X-ray computed tomography
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X射线计算机断层扫描技术对黄瓜果实贮藏过程中内部结构的观察与分析
DOI：
10.1016/j.eaef.2017.12.004
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发表时间：
2018
影响因子：
--
通讯作者：
Uchino Toshitaka
中科院分区：
文献类型：
--
作者：
Tanaka Fumihiko;Nashiro Kohei;Obatake Wako;Tanaka Fumina;Uchino Toshitaka
在这项研究中，X射线计算机断层扫描（CT）被用来作为一种非破坏性的技术来表征和量化黄瓜果实在储存过程中的内部结构。黄瓜果实的物理性质也进行了破坏性测量，并与X射线吸收率相关，并且在15 ℃和25 ℃以及90%RH下储存7天期间，三维异质内部结构的变化也是可视化的。结果表明，从X射线CT扫描组织图像计算的平均灰度（GS）值与黄瓜果实的密度、孔隙度和弹性模量具有良好的相关性。GS值的峰值高度与密度和孔隙度有关。GS值的标准差也与果实的含水量有关。这些结果表明，X射线CT可以用来评估与水果品质相关的物理特性。黄瓜果实辐射密度在中果皮组织中发生变化，但胎座组织无变化。25 ℃时，中果皮组织中GS含量从果梗向顶端由白色向深色变化。这一结果有助于了解果实贮藏过程中低密度部分的扩展。
In this study, X-ray computed tomography (CT) was used as a non-destructive technique to characterize and quantify the internal structure of cucumber fruit during storage. The physical properties of cucumber fruit were also measured destructively and related to X-ray absorptivity, and also changes in three-dimensional heterogeneous internal structure were visualized during storage at 15 C and 25 C and 90% RH for 7 days. As a result, the average gray scale (GS) value calculated from X-ray CT scanned tissue images indicated good correlations with the density, porosity, and elastic modulus of cucumber fruit. The peak height of the GS value related to the density and porosity. Standard deviation of the GS value was also related to the moisture content of the fruit. These results indicated that X-ray CT can be used to estimate physical properties related fruit quality. It was also revealed that the radiodensity of cucumber fruit changed in the mesocarp tissue but not change in the placenta tissue. GS level in the mesocarp tissue changed from white to dark from the fruit pedicel towards the apex at 25 C. This result is useful to understand the expansion of low density part in fruit during storage.