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3D visualization of oil-abundant limon flavedo layer under drying

文献类型： 外文期刊

作者： Shamim, Sara 1 ; Wu, Zhenting 1 ; Tang, Yuling 1 ; Jia, Jingru 1 ; Liu, Chunju 2 ; Wang, Haiou 3 ; Zheng, Fangcheng 4 ; Ba, Long 1 ;

作者机构： 1.Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Digital Med Engn, Nanjing 210096, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Peoples R China

3.Nanjing Xiao Zhuang Univ, Sch Food Sci, Nanjing 211171, Peoples R China

4.Jiangsu Ind Technol Res Inst, Mat Acad, Suzhou 215133, Peoples R China

关键词： Citrus lemon; X-ray micro CT; 3D visualization; Freeze-drying; Image processing

期刊名称：JOURNAL OF FOOD ENGINEERING （ 影响因子：5.5； 五年影响因子：5.7 ）

ISSN： 0260-8774

年卷期： 2024 年 370 卷

页码：

收录情况： SCI

摘要： This study investigated the transformations of lemon flavedo tissues during freeze-drying based on highresolution X-ray micro-computed tomography (mu-CT) and confocal laser scanning microscopy (CLSM). Contrast-enhanced segmentation, traversal statistic algorithmic analysis, and 3D visualization of lemon peel texture are studied. To avoid pseudo-imaging caused by precipitation of contrast enhancer, low concentration cesium iodide was used to improve X-ray contrast and decrease enlarged inter-cellular region. X-ray mu-CT showed the precipitation of contrast enhancers at the intercellular boundary after freeze-drying. The grayscale thresholding method was presented as the most suitable segmentation method for detecting cell walls due to the high noise level caused by low contrast enhancer concentration in the reconstructed images. The faster water loss at the primary drying stage caused the disintegration of oil glands and induced high porosity of 0.7 % in fresh to 0.84 % in 0.5 h freeze-dried. The results suggest that noise filtering based on voxel statistics provides an efficient approach for the inter and intra-cellular microstructural analysis of excessively watery plant tissues with low contrast enhancer concentration.

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