The relationship between gas transport properties and the histology of apple
The relationship between gas transport properties and the histology of apple
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DOI：
10.1002/jsfa.1768
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发表时间：
2004-08
影响因子：
4.1
通讯作者：
W. Schotsmans;B. Verlinden;J. Lammertyn;B. Nicolai
中科院分区：
文献类型：
--
作者：
W. Schotsmans;B. Verlinden;J. Lammertyn;B. Nicolai
研究了苹果CVS Braeburn和Jonica的皮肤气体扩散阻力、扩散系数与几个组织学特性的关系。外排法和扩散法测得的皮肤阻力值有很大差异。这些差异被认为是由于紧密堆积的组织中格雷厄姆定律的无效，内部气体梯度的存在，以及两种方法测量的组织类型的原因。同一组织中O2和CO2扩散率的品种间差异与细胞间隙体积和细胞大小的差异有关。氧气和二氧化碳扩散率的空间分布与细胞数量、细胞面积、细胞周长和内部自由空间体积有关。皮肤的扩散率相当低，被认为是由皮肤和外层皮质非常致密的组织共同造成的。在储存过程中，扩散率的变化与细胞间隙和细胞形状的变化相一致。版权所有(C)2004化学工业学会
The relation between skin resistance to gas diffusion, diffusivity and several histological characteristics of apple cvs Braeburn and Jonica was investigated. Large discrepancies were found between the skin resistance values measured by the efflux method and a diffusion method. It is believed that these discrepancies are due to the invalidity of Graham's law in tightly packed tissue, the existence of internal gas gradients and the types of tissue measured in the two methods. The differences between cultivars in diffusivity of O2 and CO2 in the same tissue were related to differences in intercellular space volume and cell size. The spatial pattern of the diffusivity of oxygen and carbon dioxide could be linked to the number of cells, the cell area, the cell perimeter and the internal free space volume. The considerably lower diffusivity in the skin was believed to be caused by both the skin and the very dense tissue of the outer cortex. Changes in diffusivity during storage coincided with changes in the amount of intercellular space and in the shape of the cells. Copyright © 2004 Society of Chemical Industry