Relations between the apple cortex viscoelastic properties, water dynamics, histological, and chemical characteristics were investigated. Water mobility in four apple genotypes was studied by low-field NMR relaxometry prior and after plasmolysis of the cortex tissue. A discrete and a continuous method for decomposing the multi-exponential T₂ curves were implemented and compared. The results show that both methods of relaxation curve decomposition had close ability to discriminate genotypes before and after plasmolysis. Although the sensitivity of T₂ relaxometry allowed distinguishing microstructures among genotypes even after cellular fluids were mixed and diffused in plasmolyzed tissues, no relaxation component correlated with apple viscoelasticiy. Galactose and arabinose cell wall content were correlated with the storage modulus (E′) prior and after plasmolysis though the correlation signs were opposite and pointed to a potential key role of pectin RGI side chains in regulating apple texture in turgid tissue.

研究了苹果皮层粘弹性，水动力学，组织学和化学特性之间的关系。在皮层组织质解之前和之后，通过低场NMR弛豫法研究了四种苹果基因型的水分迁移率。实施和比较了分解多指数T ₂曲线的离散和连续方法。结果表明，两种弛豫曲线分解方法在溶浆前后均具有区分基因型的紧密能力。虽然T ₂的灵敏度弛豫法即使在细胞液混合并扩散到溶浆组织中也能区分基因型的微观结构，没有弛豫成分与苹果的粘弹性相关。尽管相关迹象相反，但半乳糖和阿拉伯糖的细胞壁含量与溶质前后的储能模量（E'）相关，并指出果胶RGI侧链在调节节水组织中苹果质地方面的潜在关键作用。