Mechanical properties of sugar beet are important during harvesting and processing. To potentially correlate mechanical properties with structural features of cell wall polymers, four different Beta varieties (Beta vulgaris L.) were characterized for their mechanical properties and cell wall composition. In addition, the influence of nitrogen fertilization was analyzed. Additional nitrogen fertilization only slightly influenced mechanical properties and cell wall composition. Hardly any structural differences of cell wall polysaccharides were observed for all Beta varieties. Slight differences in alcohol insoluble residue and protein contents, in amino acid profiles of proteins, and in esterification degree of pectins were found. The Beta varieties differed in their contents of cell wall bound phenolic components, and particularly in their dry matter contents. Analyses of mechanical properties of the Beta varieties demonstrated differences in tissue firmness and compressive strength. However, no evidence was found that the observed differences of cell wall composition are responsible for the divergent mechanical properties, with the exception of water contents that were higher in samples with less compressive strength.

中文翻译：

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甜菜（甜菜）品种的力学特性和组成特性及其对氮素的响应

甜菜的机械性能在收获和加工过程中很重要。为了潜在地将机械性能与细胞壁聚合物的结构特征相关联，对四种不同的Beta变种（Beta vulgaris L.）的机械性能和细胞壁组成进行了表征。另外，分析了氮肥的影响。额外的氮肥只对机械性能和细胞壁组成有轻微影响。对于所有Beta品种，几乎未观察到细胞壁多糖的任何结构差异。发现在醇不溶性残基和蛋白质含量，蛋白质的氨基酸谱以及果胶的酯化度方面存在细微差异。该测试版不同品种的细胞壁结合酚成分含量不同，特别是干物质含量不同。Beta品种的机械性能分析表明，组织硬度和抗压强度存在差异。但是，没有证据表明观察到的细胞壁组成差异是造成机械性能差异的原因，但含水量在抗压强度较低的样品中较高。