Department of Chemistry and Bioscience, Section of Chemistry, Aalborg University, Fredrik Bajers Vej 7H, 9220, Aalborg, Denmark.
Lantmännen Unibake Denmark, Oensvej 28, Hatting, 8700, Horsens, Denmark.
Sci Rep. 2021 Mar 5;11(1):5349. doi: 10.1038/s41598-021-84959-3.
Alveograph analysis is an established method for flour characterisation, and several alveograph parameters have been introduced over the years. Typically, ten parameters are found for every analysis from the air pressure curve in the modern versions of the alveograph, but the relationships between the parameters and their potential redundancy are not well described in the literature. In this work, an overview of the parameters is provided, including how they are found and what they may represent, and the integral relationship between the parameters was investigated using Pearson correlation analysis of the parameters from 532 pressure curves. The parameters G (swelling index), Dmax (maximum of first derivative), SH (strain hardening index) and K (strength coefficient) exhibited very strong correlations with other alveograph parameters (r > 0.97), and these parameters do therefore not provide additional information. The parameters P (maximum overpressure), L (abscissa at rupture), W (deformation energy), P/L (configuration ratio), Ie (elasticity index) and Dmin (minimum of first derivative) on the other hand, represent a relatively basic set of parameters that uniquely characterises various parts of the pressure curves and thus the dough rheology/physics during dough inflation. Nevertheless, even between this basic set of parameters relatively strong correlations were found, signifying that they are interrelated, as they all are affected by changes in the dough constituents.
粉质仪分析是一种用于描述面粉特性的成熟方法，多年来已经引入了多个粉质仪参数。通常，在粉质仪的现代版本中，从气压曲线上可以找到每一次分析的十个参数，但文献中并没有很好地描述这些参数之间的关系及其潜在的冗余性。在这项工作中，提供了对这些参数的概述，包括它们是如何被找到的以及它们可能代表什么，并且使用皮尔逊相关分析研究了 532 条压力曲线的参数之间的积分关系。参数 G（膨胀指数）、Dmax（一阶导数最大值）、SH（应变硬化指数）和 K（强度系数）与其他粉质仪参数具有很强的相关性（r>0.97），因此这些参数没有提供额外的信息。另一方面，参数 P（最大过压）、L（破裂时的横坐标）、W（变形能）、P/L（结构比）、Ie（弹性指数）和 Dmin（一阶导数最小值）代表了一组相对基本的参数，它们独特地描述了面团膨胀过程中压力曲线的各个部分，从而描述了面团的流变性/物理学。尽管如此，即使在这组基本参数之间也发现了较强的相关性，这表明它们是相互关联的，因为它们都受到面团成分变化的影响。
