Modified Testing Protocol for Texture Analysis of Alginate Cryogel Material
DOI:
https://doi.org/10.30544/MMD36Abstract
Alginate cryogels are biopolymer materials with wide applications in the food industry, where their textural properties play an important role as a key quality parameter. Textural properties are determined based on data obtained from compression tests. Therefore, the adequate design of the compression testing protocol ensures reliable texture results. The influence of crosshead speed on compression test results was investigated by varying the crosshead speed from 0.5 to 5 mm/min. The results indicate that crosshead speed has a negligible effect on compression results. Notably, after 95% deformation at maximum load, the compressed specimen exhibits recovery to a certain degree of its initial height. This suggests that full plastic deformation does not occur in alginate cryogel material, affirming its status as a highly resilient material. Furthermore, textural properties were calculated using two compression cycles with a 5 mm/min crosshead speed and varying degrees of deformation. The obtained data revealed that the testing protocol for texture measurement provides valid results when using data at 30% deformation, regardless of crosshead speed.
Keywords:
Compression test, Mechanical properties, Textural propertiesReferences
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