Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 540942
Title Air bubbles in calcium caseinate fibrous material enhances anisotropy
Author(s) Wang, Zhaojun; Tian, Bei; Boom, Remko; Goot, Atze Jan van der
Source Food Hydrocolloids 87 (2019). - ISSN 0268-005X - p. 497 - 505.
DOI https://doi.org/10.1016/j.foodhyd.2018.08.037
Department(s) Food Process Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Air bubble - Anisotropy - Fibrous material - Mechanical property - Microstructure
Abstract

Dense calcium caseinate dispersions can be transformed into hierarchically fibrous structures by shear deformation. This transformation can be attributed to the intrinsic properties of calcium caseinate. Depending on the dispersion preparation method, a certain amount of air gets entrapped in the sheared protein matrix. Although anisotropy is obtained in the absence of entrapped air, the fibrous appearance and mechanical anisotropy of the calcium caseinate materials are more pronounced with dispersed air present. The presence of air induces the protein fibers to be arranged in microscale bundles, and the fracture strain and stress in the parallel direction are larger compared with the material without air. The effects can be understood from the alignment of the fibers in the parallel direction, providing strain energy dissipation. This study shows that creation of anisotropy is the result of interactions between multiple phases.

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