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Food Chemistry

Food Chemistry

IF: 8.5
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The effects of chitosan oligosaccharides on the structure and shelf-life of whole-millet cakes

Published:27 November 2024 DOI: 10.1016/j.foodchem.2024.142267
Yiqing Zhu, Luman Sang, Qun Shen

Abstract

The production of high-quality gluten-free whole-millet cakes presents significant challenges to the food industry. This research examined the impact of chitosan oligosaccharides (COS) on the structural properties and shelf life of whole-millet cakes. Fourier transform infrared spectroscopy and X-ray diffraction analyses revealed that hydrogen bonding between COS and millet starch reduced the relative crystallinity of the cakes. Increased concentrations of COS were associated with a reduction in free water migration within the system, thereby enhancing water retention capacity. A suitable concentration of COS contributed to a more continuous protein network structure, preserving the internal integrity of the cakes. At a COS concentration of 0.8?%, minimal changes were observed in color, hardness, springiness, and moisture loss during storage. Furthermore, the incorporation of COS extended the shelf-life of the cakes by 3–6?days. These findings suggest that COS enhances the quality and storage stability of gluten-free food products.

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