Journal
FOOD CHEMISTRY
Volume 386, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.132849
Keywords
Starch retrogradation; Digestibility; Crystal seed; Nucleation; Crystal growth
Funding
- Scientific Research Innovation Program Xiyuanjiang River Scholarshipof College of Life Sciences, Fujian Normal University [22FSSK004]
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This study investigated the effects of endogenous crystal seed on starch recrystallization and digestibility. The results showed that crystal seed significantly promoted starch reassociation and led to the formation of more compact structures, resulting in lower digestibility.
Crystal seed significantly affected polymers homogeneous or heterogeneous crystallization. However, how starch crystal seed affected recrystallization of gelatinized starch and in turn digestibility were not clearly understood. Herein, effects of endogenous crystal seed on starch recrystallization and digestibility were herein investigated. Structures of retrograded starches characterized by Fourier transform infrared spectroscopy and X-ray diffraction indicated that endogenous A-type crystal seed significantly promoted starch reassociation to form well-defined crystalline structure. Notably, starch crystal seed-mediated retrograded starch contained more compact structures after cooking in comparison with that of retrograded starch mediation without the crystal seed, and therefore the crystal seed-mediated retrograded starch exhibited a lower digestibility. This study preliminarily indicated starch endogenous crystal seed significantly modulate starch retrogradation and digestibility, nevertheless, how recrystallization temperature, the content and crystalline structure of the crystal seed affect recrystallization behaviors of crystal seed-containing starch are part of future work.
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