Rapid preparation of anti-retrogradation starch by choline chloride based deep eutectic solvents: A comparative study.

Int J Biol Macromol

Department of Food Science and Engineering, School of Food Science and Technology, Hunan Agricultural University, No. 1 Nongda Road, Furong District, Changsha, Hunan 410128, China; Hunan Rapeseed Oil Nutrition Health and Deep Development Engineering Technology Research Center, Hunan Agricultural University, No. 1 Nongda Road, Furong District, Changsha, Hunan 410128, China. Electronic address:

Published: November 2024

Legumes are a widespread and cheap source of starch. However, legume starches are prone to retrogradation in applications. Therefore, enhancing the resistance to retrogradation is important to ensure the quality of starch products. In this study, the effects of amines, alcohols, and carboxylic acids deep eutectic solvents (DESs) on the retrogradation properties of pea starch (PS) were investigated. The results showed that the starches treated with carboxylic acid DESs for only 30 min exhibited low paste viscosity, high paste clarity and anti-retrogradation. The carboxylic acid DESs treatment resulted in holes or cracks appearing on the starch surface, a decrease in molecular ordering, relative crystallinity, and amylose content. The thermal enthalpy of starch as well as the pasting viscosity were substantially reduced after the treatment. The paste clarity and the resistance to retrogradation were significantly improved. Conversely, the structure, pasting and retrogradation properties of starch treated with amine and alcohol DESs exhibited only slight differences compared to PS. The carboxylic acid DESs took a short time for the starch modification, and the modified starch paste with low viscosity, high clarity, and resistance to retrogradation. The study could provide an environmentally-friendly and cost-effective method for the preparation of starch with well anti-retrogradation properties.

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http://dx.doi.org/10.1016/j.ijbiomac.2024.136527DOI Listing

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