Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 157, Issue -, Pages 96-105Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.04.096
Keywords
Arrowhead resistant starch; Preparation methods; Structural and physicochemical properties
Funding
- National Key Research and Development Programof China [2016YFD0400303]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Key Technology R&D Program of Zhenjiang [SH2019011]
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Resistant starch (RS) served as a novel functional ingredient has attracted much attention. In this paper, the structure and physicochemical properties of arrowhead resistant starch (ARS) prepared by subcritical water (SW-ARS), ultrasound-subcritical water (USW-ARS), autoclaving (AM-ARS) and ultrasound-autoclaving (UAM-ARS) were investigated. The results showed that the structure of starch granules was completely disrupted and the size of starch granules was obviously increased. SW-ARS, USW-ARS, AM-ARS and UAM-ARS exhibited a B-type crystallinity pattern with different degree of crystallinity. UAM-ARS displayed the highest molecular order with the highest degree of double helixes while SW-ARS, USW-ARS and AM-ARS showed a lower degree of molecular order than that of arrowhead native starch (ANS).The ANS and ARS prepared by four methods possessed high gelation enthalpy in which UAM-ARS had the highest gelation enthalpy, indicating that they had excellent thermostability.Therefore, ANS and the resulting ARS may be a promising starch-based material. All these results are expected to provide information on the preparation and application of ANS and ARS. (C) 2020 Elsevier B.V. All rights reserved.
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