Physicochemical and Functional Properties of Starches from Pachyrhizus erosus with Low Digestibility
- 10.2991/efood.k.210626.001How to use a DOI?
- Pachyrhizus erosus; starch; physicochemical properties; rheological properties; in vitro digestion
The search for novel natural ingredients has been stimulated by the food and non-food industries, and roots of Pachyrhizus erosus (jicama) emerges as promising crops for industrial production due to its crispy and succulent flesh and high yield. Therefore, jicama starches from Fujian Province (SFJ) and Guangxi Province (SGX) were isolated and the microstructure, swelling power, crystallinity, thermal property, rheological property, and in vitro digestibility were determined. The starch granules of SFJ and SGX showed polyhedral, spherical or semi-spherical shapes with smooth nonporous surface. SFJ and SGX showed increasing solubility and swelling power with the increasing of temperature. By X-ray diffraction analysis, both had typical A-type crystallinity, but SFJ showed lower relative crystallinity (29.4%) than SGX (35.4%). SFJ with smaller granule sizes and lower relative crystallinity showed weaker thermal stability, lower viscosity, weaker strength of starch gels, and lower Resistant Starch (RS) content. The high contents of RS in SFJ (65.67%) and SGX (70.37%) suggested that jicama is promising low energy food for special purposes.
Jicama starches [Sample from Fujian Province (SFJ) and Sample from Guangxi Province (SGX)] were isolated and characterized by various techniques.
SFJ and SGX showed similar shapes with smooth and nonporous surface.
SFJ had smaller granule sizes and lower relative crystallinity.
SFJ gels possessed weaker thermal stability, lower viscosity, and weaker strength.
SGX had lower resistant starch content by in vitro digestion experiment.
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- Open Access
- This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - JOUR AU - Xiao-Dan Shi AU - Jing-Jing Huang AU - Jin-Zhi Han AU - Shao-Yun Wang PY - 2021 DA - 2021/07/09 TI - Physicochemical and Functional Properties of Starches from Pachyrhizus erosus with Low Digestibility JO - eFood SP - 154 EP - 161 VL - 2 IS - 3 SN - 2666-3066 UR - https://doi.org/10.2991/efood.k.210626.001 DO - 10.2991/efood.k.210626.001 ID - Shi2021 ER -