Molecular characteristics and physicochemical properties of very small granule starch isolated from Agriophyllum squarrosum seeds

Lihong Han; Shuang Qiu; Shaopan Cao; Yingtao Yu; Shukun Yu; Yuxin Liu

doi:10.1016/j.carbpol.2021.118583

Molecular characteristics and physicochemical properties of very small granule starch isolated from Agriophyllum squarrosum seeds

Carbohydr Polym. 2021 Dec 1:273:118583. doi: 10.1016/j.carbpol.2021.118583. Epub 2021 Aug 21.

Authors

Lihong Han¹, Shuang Qiu², Shaopan Cao³, Yingtao Yu⁴, Shukun Yu⁵, Yuxin Liu⁶

Affiliations

¹ Collaborative Innovation Center for Food Production and Safety, College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China; Ningxia Ruichun Coarse Cereals Co., Ltd., Guyuan, Ningxia 756500, China. Electronic address: hanlihong66@nmu.edu.cn.
² Department of Food Science, Cornell University, Stocking Hall, Ithaca, NY 14853, USA. Electronic address: sq59@cornell.edu.
³ Collaborative Innovation Center for Food Production and Safety, College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China. Electronic address: 20197180@stu.nun.edu.cn.
⁴ Collaborative Innovation Center for Food Production and Safety, College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China. Electronic address: 20207286@stu.nun.edu.cn.
⁵ Collaborative Innovation Center for Food Production and Safety, College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China.
⁶ Collaborative Innovation Center for Food Production and Safety, College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China. Electronic address: 20193853@stu.nun.edu.cn.

PMID: 34560985
DOI: 10.1016/j.carbpol.2021.118583

Abstract

Novel starch resources isolated from accessible botanical origins are of special interest to food scientists in the context of food security. In this study, Agriophyllum squarrosum starches (AS-1, AS-2, and AS-3) were isolated from three ecotypes of A. squarrosum seeds and compared with quinoa starch (QS). The mean particle diameter of AS granules ranged from 1.12 to 1.15 μm, and AS amylopectin had a significantly higher M_w than QS (p < 0.05). Compared with QS, AS samples had more branching and substitution of amylopectin structures. The peak viscosity, breakdown viscosity, and swelling degree of the AS samples were significantly lower than those of QS (p < 0.05). AS showed a lower crystalline degree and higher gelatinization temperatures, and the freshly cooked AS showed a slower digestibility rate than QS. The physicochemical properties and chain profiles of AS facilitate the application of AS and the domestication of A. squarrosum crops.

Keywords: Agriophyllum squarrosum starch; Amylopectin unit chain profiles; Gel permeation chromatography; High-performance anion exchange chromatography; In vitro digestibility.

MeSH terms

Amylopectin / chemistry*
Amylopectin / isolation & purification
Amylose / chemistry*
Amylose / isolation & purification
Caryophyllales / chemistry*
Chenopodium quinoa / chemistry
Molecular Weight
Particle Size
Seeds / chemistry*
Solubility
Temperature
Thermodynamics
Viscosity

Substances

Amylose
Amylopectin