Mesona chinensis polysaccharide accelerates the short-term retrogradation of debranched waxy corn starch

Wenhao Xiao; Jinwang Li; Mingyue Shen; Qiang Yu; Yi Chen; Jianhua Xie

doi:10.1016/j.crfs.2022.09.018

Mesona chinensis polysaccharide accelerates the short-term retrogradation of debranched waxy corn starch

Curr Res Food Sci. 2022 Sep 22:5:1649-1659. doi: 10.1016/j.crfs.2022.09.018. eCollection 2022.

Authors

Wenhao Xiao^{1

2}, Jinwang Li^{1

2}, Mingyue Shen^{1

2}, Qiang Yu^{1

2}, Yi Chen^{1

2}, Jianhua Xie^{1

2}

Affiliations

¹ State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.
² China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, 330047, China.

Abstract

The effect of non-starch polysaccharides on the structural and functional properties of native starch have been extensively studied. However, the effect of non-starch polysaccharides on the structural characteristics of debranched starch, a kind of enzymatic modified starch, remains unclear. The aim of this study is to investigate the effects of Mesona chinensis polysaccharide (MP) on starch retrogradation and structural properties of debranched waxy corn starch (DWS). The results showed that only appropriate addition of MP (0.5 or 1%) can effectively promote the short-term retrogradation of DWS, while excessive MP (3 or 5%) had a negative effect. Gel hardness results revealed that the short-term retrogradation (24 h) of DWS could be divided into two phases. The retrogradation of DWS-MP gels mainly occurred at first stage (0-4 h), which was demonstrated by the rapid increase of gel hardness and relative crystallinity in this stage. In the second stage (4-24 h), DWS-MP gels were more likely to undergo the aggregation of starch granules as proved by SEM and particle size results. The degree of short-range ordered decreased during the total retrogradation stage. Overall, this work aims to provide an insight into the effect of non-starch polysaccharides on the short-term retrogradation of DWS.

Keywords: Debranched waxy corn starch; Gel; Mesona chinensis Benth polysaccharide; Retrogradation.