Controlling the pasting, rheological, gel, and structural properties of corn starch by incorporation of debranched waxy corn starch
Controlling the pasting, rheological, gel, and structural properties of corn starch by incorporation of debranched waxy corn starch
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DOI：
10.1016/j.foodhyd.2021.107136
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发表时间：
2022
影响因子：
10.7
通讯作者：
Wenhao Xiao;Mingyue Shen;Yanming Ren;Huiliang Wen;Jinwang Li;Liyuan Rong;Wenmeng Liu;Jianhua Xie-Jianhu
中科院分区：
文献类型：
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作者：
Wenhao Xiao;Mingyue Shen;Yanming Ren;Huiliang Wen;Jinwang Li;Liyuan Rong;Wenmeng Liu;Jianhua Xie-Jianhu
本研究旨在研究脱支蜡质玉米淀粉（DWCS）对天然玉米淀粉（NCS）的糊化、流变、糊化和微观结构特性的影响。用 DWCS 替代 NCS 后，糊化性能的峰值、谷值、击穿、衰减和最终粘度均呈线性下降 (R2> 0.98)。然而，稳定比、峰值时间和峰值温度线性增加。这可以解释为DWCS与NCS竞争水，从而抑制NCS糊化过程。 DWCS 的引入降低了 NCS 凝胶的一致性系数 (K)，同时提高了其流动行为指数 (n)。 NCS凝胶的凝胶硬度随着DWCS分数的增加线性下降（R2= 0.98），而粘附性逐渐增加。此外，DWCS可以有效降低短程有序度和相对结晶度的值。扫描电子显微镜显示，当将 DWCS 添加到 NCS 凝胶中时，出现了更加无序的结构。总的来说，这项研究表明 DWCS 是改变和调节 NCS 物理化学和结构特性的有效药物。
This study aimed to investigate the effects of debranched waxy corn starch (DWCS) on the pasting, rheological, gelatinization, and microstructural properties of native corn starch (NCS). Pasting properties showed a linear decrease (R2> 0.98) in peak, trough, breakdown, setback and final viscosity after replacing NCS with DWCS. However, the stability ratio, peak time and peak temperature linearly increased. This could be explained that DWCS competed with NCS for water, thereby inhibiting NCS gelatinization process. The introduction of DWCS decreased the consistency coefficient (K) while increased the flow behavior index (n) of NCS gels. The gel hardness of NCS gels decreased linearly (R2= 0.98) with increasing DWCS fraction, while the adhesiveness gradually increased. Moreover, DWCS could effectively reduce the values of short-range ordered degree and relative crystallinity. Scanning electron microscopy revealed that a more disordered structure was appeared when DWCS was added to the NCS gel. Overall, this study reveals that DWCS is an effective agent for altering and regulation the physicochemical and structural properties of NCS.