State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China.
Shandong Academy of Agricultural Science, Jinan, Shandong 250131, China.
Int J Biol Macromol. 2022 Nov 30;221:1-7. doi: 10.1016/j.ijbiomac.2022.09.004. Epub 2022 Sep 5.
The effects of shell separation pretreatment (SSP) on the physicochemical properties of octenyl succinic anhydride (OSA)-modified starch were investigated in this study. SSP at different temperatures promoted esterification between starch molecules and OSA and thereby achieved a higher degree of substitution (DS). OSA-modified granule shells (OSC) exhibited a rough surface and irregular shape, which were attributed to swelling caused by SSP during modification processes. The paste viscosity and viscoelastic properties of OSC were enhanced after SSP. Both the swelling power and transparency of OSA esterified starch increased with DS values after SSP. The content of resistant starch (RS) among OSA esterified starch increased from 33.18 % to 45.33 %, which mainly occurred when SSP was introduced into the OS starch synthesis process. In summary, SSP at different temperatures promoted the unique physicochemical properties of OSC specimens by increasing their DS values.
本研究探讨了壳分离预处理（SSP）对辛烯基琥珀酸酐（OSA）改性淀粉理化性质的影响。不同温度下的 SSP 促进了淀粉分子与 OSA 之间的酯化反应，从而实现了更高的取代度（DS）。OSA 改性颗粒壳（OSC）表现出粗糙的表面和不规则的形状，这归因于改性过程中 SSP 引起的膨胀。SSP 后，OSC 的糊粘度和黏弹性能得到增强。SSP 后，OSA 酯化淀粉的膨胀能力和透明度均随 DS 值的增加而增加。OSA 酯化淀粉中的抗性淀粉（RS）含量从 33.18%增加到 45.33%，这主要发生在 SSP 被引入到 OS 淀粉合成过程中时。总之，不同温度下的 SSP 通过提高 DS 值来促进 OSC 样品的独特理化性质。
