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Effects of starch-fatty acid complexes with different fatty acid chain lengths and degrees of saturation on the rheological and 3D printing properties of corn starch

文献类型： 外文期刊

作者： Cheng, Yue 1 ; Gao, Wei 1 ; Kang, Xuemin 1 ; Wang, Jianfei 4 ; Yu, Bin 1 ; Guo, Li 1 ; Zhao, Meng 1 ; Yuan, Chao 1 ; Cui, Bo 1 ;

作者机构： 1.Qilu Univ Technol, Shandong Acad Sci, State Key Lab Biobased Mat & Green Papermaking, Jinan 250353, Peoples R China

2.Qilu Univ Technol, Shandong Acad Sci, Sch Food Sci & Engn, Jinan 250353, Peoples R China

3.Shandong Agr Univ, Dept Food Sci & Engn, Tai An 271018, Peoples R China

4.Shandong Acad Agr Sci, Agr Informat & Econ Res Inst, Jinan 250353, Peoples R China

5.Qilu Univ Technol, Shandong Acad Sci, Daxue Rd, Jinan 250353, Shandong, Peoples R China

关键词： Corn starch; Starch-lipid complex; Fatty acid structure; Rheological properties; 3D printability

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2024 年 436 卷

页码：

收录情况： SCI

摘要： The effect of corn starch-fatty (CS-FA) complexes from varying carbon chain length and degree of unsaturation on the rheological and 3D printing properties of corn CS-FA complex gels. The CS-FA complexes with longer carbon chain lengths and lower saturation enhanced the ability of gels to bind water, promoting the formation of intermolecular hydrogen bonds. The CS-FA complexes inhibit retrogradation and increase the amount of bound water, thereby reducing the structural integrity and transforming the original skeleton structure into a flake-like structure. These changes in gel structure led to lower flow stress and storage modulus for CS-FA gels containing FAs with shorter carbon chain lengths and lower saturation, resulting in reduced "extrusion swelling" of the material and facilitating its extrusion. The decreased "extrusion swelling" of gel improved print line width and printing performance. The CS-FA complex gel-printed product with a 12-carbon chain FA has the greatest printing accuracy, thanks to its moderate G', flow stress, and viscosity. This study provides important information for the CS-FA complexes for the preparation of starch-based 3D printing materials.

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