Comparative study on the interaction between native corn starch and different hydrocolloids during gelatinization
文献类型： 外文期刊
作者： Zhang, Yayuan 4 ; Gu, Zhengbiao 2 ; Zhu, Ling 1 ; Hong, Yan 1 ;
作者机构： 1.Jiangnan Univ, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
2.Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
3.Jiangnan Univ, Synerget Innovat Ctr Food Safety & Nutr, Wuxi 214122, Jiangsu, Peoples R China
4.Guangxi Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Nanning, Guangxi Provinc, Peoples R China
关键词： Corn starch; Hydrocolloid; Gelatinization
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）
ISSN： 0141-8130
年卷期： 2018 年 116 卷
页码：
收录情况： SCI
摘要： The effect of hydrocolloids (Arabic gum, guar gum, xanthan gum) on the thermal, rheological, and microstructural changes of corn starch during gelatinization was studied by combining multiple analytical techniques. Arabic gum located in the continuous phase had no significant delaying effect on starch gelatinization. A two phase system could be directly observed by scanning electron microscopy. The analysis of variance suggested that xanthan gum could restrict the swelling of starch granules and the destruction of granule structure more effectively than other hydrocolloids tested. Morphologies of corn starch granules formed with hydrocolloids showed that xanthan gum promoted the association between starch granules. Compared to xanthan gum, starch granules were more swollen in the presence of guar gum during heating, thus the increase in hydrocolloid concentration in the continuous phase results from an excluded volume effect was more pronounced. Overall, the results suggest that hydrocolloids could effectively restrict the swelling of starch granules, depending on hydrocolloid type, owing to the efficient thickening property. A synergistic increase in paste viscosity occurred as a result of a combination of intermolecular interactions and phase separations. These findings may thus provide a useful basis for the study of other types of starch/hydrocolloid mixtures and concentrations. (C) 2018 Elsevier B.V. All rights reserved.
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