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Citric acid and sucrose pretreatment improves the crispness of puffed peach chips by regulating cell structure and mechanical properties

文献类型： 外文期刊

作者： Liu, Chun-ju 1 ; Xue, You-lin 3 ; Guo, Jia 1 ; Ren, Han-ci 1 ; Jiang, Song 2 ; Li, Da-jing 1 ; Song, Jiang-feng 1 ; Zhang 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Peoples R China

2.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Jiangsu, Peoples R China

3.Liaoning Univ, Coll Light Ind, Shenyang 110036, Peoples R China

关键词： Pretreatment; Puffing drying; Crispness; Cell structure; Mechanical properties

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：4.006； 五年影响因子：4.385 ）

ISSN： 0023-6438

年卷期： 2021 年 142 卷

页码：

收录情况： SCI

摘要： Crispness is an important textural attribute of puffed snacks. Impregnation pretreatment is used to regulate the texture of puffed products by changing the cell structure and mechanical properties. In this study, the influence of citric acid and sucrose pretreatment on the cell structure, cell wall components, and mechanical properties of peach slices before puffing drying (heat-pressed slices) was evaluated to understand how citric acid and sucrose pretreatment affects the pore structures and texture characteristics of peach chips with improved crispness. Cell wall degradation, cell structure morphology and mechanical properties before puffing drying interacts to govern the pore morphology and texture characteristics of peach chips. Micrographs of heat-pressed slices showed swollen structures for Cit (citric acid) treated samples and compacted structures for Cit + Suc (citric acid and sucrose) and Cit + Suc + Sdp (citric acid, sucrose and sodium dihydrogen phosphate) treated samples. An increased elastic modulus and decreased viscosity index were observed in all Cit-, Cit + Suc- and Cit + Suc + Sdp-treated samples. After puffing drying, Cit prompted the generation of large pores with low hardness, and Suc and Sdp enhanced the emergence of uniform and small pores with increased hardness. Therefore, crispness was attained by regulating crumbly texture through Cit and regulating hard texture through Suc and Sdp.

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