Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates

Textured calcium caseinate extrudates are considered promising candidates in producing fish substitutes. This study aimed to evaluate how the moisture content, extrusion temperature, screw speed, and cooling die unit temperature of the high-moisture extrusion process affect the structural and textur...

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Main Authors: Ziqi Zhao, Zhaojun Wang, Zhiyong He, Maomao Zeng, Jie Chen
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Polymers
Subjects:
Online Access:https://www.mdpi.com/2073-4360/15/5/1292
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author Ziqi Zhao
Zhaojun Wang
Zhiyong He
Maomao Zeng
Jie Chen
author_facet Ziqi Zhao
Zhaojun Wang
Zhiyong He
Maomao Zeng
Jie Chen
author_sort Ziqi Zhao
collection DOAJ
description Textured calcium caseinate extrudates are considered promising candidates in producing fish substitutes. This study aimed to evaluate how the moisture content, extrusion temperature, screw speed, and cooling die unit temperature of the high-moisture extrusion process affect the structural and textural properties of calcium caseinate extrudates. With an increase in moisture content from 60% to 70%, there was a decrease in the cutting strength, hardness, and chewiness of the extrudate. Meanwhile, the fibrous degree increased considerably from 1.02 to 1.64. The hardness, springiness, and chewiness showed a downward trend with the rise in extrusion temperature from 50 °C to 90 °C, which contributed to the reduction in air bubbles in the extrudate. Screw speed showed a minor effect on fibrous structure and textural properties. A low temperature (30 °C) in all cooling die units led to damaged structure without mechanical anisotropy, which resulted from fast solidification. These results show that the fibrous structure and textural properties of calcium caseinate extrudates can be effectively manipulated by adjusting the moisture content, extrusion temperature, and cooling die unit temperature.
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spelling doaj.art-3f9f3b8897664fcf814b9178c2a3c7402023-11-17T08:28:46ZengMDPI AGPolymers2073-43602023-03-01155129210.3390/polym15051292Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate ExtrudatesZiqi Zhao0Zhaojun Wang1Zhiyong He2Maomao Zeng3Jie Chen4State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaTextured calcium caseinate extrudates are considered promising candidates in producing fish substitutes. This study aimed to evaluate how the moisture content, extrusion temperature, screw speed, and cooling die unit temperature of the high-moisture extrusion process affect the structural and textural properties of calcium caseinate extrudates. With an increase in moisture content from 60% to 70%, there was a decrease in the cutting strength, hardness, and chewiness of the extrudate. Meanwhile, the fibrous degree increased considerably from 1.02 to 1.64. The hardness, springiness, and chewiness showed a downward trend with the rise in extrusion temperature from 50 °C to 90 °C, which contributed to the reduction in air bubbles in the extrudate. Screw speed showed a minor effect on fibrous structure and textural properties. A low temperature (30 °C) in all cooling die units led to damaged structure without mechanical anisotropy, which resulted from fast solidification. These results show that the fibrous structure and textural properties of calcium caseinate extrudates can be effectively manipulated by adjusting the moisture content, extrusion temperature, and cooling die unit temperature.https://www.mdpi.com/2073-4360/15/5/1292high-moisture extrusioncalcium caseinatefibrous structuretextural properties
spellingShingle Ziqi Zhao
Zhaojun Wang
Zhiyong He
Maomao Zeng
Jie Chen
Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates
Polymers
high-moisture extrusion
calcium caseinate
fibrous structure
textural properties
title Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates
title_full Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates
title_fullStr Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates
title_full_unstemmed Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates
title_short Effects of Process Parameters on the Fibrous Structure and Textural Properties of Calcium Caseinate Extrudates
title_sort effects of process parameters on the fibrous structure and textural properties of calcium caseinate extrudates
topic high-moisture extrusion
calcium caseinate
fibrous structure
textural properties
url https://www.mdpi.com/2073-4360/15/5/1292
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AT zhiyonghe effectsofprocessparametersonthefibrousstructureandtexturalpropertiesofcalciumcaseinateextrudates
AT maomaozeng effectsofprocessparametersonthefibrousstructureandtexturalpropertiesofcalciumcaseinateextrudates
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