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2014•Journal of Shaanxi University of Science & TechnologyRequires access

Study on modification on dietary fiber of apples by screw extrusion

Chen Xue-fen

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Abstract

In this study,the dietary fiber of apple which extracted from apple pomace was used to modify by screw extrusion,aiming to improve the content of soluble dietary fiber(SDF)in it.The results indicated that the content of SDF in apple dietary fiber was significantly improved after extrusion.The optimum conditions of extrusion process were as follows:the water content of 40%,screw rotation speed of 780r/min,and material particle size of 20mesh. Under these conditions,the content of SDF can reach to 24.0%.The differences of hydration properties between non-modified and modified material were also studied.And it was found that WHC,WBC and SC of modified apple dietary fiber were significantly improved compared to the materials.

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What this paper is about

In this study,the dietary fiber of apple which extracted from apple pomace was used to modify by screw extrusion,aiming to improve the content of soluble dietary fiber(SDF)in it.The results indicated that the content of SDF in apple dietary fiber was significantly improved after extrusion.The optimum conditions of extrusion process were as follows:the water content of 40%,screw rotation speed of 780r/min,and material particle size of 20mesh. Under these conditions,the content of SDF can reach to 24.0%.The differences of hydration properties between non-modified and modified material were also studied.And it was found that WHC,WBC and SC of modified apple dietary fiber were significantly improved compared to the materials.

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Available abstract

In this study,the dietary fiber of apple which extracted from apple pomace was used to modify by screw extrusion,aiming to improve the content of soluble dietary fiber(SDF)in it.The results indicated that the content of SDF in apple dietary fiber was significantly improved after extrusion.The optimum conditions of extrusion process were as follows:the water content of 40%,screw rotation speed of 780r/min,and material particle size of 20mesh. Under these conditions,the content of SDF can reach to 24.0%.The differences of hydration properties between non-modified and modified material were also studied.And it was found that WHC,WBC and SC of modified apple dietary fiber were significantly improved compared to the materials.

Key concepts: Pomace, Extrusion, Extrusion cooking, Fiber, Materials science, Food science, Dietary fiber, Composite material

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