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Effect of Different Extrusion Parameters on Dietary Fiber in Wheat Bran and Rye Bran
Dept. of Molecular Sciences, Uppsala BioCentre; Swedish Univ. of Agricultural Sciences; PO Box 7015 SE-750 07 Uppsala Sweden.
Dept. of Molecular Sciences, Uppsala BioCentre; Swedish Univ. of Agricultural Sciences; PO Box 7015 SE-750 07 Uppsala Sweden.
Lantmännen Ek för R&D; S:t Göransgatan 160 A 104 25 Stockholm Sweden.
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2017 (English)In: Journal of Food Science, ISSN 0022-1147, E-ISSN 1750-3841, Vol. 82, no 6, p. 1344-1350Article in journal (Refereed) Published
Abstract [en]

Wheat bran and rye bran are mostly used as animal feed today, but their high content of dietary fiber and bioactive components are beneficial to human health. Increased use of bran as food raw material could therefore be desirable. However, bran mainly contains unextractable dietary fiber and deteriorates the sensory properties of products. Processing by extrusion could increase the extractability of dietary fiber and increase the sensory qualities of bran products. Wheat bran and rye bran were therefore extruded at different levels of moisture content, screw speed and temperature, in order to find the optimal setting for increased extractability of dietary fiber and positive sensory properties. A water content of 24% for wheat bran and 30% for rye bran, a screw speed of 400 rpm, and a temperature of 130 °C resulted in the highest extractability of total dietary fiber and arabinoxylan. Arabinoxylan extractability increased from 5.8% in wheat bran to 9.0% in extruded wheat bran at those settings, and from 14.6% to 19.2% for rye bran. Total contents of dietary fiber and arabinoxylan were not affected by extrusion. Content of β-glucan was also maintained during extrusion, while its molecular weight decreased slightly and extractability increased slightly. Extrusion at these settings is therefore a suitable process for increasing the use of wheat bran and rye bran as a food raw material.

Place, publisher, year, edition, pages
Wiley , 2017. Vol. 82, no 6, p. 1344-1350
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Food Science
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URN: urn:nbn:se:hig:diva-41207DOI: 10.1111/1750-3841.13741OAI: oai:DiVA.org:hig-41207DiVA, id: diva2:1744568
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Swedish Research Council FormasAvailable from: 2023-03-20 Created: 2023-03-20 Last updated: 2023-03-20Bibliographically approved

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Jonsäll, Anette

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CiteExportLink to record
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