Authors: Chidinma Afam-Mbah,
Lope G. Tabil,
Esteban Valdez
Identifier: CSBE19114
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Published in: CSBE-SCGAB Technical Conferences » AGM Vancouver 2019
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Description: The production of fibre -rich concentrate from the by-product of lentil processing and the analysis of the grinding process was investigated. Two batches of lentil by-product were first concentrated into a cotyledon-rich and seed-coat-rich fractions using a fractionating aspirator. The seed-coat-rich fraction was refined using wet fractionation method. The refined fibre concentrate was dried and milled with Nutrimill, a domestic pin mill, and precision mill, a laboratory scale hammer mill. To have an idea of the milling cost (energy and time) and visual characteristics of the product, the specific energy consumption of the mills, the throughput and colour change of the refined fibre concentrate were analyzed. The refining process increased the TDF of both batches from 39.8 and 57.6% db to 63% and 62% db respectively; it also increased the specific energy and throughput of both mills. The precision mill had a lower specific energy consumption and higher throughput than the nutrimill. A large colour variation (?E) was observed between the starting material of both batches, but the refining drastically reduced this variation. The fibre refining process caused a ?E of 17.88 between batch one starting material, and the precision milled refined fibre. All samples had a reduction in the L* value of the refined fibre concentrate, but the change in a* and b* components were minimal. A visually perceivable difference (?E value) was observed between the nutrimill and precision milled samples with the latter mill producing a lighter coloured concentrate.
Keywords: Lentil, Fibre fraction, grinding, fibre refining, total digestible fibre
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Date: 2019-07-15
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Conference name: CSBE/SCGAB 2019 Annual Conference, Vancouver, BC, 14-17 July 2019.
Session name: Bioenergy and Bioproducts 2
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Type: Presentation
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Publication type: Text.Abstract
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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