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Effect of seed moisture content on flaxseed ( Linum usitatissimum L.) milling and milled product characteristics
Author(s) -
Schorno Anton L,
Manthey Frank A,
Hall Clifford A
Publication year - 2009
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.3726
Subject(s) - hammer , water content , moisture , materials science , particle size , yield (engineering) , composite material , zoology , chemistry , metallurgy , engineering , biology , geotechnical engineering
BACKGROUND: Research was conducted to determine the effect of seed moisture content on flaxseed milling and milled product characteristics. Flaxseed with 55, 80, and 105 g kg −1 moisture contents were milled on a centrifugal cutting mill (CCM) configured with a 0.475 and 9.5 kg min −1 feed rate; a hammer mill configured with a blunt hammer face, 0.35 kg min −1 feed rate, 3.1 mm screen, and 2,795 m min −1 hammer tip speed; and a hammer mill configured with a sharp hammer face, 0.35 kg min −1 feed rate, 2.7 mm screen, and 3,870 m min −1 hammer tip speed. RESULTS: Fine‐particle fraction (≤600 µm) yield was greater from flaxseed with 55 than with 105 g kg −1 moisture content. Surface lipid content correlated positively with fine‐particle yield ( r = 0.82, P = 0.01). At each moisture level, the surface lipid extracted from the fine‐particle fraction was greater with 9.5 than 0.475 kg min −1 configuration of CCM and tended to be greater with the blunt than with the sharp hammer configuration of the hammer mill. CONCLUSION: Results indicated that flaxseed was more difficult to mill to a fine particle size at high than at low moisture content regardless of the mill configuration. Enhanced lipid oxidation was not detected in freshly milled flaxseed. Copyright © 2009 Society of Chemical Industry