The aim of the study was to apply water extract of linseed as structure forming agent in gluten free
baking and to assess their influence on rheological properties of the dough and quality of the bread,
especially its staling rate. The analysis of rheological properties of the dough structured with linseed
mucilage proved, that in the absence of external stress the systems reveal rheological properties comparable
with control sample. They are however much more susceptible on mechanical strain. The
replacement of guar gum and pectin with linseed mucilage improved sensory acceptance of the bread
and had limited influence on texture and staling of the bread. The results concerning organoleptic and
physicochemical parameters of the bread indicate that freeze-dried extract of linseed could be applied as
natural and effective structure forming agent in this type of bakery products.
The replacement of hydrocolloids regularly applied as structure
forming agents in gluten free dough, namely guar gum and pectin,
with LM caused changes in dough rheological properties. However
the susceptibility of such systems on external forces was significantly
modified. The bread produced on the basis of LM was more
acceptable in terms of sensory assessment, especially at the highest
applied levels of applied preparation (1.8 and 2.4%). The use of
freeze-dried mucilage had little impact on texture characteristics
and crumb staling in comparison to control. The results clearly
indicate that the applied preparation could be natural and effective structure-forming agent in gluten-free bakery products. The
resulting bread is comparable in texture with other starch-based
recipes, however its sensory assessment is improved, which is reflected
by higher consumer acceptance. It should be added, that the
LM preparation is effective in lower concentration than the applied
mix of commercially available hydrocolloids. Production of such
preparation could be relatively cheap, especially if we consider the
use of off-products obtained during extraction of linseed oil as the
raw material, and alternative drying methods. Taking this into account
the application of LM on industrial scale seems to be
economically reasonable.