Abstract
Compared to other cereals, the food use of barley is
limited. However, barley is a highly potential raw
material for health promoting dietary fiber, resistant
starch, minerals and vitamins. Of the major cereal crops,
barley and oats have the highest contents of beta-glucan,
a soluble dietary fiber component in cereal cell walls.
Beta-glucan in barley is distributed throughout the
kernel, making traditional aleurone bran separation
processes inefficient in concentrating barley
beta-glucan. However, the separation can be intensified
by raw material selection.
Beta-glucan incorporation into beverage applications is
challenging due to the high viscosity and structural
instability. By applying methods that reduce beta-glucan
molecular weight and inactivate endogenous glucanolytic
activities, the suitability of beta-glucan in beverages
can be enhanced. From the literature, several methods are
available for reductions of molecular weight of
beta-glucan. These include enzymatic hydrolysis,
mechanical shear stress and acid catalyzed hydrolysis. A
new protocol based on acid catalyzed hydrolysis produces
beta-glucan with narrow molecular weight distribution and
total inactivation of endogenous activities. This
material can be incorporated in beverages to provide
around 10 g of beta-glucan in one serving. The
beta-glucan in this type of product is stabile over wide
range of pH values and temperatures.
Both barley and malt are natural ingredients that could
be used to a greater extent in non-alcoholic beverages,
combined with, for example berries and fruit juices.
Drinks are easy to carry and consume, which make them
convenient, daily supplies of dietary fiber for the
modern consumer.
Original language | English |
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Publication status | Published - 2009 |
MoE publication type | Not Eligible |
Event | The 14th Australian Barley Technical Symposium - Sunshine Coast , Australia Duration: 13 Sep 2009 → 16 Sep 2009 |
Conference
Conference | The 14th Australian Barley Technical Symposium |
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Country/Territory | Australia |
City | Sunshine Coast |
Period | 13/09/09 → 16/09/09 |