2.2. Rheological properties with different hydrocolloids
The effect of hydrocolloids at 0.5% levels on the mixing profile of
the whole wheat flour dough was studied using a farinograph (Brabender)
according to the standard AACC (2000) methods. Pasting
characteristics of whole wheat flour with hydrocolloids were studied
using micro visco-amylograph (Model No. 803201, Brabender, Duisburg,
Germany) as described in Sudha and Venkateswara Rao (2009).
Texture profile analysis (TPA) of puri dough with hydrocolloids was
measured with two bite TPA using a texture analyzer LR-5K (Lloyd
Instruments Ltd, Hampshire, England) with 5 K load cell. The
maximum compression force required for compressing the sample
(puri dough sheeted to 10 mm thickness and cut in to circular discs of
4 cm) was recorded by the texture analyzer. The sample was placed
on the platform of texture analyzer and compressed up to 50% of its
original height using an 85 mm circular disc probe. The cross head
speed of 50 mm/minwas used to measure the compression force. The
peak force required to compress the sample was recorded in Newton
and was referred as a measure of hardness. The data were collected
for four replicates and average force required to compress the
samples were calculated