2.3.2. Textural properties
The changes in the tensile properties of rice noodles by BGRFs
were investigated by using a texture analyzer equipped with a
Kieffer dough and gluten extensibility rig (TMS-Pro, Food Technology
Co., Virginia, USA). While rice noodle strands were extended
at 200 mm/min, forceetime curves were recorded from which
maximum resistance force to extension (Rmax) and extensibility (E)
were determined.
Also, the firmness of dry rice noodles was measured by a threepoint
bending test. Noodle strands (10 cm) were supported by two
beams at a known distance and the metal probe (0.5 cm width,
2 cm length) was lowered through the samples at 50 mm/min. The
firmness of noodles was determined by measuring the maximum
force required to break the noodle samples.