Brennan and Tudorica (2008) stated that GG acting as a barrier, combined with its affects on digesta viscosity, is sufficient to explain why a reduction in postprandial glycaemic and insulinaemic responses is found when starchy cereal foods containing
guar gum are ingested (Ellis, Apling, Leeds, & Bolster, 1981; Slaughter,Ellis, Jackson, & Butterworth, 2002).