Guar gum is a common food additive with potential health benefits.
Its efficacy may depend on its physical properties, such as viscosity.
Industrial guar gum preparations vary in form and processing.
Purpose of the Study:
To investigate the relationship between guar gum viscosity and its effect on glucose absorption and insulin response.
To compare the efficacy of different industrial guar gum preparations.
Main Methods:
Viscosity measurements of hydrated guar gum preparations (powdered flour, granulate flour, wax-coated granules) at different temperatures and pH.
Assessing the impact of guar gum on post-prandial blood glucose and insulin levels after a liquid glucose load in humans.
Main Results:
Viscosity varied significantly among guar gum preparations.
No significant differences in post-prandial blood glucose curves were observed.
All preparations significantly reduced post-prandial insulin levels, with powdered and granulate flours showing slightly greater reduction than wax-coated granules.
Lower viscosity correlated with a less pronounced reduction in insulin response.
Conclusions:
The viscosity of hydrated guar gum is a critical factor in its clinical efficacy.
Industrial processing affects guar gum's viscosity and potentially its physiological effects.
Further research is needed to optimize guar gum preparations for therapeutic applications.