Topic
Guar
About: Guar is a research topic. Over the lifetime, 1701 publications have been published within this topic receiving 28961 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: Viscous types of dietary fibre are most likely to be therapeutically useful in modifying postprandial hyperglycaemia.
Abstract: To define the type of dietary fibre of fibre analogue with the greatest potential use in diabetic treatment, groups of four to six volunteers underwent 50-g glucose tolerance tests (GTT) with and without the addition of either guar, pectin, gum tragacanth, methylcellulose, wheat bran, or cholestyramine equivalent to 12 g fibre. The addition of each substance significantly reduced blood glucose concentration at one or more points during the GTT and generally reduced serum insulin concentrations. The greatest flattening of the glucose response was seen with guar, but this effect was abolished when hydrolysed non-viscous guar was used. The reduction in the mean peak rise in blood glucose concentration for each substance correlated positively with its viscosity (r = 0.926; P less than 0.01), as did delay in mouth-to-caecum transit time (r = 0.885; P less than 0.02). Viscous types of dietary fibre are therefore most likely to be therapeutically useful in modifying postprandial hyperglycaemia.
1,264 citations
TL;DR: In this paper, the effects of guar and xanthan gums on pasting and rheological properties of native and anionic tapioca starches were studied by using a Rapid Visco-Analyzer (RVA), a differential scanning calorimeter (DSC), a scanning electron microscope (SEM), and a rheometer.
327 citations
Journal Article•
TL;DR: A survey of the inhibitory effects of various plant polysaccharides on PCR amplification of a 974-bp section of rbcL in spinach revealed that most of the polysacchcharides tested were not inhibitory, but two of the acidic poly Saccharides (dextran sulfate and gum ghatti) were inhibitory.
Abstract: A survey of the inhibitory effects of various plant polysaccharides on PCR amplification of a 974-bp section of rbcL in spinach revealed that most of the polysaccharides tested (arabinogalactan, carrageenan, dextran, gum guar, gum karaya, gum locust bean, inulin, mannan, pectin, starch and xylan) were not inhibitory. In contrast, two of the acidic polysaccharides (dextran sulfate and gum ghatti) were inhibitory. The addition of 0.5% Tween 20 reversed the inhibitory effects of gum ghatti (polysaccharide:DNA ratio of 500:1). The inhibitory effect of dextran sulfate (50:1) could be reversed by the addition of Tween 20 (0.25% or 0.5%), DMSO (5%) or polyethylene glycol 400 (5%), but none of these three additives were effective at a 100:1 ratio of dextran sulfate/DNA.
323 citations
TL;DR: In this paper, the effect of non-ionic polysaccharides, including guar gum, tara gum, locust bean gum, and konjac glucomannan, on the performance of wheat starch was investigated.
321 citations
TL;DR: It is concluded that guar improves glucose tolerance predominantly by reducing glucose absorption in the small intestine by inhibiting the effects of intestinal motility on fluid convection.
Abstract: Experiments were carried out in human volunteers to investigate the mechanism by which guar gum improves glucose tolerance. Guar reduced both plasma glucose and insulin responses to an oral glucose load, and delayed gastric emptying. However, there was no correlation between changes in individual blood glucose responses and changes in gastric emptying rates induced by guar. With a steady-state perfusion technique, glucose absorption was found to be significantly reduced during perfusion of the jejunum with solutions containing guar, but returned to control values during subsequent guar-free perfusions. Preperfusing the intestine with guar did not affect electrical measurements of unstirred layer thickness in the human jejunum in vivo. Experiments in vitro established that glucose diffusion out of a guar/glucose mixture was delayed under conditions of constant stirring. We conclude that guar improves glucose tolerance predominantly by reducing glucose absorption in the small intestine. It probably does this by inhibiting the effects of intestinal motility on fluid convection.
286 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 64 |
| 2024 | 91 |
| 2023 | 76 |
| 2022 | 121 |
| 2021 | 49 |
| 2020 | 55 |