The effect of oat β‐glucan on in vitro glucose diffusion and glucose transport in rat small intestine

Abstract

Oat β-glucan is able to adsorb glucose molecules, inhibit glucose transport, decrease the concentration of available glucose and suppress disaccharidase activities in the small intestine.

Effect of fermentation on content, molecule weight distribution and viscosity of β‐glucans in oat sourdough

“…Overall, long fermentation can decrease the content of soluble β‐glucan. However, long fermentation is not good for oat sourdough because the soluble β‐glucan in oats can reduce glycemic responses after meals (Zhang et al ., ).…”

“…As a result of the rapid growth of L. plantarum , the total β‐glucan content decreased significantly ( P < 0.05) after 8 h of fermentation. When the fermentation time was extended, the β‐glucan level decreased, resulting in health benefits, such as reducing glycemic response (Zhang et al ., ) and lower cholesterol level (Wang & Ellis, ).…”

“…The viscosity of the extracted β‐glucans at the other fermentation point was lower because of a fewer amount of the soluble β‐glucan and the β‐glucan with MW > 10 5 , especially at 12 h of fermentation. In addition, high viscosity had positive impact on the hypoglycaemic (Zhang et al ., ) and hypocholesterolaemic effects (Wang & Ellis, ), and can improve gas retention, producing loaves with a higher specific volume (Peressini et al ., ). In this study, the viscosity of doughs was high at 0 and 8 h of fermentation point.…”

“…Humans do not possess enzymes to split the link of β‐ d ‐glucans (El Khoury et al ., ). In the human intestine, high β‐glucan solubility and high molecular weight (MW) distribution result in increased viscosity, which can delays absorption of glucose and suppresses absorption of cholesterol and reabsorption of bile acids (Anttila et al ., ), that can promotes health benefits, such as improved glycemic response (Zhang et al ., ) and decreased cholesterol level (Wang & Ellis, ). Oat consumption was reported to be of benefit to those suffering from celiac disease (La Vieille et al ., ).…”

Dietary Fiber, Gastric Emptying, and Carbohydrate Digestion: A Mini‐Review

“…The brush border digestive enzymes maltase‐glucoamylase and sucrase‐isomaltase may also be inhibited by dietary non‐starch polysaccharides. According to Zhang et al oat β‐ glucan and guar gum are very effective in this respect. Legume, cabbage, guava fiber, and a range of gums may also inhibit these enzymes …”