Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
Volume 57, Issue 5, Pages 2715-2728Publisher
WILEY
DOI: 10.1111/ijfs.15500
Keywords
Glycaemic response; hydration properties; mushroom; physical characteristics; sorghum biscuits
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The study found that incorporating mushroom powders into sorghum flour can increase water absorption capacity and swelling power, decrease pasting viscosities, reduce biscuit diameter, thickness, and weight loss with increased mushroom powder addition, and significantly affect the color parameters of biscuits. Enrichment with shiitake and black ear mushroom can increase the hardness of biscuits, and reduce the predicted glycaemic response of sorghum biscuits.
The nutritional quality of gluten-free products is important to the health of individuals with coeliac disease. Mushrooms are good sources of vitamins, dietary fibres and proteins, and are a low-calorie option that can be used in gluten-free diets to improve their nutritional value. The effects of incorporating dried mushrooms on the hydration and pasting properties of sorghum flour, as well as the physicochemical characteristics and in vitro glycaemic response of sorghum biscuits were studied. Sorghum flour enriched with mushroom powders exhibited higher water absorption capacity and swelling power compared with the control (P < 0.05). The addition of shiitake (Lentinula edodes) mushroom significantly decreased the pasting viscosities, while the addition of black ear (Auricularia auricula) and silver ear (Tremella fuciformis) mushroom increased viscosity values (P < 0.05). Biscuit diameter, thickness and weight loss were reduced with increasing mushroom powder addition, and the colour parameters of biscuits were affected significantly. Enrichment with shiitake and black ear mushroom increased the hardness of biscuits (P < 0.05). Inclusion of mushroom powders significantly reduced the predicted glycaemic response of sorghum biscuits (P < 0.05). Correlation analysis was conducted to illustrate that hydration dynamics (such as water absorption capacity and swelling power) were negatively correlated with glycaemic response (P < 0.001).
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