CHARACTERISATION OF WHEAT-OAT FLOUR EXTRUDATE: PHYSICOCHEMICAL AND B-GLUCAN ATTRIBUTES
文献类型: 外文期刊
第一作者: Hu, S.
作者: Hu, S.;Shu, H.;Yuan, J. L.;Gao, J. Y.;Chen, H. B.;Hu, S.;Shu, H.;Chen, H. B.;Hu, S.;Shu, H.;Gao, J. Y.;Yuan, J. L.;Mu, P. Y.;Sang, W.;Ren, C. Z.;Guo, L. C.
作者机构:
关键词: twin-screw extrusion; whole oat flour; wheat flour; beta-glucan
期刊名称:ACTA ALIMENTARIA ( 影响因子:0.65; 五年影响因子:0.899 )
ISSN: 0139-3006
年卷期: 2020 年 49 卷 4 期
页码:
收录情况: SCI
摘要: The objective of this study was to evaluate the effect of wheat-oat flour ratio on the physical properties and beta-glucan characteristics of extrudates. Results showed that increasing the wheat-oat flour ratio resulted in a decrease in the water solubility index (r(2)=0.8567) and hardness (r(2)=0.9316), whereas the expansion ratio (r(2)=0.9307) and water absorption index (r(2)=0.9061) increased. Wheat flour generally caused an increase in L values from 57.81 to 62.94 providing bright samples. Few cells were observed at high wheat....-oat flour ratios under a scanning electron microscope, and a smooth surface was noted. Meanwhile, the total (r(2)=0.9867) and soluble (r(2)=0.9848) beta-glucan contents were inversely proportional to the wheat-oat flour ratio. Extrudates with added wheat flour had a high molecular weight, but wheat flour had no significant (P<0.05) effect on the viscosity of beta-glucan extracts. Conclusively, incorporation of wheat flour at a wheat-oat flour ratio of 2.33 provides ready-to-eat food based on whole oat flour, on account of improving the texture and providing sufficient beta-glucan contents (0.806 g/100 g) without significantly affecting beta-glucan viscosity.
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