Modified soluble dietary fiber from black bean coats with its rheological and bile acid binding properties
Modified soluble dietary fiber from black bean coats with its rheological and bile acid binding properties
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来自黑豆皮的改性可溶性膳食纤维，具有流变学和胆汁酸结合特性
DOI：
10.1016/j.foodhyd.2016.07.032
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发表时间：
2017-01-01
影响因子：
10.7
通讯作者：
Yu, Liangli (Lucy)
中科院分区：
文献类型：
--
作者：
Feng, Ziqian;Dou, Wei;Yu, Liangli (Lucy)
研究了碱性过氧化氢（AHP）对提高黑豆皮中可溶性膳食纤维（SDF）含量和功能性的影响。在pH 11、液固比为1：18（w/v）、H2 O2浓度为15%（v/v）条件下处理0.5h后，改性黑豆皮中SDF含量为16.9%。单糖组成证实，改性SDF（M-SDF）中半乳糖醛酸的比例高于原始SDF（O-SDF），并且M-SDF也具有较小的分子量（Mw）（1.24 × 10（6）Da）和较低的zeta-电位（-42.3 mV）。其他结构特征通过FT-IR和TEM进行了表征。在2-6%（w/v）范围内，O-SDF和M-SDF均表现出剪切变稀行为。动态振荡流变仪测定结果表明，在Ca ~（2+）存在下，后者的成胶能力更强。此外，M-SDF在体外具有良好的结合胆汁酸的能力。M-SDF作为一种新型的功能性成分或添加剂在食品工业中具有很大的应用潜力。(C)2016爱思唯尔有限公司版权所有。
Alkaline hydrogen peroxide (AHP) was investigated to enhance the content and functionality of soluble dietary fiber (SDF) extracted from black bean coats. Compared with the content of SDF of original black bean coats 7.8%, the content of SDF of modified black bean coats was 16.9% after treated by 15% H2O2 (v/v) at pH 11 and 1:18 (w/v) as liquid-to-solid ratio for 0.5 h. Monosaccharide composition confirmed that the ratio of galacturonic acid in modified SDF (M-SDF) was higher than that of original SDF (O-SDF), and M-SDF was also with smaller molecular weight (Mw) of 1.24 x 10(6) Da and lower zeta-potential of -42.3 mV. Other structural characters were determined by FT-IR and TEM. In the range of 2-6% (w/v), both O-SDF and M-SDF showed a shear thinning behavior. The latter showed stronger gelation ability at the presence of Ca2+ evaluated by dynamic oscillatory rheometry. Moreover, M-SDF exhibited good abilities of binding bile acids in vitro. It could be concluded that M-SDF had a great potential to be applied as a novel kind of functional ingredient or additive in food industry. (C) 2016 Elsevier Ltd. All rights reserved.