Structural characteristics and prebiotic effects of Semen coicis resistant starches (type 3) prepared by different methods

被引:20
作者
Bao, Chen [1 ,2 ]
Zeng, Hongliang [1 ,2 ]
Zhang, Yi [1 ]
Zhang, Longtao [1 ,2 ]
Lu, Xu [1 ,2 ]
Guo, Zebin [1 ]
Miao, Song [2 ]
Zheng, Baodong [1 ]
机构
[1] Fujian Agr & Forestry Univ, Coll Food Sci, Fuzhou 350002, Fujian, Peoples R China
[2] Moorepark, Teagasc Food Res Ctr, Fermoy, Cork, Ireland
关键词
Semen coicis resistant starch; Preparation method; Structural characteristics; Bifidobacteria adolescentis; PHYSICOCHEMICAL PROPERTIES; RETROGRADED STARCH; IR SPECTROSCOPY; LACTIC-ACID; FT-IR; BIFIDOBACTERIA;
D O I
10.1016/j.ijbiomac.2017.07.091
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
In order to investigate the effects of different preparation methods on Semen coicis resistant starch, the structural properties and prebiotic effects of autoclaving treatment-purified S. coicis resistant starch (GP-SRS3), ultrasonic-autoclaving treatment-purified S. coicis resistant starch (UP-SRS3), enzyme-autoclaving treatment-purified S. coicis resistant starch (EP-SRS3) and microwave-moisture treatment-purified S. coicis resistant starch (MP-SRS3) were studied compared to high-amylose maize starch (HAMS). Fourier transform infrared spectroscopy and Solid-state C-13 NMR spectroscopy showed all of SRS3 displayed B-type crystallite structure, furthermore, MP-SRS3 and UP-SRS3 showed higher degree of ordered structure and degree of double helical structure compared to other samples. Field emission scanning electron microscopy showed MP-SRS3 displayed deeply layered strips and UP-SRS3 exhibited some cavities. Moreover, S. coicis resistant starch could promote the growth of Bifidobacteria adolescentis better compared to high-amylose maize starch, among these samples. MP-SRS3 exhibited best prebiotic effect, which was possible attributed to its rough surface and double helix structure. B. adolescentis displayed a higher survival rate to the simulated gastrointestinal tract environment in SRS3 medium than that in high-amylose maize starch medium, especially MP-SRS3 and UP-SRS3, which partly contributed to its strips and cavities. Overall, MP-SRS3 could be regarded as a potential prebiotic to promote the growth of B. adolescentis for its structural trait. (C) 2017 Published by Elsevier B.V.
引用
收藏
页码:671 / 679
页数:9
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