Structural, rheological and functional properties of modified soluble dietary fiber from tomato peels

被引：65

作者：

Li, Na ^{[1
]}

Feng, Ziqian ^{[1
]}

Niu, Yuge ^{[1
]}

Yu , Liangli ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Food & Nutraceut Sci, Sch Agr & Biol, Shanghai 200240, Peoples R China

[2] Univ Maryland, Dept Nutr & Food Sci, College Pk, MD 20742 USA

来源：

FOOD HYDROCOLLOIDS | 2018年 / 77卷

基金：

美国国家科学基金会;

关键词：

Tomato peels; SDF; AHP; Rheology; Functional properties; IN-VITRO; BILE-ACID; DEOILED CUMIN; PARTICLE-SIZE; EXTRACTION; POLYSACCHARIDES; PROTEIN; POMACE; WASTE; VISCOSITY;

D O I：

10.1016/j.foodhyd.2017.10.034

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Modified soluble dietary fiber (M-SDF) were extracted from tomato peels by alkaline hydrogen peroxide (AHP). The modified conditions were 20% H2O2 solution (v/v), pH 10, solid-liquid rate as 1: 15 (w/v) and reaction time as 1.5 h. The extraction yield of M-SDF increased three times than that of original SDF (O-SDF). M-SDF showed smaller molecular weight of 1.24 x 10(6) Da and lower zeta-potential of - 34.3 mV than those of O-SDF. Monosaccharide composition, FT-IR and TEM were used to investigate the differences of structural characteristic between O-SDF and M-SDF. Rheological properties of M-SDF at different pH and ions types were also determined. The results showed that M-SDF could form the ideal gel at pH 5 with Ca2+ existed. M-SDF also showed stronger gelation ability with Ca2+ than O-SDF. M-SDF exhibited excellent capacities of water holding, glucose adsorption and binding bile acids. M-SDF of tomato peels was suggested to be used as a novel kind of functional hydrocolloid or additive in food industry. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：557 / 565

页数：9

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