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Ultrasound-assisted enzymatic extraction of soluble dietary fiber from fresh corn bract and its physio-chemical and structural properties

文献类型： 外文期刊

作者： Geng, Ningning 1 ; Song, Jiangfeng 1 ; Luo, Shuwei 2 ; Li, Ying 1 ; Wu, Gang 4 ; Liu, Chunquan 1 ; Wu, Caie 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Peoples R China

2.Nanjing Forestry Univ, Coll Light Ind & Food Engn, Nanjing, Peoples R China

3.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang, Jiangsu, Peoples R China

4.Jiangsu Jiaan Food Co Ltd, Nantong, Peoples R China

关键词： fresh corn bract; physio-chemical properties; soluble dietary fiber; structural characteristics; ultrasound-assisted enzymatic extraction

期刊名称：QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS （ 影响因子：1.672； 五年影响因子：1.4 ）

ISSN： 1757-8361

年卷期： 2022 年 14 卷 2 期

页码：

收录情况： SCI

摘要： The soluble dietary fiber from fresh corn bract (FCB-SDF) was extracted by ultrasonic-assisted cellulase method. The process parameters of FCB-SDF were optimized by Box???Behnken design (BBD), and the physio-chemical properties and structure of FCB-SDF obtained were investigated. The results showed that the optimal extraction conditions for FCB-SDF were enzyme concentration 1.58%, ultrasonic power 300 W, and extraction time 90 min. Under the above conditions, the FCB-SDF yield reached 21.21%. Compared with ultrasonic treatment group (U-SDF) and enzymatic treatment group (E-SDF), ultrasound-assisted enzymatic treatment group (UE-SDF) had higher WHC and OHC, but lower WSC. Its particle size was smaller, and a more microscopic pore structure was formed. UE-SDF had a low molecular weight of 204.41 KDa, and its monosaccharide composition had the highest arabinose content, followed by glucose. The SDFs obtained might be mainly composed of pectin and hemicellu-lose, E-SDF and UE-SDF contained more hemicellulose, and U-SDF contained more pectin.

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