Effect of physical treatments on the functional and structural features of soluble dietary fiber from soybean dregs

IF 3.5 2区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Journal of the Science of Food and Agriculture Pub Date : 2023-10-28 DOI:10.1002/jsfa.13083

Heng Wang, Mengyu Wang, Jie Zeng, Haiyan Gao, Keke Zhang

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Abstract

BACKGROUND

In this research, the effects caused by ultrafine grinding (U), high-temperature cooking (HTC), microwave (M) and combined treatment (U-HTC, U-M) were evaluated on the functional properties and structural characteristics of soluble dietary fiber (SDF) obtained from soybean dregs.

RESULTS

Physical treatments could increase the extraction yield of SDF and improve the functional properties of SDF. The highest extraction yield (277.15 ± 5.87 g kg⁻¹ based on the weight of soybean dregs) and purity (863.37 ± 5.15 g kg⁻¹ based on the extract weight) of SDF was found in the sample by U-M treatment. U-HTC and U-M combined treatments significantly improved the water solubility and oil holding capacity of SDF. U-M treatment significantly increased the ability of SDF to adsorb cholesterol and perform cationic exchange; compared to the control, these abilities were increased by 138.46% and 10.38%, respectively. At pH 2.0, the nitrite ion adsorption capacity (NIAC) of SDF obtained by U-M combined treatment was 184.55 μg g⁻¹, which was significantly higher by 32.10% compared with that of the control. The results obtained by X-ray diffraction and scanning electron microscopy showed that the structure of SDF generated from soybean dregs became coarser and more porous, and the crystallinity decreased after physical treatments.

CONCLUSION

Abstract Image

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物理处理对豆粕可溶性膳食纤维功能和结构特征的影响。

背景：本研究评价了超细粉碎（U）、高温蒸煮（HTC）、微波（M）和联合处理（U-HTC，U-M）对豆粕可溶性膳食纤维（SDF）功能性能和结构特征的影响。结果：物理处理能提高SDF的提取率，改善SDF的功能性质。U-M处理的样品中SDF的提取率最高（按豆粕重量计为277.15±5.87g kg-1），纯度最高（按提取重量计为863.37±5.15g kg-1）。U-HTC和U-M联合处理显著提高了SDF的水溶性和含油量。U-M处理显著提高SDF吸附胆固醇和进行阳离子交换的能力；与对照组相比，这些能力分别提高了138.46%和10.38%。在pH 2.0时，U-M联合处理SDF的亚硝酸根离子吸附量（NIAC）为184.55μg/g，与对照相比显著提高了32.10%。X射线衍射和扫描电子显微镜结果表明，经物理处理后，豆渣生成的SDF结构变得更粗糙、更多孔，结晶度下降。结论：物理联合处理是提高豆渣SDF提取率和功能性质的有效方法。这篇文章受版权保护。保留所有权利。

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来源期刊

Journal of the Science of Food and Agriculture 工程技术-农业综合

CiteScore

8.10

自引率

4.90%

发文量

634

审稿时长

3.1 months

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