Fermentation of grapefruit peel by an efficient cellulose-degrading strain, (Penicillium YZ-1): Modification, structure and functional properties of soluble dietary fiber. (15th September 2023)

• Record Type: Journal Article
• Authors: Ma, Wenjie; Liang, Yuting; Lin, Huasi; Chen, Yi; Xie, Jianhua; Ai, Fengling; Yan, Ziwen; Hu, Xiaobo; Yu, Qiang
• Is Part Of: Food chemistry. Volume 420(2023)
• Publication Date: 2023-09-15
• Subjects: Soluble dietary fiber -- Cellulose degrading strain -- Fermentation -- Hypolipidemic -- Structural characterization -- Functional activity; GP Grapefruit peel -- CK Control group -- HG High-pressure cooking group -- FG Strain fermentation group -- DF Dietary fiber -- SDF Soluble dietary fiber -- IDF Insoluble dietary fiber -- TDF Total dietary fiber -- CK-SDF The soluble dietary fiber from the control group -- HG-SDF The soluble dietary fiber from the high-pressure cooking group -- FG-SDF The soluble dietary fiber from strain fermentation group -- PDA Potato dextrose agar (Medium) -- PDB Potato dextrose broth (Medium) -- WHC Water holding capacity -- OHC Oil holding capacity -- WS Water solubility -- SC Swelling capacity -- BBC Mixed bile acid adsorption capacity -- DNS Dinitro salicylic acid colorimetric assay -- CMC Carboxymethyl cellulase activity -- CAC Cholesterol adsorption capacity -- BSAC Bile salt adsorption capacity -- LI Lipase inhibition -- BABK Bile acid binding kinetics model; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2023.136123
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: In this study, an efficient cellulose-degrading strain was screened. The molecular structure of soluble dietary fiber was altered by fermentation. The competence of FG-SDF in functional activities were significantly enhanced compared to the HG-SDF and CK-SDF. The changes in the functional activity of the raw materials were related to the enzymes produced by the strain. Abstract: In the study, a highly efficient cellulose-degrading strain was screened, which was identified as a fungus in the genus Penicillium sp., named YZ-1. The content of soluble dietary fiber was greatly increased by the treatment of this strain. In addition, the effects of soluble dietary fiber from high-pressure cooking group (HG-SDF), strain fermentation group (FG-SDF) and control group (CK-SDF) on the physicochemical structure, and in vitro hypolipidemic activity were investigated. The results showed that the physicochemical structure of the raw materials was improved after fermentation, and FG-SDF exhibited the loosest structure, the highest viscosity and thermal stability. Furthermore, compared to CK-SDF and HG-SDF, FG-SDF showed the most significant improvement in functional properties, including cholesterol adsorption capacity (CAC), inhibition of pancreatic lipase activity (LI) and mixed bile acid adsorption capacity (BBC). Overall, these findings will provide new insights into dietary fiber modification and improve the comprehensive use value of grapefruit by-products.