المؤلفون: Qin, Xiaoting, Dong, Xuewen, Tang, Jie, Chen, Yi, Xie, Jianhua, Cheng, Yanan, Zheng, Bing, Hu, Xiaobo, Yu, Qiang

المصدر: Food Bioscience; Dec2023, Vol. 56, pN.PAG-N.PAG, 1p

مصطلحات موضوعية: DIETARY fiber, ADSORPTION capacity, GRAPEFRUIT, SHORT-chain fatty acids, CHEMICAL bonds, FRUCTOOLIGOSACCHARIDES, PECTINS

مستخلص: Ultrafine grinding treatment was used to treat grapefruit peel from Shatianyou, Majiayou, Dabumiyou and Jinggangmiyou, subsequently structural properties and adsorption capacities of extracted soluble dietary fibers (SDFs) were comparatively analyzed, moreover SDF from untreated Dabumiyou (D-SDF) and SDF from Dabumiyou treated with ultrafine grinding (UD-SDF) were selected for in vitro prebiotic activity determination. The structural analysis exhibited that all SDFs manifested spectral characteristics of typical polysaccharides and showed a typical cellulose I-type structure, ultrafine grinding treatment broke chemical bonds between molecules, leading to a decrease in crystallinity, further reduced thermal stability of SDFs. The pectin content of SDFs were enhanced after modification, which may influence functional properties of SDFs. Moreover, SDFs from Dabumiyou showed better adsorption capacities for water molecule, oil molecule and cholesterol molecule. Compared to D-SDF, UD-SDF could effectively promote bacteria proliferation and stimulate probiotic strains to produce more short-chain fatty acids. This study was beneficial to better understanding physicochemical properties of SDFs extracted from different grapefruit peel by ultrafine grinding treatment and encouraged the use of grapefruit peel SDF in products with prebiotic properties. • Comparative analysis of SDFs gained from several grapefruit peel were mentioned. • Structural properties of SDFs were changed after ultrafine grinding treatment. • Adsorption capacities of U-SDFs were raised, UD-SDF showed better binding ability. • UD-SDF promoted bacteria proliferation and stimulated the production of SCFAs. [ABSTRACT FROM AUTHOR]

: Copyright of Food Bioscience is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Tang, Jie, Yang, Chaoran, Qin, Xiaoting, Si, Jingyu, Dong, Xuewen, Hu, Xiaobo, Yu, Qiang

المصدر: Food Bioscience; Oct2023, Vol. 55, pN.PAG-N.PAG, 1p

مصطلحات موضوعية: DIETARY fiber, MOLECULAR structure, PENICILLIUM, CITRUS, SCANNING electron microscopes, CELLULOSE

مستخلص: Citrus aurantium L. (CAL) was a potential low-cost source of soluble dietary fiber (SDF). To make full use of this resource, a considerable efficiency cellulose degrading strain (Penicillium griseofulvum) was screened from soil humus and used in the modification of CAL-SDF. After fermentation by Penicillium griseofulvum , the structure characteristics and adsorption properties of CAL-SDF were improved. Under the optimum fermentation conditions, the yield of SDF enlarged from 5.47% to 20.0%. Scanning electron microscope (SEM) and Fourier infrared spectroscopy (FTIR) analysis showed that the microstructure became loose and porous after fermentation, unfermented SDF (U-SDF) and fermented SDF (F-SDF) had characteristic intake peaks of polysaccharide. The results of X-ray diffraction (XRD) and thermogravimetric analysis (TGA) showed that the crystallization degree (from 16.50% to 23.15%) of SDF was improved by fermentation, which increased the thermal stability of SDF. The monosaccharide composition and average molecular weight (Mw) results showed that fermentation altered the monosaccharide percentage of SDF as well as significantly reduced the molecular weight (from 576,914 to 112,977 Da). Together, these alterations reduced the water holding capacity (from 11.31 to 1.31 g/g) and oil holding capacity (from 14.24 to 12.86 g/g) of SDF, but significant (P < 0.05) increased water solubility (from 89.35% to 92.09%), the glucose dialysis retardation index (GDRI), cholesterol adsorption capacity (CAC) and nitrite adsorption capacity (NIAC). In summary, Penicillium griseofulvum could be used as a potential strain for the modification of the CAL-SDF. Moreover, F-SDF may be used as a functional food component, which will increase CAL's value proposition. [Display omitted] • Strains were screened for efficient degradation of dietary fiber. • Factors promoting enzyme production by the strain were optimized. • The molecular structure of soluble dietary fiber were altered by fermentation. • The competence of F-SDF in GDRI, CAC, NIAC were significantly enhanced compared to the U-SDF. [ABSTRACT FROM AUTHOR]

: Copyright of Food Bioscience is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Si, Jingyu¹ (AUTHOR), Yang, Chaoran¹ (AUTHOR), Ma, Wenjie¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Qin, Xiaoting¹ (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: International Journal of Biological Macromolecules. Nov2022, Vol. 220, p337-347. 11p.

مصطلحات موضوعية: *DIETARY fiber, *ADSORPTION capacity, *MOLECULAR size, *CROP residues, *INFRARED absorption, *GUAR gum, *CELLULOSE

مستخلص: In our study, two high efficiency cellulose degrading strains were screened, isolated and identified as Cochliobolus kusanoi and Aspergillus puulaauensis by 18S rDNA gene sequencing. In addition, the composite microbial system was constructed to develop the synergistic effect among different strains. Under the optimum conditions, the yield of soluble dietary fiber from tea residues by mixed fermentation method (MF-SDF) dramatically increased compared to single strain fermentation. The structural analysis demonstrated that all samples possessed the representative infrared absorption peaks of polysaccharides, whereas MF-SDF revealed more loose structure, lower crystallinity and smaller molecular size. For the adsorption capacities indexes, MF-SDF also owned the highest adsorbing capacity for the water molecule, oil molecule, cholesterol molecule and nitrite ion. Overall, our data showed that mixed fermentation method could be better choices to improve the functional properties of dietary fiber, and screening of cellulose degrading strains could provide new thinkings for the study of dietary fiber modification and realize high-quality utilization of crop residues. • High efficiency cellulose degrading strains were screened, isolated and identified. • The composite microbial system was successfully constructed. • The fermentation effects of different strains were compared and analyzed. • The structural properties of MF-SDF were changed. • The MF-SDF owned the highest WHC, OHC, CAC and NIAC. [ABSTRACT FROM AUTHOR]

المؤلفون: Zheng, Bing¹ (AUTHOR), Ao, Tianxiang¹ (AUTHOR), Zhao, Xiaole¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Gao, Xingcai¹ (AUTHOR), Liu, Li² (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Research International. Aug2024, Vol. 189, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *DIETARY fiber, *MULTIOMICS, *SHORT-chain fatty acids, *BARLEY, *UPLANDS, *MEMBRANE lipids

مستخلص: [Display omitted] • Total, insoluble, and soluble dietary fiber were extracted from high barley. • All three dietary fibers (HDF, HIDF, HSDF) significantly improved obesity in mice. • Intestinal microbiota exhibited distinct responses to HDF, HIDF, and HSDF. • PPAR signaling was a key pathway for the anti-obesity effects. • The potential targets of HDF, HIDF, and HSDF were Abcc3, Dapk1, and Pck1. The impact of different forms of dietary fiber (total, insoluble or soluble) derived from the same source on health remains incompletely understood. In this study, the effects of total, insoluble, and soluble dietary fiber extracted from highland barley (HDF, HIDF, and HSDF) on combating obesity were evaluated and compared. A high-fat diet (HFD) was used to induce obesity in a murine model, followed by gavage administration of HDF, HIDF, or HSDF, and a comprehensive multi-omics approach was utilized to assess and compare the effects of these dietary fibers on obesity-related parameters. The results showed that all three dietary fibers significantly reduced body weight, modified blood lipid profiles, and ameliorated tissue damage in HFD-fed mice. Additionally, 16S rRNA sequencing analysis of mice feces showed that three types of dietary fiber exerted varying degrees of impact on the composition and abundance of gut microbiota while simultaneously promoting the biosynthesis of short-chain fatty acids. Specifically, HDF supplementation remarkably enhanced the abundance of Coprococcus , while HIDF and HSDF supplementation elevated the levels of Akkermansia and Allobaculum , respectively. Transcriptomic and proteomic results suggested the PPAR signaling pathway as a central regulatory mechanism influenced by these fibers. HDF and HIDF were particularly effective in modulating biological processes related to triglyceride and fatty acid metabolism, identifying Abcc3 and Dapk1 as potential targets. Conversely, HSDF primarily affected processes related to membrane lipids, ceramides, and phospholipids metabolism, with Pck1 identified as a potential target. Collectively, HDF, HIDF, and HSDF demonstrated distinct mechanisms in exerting exceptional anti-obesity properties. These insights may inform the development of personalized dietary interventions for obesity. [ABSTRACT FROM AUTHOR]

المؤلفون: Sun, Nan¹ (AUTHOR), Xie, Jiayan¹ (AUTHOR), Zheng, Bing¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Chemistry. Mar2024, Vol. 436, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *MUNG bean, *DIETARY fiber, *MOLECULAR docking, *POLYPHENOLS, *AMYLASES, *PLANT polyphenols, *DIFFERENTIAL scanning calorimetry, *AMYLOLYSIS

مستخلص: [Display omitted] • Purified bound polyphenols extracted from mung bean coat dietary fiber (pMBDF-BP). • The pMBDF-BP produced mixed-type inhibition against pancreatic α-amylase (PPA). • The pMBDF-BP quenched the fluorescence of PPA through a static quenching mechanism. • The binding of pMBDF-BP shifted the structure of PPA to a more stable conformation. • Vitexin (the main flavonoid of pMBDF-BP) showed the highest affinity for PPA. The inhibitory mechanisms of purified bound polyphenols extracted from mung bean coat dietary fiber (pMBDF-BP) on porcine pancreatic α -amylase (PPA) were investigated through inhibition kinetics, fluorescence spectroscopy, circular dichroism, differential scanning calorimetry and molecular docking. It was shown that pMBDF-BP exerted significant reversible inhibition on PPA in a mixed-type inhibition manner (IC 50 = 18.57 ± 0.30 μg/mL), and the combination of the three major components exhibited a synergistic inhibitory effect on PPA. Further, pMBDF-BP bound to the active site or form a polyphenol-enzyme complex at the inactive site through hydrogen bonding and hydrophobic forces, via enhancing the hydrophobicity of the microenvironment surrounding tryptophan and tyrosine residues and promoting the secondary structure of PPA towards a more stable conformation, eventually reducing the enzyme activity. This study provided theoretical evidences for the utilization of bound polyphenols extracted from mung bean coat dietary fiber as a functional component in natural inhibitors of α -amylase. [ABSTRACT FROM AUTHOR]

المؤلفون: Si, Jingyu¹ (AUTHOR), Xie, Jiayan¹ (AUTHOR), Zheng, Bing¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Yang, Chaoran¹ (AUTHOR), Sun, Nan¹ (AUTHOR), Wang, Yuting¹ (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Research International. Nov2023:Part 1, Vol. 173, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *SOLID-state fermentation, *DIETARY fiber, *POLYPHENOLS, *FOURIER transform infrared spectroscopy, *CELLULOSE, *AGRICULTURAL wastes, *AMYLASES

مستخلص: [Display omitted] • Mixed SSF via CZ-6 and CZ-7 effectively facilitated the BP release. • The biotransformation pathways of BP were partially speculated. • The Cellulase, β-glucosidase and Filter paper lyase activities were correlated with the BP content. • The SEM indicated the fiber structure was damaged by mixed SSF. • The BP released by mixed SSF owned better inhibition ability of carbohydrate hydrolase. The purpose of this work was to investigate the release characteristic of bound polyphenols (BP) from tea residues insoluble dietary fiber (IDF) by mixed solid-state fermentation (SSF) with cellulose degrading strains CZ-6 and CZ-7. The results implied that cellulase, β-glucosidase and filter paper lyase activities were strongly correlated with the BP content. The scanning electron microscop and fourier transform infrared spectroscopy manifested that the cellulose network of the IDF was decomposed and dissolve, forming more loose fibrous structure. Additionally, 28 polyphenols components were detected and their biotransformation pathways were preliminary speculated. Moreover, the BP obtained by mixed SSF produced prominent inhibitory activities against α-glucosidase and α-amylase, as well as exhibited significant scavenging effects on DPPH•, ABTS+• free radicals and ferric reducing antioxidant power. These findings could further promote the utilization of BP from agricultural by-products in a more natural and economical method, CZ-6 and CZ-7 strains provide a new approach to expound the release and conversion of BP. [ABSTRACT FROM AUTHOR]

المؤلفون: Ma, Wenjie¹ (AUTHOR), Liang, Yuting² (AUTHOR), Lin, Huasi¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Ai, Fengling² (AUTHOR), Yan, Ziwen² (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Chemistry. Sep2023, Vol. 420, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *DIETARY fiber, *FERMENTATION, *GRAPEFRUIT, *PENICILLIUM, *ADSORPTION capacity, *MOLECULAR structure, *GUAR gum, *LIPASES

مستخلص: [Display omitted] • 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. 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. [ABSTRACT FROM AUTHOR]

المؤلفون: Si, Jingyu¹ (AUTHOR), Yang, Chaoran¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Tian, Shenglan¹ (AUTHOR), Cheng, Yanan¹ (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Chemistry. May2023, Vol. 407, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *ASPERGILLUS niger, *DIETARY fiber, *TRICHODERMA reesei, *CELLULASE, *SODIUM cholate, *THERMAL stability, *ADSORPTION capacity

مستخلص: • The five biological methods were used to prepare soluble dietary fiber (SDF). • The highest SDF yield was obtained by Aspergillus niger -enzyme hydrolysis. • The SDF with porous structure was found by Aspergillus niger treatment. • Aspergillus niger -enzyme hydrolysis improved hypoglycemic ability of SDF. • The SDF showed highest nitrite binding capacity by Aspergillus niger treatment. The effects of enzyme hydrolysis treatment, Aspergillus niger fermentation treatment, Trichoderma reesei fermentation treatment, Aspergillus niger -enzyme hydrolysis treatment and Trichoderma reesei -enzyme hydrolysis treatment on structural properties and adsorption capacities of soluble dietary fiber from Mesona chinensis Benth residues were evaluated and compared. The Aspergillus niger -enzyme hydrolysis treatment sample possessed more diverse structure, lower crystallinity and thermal stability than other modified samples. Meanwhile, it also observed the highest soluble dietary fiber yield (20.76 ± 0.31 %), water-holding capacity and glucose adsorption capacity (38.03 ± 0.28 mg/g). The Aspergillus niger fermentation treatment sample generated a high oil-holding capacity, nitrite ion adsorption capacity (181.84 ± 6.67 ug/g), cholesterol adsorption capacity (16.40 ± 0.37 mg/g) and sodium cholate adsorption capacity (94.80 ± 1.41 mg/g). Additionally, different monosaccharide composition was exhibited due to diverse extraction methods. Our finding revealed that these two modification methods could effectively enhance the economic value of Mesona chinensis Benth residues. [ABSTRACT FROM AUTHOR]

المؤلفون: Huang, Hairong¹ (AUTHOR), Chen, Jiajun¹ (AUTHOR), Ao, Tianxiang² (AUTHOR), Chen, Yi¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Research International. Dec2022:Part A, Vol. 162, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *DIETARY fiber, *VITAMIN B2, *PLANT polyphenols, *METABOLIC disorders, *ASPARTATE aminotransferase, *POLYPHENOLS, *HYPERGLYCEMIA, *ALANINE aminotransferase

مستخلص: [Display omitted] • Dietary fiber from tea residues (TRDF) was abundant in bound polyphenols (BP). • The dietary fiber component (TRDF-DF) was obtained by removing BP from TRDF. • TRDF was more conducive for improving diabetic liver and kidney injury than TRDF-DF. • TRDF and TRDF-DF differed obviously in regulating serum metabolism of diabetic rats. • BP contributed to the health-promoting effects for diabetic complications of TRDF. Consumption of tea residues dietary fiber (TRDF) contributed to the relief of hyperglycemia symptoms in type 2 diabetes (T2D). Given the properties of TRDF abundant in bound polyphenols, the research intended to evaluate the effect of the presence or absence of bound polyphenols in TRDF on the improvement of diabetic complications (liver and kidney injury, metabolic disorders) in T2D rats induced by high-fat diet and streptozocin injection. Our results revealed that the presence of bound polyphenols in TRDF was remarkably beneficial for the amelioration of liver and kidney damage caused by T2D, which was supported by significant differences in activities of serum glutamic oxaloacetic transaminase (AST) and glutamic-pyruvic transaminase (ALT), contents of inflammatory factors in liver and kidney, the levels of kidney oxidative stress, as well as histopathological status between TRDF and bound polyphenols removed-TRDF (TRDF-DF) groups. In addition, metabolomic analysis revealed that TRDF interventions could increase the levels of metabolites such as S-Adenosylmethionine, L-Homophenylalanine and Riboflavin, as well as differ in the regulation of the metabolic pathways including arachidonic acid metabolism and cysteine and methionine metabolism as compared to TRDF-DF without bound polyphenols. These results suggested that bound polyphenols ensured the health-promoting effects for T2D complications of TRDF. [ABSTRACT FROM AUTHOR]

المؤلفون: Sun, Nan¹ (AUTHOR), Xie, Jiayan¹ (AUTHOR), Xie, Jianhua¹ (AUTHOR), Chen, Yi¹ (AUTHOR), Hu, Xiaobo¹ (AUTHOR), Yu, Qiang¹ (AUTHOR) yuqiang8612@163.com

المصدر: Food Research International. Dec2022:Part A, Vol. 162, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *DIETARY fiber, *POLYPHENOLS, *MUNG bean, *FUNCTIONAL foods, *REACTIVE oxygen species, *CAENORHABDITIS elegans, *FREE radicals

مستخلص: [Display omitted] • Purification by macroporous resin drove significant effect on the composition and content of MBDF-BP. • NKA-9 resin reflected high selectivity and enrichment for flavonoids in MBDF-BP. • Purification significantly improved the inhibitory activity of MBDF-BP against α-glucosidase. • The purified MBDF-BP exhibited prominent antioxidant activity on DPPH•, ABTS+•, •OH and ROS. In this study, the static adsorption–desorption performance of seven macroporous resins for bound polyphenols from mung bean coat dietary fiber (MBDF-BP) was compared, and NKA-9 macroporous resin was preferably screened for subsequent separation and purification. The composition of the purified products was identified and quantified, 44 major compounds were detected, with the main phenolic acid being p -hydroxybenzoic acid, which contained up to 8881.90 μg/g DW. The purification enriched flavonoids, with high contents of catechin (1419.03 μg/g DW) and vitexin (615.88 μg/g DW). The MBDF-BP purified products (pMBDF-BP) produced significant reversible inhibitory activity against α -glucosidase in a mixed-type inhibition manner, which was superior to the reported crude extracts. The antioxidant activity assays showed that pMBDF-BP exhibited distinct scavenging effects on DPPH•, ABTS+•, •OH free radicals, as well as reactive oxygen species (ROS) in Caenorhabditis elegans (C. elegans). These results demonstrated that NKA-9 macroporous resin could effectively enrich MBDF-BP extracts and enhance its antioxidant activity, which was promising to explore new sights into the applications of bound polyphenols from mung bean coat dietary fiber in functional foods or dietary supplements, thus contributing to the scientific utilization of mung bean coat resources and increasing the added value of related products. [ABSTRACT FROM AUTHOR]