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Dockman R, Ottesen E. Synthetic diets containing a single polysaccharide disrupt gut microbial community structure and microbial interaction networks in the American cockroach. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.15.594388. [PMID: 38798626 PMCID: PMC11118275 DOI: 10.1101/2024.05.15.594388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Achieving and maintaining a healthy gut microbiome has numerous benefits for the host. Host diet plays a key role in shaping the gut microbial community, and understanding how diet composition influences gut microbiome structure and stability is key to developing effective interventions to treat gut microbiome dysbiosis. We use the American cockroach (Periplaneta americana) as a model system to dissect the response of gut microbes to host diet modification. Here, we designed synthetic diets from lab-grade, purified ingredients to identify how the cockroach gut community responds to different carbohydrate components (chitin, methylcellulose, microcrystalline cellulose, pectin, starch, xylan) in otherwise balanced diets. Using 16S rRNA gene sequencing, we show that synthetic diets produce replicable shifts in the cockroach gut community diversity and phylogenetic composition, with xylan-fed insects displaying the largest alterations. Comparison with cockroaches fed whole-food diets reveal that, rather than introducing new microbes, synthetic diets alter microbiome composition by inducing blooms among taxa present basally within the cockroach gut community. Synthetic diets are also associated with less-robust, more fragmentary microbial co-occurrence networks compared to cockroaches fed whole-food diets. Our results highlight the utility of lab-grade artificial diets in microbiome research and shed light on how purified polysaccharides may exert more influence over a stable gut community to generate noticeable change than whole food-derived fibers.
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Affiliation(s)
- Rachel Dockman
- Department of Microbiology, University of Georgia, Athens, Georgia, USA
| | - Elizabeth Ottesen
- Department of Microbiology, University of Georgia, Athens, Georgia, USA
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Jiang C, Zeng X, Wei X, Liu X, Wang J, Zheng X. Improvement of the functional properties of insoluble dietary fiber from corn bran by ultrasonic-microwave synergistic modification. ULTRASONICS SONOCHEMISTRY 2024; 104:106817. [PMID: 38394824 PMCID: PMC10906511 DOI: 10.1016/j.ultsonch.2024.106817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/06/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
A comprehensive investigation aimed to access the impacts of ultrasonic, microwave, and ultrasonic-microwave synergistic modification on the physicochemical properties, microstructure, and functional properties of corn bran insoluble dietary fiber (CBIDF). Our findings revealed that CBIDF presented a porous structure with loose folds, and the particle size and relative crystallinity were slightly decreased after modification. The CBIDF, which was modified by ultrasound-microwave synergistic treatment, exhibited remarkable benefits in terms of its adsorption capacity, and cholate adsorption capacity. Furthermore, the modification improved the in vitro hypoglycemic activity of the CBIDF by enhancing glucose absorption, retarding the starch hydrolysis, and facilitating the diffusion of glucose solution. The findings from the in vitro probiotic activity indicate that ultrasound-microwave synergistic modification also enhances the growth-promoting ability and adsorbability of Lactobacillus acidophilus and Bifidobacterium longum. Additionally, the level of soluble dietary fiber was found to be positively correlated with CBIDF adsorbability, while the crystallinity of CBIDF showed a negative correlation with α-glucosidase and α-amylase inhibition activity, as well as water-holding capacity, and oil-holding capacity.
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Affiliation(s)
- Caixia Jiang
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing 163319, China; College of Food, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Xiangrui Zeng
- College of Food, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Xuyao Wei
- College of Food, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Xiaolan Liu
- Heilongjiang Key Laboratory of Corn Deep Processing Theory and Technology, College of Food and Biological Engineering, Qiqihar University, Qiqihar 161006, China.
| | - Juntong Wang
- College of Food, Heilongjiang Bayi Agricultural University, Daqing 163319, China; Engineering Research Center of Processing and Utilization of Grain By-products and Utilization of Ministry of Education, Daqing 163319, China
| | - Xiqun Zheng
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing 163319, China; College of Food, Heilongjiang Bayi Agricultural University, Daqing 163319, China; Engineering Research Center of Processing and Utilization of Grain By-products and Utilization of Ministry of Education, Daqing 163319, China.
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Son YS, Kwon M, Son N, Kim SK, Son MY. Multilayer Coating with Red Ginseng Dietary Fiber Improves Intestinal Adhesion and Proliferation of Probiotics in Human Intestinal Epithelial Models. J Microbiol Biotechnol 2023; 33:1309-1316. [PMID: 37528560 PMCID: PMC10619547 DOI: 10.4014/jmb.2305.05013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023]
Abstract
To exert their beneficial effects, it is essential for the commensal bacteria of probiotic supplements to be sufficiently protected as they pass through the low pH environment of the stomach, and effectively colonize the intestinal epithelium downstream. Here, we investigated the effect of a multilayer coating containing red ginseng dietary fiber, on the acid tolerance, and the adhesion and proliferation capacities of three Lactobacillus strains (Limosilactobacillus reuteri KGC1901, Lacticaseibacillus casei KGC1201, Limosilactobacillus fermentum KGC1601) isolated from Panax ginseng, using HT-29 cells, mucin-coated plates, and human pluripotent stem cell-derived intestinal epithelial cells as in vitro models of human gut physiology. We observed that the multilayer-coated strains displayed improved survival rates after passage through gastric juice, as well as high adhesion and proliferation capacities within the various gut epithelial systems tested, compared to their uncoated counterparts. Our findings demonstrated that the multilayer coat effectively protected commensal microbiota and led to improved adhesion and colonization of intestinal epithelial cells, and consequently to higher probiotic efficacy.
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Affiliation(s)
- Ye Seul Son
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Mijin Kwon
- Laboratory of Efficacy Research, Korea ginseng Corporation, Daejeon 34128, Republic of Korea
| | - Naeun Son
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Sang-Kyu Kim
- Laboratory of Efficacy Research, Korea ginseng Corporation, Daejeon 34128, Republic of Korea
| | - Mi-Young Son
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
- Department of Biological Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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Tian X, Wang G, Jin K, Ding Y, Cheng D. Rice hull insoluble dietary fiber alleviated experimental colitis induced by low dose of dextran sulfate sodium in cadmium-exposed mice. Food Funct 2022; 13:7215-7225. [PMID: 35713263 DOI: 10.1039/d2fo00891b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cadmium (Cd), an important toxic environmental pollutant, can invade the gastrointestinal tract and induce the occurrence of gastrointestinal diseases. This study aimed to investigate the protective effect of rice hull insoluble dietary fiber (RHF) on Cd-promoted colitis induced by low dose of dextran sulfate sodium. Administration of RHF attenuated inflammation by limiting Cd accumulation and regulating intestinal immune homeostasis in colitis mice with Cd exposure. RHF could maintain the structure of the gut barrier by increasing mucin secretion and intestinal tight connectivity in mice. Subsequently, RHF repressed the colonic inflammation mediated by the TLR4/MyD88/NF-κB pathway, and inhibited the transcription regulation of inflammatory cytokines. Furthermore, RHF showed an enhancement of a variety of probiotics, such as Eubacterium and Faecalibaculum. RHF also inhibited the growth of pathogenic bacteria, including Erysipelatoclostridium, Helicobacter and Bacteroides. The growth of beneficial bacteria was also accompanied by reversing the decline in short-chain fatty acids, supporting the initial potentiality of RHF as a prebiotic in cases of damage by Cd exposure in colitis mice. Importantly, RHF also remained resistant to Cd toxicity in colitis mice when the gut microbiota was depleted by antibiotics. We suggest that RHF could be used as a novel dietary supplement strategy against Cd-exacerbated colitis.
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Affiliation(s)
- Xuena Tian
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, 300457, PR China.
| | - Guangliang Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, 300457, PR China.
| | - Kenan Jin
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, 300457, PR China.
| | - Yixin Ding
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, 300457, PR China.
| | - Dai Cheng
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, 300457, PR China.
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Lau T, Clayton T, Harbourne N, Rodriguez-Garcia J, Oruna-Concha MJ. Sweet corn cob as a functional ingredient in bakery products. Food Chem X 2022; 13:100180. [PMID: 34950866 PMCID: PMC8671855 DOI: 10.1016/j.fochx.2021.100180] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 10/19/2021] [Accepted: 12/03/2021] [Indexed: 11/27/2022] Open
Abstract
Incorporation of sweet corn cob flour (SCCF) in gluten free rice muffin was examined. SCCF contained a higher amount of ferulic acid and dietary fiber than rice flour. Muffin incorporated with 10% and 20% of SCCF showed an improvement in texture. Baking increases the free ferulic acid in muffin incorporated with SCCF. Muffin with SCCF showed higher mean overall liking scores in consumers liking test.
Gluten free (GF) products are often inferior in quality attributes, nutritional content and consumer acceptability. The use of GF by-products is a novel strategy to improve the structure and nutritional profile of these products. Sweet corn cob (SCC) is a by-product of sweet corn processing containing a considerable amount of fibre and ferulic acid. The effect of baking on ferulic acid content, colour, texture and physical characteristics on muffins incorporated with SCC flour (SCCF) as a value-added food ingredient was investigated using a GF model system. The freeze-dried SCCF, containing ferulic acid (6.02 mg g−1) was used to replace the rice flour at varying levels of 10, 20, and 30%. In general, SCCF increased dietary fibre and free ferulic acid content of muffins. Inclusion of 20% SCCF showed an increase in terms of the height of the muffin and number of air cells in the crumb, along with a decrease in the hardness of muffins. Muffins with SCCF showed higher mean overall liking scores than rice flour muffin.
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Affiliation(s)
- T Lau
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DZ, UK
| | - T Clayton
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DZ, UK
| | - N Harbourne
- UCD Institute of Food and Health, School of Agricultural and Food Science, University College Dublin, Belfield, Dublin, Ireland
| | - J Rodriguez-Garcia
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DZ, UK
| | - M J Oruna-Concha
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DZ, UK
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Li L, Zhao Y, Li J, Ban L, Yang L, Wang S, Zhu L, Song H, Liu H. The adhesion of the gut microbiota to insoluble dietary fiber from soy hulls promoted the proliferation of probiotics in vitro. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112560] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Taniguchi M, Nambu M, Katakura Y, Yamasaki-Yashiki S. Adhesion mechanisms of Bifidobacterium animalis subsp. lactis JCM 10602 to dietary fiber. BIOSCIENCE OF MICROBIOTA FOOD AND HEALTH 2021; 40:59-64. [PMID: 33520570 PMCID: PMC7817516 DOI: 10.12938/bmfh.2020-003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022]
Abstract
Adherence of probiotics to dietary fibers present in the intestinal tract may affect
adhesion to intestinal epithelial cells. The properties of the adhesion of bifidobacteria
to mucin or epithelial cells have been well studied; however, adhesion of bifidobacteria
to dietary fiber has not been investigated. The adhesion ratio of six
Bifidobacterium strains to cellulose and chitin was examined; among the
strains, Bifidobacterium animalis subsp. lactis JCM
10602 showed high adherence to both cellulose and chitin, and two strains showed high
adherence to only chitin. The ratios of adhesion of B. animalis to
cellulose and chitin were positively and negatively correlated with ionic strength,
respectively. These data suggest that hydrophobic and electrostatic interactions are
involved in the adhesion to cellulose and chitin, respectively. The adhesion ratios of the
cells in the late logarithmic phase to cellulose and chitin decreased by approximately 40%
and 70% of the cells in the early logarithmic phase, respectively. Furthermore, the
adhesion ratio to cellulose decreased with increasing bile concentration regardless of the
culture phase of the cells. On the other hand, the adhesion ratio to chitin of cells in
the early logarithmic phase decreased with increasing bile concentration; however, that of
cells in the late logarithmic phase increased slightly, suggesting that adhesins differ
depending on the culture phase. Our results indicated the importance of considering
adhesion to both dietary fibers and the intestinal mucosa when using bifidobacteria as
probiotics.
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Affiliation(s)
- Maria Taniguchi
- Chemistry, Materials and Bioengineering Major, Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Minori Nambu
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Yoshio Katakura
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Shino Yamasaki-Yashiki
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
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Brennan MA, Derbyshire E, Tiwari BK, Brennan CS. Integration of β-glucan fibre rich fractions from barley and mushrooms to form healthy extruded snacks. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2013; 68:78-82. [PMID: 23232921 DOI: 10.1007/s11130-012-0330-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
β-glucan is a commonly researched plant cell wall component that when incorporated into food products has been associated with cholesterol and glycaemic response reductions. This study focusses on β-glucan rich fractions from barley and mushroom used in the production of extruded ready to eat snacks. Inclusion of barley β-glucan rich fractions and mushroom β-glucan fractions at 10 % levels increased the total dietary fibre content of extrudates compared to the control (P < 0.05). Product expansion increased with the introduction of both barley and mushroom fraction (P < 0.05) which in turn resulted in a reduction in product hardness (P < 0.05). In vitro digestion protocol illustrated that inclusion of barley and mushroom β-glucan rich fractions manipulated the starch digestibility profile and hence rate of glucose release during digestion compared to the control sample. This in turn resulted in a significant (P < 0.05) reduction in potential glycaemic response of the samples of between 20 and 25 % for barley β-glucan rich fractions and between 17 and 25 % for mushroom β-glucan rich fractions. We conclude that the inclusion of these fractions could be utilised by the food industry to manipulate the glycaemic response of extruded snack products.
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Gao Y, Shen J, Yin J, Li C, Fu C, Cho S. A subchronic dietary toxicity study of rice hull fiber in rats. Food Chem Toxicol 2013; 51:137-42. [DOI: 10.1016/j.fct.2012.09.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 09/03/2012] [Accepted: 09/21/2012] [Indexed: 10/27/2022]
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