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Si H, Chen Y, Hu D, Yao S, Yang J, Wen X. A graminan type fructan from Achyranthes bidentata prevents the kidney injury in diabetic mice by regulating gut microbiota. Carbohydr Polym 2024; 339:122275. [PMID: 38823933 DOI: 10.1016/j.carbpol.2024.122275] [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: 02/10/2024] [Revised: 04/26/2024] [Accepted: 05/14/2024] [Indexed: 06/03/2024]
Abstract
Diabetic kidney disease (DKD) is the main cause of end-stage renal disease, and few therapeutic options are available. The root of Achyranthis bidentatae (AB) is commonly used for DKD treatment in Traditional Chinese medicine. However, its mechanisms are still unclear. Here, a graminan type fructan ABPW1 with molecular weight of 3998 Da was purified from AB. It was composed of β-1,2-linked Fruf, β-2,6-linked-Fruf and β-1,2,6-linked-Fruf backbone, and terminated with T-Glcp and 2-Fruf residues. ABPW1 protected against kidney injuries and intestinal barrier disruption in Streptozotocin (STZ)/High fat diet (HFD) mice. It could modulate gut microbiota composition, evidenced by a rise in the abundance of Bacteroide and decreases of Rikenella, Alistipes, Laedolimicola and Faecalibaculum. ABPW1 intervention promoted short chain fatty acids (SCFAs) production in STZ/HFD mice, especially propionate and isobutyric acid. Antibiotic treatment further demonstrated the key role of gut microbiota in the renal protective action of ABPW1. In addition, in vitro simulated digestion and fermentation together with in vivo fluorescent labeling studies demonstrated ABPW1 was indigestible in upper digestive tract but could reach the colon and be degraded into SCFAs by gut microbiota there. Overall, these data suggested ABPW1 has the potential application on DKD prevention.
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Affiliation(s)
- Huayang Si
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Yimeng Chen
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Dejun Hu
- Department of Food Nutrition and Safety, School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Sainan Yao
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Jie Yang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China.
| | - Xiaodong Wen
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China.
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2
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Tero-Vescan A, Ștefănescu R, Istrate TI, Pușcaș A. Fructose-induced hyperuricaemia - protection factor or oxidative stress promoter? Nat Prod Res 2024:1-13. [PMID: 38522076 DOI: 10.1080/14786419.2024.2327624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/28/2024] [Indexed: 03/26/2024]
Abstract
Accumulating evidence suggests that dietary fructose may play a role in the hyperuricaemia development, but the precise mechanism remains unclear. Hyperuricaemia is characterised by excessive production and deposition of urate crystals, and the metabolism of fructose has been implicated in the elevation of serum urate levels. The association between fructose intake and the risk of hyperuricaemia is explained by the metabolism of fructose in the liver, small intestine, and kidney. Many studies have confirmed the correlation between fructose consumption and an increased risk of developing hyperuricaemia, but more prospective studies to fully elucidate the role of fructose intake in the pathogenesis of hyperuricaemia are needed. It is important to note that maintaining a balanced diet, and lifestyle is crucial when considering fructose intake. Limiting the consumption of products high in added sugars and maintaining a healthy weight can contribute to reducing the risk of hyperuricaemia and associated health complications.
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Affiliation(s)
- Amelia Tero-Vescan
- Medical Chemistry and Biochemistry Department, Faculty of Medicine in English, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, Hamburg, Germany
| | - Ruxandra Ștefănescu
- Department of Pharmacognosy and Phytotherapy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, Târgu Mures, Romania
| | - Tudor-Ionuț Istrate
- Faculty of Medicine, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mures, Târgu Mures, Romania
| | - Amalia Pușcaș
- Biochemistry and Chemistry of the Environmental Factors Department, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mures, Târgu Mures, Romania
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3
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Liu W, Zhang L, Wei X, Xu Y, Fang Q, Qi S, Chen J, Wang C, Wang S, Qin L, Liu P, Wu J. Structural characterization of an inulin neoseries-type fructan from Ophiopogonis Radix and the therapeutic effect on liver fibrosis in vivo. Carbohydr Polym 2024; 327:121659. [PMID: 38171656 DOI: 10.1016/j.carbpol.2023.121659] [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: 08/27/2023] [Revised: 11/06/2023] [Accepted: 11/30/2023] [Indexed: 01/05/2024]
Abstract
Ophiopogonis Radix is a well-known Traditional Chinese Medicine and functional food that is rich in polysaccharides and has fructan as a characteristic component. In this study, an inulin neoseries-type fructan designated as OJP-W2 was obtained and characterized from Ophiopogonis Radix, and its potential therapeutic effect on liver fibrosis in vivo were investigated. Structural studies revealed that OJP-W2 had a molecular weight of 5.76 kDa and was composed of glucose and fructose with a molar ratio of 1.00:30.87. Further analysis revealed OJP-W2 has a predominantly lineal (1-2)-linked β-D-fructosyl units linked to the glucose moiety of the sucrose molecule with (2-6)-linked β-D-fructosyl side chains. Pharmacological studies revealed that OJP-W2 exerted a marked hepatoprotective effect against liver fibrosis, the mechanism of action was involved in regulating collagen deposition (α-SMA, COL1A1 and liver Hyp contents) and TGF-β/Smads signaling pathway, alleviating liver inflammation (IL-1β, IL-6, CCL5 and F4/80) and MAPK signaling pathway, and inhibiting hepatic apoptosis (Bax, Bcl-2, ATF4 and Caspase 3). These data provide evidence for expanding Ophiopogonis Radix-acquired fructan types and advancing our understanding of the specific role of inulin neoseries-type fructan in liver fibrosis therapy.
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Affiliation(s)
- Wei Liu
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China; College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Linzhang Zhang
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China; Basic Research Center of Traditional Chinese Medicine Prescription and Syndrome, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xia Wei
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China; Basic Research Center of Traditional Chinese Medicine Prescription and Syndrome, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yongbin Xu
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Rood, Shanghai 201203, China
| | - Qinqin Fang
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China; Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Rood, Shanghai 201203, China
| | - Shenglan Qi
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China; Basic Research Center of Traditional Chinese Medicine Prescription and Syndrome, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiamei Chen
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China
| | - Changhong Wang
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Rood, Shanghai 201203, China
| | - Shunchun Wang
- Institute of Chinese Materia Medica, The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Rood, Shanghai 201203, China
| | - Luping Qin
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Ping Liu
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Department of pharmacy, Institude of Liver Diseases, The NATCM Third Grade Laboratory of Traditional Chinese Medicine Preparations, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai 201203, China; Basic Research Center of Traditional Chinese Medicine Prescription and Syndrome, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Jianjun Wu
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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Alemán MN, Sánchez SS, Honoré SM. Daily Intake of Smallanthus sonchifolius (Yacon) Roots Reduces the Progression of Non-alcoholic Fatty Liver in Rats Fed a High Fructose Diet. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2022; 77:521-528. [PMID: 36048356 DOI: 10.1007/s11130-022-01009-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
High-fructose diet is associated with an increased risk of dyslipidemia, metabolic syndrome, and the development of non-alcoholic fatty liver disease (NAFLD) through chronic inflammation. The present study aimed to elucidate the potential benefit of daily consumption of Smallanthus sonchifolius (yacon) roots, rich in fructooligosaccharides (FOS), on the progression to liver fibrosis, in a rat model of NAFLD induced by a high-fructose diet. Male Wistar rats were fed a standard diet (CD, n = 6) or a standard diet plus 10% fructose solution (FD; n = 18). After 20 weeks, FD rats were randomly separated into the following groups (n = 6, each): FD; FD treated with yacon flour (340 mg FOS/body weight; FD + Y) and FD treated with fenofibrate (30 mg/kg body weight; FD + F), for 16 weeks. Daily intake of yacon flour significantly reduced body weight gain, plasma lipid levels, transaminase activities, and improved systemic insulin response in FD rats. In the liver, yacon treatment decreased fructose-induced steatosis and inflammation, and reduced total collagen deposition (64%). Also, yacon decreased TGF-β1 mRNA expression (78%), followed by decreased nuclear localization of p-Smad2/3 in liver tissue. Yacon significantly reduced the expression of α-smooth muscle actin (α-SMA), Col1α1, and Col3α1 mRNAs (85, 44, and 47%, respectively), inhibiting the activation of resident hepatic stellate cells (HSCs). These results suggested that yacon roots have the potential to ameliorate liver damage caused by long-term consumption of a high-fructose diet, being a promising nutritional strategy in NAFLD management.
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Affiliation(s)
- Mariano Nicolás Alemán
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, Chacabuco 461, T4000ILI, San Miguel de Tucumán, Argentina
- Instituto de Biología "Dr. Francisco D. Barbieri" Facultad de Bioquímica, Química y Farmacia- Universidad Nacional de Tucumán (UNT), San Miguel de Tucumán, Argentina
| | - Sara Serafina Sánchez
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, Chacabuco 461, T4000ILI, San Miguel de Tucumán, Argentina
| | - Stella Maris Honoré
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, Chacabuco 461, T4000ILI, San Miguel de Tucumán, Argentina.
- Instituto de Biología "Dr. Francisco D. Barbieri" Facultad de Bioquímica, Química y Farmacia- Universidad Nacional de Tucumán (UNT), San Miguel de Tucumán, Argentina.
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5
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Letourneau J, Holmes ZC, Dallow EP, Durand HK, Jiang S, Carrion VM, Gupta SK, Mincey AC, Muehlbauer MJ, Bain JR, David LA. Ecological memory of prior nutrient exposure in the human gut microbiome. THE ISME JOURNAL 2022; 16:2479-2490. [PMID: 35871250 PMCID: PMC9563064 DOI: 10.1038/s41396-022-01292-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 04/20/2023]
Abstract
Many ecosystems have been shown to retain a memory of past conditions, which in turn affects how they respond to future stimuli. In microbial ecosystems, community disturbance has been associated with lasting impacts on microbiome structure. However, whether microbial communities alter their response to repeated stimulus remains incompletely understood. Using the human gut microbiome as a model, we show that bacterial communities retain an "ecological memory" of past carbohydrate exposures. Memory of the prebiotic inulin was encoded within a day of supplementation among a cohort of human study participants. Using in vitro gut microbial models, we demonstrated that the strength of ecological memory scales with nutrient dose and persists for days. We found evidence that memory is seeded by transcriptional changes among primary degraders of inulin within hours of nutrient exposure, and that subsequent changes in the activity and abundance of these taxa are sufficient to enhance overall community nutrient metabolism. We also observed that ecological memory of one carbohydrate species impacts microbiome response to other carbohydrates, and that an individual's habitual exposure to dietary fiber was associated with their gut microbiome's efficiency at digesting inulin. Together, these findings suggest that the human gut microbiome's metabolic potential reflects dietary exposures over preceding days and changes within hours of exposure to a novel nutrient. The dynamics of this ecological memory also highlight the potential for intra-individual microbiome variation to affect the design and interpretation of interventions involving the gut microbiome.
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Affiliation(s)
- Jeffrey Letourneau
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Zachary C Holmes
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Eric P Dallow
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Heather K Durand
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Sharon Jiang
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Verónica M Carrion
- Duke Office of Clinical Research, Duke University School of Medicine, Durham, NC, USA
| | - Savita K Gupta
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Adam C Mincey
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, USA
| | - Michael J Muehlbauer
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, USA
| | - James R Bain
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, USA
- Department of Medicine (Endocrinology), Duke University School of Medicine, Durham, NC, USA
| | - Lawrence A David
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA.
- Program in Computational Biology and Bioinformatics, Duke University School of Medicine, Durham, NC, USA.
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6
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Zhang J, Chen H, Luo L, Zhou Z, Wang Y, Gao T, Yang L, Peng T, Wu M. Structures of fructan and galactan from Polygonatum cyrtonema and their utilization by probiotic bacteria. Carbohydr Polym 2021; 267:118219. [PMID: 34119173 DOI: 10.1016/j.carbpol.2021.118219] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/14/2021] [Accepted: 05/14/2021] [Indexed: 02/02/2023]
Abstract
Polygonatum cyrtonema is a known tonic herb in Chinese Materia Medica, extensively consumed in China, but the structure and activity of its polysaccharide components remain to be clarified. Herein, two new polysaccharides (a fructan and a galactan) were purified from the dried and the processed P. cyrtonema rhizome, respectively. Structural analysis suggested that the fructan consisted of a (2 → 6) linked β-d-Fruf residues backbone with an internal α-d-Glcp residue and two (2 → 1) linked β-d-Fruf residues branches, and that the galactan was a (1 → 4)-β-d-galactan branched with a single β-d-galactose at C-6 at about every nine residues in its main chain. The bioactive assay showed that the fructan and the galactan remarkably promoted growth of Bifidobacterium and Lactobacillus strains, indicating that they possess prebiotic activity. These findings may help expand the application of the polysaccharides from the tonic herb P. cyrtonema as functional ingredients in food products.
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Affiliation(s)
- Junyin Zhang
- College of Pharmacy, Chengdu University of TCM, Chengdu 611137, China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Hulan Chen
- College of Pharmacy, Chengdu University of TCM, Chengdu 611137, China
| | - Lan Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Zhipeng Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yingxiang Wang
- College of Pharmacy, Chengdu University of TCM, Chengdu 611137, China
| | - Tianyu Gao
- College of Pharmacy, Chengdu University of TCM, Chengdu 611137, China
| | - Lian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Teng Peng
- College of Pharmacy, Chengdu University of TCM, Chengdu 611137, China.
| | - Mingyi Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
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8
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Ni D, Xu W, Zhu Y, Pang X, Lv J, Mu W. Insight into the effects and biotechnological production of kestoses, the smallest fructooligosaccharides. Crit Rev Biotechnol 2020; 41:34-46. [PMID: 33153319 DOI: 10.1080/07388551.2020.1844622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Kestoses, the smallest fructooligosaccharides, are trisaccharides composed of a fructose molecule and a sucrose molecule linked by either β-(2,1) or β-(2,6) linkage. 1-kestose, 6-kestose and neokestose are the three types of kestoses occurring in nature. As the main kind of fructooligosaccharide, kestoses share similar physiological effects with other fructooligosaccharides, and they have recently been determined to show more notable effects in promoting the growth of probiotics including Faecalibacterium prausnitzii and Bifidobacterium than those of other fructooligosaccharides. Kestoses exist in many plants, but the relatively low content and the isolation and purification are the main barriers limiting their industrial application. The production of kestoses by enzymatic biosynthesis and microbial fermentation has the potential to facilitate its production and industrial use. In this article, the recent advances in the research of kestoses were overviewed, including those studying their functions and production. Kestose-producing enzymes were introduced in detail, and microbial production and fermentation optimization techniques for enhancing the yield of kestoses were addressed. β-Fructofuranosidase is the main one used to produce kestoses because of the extensive range of microbial sources. Therefore, the production of kestoses by microorganisms containing β-fructofuranosidase has also been reviewed. However, few molecular modification studies have attempted to change the production profile of some enzymes and improve the yield of kestoses, which is a topic that should garner more attention. Additionally, the production of kestoses using food-grade microorganisms may be beneficial to their application in the food industry.
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Affiliation(s)
- Dawei Ni
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wei Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xiaoyang Pang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiaping Lv
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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Host-microbiota interaction helps to explain the bottom-up effects of climate change on a small rodent species. ISME JOURNAL 2020; 14:1795-1808. [PMID: 32313262 PMCID: PMC7305154 DOI: 10.1038/s41396-020-0646-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 03/18/2020] [Accepted: 03/24/2020] [Indexed: 01/02/2023]
Abstract
The population cycles of small rodents have puzzled biologists for centuries. There is a growing recognition of the cascading effects of climate change on the population dynamics of rodents. However, the ultimate cause for the bottom-up effects of precipitation is poorly understood, from a microbial perspective. Here, we conducted a precipitation manipulation experiment in the field, and three feeding trials with controlled diets in the laboratory. We found precipitation supplementation facilitated the recovery of a perennial rhizomatous grass (Leymus chinensis) species, which altered the diet composition and increase the intake of fructose and fructooligosaccharides for Brandt’s vole. Lab results showed that this nutrient shift was accompanied by the modulation of gut microbiota composition and functional pathways (especially for the degradation or biosynthesis of L-histidine). Particularly, the relative abundance of Eubacterium hallii was consistently increased after feeding voles with more L. chinensis, fructose or fructooligosaccharide. These modulations ultimately increased the production of short chain fatty acids (SCFAs) and boosted the growth of vole. This study provides evidence that the precipitation pulses cascades through the plant community to affect rodent gut microbiome. Our results highlight the importance of considering host-microbiota interaction when investigating rodent population responses to climate change.
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10
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Choquechambi LA, Callisaya IR, Ramos A, Bosque H, Mújica A, Jacobsen SE, Sørensen M, Leidi EO. Assessing the Nutritional Value of Root and Tuber Crops from Bolivia and Peru. Foods 2019; 8:foods8110526. [PMID: 31652880 PMCID: PMC6915682 DOI: 10.3390/foods8110526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/16/2019] [Accepted: 10/19/2019] [Indexed: 11/16/2022] Open
Abstract
All over the world, there are species which may be considered as neglected or underutilized despite their nutritious properties. At present, such crops contribute to food security in isolated areas by providing energy and nutrients in a diversified diet. Such genetic heritage—improved by ancient cultures—is under threat of losing biodiversity as well as the traditional knowledge associated with their cultivation and usage. Among these species, the Andean root and tuber crops (ARTCs) constitute a valuable resource which should be preserved and popularized because of their food and functional properties. We studied three ARTC species (mashua, arracacha, and yacon) to provide data on their composition, essential for increasing their use globally. We compared their nutritional values with the values of more widely used crops. Important differences in nutrient composition among ARTC landraces were found. Mineral nutrients showed significant differences among species. Considerable variations in the contents of prebiotics like fructooligosaccharides or functional elements (antioxidants and glucosinolates) were found among species and intraspecific samples. Certainly, these species are important assets to complement human nutrition and to secure supply of functional elements for healthy diets.
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Affiliation(s)
- Luz A Choquechambi
- Facultad de Ciencias Agrarias, Universidad Nacional del Altiplano, Ciudad Universitaria, Puno 51, Perú.
| | - Iber Roy Callisaya
- Facultad de Agronomía, Universidad Mayor de San Andrés, La Paz, Bolivia.
| | - Alvaro Ramos
- Department of Plant Biotechnology, IRNAS-CSIC, E-41012 Seville, Spain.
| | - Hugo Bosque
- Facultad de Agronomía, Universidad Mayor de San Andrés, La Paz, Bolivia.
| | - Angel Mújica
- Facultad de Ciencias Agrarias, Universidad Nacional del Altiplano, Ciudad Universitaria, Puno 51, Perú.
| | | | - Marten Sørensen
- Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 3, 1870 Frederiksberg C, Denmark.
| | - Eduardo O Leidi
- Department of Plant Biotechnology, IRNAS-CSIC, E-41012 Seville, Spain.
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11
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Zhao H, Greiner S, Scheffzek K, Rausch T, Wang G. A 6&1-FEH Encodes an Enzyme for Fructan Degradation and Interact with Invertase Inhibitor Protein in Maize ( Zea mays L.). Int J Mol Sci 2019; 20:E3807. [PMID: 31382684 PMCID: PMC6696269 DOI: 10.3390/ijms20153807] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/14/2019] [Accepted: 07/15/2019] [Indexed: 01/30/2023] Open
Abstract
About 15% of higher plants have acquired the ability to convert sucrose into fructans. Fructan degradation is catalyzed by fructan exohydrolases (FEHs), which are structurally related to cell wall invertases (CWI). However, the biological function(s) of FEH enzymes in non-fructan species have remained largely enigmatic. In the present study, one maize CWI-related enzyme named Zm-6&1-FEH1, displaying FEH activity, was explored with respect to its substrate specificities, its expression during plant development, and its possible interaction with CWI inhibitor protein. Following heterologous expression in Pichia pastoris and in N. benthamiana leaves, recombinant Zm-6&1-FEH1 revealed substrate specificities of levan and inulin, and also displayed partially invertase activity. Expression of Zm-6&1-FEH1 as monitored by qPCR was strongly dependent on plant development and was further modulated by abiotic stress. To explore whether maize FEH can interact with invertase inhibitor protein, Zm-6&1-FEH1 and maize invertase inhibitor Zm-INVINH1 were co-expressed in N. benthamiana leaves. Bimolecular fluorescence complementation (BiFC) analysis and in vitro enzyme inhibition assays indicated productive complex formation. In summary, the results provide support to the hypothesis that in non-fructan species FEH enzymes may modulate the regulation of CWIs.
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Affiliation(s)
- Hongbo Zhao
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Steffen Greiner
- Centre for Organismal Studies Heidelberg, Department of Plant Molecular Physiology, University of Heidelberg, 69120 Heidelberg, Germany
| | - Klaus Scheffzek
- Division Biological Chemistry, Innsbruck Medical University, Biocenter, Innrain 80, A-6020 Innsbruck, Austria
| | - Thomas Rausch
- Centre for Organismal Studies Heidelberg, Department of Plant Molecular Physiology, University of Heidelberg, 69120 Heidelberg, Germany.
| | - Guoping Wang
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
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12
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Low-resolution structure, oligomerization and its role on the enzymatic activity of a sucrose-6-phosphate hydrolase from Bacillus licheniformis. Amino Acids 2019; 51:599-610. [DOI: 10.1007/s00726-018-02690-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/17/2018] [Indexed: 11/25/2022]
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13
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Leidi EO, Altamirano AM, Mercado G, Rodriguez JP, Ramos A, Alandia G, Sørensen M, Jacobsen SE. Andean roots and tubers crops as sources of functional foods. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.10.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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14
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Yan YL, Hu Y, Gänzle MG. Prebiotics, FODMAPs and dietary fiber — conflicting concepts in development of functional food products? Curr Opin Food Sci 2018. [DOI: 10.1016/j.cofs.2018.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Versluys M, Kirtel O, Toksoy Öner E, Van den Ende W. The fructan syndrome: Evolutionary aspects and common themes among plants and microbes. PLANT, CELL & ENVIRONMENT 2018; 41:16-38. [PMID: 28925070 DOI: 10.1111/pce.13070] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/30/2017] [Accepted: 09/09/2017] [Indexed: 05/13/2023]
Abstract
Fructans are multifunctional fructose-based water soluble carbohydrates found in all biological kingdoms but not in animals. Most research has focused on plant and microbial fructans and has received a growing interest because of their practical applications. Nevertheless, the origin of fructan production, the so-called "fructan syndrome," is still unknown. Why fructans only occur in a limited number of plant and microbial species remains unclear. In this review, we provide an overview of plant and microbial fructan research with a focus on fructans as an adaptation to the environment and their role in (a)biotic stress tolerance. The taxonomical and biogeographical distribution of fructans in both kingdoms is discussed and linked (where possible) to environmental factors. Overall, the fructan syndrome may be related to water scarcity and differences in physicochemical properties, for instance, water retaining characteristics, at least partially explain why different fructan types with different branching levels are found in different species. Although a close correlation between environmental stresses and fructan production is quite clear in plants, this link seems to be missing in microbes. We hypothesize that this can be at least partially explained by differential evolutionary timeframes for plants and microbes, combined with potential redundancy effects.
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Affiliation(s)
- Maxime Versluys
- Laboratory of Molecular Plant Biology, KU Leuven, Leuven, Belgium
| | - Onur Kirtel
- Industrial Biotechnology and Systems Biology Research Group, Bioengineering Department, Marmara University, Istanbul, 34722, Turkey
| | - Ebru Toksoy Öner
- Industrial Biotechnology and Systems Biology Research Group, Bioengineering Department, Marmara University, Istanbul, 34722, Turkey
| | - Wim Van den Ende
- Laboratory of Molecular Plant Biology, KU Leuven, Leuven, Belgium
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16
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17
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Ackerman DL, Craft KM, Townsend SD. Infant food applications of complex carbohydrates: Structure, synthesis, and function. Carbohydr Res 2017; 437:16-27. [PMID: 27883906 PMCID: PMC6172010 DOI: 10.1016/j.carres.2016.11.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/31/2016] [Accepted: 11/09/2016] [Indexed: 01/05/2023]
Abstract
Professional health bodies such as the World Health Organization (WHO), the American Academy of Pediatrics (AAP), and the U.S. Department of Health and Human Services (HHS) recommend breast milk as the sole source of food during the first year of life. This position recognizes human milk as being uniquely suited for infant nutrition. Nonetheless, most neonates in the West are fed alternatives by 6 months of age. Although inferior to human milk in most aspects, infant formulas are able to promote effective growth and development. However, while breast-fed infants feature a microbiota dominated by bifidobacteria, the bacterial flora of formula-fed infants is usually heterogeneous with comparatively lower levels of bifidobacteria. Thus, the objective of any infant food manufacturer is to prepare a product that results in a formula-fed infant developing a breast-fed infant-like microbiota. The goal of this focused review is to discuss the structure, synthesis, and function of carbohydrate additives that play a role in governing the composition of the infant microbiome and have other health benefits.
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Affiliation(s)
- Dorothy L Ackerman
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, United States
| | - Kelly M Craft
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, United States
| | - Steven D Townsend
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, United States; Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37232, United States.
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18
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Márquez-Aguirre AL, Camacho-Ruíz RM, Gutiérrez-Mercado YK, Padilla-Camberos E, González-Ávila M, Gálvez-Gastélum FJ, Díaz-Martínez NE, Ortuño-Sahagún D. Fructans from Agave tequilana with a Lower Degree of Polymerization Prevent Weight Gain, Hyperglycemia and Liver Steatosis in High-Fat Diet-Induced Obese Mice. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2016; 71:416-421. [PMID: 27679439 PMCID: PMC5116042 DOI: 10.1007/s11130-016-0578-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Fructans from agave have received specific attention because of their highly branched fructan content. We have previously reported that the degree of polymerization (dp) influences their biological activity. Therefore, the aim of this study was to investigate the effect of unfractionated and fractionated fructans (higher and lower dps) from Agave tequilana in high-fat diet-induced (HFD) obese mice. Fructans with a lower dp (HFD+ScF) decreased weight gain by 30 %, body fat mass by 51 %, hyperglycemia by 25 % and liver steatosis by 40 %. Interestingly, unfractionated fructans (HFD+F) decreased glucose and triglycerides (TG), whereas fractionated fructans with a higher dp (HFD+LcF) decreased TG but not glucose; in contrast, HFD+ScF decreased glucose but not TG. Our findings suggest that both higher and lower dp agave fructans have complementary effects in metabolic disorders related to obesity. These findings may contribute to the development of improved food supplements with a specific ratio combination of fructans with different dps.
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Affiliation(s)
- A. L. Márquez-Aguirre
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Guadalajara, Jalisco Mexico
| | - R. M. Camacho-Ruíz
- Unidad de Biotecnología Industrial, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Guadalajara, Jalisco Mexico
| | - Y. K. Gutiérrez-Mercado
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Guadalajara, Jalisco Mexico
| | - E. Padilla-Camberos
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Guadalajara, Jalisco Mexico
| | - M. González-Ávila
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Guadalajara, Jalisco Mexico
| | - F. J. Gálvez-Gastélum
- Laboratorio de Patología, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco Mexico
| | - N. E. Díaz-Martínez
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Guadalajara, Jalisco Mexico
| | - D. Ortuño-Sahagún
- Instituto de Investigación en Ciencias Biomédicas (IICB), CUCS, Universidad de Guadalajara, Guadalajara, Jalisco Mexico
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Caetano BFR, de Moura NA, Almeida APS, Dias MC, Sivieri K, Barbisan LF. Yacon (Smallanthus sonchifolius) as a Food Supplement: Health-Promoting Benefits of Fructooligosaccharides. Nutrients 2016; 8:nu8070436. [PMID: 27455312 PMCID: PMC4963912 DOI: 10.3390/nu8070436] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/10/2016] [Accepted: 06/16/2016] [Indexed: 01/19/2023] Open
Abstract
Yacon (Smallanthus sonchifolius), a perennial plant of the family Asteraceae native to the Andean regions of South America, is an abundant source of fructooligosaccharides (FOS). This comprehensive review of the literature addressed the role of yacon supplementation in promoting health and reducing the risk of chronic diseases. According to several preclinical and clinical trials, FOS intake favors the growth of health-promoting bacteria while reducing pathogenic bacteria populations. Moreover, the endproducts of FOS fermentation by the intestinal microbiota, short chain fatty acids (SCFA), act as substrates or signaling molecules in the regulation of the immune response, glucose homeostasis and lipid metabolism. As a result, glycemic levels, body weight and colon cancer risk can be reduced. Based on these findings, most studies reviewed concluded that due to their functional properties, yacon roots may be effectively used as a dietary supplement to prevent and treat chronic diseases.
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Affiliation(s)
- Brunno F R Caetano
- Department of Morphology, Institute of Biosciences, Sao Paulo State University, Botucatu 18618-689, Brazil.
| | - Nelci A de Moura
- Department of Morphology, Institute of Biosciences, Sao Paulo State University, Botucatu 18618-689, Brazil.
| | - Ana P S Almeida
- Departament of Food and Nutrition, Faculty of Pharmaceutical Sciences, Sao Paulo State University, Araraquara 14800-903, Brazil.
| | - Marcos C Dias
- Institute of Health Sciences, Federal University of Mato Grosso, Sinop 78550-000, Mato Grosso, Brazil.
| | - Kátia Sivieri
- Departament of Food and Nutrition, Faculty of Pharmaceutical Sciences, Sao Paulo State University, Araraquara 14800-903, Brazil.
| | - Luís F Barbisan
- Department of Morphology, Institute of Biosciences, Sao Paulo State University, Botucatu 18618-689, Brazil.
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20
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Barczynska R, Kapusniak J, Litwin M, Slizewska K, Szalecki M. Dextrins from Maize Starch as Substances Activating the Growth of Bacteroidetes and Actinobacteria Simultaneously Inhibiting the Growth of Firmicutes, Responsible for the Occurrence of Obesity. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2016; 71:190-6. [PMID: 27155867 PMCID: PMC4891389 DOI: 10.1007/s11130-016-0542-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Unarguably, diet has a significant impact on human intestinal microbiota. The role of prebiotics as substances supporting the maintenance of appropriate body weight and reducing the demand for energy via stimulation of the growth of beneficial microbiota of the gut and formation products such as short-chain fatty acids, is more and more often highlighted. The objective of this study was to evaluate whether dextrins from maize starch resistant to enzymatic digestion stimulate the growth of Bacteroidetes and Actinobacteria strains representing a majority of the population of colon microbiota in lean individuals and limit the growth of Firmicutes bacterial strains representing a majority of the population of colon microbiota in obese individuals. The study was conducted with the use of in vitro method, using isolates from faeces of children characterized by normal weight, overweight and obesity. It was demonstrated that dextrins from maize starch equally efficient stimulate the growth of the isolates derived from normal-weight, overweight and obese children, and therefore may be added to foods as a beneficial component stimulating growth of strains belonging to Actinobacteria and Bacteroidetes for both overweight, obese and normal-weight children.
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Affiliation(s)
- Renata Barczynska
- Institute of Chemistry, Environmental Protection and Biotechnology, Jan Dlugosz University in Czestochowa, Armii Krajowej 13/15, 42-200, Czestochowa, Poland.
| | - Janusz Kapusniak
- Institute of Chemistry, Environmental Protection and Biotechnology, Jan Dlugosz University in Czestochowa, Armii Krajowej 13/15, 42-200, Czestochowa, Poland
| | | | - Katarzyna Slizewska
- Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences, Technical University of Lodz, Lodz, Poland
| | - Mieczyslaw Szalecki
- The Children's Memorial Health Institute, Warsaw, Poland
- Faculty of Health Sciences, UJK, Kielce, Poland
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21
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Van den Ende W, Coopman M, Vergauwen R, Van Laere A. Presence of Inulin-Type Fructo-Oligosaccharides and Shift from Raffinose Family Oligosaccharide to Fructan Metabolism in Leaves of Boxtree (Buxus sempervirens). FRONTIERS IN PLANT SCIENCE 2016; 7:209. [PMID: 26973663 PMCID: PMC4771763 DOI: 10.3389/fpls.2016.00209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 02/06/2016] [Indexed: 05/26/2023]
Abstract
Fructans are known to occur in 15% of flowering plants and their accumulation is often associated with stress responses. Typically, particular fructan types occur within particular plant families. The family of the Buxaceae, harboring Pachysandra terminalis, an accumulator of graminan- and levan-type fructans, also harbors boxtree (Buxus sempervirens), a cold and drought tolerant species. Surprisingly, boxtree leaves do not accumulate the expected graminan- and levan-type fructans, but small inulin fructo-oligosaccharides (FOS: 1-kestotriose and nystose) and raffinose family oligosaccharides (RFOs: raffinose and stachyose) instead. The seasonal variation in concentrations of glucose, fructose, sucrose, FOS and RFOs were followed. Raffinose and stachyose peaked during the winter months, while FOS peaked at a very narrow time-interval in spring, immediately preceded by a prominent sucrose accumulation. Sucrose may function as a reserve carbohydrate in winter and early spring leaves. The switch from RFO to fructan metabolism in spring strongly suggests that fructans and RFOs fulfill distinct roles in boxtree leaves. RFOs may play a key role in the cold acclimation of winter leaves while temporal fructan biosynthesis in spring might increase sink strength to sustain the formation of new shoots.
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22
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De Sadeleer E, Vergauwen R, Struyf T, Le Roy K, Van den Ende W. 1-FFT amino acids involved in high DP inulin accumulation in Viguiera discolor. FRONTIERS IN PLANT SCIENCE 2015; 6:616. [PMID: 26322058 PMCID: PMC4531242 DOI: 10.3389/fpls.2015.00616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 07/27/2015] [Indexed: 05/26/2023]
Abstract
Fructans are important vacuolar reserve carbohydrates with drought, cold, ROS and general abiotic stress mediating properties. They occur in 15% of all flowering plants and are believed to display health benefits as a prebiotic and dietary fiber. Fructans are synthesized by specific fructosyltransferases and classified based on the linkage type between fructosyl units. Inulins, one of these fructan types with β(2-1) linkages, are elongated by fructan:fructan 1-fructosyltransferases (1-FFT) using a fructosyl unit from a donor inulin to elongate the acceptor inulin molecule. The sequence identity of the 1-FFT of Viguiera discolor (Vd) and Helianthus tuberosus (Ht) is 91% although these enzymes produce distinct fructans. The Vd 1-FFT produces high degree of polymerization (DP) inulins by preferring the elongation of long chain inulins, in contrast to the Ht 1-FFT which prefers small molecules (DP3 or 4) as acceptor. Since higher DP inulins have interesting properties for industrial, food and medical applications, we report here on the influence of two amino acids on the high DP inulin production capacity of the Vd 1-FFT. Introducing the M19F and H308T mutations in the active site of the Vd 1-FFT greatly reduces its capacity to produce high DP inulin molecules. Both amino acids can be considered important to this capacity, although the double mutation had a much higher impact than the single mutations.
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Affiliation(s)
| | | | | | | | - Wim Van den Ende
- *Correspondence: Wim Van den Ende, Laboratory of Molecular Plant Biology, Institute of Botany and Microbiology, Kasteelpark Arenberg 31, B-3001 Leuven, Belgium
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23
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Cruz-Cárdenas CI, Miranda-Ham ML, Castro-Concha LA, Ku-Cauich JR, Vergauwen R, Reijnders T, Van den Ende W, Escobedo-GraciaMedrano RM. Fructans and other water soluble carbohydrates in vegetative organs and fruits of different Musa spp. accessions. FRONTIERS IN PLANT SCIENCE 2015; 6:395. [PMID: 26106398 PMCID: PMC4460310 DOI: 10.3389/fpls.2015.00395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 05/18/2015] [Indexed: 05/26/2023]
Abstract
The water soluble carbohydrates (WSC) glucose, fructose, and sucrose are well-known to the great public, but fructans represent another type of WSC that deserves more attention given their prebiotic and immunomodulatory properties in the food context. Although the occurrence of inulin-type fructo-oligosaccharides (FOS) was proposed in the fruit of some banana accessions, little or no information is available neither on the exact identity of the fructan species, nor on the fructan content in different parts of banana plants and among a broader array of banana cultivars. Here, we investigated the WSC composition in leaves, pulp of ripe fruits and rhizomes from mature banana plants of 11 accessions (I to XI), including both cultivated varieties and wild Musa species. High performance anion exchange chromatography with integrated pulsed amperometric detection (HPAEC-IPAD) showed the presence of 1-kestotriose [GF2], inulobiose [F2], inulotriose [F3], 6-kestotriose and 6G-kestotriose (neokestose) fructan species in the pulp of mature fruits of different accessions, but the absence of 1,1-nystose and 1,1,1 kestopentaose and higher degree of polymerization (DP) inulin-type fructans. This fructan fingerprint points at the presence of one or more invertases that are able to use fructose and sucrose as alternative acceptor substrates. Quantification of glucose, fructose, sucrose and 1-kestotriose and principal component analysis (PCA) identified related banana groups, based on their specific WSC profiles. These data provide new insights in the biochemical diversity of wild and cultivated bananas, and shed light on potential roles that fructans may fulfill across species, during plant development and adaptation to changing environments. Furthermore, the promiscuous behavior of banana fruit invertases (sucrose and fructose as acceptor substrates besides water) provides a new avenue to boost future work on structure-function relationships on these enzymes, potentially leading to the development of genuine banana fructosyltransferases that are able to increase fructan content in banana fruits.
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Affiliation(s)
| | | | | | | | - Rudy Vergauwen
- Laboratory of Molecular Plant Biology, KU LeuvenLeuven, Belgium
| | - Timmy Reijnders
- Laboratory of Molecular Plant Biology, KU LeuvenLeuven, Belgium
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