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Xu X, Jiang Y, Yeo QX, Zhou W. Purification and characterization of betacyanin monomers from Hylocereus polyrhizus peel: A comparative study of their antioxidant and antidiabetic activities with mechanistic insights. Food Chem 2024; 451:139467. [PMID: 38678661 DOI: 10.1016/j.foodchem.2024.139467] [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: 07/08/2023] [Revised: 04/14/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
Betacyanins have garnered escalating research interest for their promising bioactivities. However, substantial challenges in purification and separation have impeded a holistic comprehension of the distinct bioactivities of individual betacyanins and their underlying mechanisms. Herein, betanin and phyllocactin monomers with purity exceeding 95% were successfully obtained from Hylocereus polyrhizus peel using a feasible protocol. These monomers were subsequently employed for comparative bioactivity assessments to uncover underlying mechanisms and illuminate structure-activity relationships. Interestingly, phyllocactin exhibited superior antioxidant activities and 36.1% stronger inhibitory activity on α-glucosidase compared to betanin. Mechanistic studies have revealed that they function as mixed-type inhibitors of α-amylase and competitive inhibitors of α-glucosidase, with interactions predominantly driven by hydrogen bonding. Notably, phyllocactin demonstrated a greater binding affinity with enzymes than betanin, thereby substantiating its heightened inhibitory activity. Overall, our results highlight novel bioactivities of betacyanin monomers and provide profound insights into the intricate interplay between structures and properties.
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Affiliation(s)
- Xiaojuan Xu
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore 117542, Republic of Singapore
| | - Yingfen Jiang
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore 117542, Republic of Singapore
| | - Qi Xuan Yeo
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore 117542, Republic of Singapore
| | - Weibiao Zhou
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore 117542, Republic of Singapore; National University of Singapore (Suzhou) Research Institute, 377 Linquan Street, Suzhou Industrial Park, Jiangsu 215123, China.
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2
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Cruz S, Checa N, Tovar H, Cejudo-Bastante MJ, Heredia FJ, Hurtado N. Semisynthesis of Betaxanthins from Purified Betacyanin of Opuntia dillenii sp.: Color Stability and Antiradical Capacity. Molecules 2024; 29:2116. [PMID: 38731607 PMCID: PMC11085281 DOI: 10.3390/molecules29092116] [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: 04/03/2024] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
The availability of pure individual betalains in sufficient quantities which permit deeper understanding is still a challenge. This study investigates the high-yielding semisynthesis of betaxanthins using betalamic acid from a natural source (Opuntia dillenii), followed by condensation with ʟ-amino acids and further purification. Moreover, the color stability of the four synthesized individual betaxanthins, namely proline (ʟ-ProBX), alanine (ʟ-AlaBX), leucine (ʟ-LeuBX), and phenylalanine (ʟ-PheBX) betaxanthins, was investigated at different pHs. Their relative contribution to free radical scavenging was also scrutinized by TEAC and DPPH. ʟ-AlaBX and ʟ-LeuBx showed a significantly (p < 0.05) higher antioxidant activity, whereas ʟ-ProBX was the most resistant to the hydrolysis of betaxanthin and hence the least susceptible to color change. The color stability was strongly influenced by pH, with the color of ʟ-ProBX, ʟ-LeuBX, and ʟ-AlaBX at pH 6 being more stable, probably due to the easier hydrolysis under acid conditions. The semisynthesis and purification allowed us to have available remarkable quantities of pure individual betaxanthins of Opuntia dillenii for the first time, and to establish their color properties and antioxidant capacity. This study could be a step forward in the development of the best natural food colorant formulation, based on the betalain structure, which is of special interest in food technology.
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Affiliation(s)
- Silvia Cruz
- Grupo de Investigación en Productos de Importancia Biológica (GIPIB), Universidad de Nariño, San Juan de Pasto, Nariño 1175, Colombia; (S.C.); (N.C.); (H.T.); (N.H.)
| | - Neyder Checa
- Grupo de Investigación en Productos de Importancia Biológica (GIPIB), Universidad de Nariño, San Juan de Pasto, Nariño 1175, Colombia; (S.C.); (N.C.); (H.T.); (N.H.)
| | - Hugo Tovar
- Grupo de Investigación en Productos de Importancia Biológica (GIPIB), Universidad de Nariño, San Juan de Pasto, Nariño 1175, Colombia; (S.C.); (N.C.); (H.T.); (N.H.)
| | - María Jesús Cejudo-Bastante
- Food Colour and Quality Laboratory, Área de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain;
| | - Francisco J. Heredia
- Food Colour and Quality Laboratory, Área de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain;
| | - Nelson Hurtado
- Grupo de Investigación en Productos de Importancia Biológica (GIPIB), Universidad de Nariño, San Juan de Pasto, Nariño 1175, Colombia; (S.C.); (N.C.); (H.T.); (N.H.)
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3
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Wang Y, Adekolurejo OO, Wang B, McDermott K, Do T, Marshall LJ, Boesch C. Bioavailability and excretion profile of betacyanins - Variability and correlations between different excretion routes. Food Chem 2024; 437:137663. [PMID: 37879158 DOI: 10.1016/j.foodchem.2023.137663] [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: 12/29/2022] [Revised: 04/02/2023] [Accepted: 10/03/2023] [Indexed: 10/27/2023]
Abstract
The present study addresses the knowledge gap in betalain bioavailability, transformation and excretion. Analysis of renal and fecal excretion profiles in humans after consumption of beetroot revealed very low bioavailability (renal recovery of 0.13 %) and fast elimination of pigments (renal elimination rate constant of 0.16 h-1), while the majority of betalains underwent severe depletion during GI transit, evidenced by decarboxylation, deglucosidation and dehydrogenation. Betacyanin metabolite levels in human urine were positively associated with those in stools (p < 0.05), indicating significant impact of pigment metabolism in the gut on their bioavailability. In addition, the current study revealed large inter-individual and compositional variabilities of pigment after colonic fermentation compared with systemic metabolism, likely attributed to the increasing complexity of intestinal environment with diverse gut microbiota. To conclude, intestinal uptake and systemic metabolism of betacyanins are intimately associated with their intestinal biotransformation, with gut microbiota serving as a crucial factor.
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Affiliation(s)
- Yunqing Wang
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, LS2 9JT, United Kingdom
| | - Opeyemi O Adekolurejo
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, LS2 9JT, United Kingdom; School of Biology, Faculty of Biological Sciences, University of Leeds, LS2 9JT, United Kingdom
| | - Binying Wang
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, LS2 9JT, United Kingdom
| | - Katie McDermott
- School of Biology, Faculty of Biological Sciences, University of Leeds, LS2 9JT, United Kingdom
| | - Thuy Do
- School of Dentistry, Faculty of Medicine and Health, University of Leeds, LS2 9LU, United Kingdom
| | - Lisa J Marshall
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, LS2 9JT, United Kingdom
| | - Christine Boesch
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, LS2 9JT, United Kingdom.
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4
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Alotaiby S, Zhao X, Boesch C, Sergeeva NN. Sustainable approach towards isolation of photosynthetic pigments from Spirulina and the assessment of their prooxidant and antioxidant properties. Food Chem 2024; 436:137653. [PMID: 37832415 DOI: 10.1016/j.foodchem.2023.137653] [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: 06/29/2023] [Revised: 08/14/2023] [Accepted: 09/30/2023] [Indexed: 10/15/2023]
Abstract
Carotenoids, chlorophyll and phycocyanin are three types of photosynthetic pigments found in Spirulina that differ in colour, composition, stability, solubility, and commercial importance. Such diversity of structures creates a challenge to extract these pigments simultaneously from the same batch of raw material in an efficient and sustainable manner. This study demonstrates that water can be successfully used as a single solvent together with combined (non)mechanical cell membrane disruption techniques (ultrasonication, centrifugation, freezing/thawing cycle) to extract these photosynthetic pigments from the same batch. This water-based approach delivers a significant improvement in isolating green pigments, which are often overlooked during extraction due to a preference for blue and yellow pigments. Chlorophyll was quantitatively converted to its stable derivatives to carry out a comparative analysis of antioxidant properties (DPPH, TEAC, FRAP), singlet oxygen production and intracellular activities (MTT, ROS assays) using Caco-2 cells.
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Affiliation(s)
- Shorog Alotaiby
- School of Design, University of Leeds, LS2 9JT, United Kingdom; Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh 11671, Saudi Arabia
| | - Xiao Zhao
- School of Food Science and Nutrition, University of Leeds, LS2 9JT, United Kingdom; School of Agriculture and Forestry Science, Hebei North University, Zhangjiakou 075000, China
| | - Christine Boesch
- School of Food Science and Nutrition, University of Leeds, LS2 9JT, United Kingdom
| | - Natalia N Sergeeva
- School of Design, University of Leeds, LS2 9JT, United Kingdom; The Leeds Institute of Textile and Colour, University of Leeds, LS2 9JT, United Kingdom.
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Gómez-López I, Eseberri I, Cano MP, Portillo MP. Anti-Obesity Effect of Different Opuntia stricta var. dillenii's Prickly Pear Tissues and Industrial By-Product Extracts in 3T3-L1 Mature Adipocytes. Nutrients 2024; 16:499. [PMID: 38398824 PMCID: PMC10892177 DOI: 10.3390/nu16040499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/03/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Opuntia stricta var. dillenii fruit is a source of phytochemicals, such as betalains and phenolic compounds, which may play essential roles in health promotion. The aim of this research was to study the triglyceride-lowering effect of green extracts, obtained from Opuntia stricta var. dillenii fruit (whole fruit, pulp, peel, and industrial by-products (bagasse)) in 3T3-L1 mature adipocytes. The cells were treated on day 12, for 24 h, after the induction of differentiation with the extracts, at doses of 10, 25, 50, or 100 μg/mL. The expression of genes (PCR-RT) and proteins (Western blot) involved in fatty acid synthesis, fatty acid uptake, triglyceride assembly, and triglyceride mobilisation was determined. The fruit pulp extraction yielded the highest levels of betalains, whereas the peel displayed the greatest concentration of phenolic compounds. The extracts from whole fruit, peel and pulp were effective in reducing triglyceride accumulation at doses of 50 μg/mL or higher. Bagasse did not show this effect. The main mechanisms of action underpinning this outcome encompass a reduction in fatty acids synthesis (de novo lipogenesis), thus limiting their availability for triglyceride formation, alongside an increase in triglyceride mobilisation. However, their reliance is contingent upon the specific Opuntia extract.
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Affiliation(s)
- Iván Gómez-López
- Laboratory of Phytochemistry and Plant Food Functionality, Biotechnology and Food Microbiology Department, Institute of Food Science Research (CIAL) (CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain; (I.G.-L.); (M.P.C.)
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Center, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain;
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 01006 Vitoria-Gasteiz, Spain
| | - Itziar Eseberri
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Center, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain;
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 01006 Vitoria-Gasteiz, Spain
- BIOARABA Institute of Health, 01006 Vitoria-Gasteiz, Spain
| | - M. Pilar Cano
- Laboratory of Phytochemistry and Plant Food Functionality, Biotechnology and Food Microbiology Department, Institute of Food Science Research (CIAL) (CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain; (I.G.-L.); (M.P.C.)
| | - María P. Portillo
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Center, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain;
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 01006 Vitoria-Gasteiz, Spain
- BIOARABA Institute of Health, 01006 Vitoria-Gasteiz, Spain
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6
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Fernando GSN, Sergeeva NN, Vagkidis N, Chechik V, Marshall LJ, Boesch C. Differential Effects of Betacyanin and Betaxanthin Pigments on Oxidative Stress and Inflammatory Response in Murine Macrophages. Mol Nutr Food Res 2023; 67:e2200583. [PMID: 37203590 DOI: 10.1002/mnfr.202200583] [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: 08/31/2022] [Revised: 04/02/2023] [Indexed: 05/20/2023]
Abstract
SCOPE Betalain pigments are increasingly highlighted for their bioactive and anti-inflammatory properties, although research is lacking to demonstrate contributions of individual betalains. The work herein aimed to compare effects of four main betalains on inflammatory and cell-protective markers and to highlight potential structure-related relationships of the two main subgroups: betacyanins vs betaxanthins. METHODS AND RESULTS Murine RAW 264.7 macrophages were stimulated with bacterial lipopolysaccharide following incubation with betacyanins (betanin, neobetanin) and betaxanthins (indicaxanthin, vulgaxanthin I) in concentrations from 1 to 100 µM. All betalains suppressed expression of pro-inflammatory markers IL-6, IL-1β, iNOS, and COX-2 with tendency for stronger effects of betacyanins compared to betaxanthins. In contrast, HO-1 and gGCS showed mixed and only moderate induction, while more emphasized effects were observed for betacyanins. While all betalains suppressed mRNA levels of NADPH oxidase 2 (NOX-2), a superoxide generating enzyme, only betacyanins were able to counteract hydrogen peroxide induced reactive oxygen species (ROS) generation, in alignment with their radical scavenging potential. Furthermore, betaxanthins exerted pro-oxidant properties, elevating ROS production beyond hydrogen peroxide stimulation. CONCLUSION In summary, all betalains display anti-inflammatory properties, although only betacyanins demonstrate radical scavenging capacities, indicating potential differing responses under oxidative stress conditions, which requires further research.
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Affiliation(s)
- Ganwarige Sumali N Fernando
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds, LS2 9JT, UK
- Department of Food Science and Technology, Faculty of Agriculture, University of Ruhuna, Kamburupitiya, 81100, Sri Lanka
| | - Natalia N Sergeeva
- School of Design and the Leeds Institute of Textile and Colour, University of Leeds, Leeds, LS2 9JT, UK
| | - Nikolaos Vagkidis
- Department of Chemistry, University of York, York YO10 5DD, Heslington, UK
| | - Victor Chechik
- Department of Chemistry, University of York, York YO10 5DD, Heslington, UK
| | - Lisa J Marshall
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds, LS2 9JT, UK
| | - Christine Boesch
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds, LS2 9JT, UK
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7
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Kumorkiewicz-Jamro A, Górska R, Krok-Borkowicz M, Reczyńska-Kolman K, Mielczarek P, Popenda Ł, Spórna-Kucab A, Tekieli A, Pamuła E, Wybraniec S. Betalains isolated from underexploited wild plant Atriplex hortensis var. rubra L. exert antioxidant and cardioprotective activity against H9c2 cells. Food Chem 2023; 414:135641. [PMID: 36809729 DOI: 10.1016/j.foodchem.2023.135641] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/11/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023]
Abstract
Atriplex hortensis var. rubra L. extracts prepared from leaves, seeds with sheaths, and stems were characterized for betalainic profiles by spectrophotometry, LC-DAD-ESI-MS/MS and LC-Orbitrap-MS techniques. The presence of 12 betacyanins in the extracts was strongly correlated with high antioxidant activity measured by ABTS, FRAP, and ORAC assays. Comparative assessment between samples indicated the highest potential for celosianin and amaranthin (IC50 21.5 and 32.2 μg/ml, respectively). The chemical structure of celosianin was elucidated for the first time by complete 1D and 2D NMR analysis. Our findings also demonstrate that betalain-rich A. hortensis extracts and purified pigments (amaranthin and celosianin) do not induce cytotoxicity in a wide concentration range in rat cardiomyocytes model (up to 100 μg/ml for extracts and 1 mg/ml for pigments). Furthermore, tested samples effectively protect H9c2 cells from H2O2-induced cell death and prevent from apoptosis induced by Paclitaxel. The effects were observed at sample concentrations between 0.1 and 10 μg/ml.
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Affiliation(s)
- Agnieszka Kumorkiewicz-Jamro
- Department of Chemical Technology and Environmental Analysis, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland; South Australian Health and Medical Research Institute, Adelaide 5000 SA, Australia; Faculty of Health and Medical Science, University of Adelaide, Adelaide 5005 SA, Australia.
| | - Renata Górska
- Department of Chemical Technology and Environmental Analysis, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Małgorzata Krok-Borkowicz
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Katarzyna Reczyńska-Kolman
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Przemysław Mielczarek
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Cracow, Poland; Laboratory of Proteomics and Mass Spectrometry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343 Cracow, Poland
| | - Łukasz Popenda
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Aneta Spórna-Kucab
- Department of Chemical Technology and Environmental Analysis, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Anna Tekieli
- Department of Chemical Technology and Environmental Analysis, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
| | - Elżbieta Pamuła
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Sławomir Wybraniec
- Department of Chemical Technology and Environmental Analysis, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
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Effect of two-week red beetroot juice consumption on modulation of gut microbiota in healthy human volunteers - A pilot study. Food Chem 2023; 406:134989. [PMID: 36527987 DOI: 10.1016/j.foodchem.2022.134989] [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: 06/30/2022] [Revised: 10/18/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
With very little research exploring intestinal effects of red beetroot consumption, the present pilot study investigated gut microbial changes following red beetroot consumption, via a 14-day intervention trial in healthy adults. Compared to baseline, the study demonstrates transient changes in abundance of some taxa e.g., Romboutsia and Christensenella, after different days of intervention (p < 0.05). Enrichment of Akkermansia muciniphila and decrease of Bacteroides fragilis (p < 0.05) were observed after 3 days of juice consumption, followed by restoration in abundance after 14 days. With native betacyanins and catabolites detected in stool after juice consumption, betacyanins were found to correlate positively with Bifidobacterium and Coprococcus, and inversely with Ruminococcus (p < 0.1), potentiating a significant rise in (iso)butyric acid content (172.7 ± 30.9 µmol/g stool). Study findings indicate the potential of red beetroot to influence gut microbial populations and catabolites associated with these changes, emphasizing the potential benefit of red beetroot on intestinal as well as systemic health.
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Structural Effects on the Antioxidant Properties of Amino Acid Betaxanthins. Antioxidants (Basel) 2022; 11:antiox11112259. [DOI: 10.3390/antiox11112259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Betaxanthins are natural products with high antioxidant and anti-inflammatory properties. Here, we describe the semisynthesis of twenty-one betaxanthins derived from proteinogenic amino acids, including the elusive betaxanthin of l-cysteine and two betaxanthins derived from l-lysine, and rationalize their antioxidant properties in mechanistic terms. The antioxidant capacity and redox potential of these betaxanthins were compared to those of model betaxanthins derived from dopamine, l-DOPA (L-3,4-dihydroxyphenylalanine), and pyrrolidine and structure–property relationships were established by using matched molecular pair analysis and a model developed using a genetic algorithm. Either a phenol or indole moiety enhance the antioxidant capacity of betaxanthins, which is overall much higher than that of their amino acid precursors and standard antioxidants, except for the cysteine-betaxanthin. The one-electron oxidation of amino acid betaxanthins produces radicals stabilized in multiple centers, as demonstrated by quantum chemical calculations.
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10
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Wang Y, Fernando GSN, Sergeeva NN, Vagkidis N, Chechik V, Do T, Marshall LJ, Boesch C. Uptake and Immunomodulatory Properties of Betanin, Vulgaxanthin I and Indicaxanthin towards Caco-2 Intestinal Cells. Antioxidants (Basel) 2022; 11:antiox11081627. [PMID: 36009345 PMCID: PMC9405451 DOI: 10.3390/antiox11081627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 11/30/2022] Open
Abstract
The present study aimed to compare the absorption and transport patterns of three main betalains, betanin, vulgaxanthin I and indicaxanthin, into intestinal epithelial cells and to assess their distinct molecular effects on inflammatory and redox-related cell signalling in association with their radial scavenging potencies. All three betalains showed anti-inflammatory effects (5–80 μM), reflected by attenuated transcription of pro-inflammatory mediators such as cyclooxygenase-2 and inducible NO-synthase. Concomitant increases in antioxidant enzymes such as heme oxygenase-1 were only observed for betanin. Moreover, betanin uniquely demonstrated a potent dose-dependent radical scavenging activity in EPR and cell-based assays. Results also indicated overall low permeability for the three betalains with Papp of 4.2–8.9 × 10−7 cm s−1. Higher absorption intensities of vulgaxanthin and indicaxanthin may be attributed to smaller molecular sizes and greater lipophilicity. In conclusion, betanin, vulgaxanthin I and indicaxanthin have differentially contributed to lowering inflammatory markers and mitigating oxidative stress, implying the potential to ameliorate inflammatory intestinal disease. Compared with two betaxanthins, the greater efficacy of betanin in scavenging radical and promoting antioxidant response might, to some extent, compensate for its poorer absorption efficiency, as demonstrated by the Caco-2 cell model.
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Affiliation(s)
- Yunqing Wang
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
| | - Ganwarige Sumali N. Fernando
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Natalia N. Sergeeva
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds LS2 9JT, UK
- School of Design, Faculty of Art, Humanities and Cultures, University of Leeds, Leeds LS2 9JT, UK
| | | | - Victor Chechik
- Department of Chemistry, University of York, York YO10 5DD, UK
| | - Thuy Do
- School of Dentistry, Faculty of Medicine and Health, University of Leeds, Leeds LS2 9LU, UK
| | - Lisa J. Marshall
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
| | - Christine Boesch
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
- Correspondence: ; Tel.: +44-1133430268
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