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Bucci P, Casas A, Martins P, Meyer A, Cantero D, Muñoz R. A comparative assessment of treatment methods to release ferulic and p-cumaric acids from Brewer's Spent Grains. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 188:39-47. [PMID: 39098271 DOI: 10.1016/j.wasman.2024.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/18/2024] [Accepted: 07/21/2024] [Indexed: 08/06/2024]
Abstract
Brewers' spent grain (BSG) is the main byproduct from the brewing industry, which accounts for 85 % of the total waste generated during beer production. This lignocellulosic material is traditionally used as livestock feed and sold at a low price. However, BSG can be used as a low-cost feedstock for the production of bioactive molecules and chemicals precursors, upgrading the value of this byproduct. In this context, BSG is a promising feedstock for the extraction of antioxidants like ferulic acid (FA) and p-coumaric acid (p-Cu). The effectiveness of three hydrolysis treatments were evaluated for the extraction of FA and p-Cu from BSG, namely enzymatic (based on the synergistic cooperation between a feruloyl esterase and an endo-1,4-β-xylanase), alkaline and hydrothermal. The hydrothermal treatment produced the highest extraction yields (7.2 g/kgBSG and 1.4 g/kgBSG for FA and p-Cu, respectively) in a short extraction time (an hour). On the other hand, enzymatic hydrolysis extracted 4.3 g/kgBSG for FA and negligible yields for p-Cu in 4 h of incubation at 25 °C. Yields of 5.5 g/kgBSG for FA and 0.6 g/kgBSG for p-Cu were obtained in more than 5 h of alkaline treatment at 120 °C. The mass and energy balances revealed the high dependence of the operating costs on the concentration of BSG used during the extraction process, with costs of 34.5 €, 6607 € and 205.5 € per kg of FA for the chemical, enzymatic and hydrothermal extraction methods at 100 kg BSG/m3.
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Affiliation(s)
- P Bucci
- Institute of Sustainable Processes, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n, 47011, Spain
| | - A Casas
- The Institute of Bioeconomy. Calle Dr Mergelina S/N, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Valladolid 47011, Spain
| | - P Martins
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, Building 221, DK-2800 Kgs. Lyngby, Denmark
| | - A Meyer
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, Building 221, DK-2800 Kgs. Lyngby, Denmark
| | - D Cantero
- The Institute of Bioeconomy. Calle Dr Mergelina S/N, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Valladolid 47011, Spain
| | - R Muñoz
- Institute of Sustainable Processes, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n, 47011, Spain.
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Taibi A, Lofft Z, Laytouni-Imbriaco B, Comelli EM. The role of intestinal microbiota and microRNAs in the anti-inflammatory effects of cranberry: from pre-clinical to clinical studies. Front Nutr 2023; 10:1092342. [PMID: 37287997 PMCID: PMC10242055 DOI: 10.3389/fnut.2023.1092342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 05/05/2023] [Indexed: 06/09/2023] Open
Abstract
Cranberries have known anti-inflammatory properties, which extend their benefits in the context of several chronic diseases. These benefits highly rely on the polyphenol profile of cranberries, one of few foods rich in A-type proanthocyanidin (PAC). A-type PAC comprises flavan-3-ol subunits with an additional interflavan ether bond in the conformational structure of the molecule, separating them from the more commonly found B-type PAC. PACs with a degree of polymerization higher than three are known to reach the colon intact, where they can be catabolyzed by the gut microbiota and biotransformed into lower molecular weight organic acids that are available for host absorption. Gut microbiota-derived metabolites have garnered much attention in the past decade as mediators of the health effects of parent compounds. Though, the mechanisms underlying this phenomenon remain underexplored. In this review, we highlight emerging evidence that postulates that polyphenols, including ones derived from cranberries, and their metabolites could exert anti-inflammatory effects by modulating host microRNAs. Our review first describes the chemical structure of cranberry PACs and a pathway for how they are biotransformed by the gut microbiota. We then provide a brief overview of the benefits of microbial metabolites of cranberry in the intestinal tract, at homeostasis and in inflammatory conditions. Finally, we discuss the role of microRNAs in intestinal health and in response to cranberry PAC and how they could be used as targets for the maintenance of intestinal homeostasis. Most of this research is pre-clinical and we recognize that conducting clinical trials in this context has been hampered by the lack of reliable biomarkers. Our review discusses the use of miRNA as biomarkers in this context.
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Affiliation(s)
- Amel Taibi
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
| | - Zoe Lofft
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
| | | | - Elena Maria Comelli
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
- Joannah and Brian Lawson Centre for Child Nutrition, University of Toronto, Toronto, ON, Canada
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Arabsalehi F, Rahimmalek M, Sabzalian MR, Ghanadian M, Matkowski A, Szumny A. Changes in polyphenolic composition, physiological characteristics, and yield-related traits of Moshgak (Ducrosia anethifolia Boiss.) populations in response to drought stress. PROTOPLASMA 2023; 260:967-985. [PMID: 36526928 DOI: 10.1007/s00709-022-01828-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Ducrosia anethifolia (DC.) Boiss. is an aromatic medicinal plant that has been traditionally used as an analgesic to treat headaches, backaches, colic, and cold. This study evaluated the yield, physiological, and phytochemical traits of 24 populations for 2 consecutive years under the water stress condition. The seed yield and physiological traits demonstrated the highest values in the first and second year, respectively. Hydrogen peroxide (H2O2), proline, malondialdehyde (MDA), and antioxidant activity enzymes were elevated, while chlorophyll, carotenoids, relative water content (RWC), and yield decreased under drought stress. High-performance liquid chromatography (HPLC) was also applied to assess the changes in some polyphenolic compounds in response to water stress. The increase in some phenolic compounds, such as p-coumaric acid, was recorded due to drought stress, while there was a decrease in flavonoids, that is luteolin and quercetin. Among the populations, Abarkuh2 indicated the highest increase in p-coumaric acid (96%) in response to drought stress. In general, high diversity among the studied populations provides new insights into choosing the beneficial populations for medicinal and food purposes. HIGHLIGHTS: • Changes in polyphenolics of Moshgak populations were obtained in response to water stress. • Gallic acid, ferulic acid, p-coumaric acid and vanillic acid were the major components. • The phenolic compounds was increased due to drought stress while flavonoids were decreased High variation was obtained between Moshgak populations.
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Affiliation(s)
- Fatemeh Arabsalehi
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Mehdi Rahimmalek
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
- Department of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
| | - Mohammad R Sabzalian
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Mustafa Ghanadian
- Department of Pharmacognosy, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Adam Matkowski
- Department of Pharmaceutical Biology and Botany, Wroclaw Medical University, Borowska 211, 50-556, Wroclaw, Poland
| | - Antoni Szumny
- Department of Food Chemistry and Biocatalysis, Wroclaw University of Life Sciences, Norwida 25, 50-375, Wroclaw, Poland
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Combining Transcriptomics and Polyphenol Profiling to Provide Insights into Phenolics Transformation of the Fermented Chinese Jujube. Foods 2022; 11:foods11172546. [PMID: 36076732 PMCID: PMC9455259 DOI: 10.3390/foods11172546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022] Open
Abstract
As an important medicine homologous food, Chinese jujube is rich in nutrition and medicinal value. To enhance the bioactive compounds level of Chinese jujube products, three kinds of fungi strains (Rhizopus oryzae, Aspergillus niger and Monascus purpureus) were firstly selected to evaluate their effects on total soluble phenolic compounds (TSPC) and total soluble flavonoids compounds (TSFC) contents during liquid state fermentation of Chinese jujube. As the best strain, the highest contents of TSPC and TSFC could increase by 102.1% (26.02 mg GAE/g DW) and 722.8% (18.76 mg RE/g DW) under M. purpureus fermentation when compared to the unfermented sample, respectively. Qualitative and quantitative analysis of individual polyphenol compounds indicated that proto-catechuic acid, p-hydroxybenzoic acid and chlorogenic acid showed the highest level in the fer-mented Chinese jujube at the 7th day, which was enhanced by 16.72-, 14.05- and 6.03-fold when compared to the control, respectively. Combining with RNA sequencing, function annotation of CAZymes database and polyphenol profiling, three potential transformation pathways of poly-phenol compounds were proposed in the fermented Chinese jujube by M. purpureus, such as the conversion of insoluble bound phenolic acids, rutin and anthocyanin degradation. These findings would be beneficial for better understanding of the biotransformation mechanism of polyphenol compounds in fungi fermentation.
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Phytophenol Dimerization Reaction: From Basic Rules to Diastereoselectivity and Beyond. Molecules 2022; 27:molecules27154842. [PMID: 35956790 PMCID: PMC9369853 DOI: 10.3390/molecules27154842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 11/21/2022] Open
Abstract
Phytophenol dimerization, which is a radical-mediated coupling reaction, plays a critical role in many fields, including lignin biosynthesis. To understand the reaction, 2,2-diphenyl-1-picrylhydrazyl radical was used to initiate a series of phytophenol dimerization reactions in methanol. The products were identified using ultra-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry (UHPLC-ESI-Q-TOF-MS/MS) analysis in situ. The identified products mainly included biphenols, magnolol, honokiol, gingerol 6,6′-dimers, 3,6-dimethoxylcatechol β,β′ dimer, euphorbetin, bis-eugenol, dehydrodiisoeugenol, trans-ε-viniferin, (+) pinoresinol, and (−) pinoresinol. Structure–function relationship analysis allowed four basic rules to be defined: meta-excluded, C–C bonding domination, ortho-diOH co-activation, and exocyclic C=C involvement. The exocyclic C=C involvement, however, required conjugation with the phenolic core and the para-site of the -OH group, to yield a furan-fused dimer with two chiral centers. Computational chemistry indicated that the entire process was completed via a radical coupling reaction and an intramolecular conjugate addition reaction. Similar results were also found for the horseradish peroxidase (HRP)-catalyzed coniferyl alcohol dimerization, which produced (+) and (−) pinoresinols (but no (−) epipinoresinol), suggesting that the HRP-catalyzed process was essentially an exocyclic C=C-involved phytophenol dimerization reaction. The reaction was highly diastereoselective. This was attributed to the intramolecular reaction, which prohibited Re-attack. The four basic rules and diastereoselectivity can explain and even predict the main products in various chemical and biological events, especially oxidase-catalyzed lignin cyclization.
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Di Lella S, La Porta N, Tognetti R, Lombardi F, Nardin T, Larcher R. White rot fungal impact on the evolution of simple phenols during decay of silver fir wood by UHPLC-HQOMS. PHYTOCHEMICAL ANALYSIS : PCA 2022; 33:170-183. [PMID: 34322910 PMCID: PMC9290616 DOI: 10.1002/pca.3077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/09/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
INTRODUCTION Silver fir (Abies alba Mill.) is one of the most valuable conifer wood species in Europe. Among the main opportunistic pathogens that cause root and butt rot on silver fir are Armillaria ostoyae and Heterobasidion abietinum. Due to the different enzymatic pools of these wood-decay fungi, different strategies in metabolizing the phenols were available. OBJECTIVE This work explores the changes in phenolic compounds during silver fir wood degradation. METHODOLOGY Phenols were analyzed before and after fungus inoculation in silver fir macerated wood after 2, 4 and 6 months. All samples were analyzed using high-performance liquid chromatography coupled to a hybrid quadrupole-orbitrap mass spectrometer. RESULTS Thirteen compounds, including simple phenols, alkylphenyl alcohols, hydroxybenzoketones, hydroxycinnamaldehydes, hydroxybenzaldehydes, hydroxyphenylacetic acids, hydroxycinnamic acids, hydroxybenzoic acids and hydroxycoumarins, were detected. Pyrocatechol, coniferyl alcohol, acetovanillone, vanillin, benzoic acid, 4-hydroxybenzoic acid and vanillic acid contents decreased during the degradation process. Methyl vanillate, ferulic acid and p-coumaric were initially produced and then degraded. Scopoletin was accumulated. Pyrocatechol, acetovanillone and methyl vanillate were found for the first time in both degrading and non-degrading wood of silver fir. CONCLUSIONS Despite differences in the enzymatic pool, both fungi caused a significant decrease in the amounts of phenolic compounds with the accumulation of the only scopoletin. Principal component analysis revealed an initial differentiation between the degradation activity of the two fungal species during degradation, but similar phenolic contents at the end of wood degradation.
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Affiliation(s)
- Stefania Di Lella
- Department of Biosciences and TerritoryUniversity of MolisePescheItaly
- Research and Innovation CentreFondazione Edmund MachSan Michele all'AdigeItaly
- Department of Agricultural, Environmental and Food SciencesUniversity of MoliseCampobassoItaly
| | - Nicola La Porta
- Research and Innovation CentreFondazione Edmund MachSan Michele all'AdigeItaly
- The EFI Project Centre on Mountain Forests (MOUNTFOR)Edmund Mach FoundationTrentoItaly
| | - Roberto Tognetti
- Department of Agricultural, Environmental and Food SciencesUniversity of MoliseCampobassoItaly
- The EFI Project Centre on Mountain Forests (MOUNTFOR)Edmund Mach FoundationTrentoItaly
| | - Fabio Lombardi
- Department of AgrariaUniversity Mediterranea of Reggio CalabriaReggio CalabriaItaly
| | - Tiziana Nardin
- Technology Transfer CentreFondazione Edmund MachSan Michele all'AdigeItaly
| | - Roberto Larcher
- Technology Transfer CentreFondazione Edmund MachSan Michele all'AdigeItaly
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7
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Arcopilus eremanthusum sp. nov. as sources of antibacterial and antioxidant metabolites. Arch Microbiol 2022; 204:156. [DOI: 10.1007/s00203-022-02764-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 12/17/2021] [Accepted: 01/19/2022] [Indexed: 02/04/2023]
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8
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Zhang W, Li X, Hua Y, Li Z, Chen B, Liu A, Lu W, Zhao X, Diao Y, Chen D. Antioxidant product analysis of Hulu Tea ( Tadehagi triquetrum). NEW J CHEM 2021. [DOI: 10.1039/d1nj02639a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phytophenols from Hulu Tea can produce not only homodimers but also a heterodimer through the antioxidant activity.
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Affiliation(s)
- Wenhui Zhang
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xican Li
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yujie Hua
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Zhen Li
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Ban Chen
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Aijun Liu
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Wenbiao Lu
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xiaojun Zhao
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yuanming Diao
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Dongfeng Chen
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
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Yarmohammadi F, Rezaee R, Karimi G. Natural compounds against doxorubicin-induced cardiotoxicity: A review on the involvement of Nrf2/ARE signaling pathway. Phytother Res 2020; 35:1163-1175. [PMID: 32985744 DOI: 10.1002/ptr.6882] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/01/2020] [Accepted: 08/28/2020] [Indexed: 12/12/2022]
Abstract
Cardiotoxicity is the main concern for long-term use of the doxorubicin (DOX). Reactive oxygen species (ROS) generation leads to oxidative stress that significantly contributes to the cardiac damage induced by DOX. The nuclear factor erythroid 2-related factor (Nrf2) acts as a protective player against DOX-induced myocardial oxidative stress. Several natural compounds (NCs) with anti-oxidative effects, were examined to suppress DOX cardiotoxicity such as asiatic acid, α-linolenic acid, apigenin, baicalein, β-lapachone, curdione, dioscin, ferulic acid, Ganoderma lucidum polysaccharides, genistein, ginsenoside Rg3, indole-3-carbinol, naringenin-7-O-glucoside, neferine, p-coumaric acid, pristimerin, punicalagin, quercetin, sulforaphane, and tanshinone IIA. The present article, reviews NCs that showed protective effects against DOX-induced cardiac injury through induction of Nrf2 signaling pathway.
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Affiliation(s)
- Fatemeh Yarmohammadi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ramin Rezaee
- Clinical Research Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
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10
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Koc B, Akyuz L, Cakmak YS, Sargin I, Salaberria AM, Labidi J, Ilk S, Cekic FO, Akata I, Kaya M. Production and characterization of chitosan-fungal extract films. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100545] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Abstract
Polyphenols are naturally occurring compounds in plants and they are the most abundant antioxidants in the human diet. Due to their considerable structural diversity, this largely influences their bioavailability. Since a large proportion of polyphenols remains unabsorbed along the gastrointestinal tract, they may accumulate in the large intestine, where most of them are extensively metabolized by the intestinal microbiota. The formation of bioactive polyphenol-derived metabolites may also benefit the health status of the subjects, although the mechanisms have not been delineated. This review aims to highlight the impact of polyphenols on gut health and the modes of action could be through modulation of intestinal barrier function, innate and adaptive immune response, signaling pathways, as well as the ability to modify gut microbiota composition. The review will conclude by presenting future perspective and challenges of polyphenols application in food products to be used for preventing or treating diseases.
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Affiliation(s)
- Murphy L Y Wan
- School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences Building, The University of Hong Kong, Pokfulam, Hong Kong
| | - Vanessa Anna Co
- School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences Building, The University of Hong Kong, Pokfulam, Hong Kong
| | - Hani El-Nezami
- School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences Building, The University of Hong Kong, Pokfulam, Hong Kong.,Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
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12
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Lubbers RJM, Dilokpimol A, Visser J, Mäkelä MR, Hildén KS, de Vries RP. A comparison between the homocyclic aromatic metabolic pathways from plant-derived compounds by bacteria and fungi. Biotechnol Adv 2019; 37:107396. [PMID: 31075306 DOI: 10.1016/j.biotechadv.2019.05.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 04/18/2019] [Accepted: 05/03/2019] [Indexed: 12/13/2022]
Abstract
Aromatic compounds derived from lignin are of great interest for renewable biotechnical applications. They can serve in many industries e.g. as biochemical building blocks for bioplastics or biofuels, or as antioxidants, flavor agents or food preservatives. In nature, lignin is degraded by microorganisms, which results in the release of homocyclic aromatic compounds. Homocyclic aromatic compounds can also be linked to polysaccharides, tannins and even found freely in plant biomass. As these compounds are often toxic to microbes already at low concentrations, they need to be degraded or converted to less toxic forms. Prior to ring cleavage, the plant- and lignin-derived aromatic compounds are converted to seven central ring-fission intermediates, i.e. catechol, protocatechuic acid, hydroxyquinol, hydroquinone, gentisic acid, gallic acid and pyrogallol through complex aromatic metabolic pathways and used as energy source in the tricarboxylic acid cycle. Over the decades, bacterial aromatic metabolism has been described in great detail. However, the studies on fungal aromatic pathways are scattered over different pathways and species, complicating a comprehensive view of fungal aromatic metabolism. In this review, we depicted the similarities and differences of the reported aromatic metabolic pathways in fungi and bacteria. Although both microorganisms share the main conversion routes, many alternative pathways are observed in fungi. Understanding the microbial aromatic metabolic pathways could lead to metabolic engineering for strain improvement and promote valorization of lignin and related aromatic compounds.
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Affiliation(s)
- Ronnie J M Lubbers
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands.
| | - Adiphol Dilokpimol
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands.
| | - Jaap Visser
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands.
| | - Miia R Mäkelä
- Department of Microbiology, University of Helsinki, Viikinkaari 9, Helsinki, Finland.
| | - Kristiina S Hildén
- Department of Microbiology, University of Helsinki, Viikinkaari 9, Helsinki, Finland.
| | - Ronald P de Vries
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands; Department of Microbiology, University of Helsinki, Viikinkaari 9, Helsinki, Finland.
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Hernández-Chávez G, Martinez A, Gosset G. Metabolic engineering strategies for caffeic acid production in Escherichia coli. ELECTRON J BIOTECHN 2019. [DOI: 10.1016/j.ejbt.2018.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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14
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Co-fermentation of the main sugar types from a beechwood organosolv hydrolysate by several strains of Bacillus coagulans results in effective lactic acid production. ACTA ACUST UNITED AC 2018; 18:e00245. [PMID: 29876297 PMCID: PMC5989531 DOI: 10.1016/j.btre.2018.e00245] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 02/11/2018] [Accepted: 02/27/2018] [Indexed: 11/23/2022]
Abstract
Bacillus coagulans is an interesting facultative anaerobic microorganism for biotechnological production of lactic acid that arouses interest. To determine the efficiency of biotechnological production of lactic acid from lignocellulosic feedstock hydrolysates, five Bacillus coagulans strains were grown in lignocellulose organosolv hydrolysate from ethanol/water-pulped beechwood. Parameter estimation based on a Monod-type model was used to derive the basic key parameters for a performance evaluation of the batch process. Three of the Bacillus coagulans strains, including DSM No. 2314, were able to produce lactate, primarily via uptake of glucose and xylose. Two other strains were identified as having the ability of utilizing cellobiose to a high degree, but they also had a lower affinity to xylose. The lactate yield concentration varied from 79.4 ± 2.1 g/L to 93.7 ± 1.4 g/L (85.4 ± 4.7 % of consumed carbohydrates) from the diluted organosolv hydrolysate.
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15
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Aware C, Patil R, Gaikwad S, Yadav S, Bapat V, Jadhav J. Evaluation of l -dopa, proximate composition with in vitro anti-inflammatory and antioxidant activity of Mucuna macrocarpa beans: A future drug for Parkinson treatment. Asian Pac J Trop Biomed 2017. [DOI: 10.1016/j.apjtb.2017.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
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16
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Švarc-Gajić J, Cvetanović A, Segura-Carretero A, Linares IB, Mašković P. Characterisation of ginger extracts obtained by subcritical water. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2016.12.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Heravi MM, Zadsirjan V, Farajpour B. Applications of oxazolidinones as chiral auxiliaries in the asymmetric alkylation reaction applied to total synthesis. RSC Adv 2016. [DOI: 10.1039/c6ra00653a] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this review, a number of applications of chiral oxazolidinones in the asymmetric alkylation reaction applied to total synthesis are described.
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Affiliation(s)
- Majid M. Heravi
- Department of Chemistry
- School of Science
- Alzahra University
- Tehran
- Iran
| | - Vahideh Zadsirjan
- Department of Chemistry
- School of Science
- Alzahra University
- Tehran
- Iran
| | - Behnaz Farajpour
- Department of Chemistry
- School of Science
- Alzahra University
- Tehran
- Iran
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18
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Boz H. p-Coumaric acid in cereals: presence, antioxidant and antimicrobial effects. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12898] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hüseyin Boz
- Gastronomy and Culinary Arts Department; Tourism Faculty; Atatürk University; 25240 Erzurum Turkey
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19
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Keskin C. Antioxidant, Anticancer and Anticholinesterase Activities of Flower, Fruit and Seed Extracts of Hypericum amblysepalum HOCHST. Asian Pac J Cancer Prev 2015; 16:2763-9. [DOI: 10.7314/apjcp.2015.16.7.2763] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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20
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Mäkelä MR, Marinović M, Nousiainen P, Liwanag AJM, Benoit I, Sipilä J, Hatakka A, de Vries RP, Hildén KS. Aromatic metabolism of filamentous fungi in relation to the presence of aromatic compounds in plant biomass. ADVANCES IN APPLIED MICROBIOLOGY 2015; 91:63-137. [PMID: 25911233 DOI: 10.1016/bs.aambs.2014.12.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The biological conversion of plant lignocellulose plays an essential role not only in carbon cycling in terrestrial ecosystems but also is an important part of the production of second generation biofuels and biochemicals. The presence of the recalcitrant aromatic polymer lignin is one of the major obstacles in the biofuel/biochemical production process and therefore microbial degradation of lignin is receiving a great deal of attention. Fungi are the main degraders of plant biomass, and in particular the basidiomycete white rot fungi are of major importance in converting plant aromatics due to their ability to degrade lignin. However, the aromatic monomers that are released from lignin and other aromatic compounds of plant biomass are toxic for most fungi already at low levels, and therefore conversion of these compounds to less toxic metabolites is essential for fungi. Although the release of aromatic compounds from plant biomass by fungi has been studied extensively, relatively little attention has been given to the metabolic pathways that convert the resulting aromatic monomers. In this review we provide an overview of the aromatic components of plant biomass, and their release and conversion by fungi. Finally, we will summarize the applications of fungal systems related to plant aromatics.
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Affiliation(s)
- Miia R Mäkelä
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Mila Marinović
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Paula Nousiainen
- Department of Chemistry, Laboratory of Organic Chemistry, University of Helsinki, Helsinki, Finland
| | - April J M Liwanag
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Isabelle Benoit
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Jussi Sipilä
- Department of Chemistry, Laboratory of Organic Chemistry, University of Helsinki, Helsinki, Finland
| | - Annele Hatakka
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Ronald P de Vries
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Kristiina S Hildén
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
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21
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Formagio ASN, Volobuff CRF, Santiago M, Cardoso CAL, Vieira MDC, Valdevina Pereira Z. Evaluation of Antioxidant Activity, Total Flavonoids, Tannins and Phenolic Compounds in Psychotria Leaf Extracts. Antioxidants (Basel) 2014; 3:745-57. [PMID: 26785238 PMCID: PMC4665508 DOI: 10.3390/antiox3040745] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/23/2014] [Accepted: 09/08/2014] [Indexed: 11/23/2022] Open
Abstract
The antioxidant activity of Psychotria carthagenensis, P. leiocarpa, P. capillacea and P. deflexa (Rubiaceae) extracts were investigated, and the concentrations of total phenolics, flavonoids, condensed tannins and flavonols were determined. The chemical compositions of the extracts were investigated using the high performance liquid chromatography (HPLC/PAD) method. We used 1,1-diphenyl-1-picrylhydrazyl free radical (DPPH), β-Carotene bleaching and 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical cations to determine antioxidant activity. The ability to scavenge radical was measured in these experiments by the discoloration of the solution. Concentrations of constituents were measured spectrophotometrically. P. carthagenensis and P. capillacea exhibited the highest antioxidant activity, in the DPPH test, β-carotene bleaching and ABTS system. The highest phenolic, flavonoid, condensed tannin and flavonol concentration was found in P. carthagenensis and P. capillacea extracts. HPLC-PDA analysis of P. carthagenensis and P. capillacea revealed hydroxycinnamic acid (p-coumaric acid). This is the first report on the antioxidant properties and constituent analysis of these Psychotria extracts.
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Affiliation(s)
| | | | - Matheus Santiago
- Biological and Environmental Sciences, University Federal of Grande Dourados (UFGD), 79804-970/533 Dourados-MS, Brazil.
| | - Claudia Andrea Lima Cardoso
- Chemistry Program, State University of Mato Grosso do Sul (UEMS), Mato Grosso do Sul, 79804-970/351 Dourados-MS, Brazil.
| | - Maria do Carmo Vieira
- Faculty of Agricultural Sciences, University Federal of Grande Dourados (UFGD), 79804-970/533 Dourados-MS, Brazil.
| | - Zefa Valdevina Pereira
- Biological and Environmental Sciences, University Federal of Grande Dourados (UFGD), 79804-970/533 Dourados-MS, Brazil.
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22
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Grúz J, Pospíšil J, Kozubíková H, Pospíšil T, Doležal K, Bunzel M, Strnad M. Determination of free diferulic, disinapic and dicoumaric acids in plants and foods. Food Chem 2014; 171:280-6. [PMID: 25308670 DOI: 10.1016/j.foodchem.2014.08.131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/25/2014] [Accepted: 08/30/2014] [Indexed: 11/17/2022]
Abstract
Hydroxycinnamates are common phenolic compounds of plants and plant foods, often found in substantial quantities. Due to their high in vitro antioxidant activity they can easily be oxidized under oxidative conditions. In this study, we found that in vitro oxidation of coumaric, ferulic and sinapic acids resulted mainly in dimeric compounds. We hypothesized that these dimers are present in plants and plant foods not only in their bound form but also as free acids that can be extracted from non-hydrolyzed samples. By applying sensitive UHPLC-MS/MS method, we were able to identify and quantify four free hydroxycinnamic acid dimers for the first time, namely 8-8'-disinapic, 8-5'-diferulic, 8-O-4'-diferulic and 8-3'-dicoumaric acids, in wheat sprouts, Chinese cabbage, millet sprouts, light beer and parsley. Concentrations of dicinnamates in plant tissues ranged from 0.05 to 2.8 μg g(-1) DW and the monomer:dimer ratio ranged from 2 to 850.
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Affiliation(s)
- Jiří Grúz
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic.
| | - Jiří Pospíšil
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Hana Kozubíková
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Tomáš Pospíšil
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Karel Doležal
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Mirko Bunzel
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT), Adenauerring 20A, 76131 Karlsruhe, Germany
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
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23
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Extraction of p-Coumaric Acid and Ferulic Acid Using Surfactant-Based Aqueous Two-Phase System. Appl Biochem Biotechnol 2014; 174:564-73. [DOI: 10.1007/s12010-014-1107-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 07/22/2014] [Indexed: 10/25/2022]
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24
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Zhang L, Gao W, Chen X, Wang H. The Effect of Bioprocessing on the Phenolic Acid Composition and Antioxidant Activity of Wheat Bran. Cereal Chem 2014. [DOI: 10.1094/cchem-03-13-0056-r] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Lixia Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Weijin Road, Tianjin 300072, China
- School of Chemical Engineering and Technology, Tianjin University, Weijin Road, Tianjin 300072, China
| | - Wenyuan Gao
- School of Pharmaceutical Science and Technology, Tianjin University, Weijin Road, Tianjin 300072, China
- Corresponding author. Phone: +86 2287401895. E-mail:
| | - Xuetao Chen
- School of Pharmaceutical Science and Technology, Tianjin University, Weijin Road, Tianjin 300072, China
| | - Haiyang Wang
- School of Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
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25
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Yan SL, Su YF, Chen L, Que M, Gao XM, Chang JB. Polygonumosides A-D, stilbene derivatives from processed roots of Polygonum multiflorum. JOURNAL OF NATURAL PRODUCTS 2014; 77:397-401. [PMID: 24499304 DOI: 10.1021/np400720y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Four new stilbene derivatives, polygonumosides A-D (1-4), were isolated from the processed roots of Polygonum multiflorum. Their structures were elucidated by spectroscopic analysis, including 1D and 2D NMR and ECD. Polygonumosides A (1) and B (2), possessing an unprecedented tetracyclic skeleton, were assigned as 2S- and 2R-2-(4-hydroxyphenyl)-9,10,11-trihydroxy-2H-benzo[c]furo[2,3-f]chromen-7(3H)-one-4-O-β-d-glucopyranosides, respectively, while polygonumosides C (3) and D (4) were assigned as a pair of diastereomeric stilbene glucoside dimers.
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Affiliation(s)
- Shi-Lun Yan
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science & Technology, Tianjin University , Tianjin 300072, People's Republic of China
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26
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Salgado JM, Rodríguez-Solana R, Curiel JA, de Las Rivas B, Muñoz R, Domínguez JM. Bioproduction of 4-vinylphenol from corn cob alkaline hydrolyzate in two-phase extractive fermentation using free or immobilized recombinant E. coli expressing pad gene. Enzyme Microb Technol 2014; 58-59:22-8. [PMID: 24731821 DOI: 10.1016/j.enzmictec.2014.02.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/06/2014] [Accepted: 02/09/2014] [Indexed: 10/25/2022]
Abstract
In situ extractive fermentation was used to produce 4-vinyl derivatives from hydroxycinnamic acids extracted from corn cobs by recombinant Escherichia coli cells expressing Lactobacillus plantarum phenolic acid descarboxylase (PAD) gene. This microorganism mainly produced 4-vinylphenol (4VP) from p-coumaric acid (p-CA). In the first study , we observed that the concentrations of 4VP are higher than 1g/L which had a negative impact on decarboxylation of p-CA to 4VP by recombinant E. coli cells. Because of this, and in order to improve the downstream process, a two-phase aqueous-organic solvent system was developed. The results of the extractive fermentation indicated that it was possible to use hydrolyzates as aqueous phase to bioproduce 4VP, and recover simultaneously the product in the organic phase containing hexane. The detoxification of pre-treated corn cob alkaline hydrolyzate improved 4VP production up to 1003.5mg/L after 24h fermentation (QP=41.813mg/Lh). Additionally, preliminary experiments using cells immobilized in calcium alginate showed to be a good system for the biotransform of p-CA to 4VP in extractive fermentation, although the process hindered partially the recovery of 4VP in the organic phase.
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Affiliation(s)
- José Manuel Salgado
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Raquel Rodríguez-Solana
- Laboratory of Agro-food Biotechnology, CITI-Tecnólopole, Parque Tecnológico de Galicia, San Cibrao das Viñas, Ourense, Spain; Department of Chemical Engineering, Sciences Faculty, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain
| | - José Antonio Curiel
- Laboratorio y Tecnología de Alimentos y Nutrición, ICTAN-CSIC, Juan de la Cierva 3, 28006 Madrid, de Biotecnología Bacteriana, Instituto de Ciencia, Spain
| | - Blanca de Las Rivas
- Laboratorio y Tecnología de Alimentos y Nutrición, ICTAN-CSIC, Juan de la Cierva 3, 28006 Madrid, de Biotecnología Bacteriana, Instituto de Ciencia, Spain
| | - Rosario Muñoz
- Laboratorio y Tecnología de Alimentos y Nutrición, ICTAN-CSIC, Juan de la Cierva 3, 28006 Madrid, de Biotecnología Bacteriana, Instituto de Ciencia, Spain
| | - José Manuel Domínguez
- Laboratory of Agro-food Biotechnology, CITI-Tecnólopole, Parque Tecnológico de Galicia, San Cibrao das Viñas, Ourense, Spain; Department of Chemical Engineering, Sciences Faculty, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain
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27
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Kiliç I, Yeşiloğlu Y. Spectroscopic studies on the antioxidant activity of p-coumaric acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:719-724. [PMID: 23892112 DOI: 10.1016/j.saa.2013.06.110] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/26/2013] [Accepted: 06/28/2013] [Indexed: 06/02/2023]
Abstract
p-coumaric acid (4-hydroxycinnamic acid), a phenolic acid, is a hydroxyl derivative of cinnamic acid. It decreases low density lipoprotein (LDL) peroxidation and reduces the risk of stomach cancer. In vitro radical scavenging and antioxidant capacity of p-coumaric acid were clarified using different analytical methodologies such as total antioxidant activity determination by ferric thiocyanate, hydrogen peroxide scavenging, 1,1-diphenyl-2-picryl-hydrazyl free radical (DPPH) scavenging, 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radical scavenging activity and superoxide anion radical scavenging, ferrous ions (Fe(2+)) chelating activity and ferric ions (Fe(3+)) reducing ability. p-Coumaric acid inhibited 71.2% lipid peroxidation of a linoleic acid emulsion at 45μg/mL concentration. On the other hand, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), α-tocopherol and ascorbic acid displayed 66.8%, 69.8%, 64.5% and 59.7% inhibition on the peroxidation of linoleic acid emulsion at the same concentration, respectively. In addition, p-coumaric acid had an effective DPPH scavenging, ABTS(+) scavenging, superoxide anion radical scavenging, hydrogen peroxide scavenging, ferric ions (Fe(3+)) reducing power and ferrous ions (Fe(2+)) chelating activities. Also, those various antioxidant activities were compared to BHA, BHT, α-tocopherol and ascorbic acid as references antioxidant compounds. These results suggested that p-coumaric acid can be used in the pharmacological and food industry because of these properties.
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Affiliation(s)
- Ismail Kiliç
- Trakya University, Faculty of Education, Edirne, Turkey.
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28
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Bel-Rhlid R, Thapa D, Kraehenbuehl K, Hansen CE, Fischer L. Biotransformation of caffeoyl quinic acids from green coffee extracts by Lactobacillus johnsonii NCC 533. AMB Express 2013; 3:28. [PMID: 23692950 PMCID: PMC3679781 DOI: 10.1186/2191-0855-3-28] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 05/10/2013] [Indexed: 11/10/2022] Open
Abstract
The potential of Lactobacillus johnsonii NCC 533 to metabolize chlorogenic acids from green coffee extract was investigated. Two enzymes, an esterase and a hydroxycinnamate decarboxylase (HCD), were involved in this biotransformation. The complete hydrolysis of 5-caffeoylquinic acid (5-CQA) into caffeic acid (CA) by L. johnsonii esterase occurred during the first 16 h of reaction time. No dihydrocaffeic acid was identified in the reaction mixture. The decarboxylation of CA into 4-vinylcatechol (4-VC) started only when the maximum concentration of CA was reached (10 μmol/ml). CA was completely transformed into 4-VC after 48 h of incubation. No 4-vinylphenol or other derivatives could be identified in the reaction media. In this study we demonstrate the capability of L. johnsonii to transform chlorogenic acids from green coffee extract into 4-VC in two steps one pot reaction. Thus, the enzymatic potential of certain lactobacilli might be explored to generate flavor compounds from plant polyphenols.
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Affiliation(s)
- Rachid Bel-Rhlid
- Nestec Ltd, Nestlé Research Centre, Vers-chez-les-Blanc, P.O. Box 44, Lausanne 26, 1000, Switzerland
| | - Dinesh Thapa
- Rowett Institute of Nutrition and Health Gut, Health/Microbial Biochemistry, University of Aberdeen, Greenburn Road, Bucksburn, Aberdeen, AB21 9SB, Scotland
| | - Karin Kraehenbuehl
- Nestec Ltd, Nestlé Research Centre, Vers-chez-les-Blanc, P.O. Box 44, Lausanne 26, 1000, Switzerland
| | - Carl Erik Hansen
- Nestec Ltd, Nestlé Research Centre, Vers-chez-les-Blanc, P.O. Box 44, Lausanne 26, 1000, Switzerland
| | - Lutz Fischer
- Institute of Food Science and Biotechnology, Faculty of Natural Sciences, University of Hohenheim (Stuttgart), Garbenstr. 25, Stuttgart, D-70593, Germany
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29
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Wang RF, Yuan M, Yang XB, Xu W, Yang XW. Intestinal bacterial transformation - a nonnegligible part of Chinese medicine research. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2013; 15:532-549. [PMID: 23614368 DOI: 10.1080/10286020.2013.783573] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Intestinal bacteria play an essential part in the metabolism of the constituents of herbal drugs, and a lot of investigations have been done to unveil their functions and mechanisms in modification of these constituents and their effect. This review provides a progressive description of intestinal bacterial transformation with respect to properties, reactions, correlation with the effect of herbal drugs, research interests, and methodology. In addition, the problems encountered during the investigation are addressed and perspectives are proposed.
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Affiliation(s)
- Ru-Feng Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
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30
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Antioxidant activity and polyphenol content of cherry stem (Cerasus avium L.) determined by LC–MS/MS. Food Res Int 2013. [DOI: 10.1016/j.foodres.2012.11.022] [Citation(s) in RCA: 155] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Torres-Mancera MT, Baqueiro-Peña I, Figueroa-Montero A, Rodríguez-Serrano G, González-Zamora E, Favela-Torres E, Saucedo-Castañeda G. Biotransformation and improved enzymatic extraction of chlorogenic acid from coffee pulp by filamentous fungi. Biotechnol Prog 2013; 29:337-45. [DOI: 10.1002/btpr.1696] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 01/04/2013] [Indexed: 11/09/2022]
Affiliation(s)
- María Teresa Torres-Mancera
- Dept. of Biotechnology; Metropolitan Autonomous University, Iztapalapa Campus.; Av. San Rafael Atlixco 186, Col. Vicentina, CP 09340, DF Mexico
| | - Itzamná Baqueiro-Peña
- Dept. of Chemistry Engineering, Food and Environment; University of Americas Cholula; Puebla 72820, DF Mexico
| | - Arturo Figueroa-Montero
- Dept. of Biotechnology; Metropolitan Autonomous University, Iztapalapa Campus.; Av. San Rafael Atlixco 186, Col. Vicentina, CP 09340, DF Mexico
| | - Gabriela Rodríguez-Serrano
- Dept. of Biotechnology; Metropolitan Autonomous University, Iztapalapa Campus.; Av. San Rafael Atlixco 186, Col. Vicentina, CP 09340, DF Mexico
| | - Eduardo González-Zamora
- Dept. of Chemistry; Metropolitan Autonomous University, Iztapalapa Campus; Av. San Rafael Atlixco 186 Col. Vicentina, CP 09340, DF Mexico
| | - Ernesto Favela-Torres
- Dept. of Biotechnology; Metropolitan Autonomous University, Iztapalapa Campus.; Av. San Rafael Atlixco 186, Col. Vicentina, CP 09340, DF Mexico
| | - Gerardo Saucedo-Castañeda
- Dept. of Biotechnology; Metropolitan Autonomous University, Iztapalapa Campus.; Av. San Rafael Atlixco 186, Col. Vicentina, CP 09340, DF Mexico
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Enzymatic transformation of tyrosol by Trametes trogii laccases: Identification of the product and study of its biological activities. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2012.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Chakroun H, Bouaziz M, Dhouib A, Sayadi S. Enzymatic oxidative transformation of phenols by Trametes trogii laccases. ENVIRONMENTAL TECHNOLOGY 2012; 33:1977-1985. [PMID: 23240190 DOI: 10.1080/09593330.2012.655317] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The removal of toxic phenolic compounds from industrial wastewater is an important issue to be addressed. Their presence in water and soil has become a great environmental concern, and effective methods for their removal need to be addressed. The feasibility of applying laccases for the degradation of phenolic compounds has received increasing attention. In the present work, the transformation of five phenolic compounds (catechol, hydroxytyrosol, tyrosol, guaiacol and p-coumaric acid), the main constituents of a typical wastewater derived from an olive oil factory, by Trametes trogii laccases was studied at concentrations ranging between 0.2 and 1.6 mM. High-performance liquid chromatography analysis showed high degradation rates of phenolic compounds by T trogii laccases. Independently of the used concentration, a complete transformation of guaiacol, p-coumaric acid, hydroxytyrosol and tyrosol occurred after 1 h of incubation. The transformation of catechol depends on its initial concentration. The liquid chromatography-mass spectrometry analysis showed that laccases catalysed transformation of p-coumaric acid and tyrosol, resulting in the formation of phenolic dimers. No reduction of enzyme activity has been observed during the oxidation of all phenolic compounds. These results suggest that the studied laccases were capable of efficiently removing phenolic compounds, as well as catalysing the production of novel phenolic dimers.
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Affiliation(s)
- Hanen Chakroun
- Laboratoire des Bioprocédés Environnementaux, Pôle d'Excellence Régional A UF-LBPE, Université de Sfax, Tunisia
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Li N, Liu C, Mi S, Wang N, Zheng X, Li Y, Huang X, He S, Chen H, Xu X. Simultaneous Determination of Oleanolic Acid, p-Coumaric Acid, Ferulic Acid, Kaemperol and Quercetin in Rat Plasma by LC–MS-MS and Application to a Pharmacokinetic Study of Oldenlandia diffusa Extract in Rats. J Chromatogr Sci 2012; 50:885-92. [DOI: 10.1093/chromsci/bms086] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lou Z, Wang H, Rao S, Sun J, Ma C, Li J. p-Coumaric acid kills bacteria through dual damage mechanisms. Food Control 2012. [DOI: 10.1016/j.foodcont.2011.11.022] [Citation(s) in RCA: 189] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Clayton TA. Metabolic differences underlying two distinct rat urinary phenotypes, a suggested role for gut microbial metabolism of phenylalanine and a possible connection to autism. FEBS Lett 2012; 586:956-61. [DOI: 10.1016/j.febslet.2012.01.049] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 01/08/2012] [Accepted: 01/23/2012] [Indexed: 11/25/2022]
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Moussouni S, Saru ML, Ioannou E, Mansour M, Detsi A, Roussis V, Kefalas P. Crude peroxidase from onion solid waste as a tool for organic synthesis. Part II: oxidative dimerization–cyclization of methyl p-coumarate, methyl caffeate and methyl ferulate. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cloning, sequencing, and overexpression in Escherichia coli of the Enterobacter sp. Px6-4 gene for ferulic acid decarboxylase. Appl Microbiol Biotechnol 2010; 89:1797-805. [PMID: 21085952 DOI: 10.1007/s00253-010-2978-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 10/17/2010] [Accepted: 10/18/2010] [Indexed: 10/18/2022]
Abstract
Ferulic acid decarboxylase (FADase) can catalyze the transformation of ferulic acid into 4-vinyl guaiacol via decarboxylation in microorganisms. In this study, a gene encoding FADase was first isolated from the bacterium Enterobacter sp. Px6-4 using degenerate primers and a genome walking technique. The putative encoding gene (fad) of FADase consists of 507-bp nucleotides, coding a polypeptide of 168 amino acid residues. In addition, a putative gene encoding the transcriptional regulator was identified from the upstream of the fad gene. The deduced peptide sequence of the FADase from Enterobacter sp. Px6-4 showed a 51.2-53.3% sequence identity to decarboxylases from other bacteria. The gene fad was successfully expressed in Escherichia coli BL21, and the recombinant FADase was purified as a protein of ca. 23 kDa with an optimal activity at pH 4.0 and 28 °C. The purified FADase could convert ferulic acid to 4-vinyl guaiacol effectively, and its hydrolytic activity could be inhibited by Cu(2+) (99%) and Hg(2+) (99.5%). A phylogenetic analysis of the FADase protein from bacteria revealed several different clades. Our result provided a basis for further studies of the ferulic acid transformation pathway and for enhanced production of vanillin in the future.
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Max B, Salgado JM, Cortés S, Domínguez JM. Extraction of phenolic acids by alkaline hydrolysis from the solid residue obtained after prehydrolysis of trimming vine shoots. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:1909-1917. [PMID: 20000463 DOI: 10.1021/jf903441d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Contents of hydroxycinnamic and hydroxybenzoic acids were determined in trimming vine shoots after sequential treatments of prehydrolysis and alkaline hydrolysis. These treatments allow the complete use of the main fractions involved: cellulose, hemicelluloses and lignin. The alkaline hydrolysis was studied using a factorial design where reaction time (in the range 30-120 min), temperature (50-130 degrees C), and NaOH concentration (4-12 wt % of solution) were the independent variables. The interrelationship between dependent and operational variables was well fitted (R(2) > 0.90) to models including linear, interaction and quadratic terms. Ferulic acid was the most abundant hydroxycinnamate with concentrations ranging from 25.7 to 141.0 mg/L followed by p-coumaric acid (15.5-31.5 mg/L). Gallic acid was the hydroxybenzoic acid released in higher concentration (in the range 2.5-164.6 mg/L). Because of their properties and low toxicity, these compounds are widely used in the food, pharmaceutical and cosmetic industries. Additionally, ferulic acid is used as feedstock for the biotechnological production of flavorings and aroma compounds, including vanillin and vinylguaiacol, or as a constituent in the preparation of foods and skin protection agents, or as a cross-linking agent for the elaboration of food gels. Consequently, ferulic acid solutions can be obtained from renewable plant cell wall materials as a prospective pathway.
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Affiliation(s)
- Belén Max
- Department of Chemical Engineering, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain
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Bhardwaj A, Kumar Tewary D, Kumar R, Kumar V, Kumar Sinha A, Shanker A. Larvicidal and Structure-Activity Studies of Natural Phenylpropanoids and Their Semisynthetic Derivatives against the Tobacco ArmywormSpodoptera litura(Fab.) (Lepidoptera: Noctuidae). Chem Biodivers 2010; 7:168-77. [DOI: 10.1002/cbdv.200800345] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Max B, Torrado AM, Moldes AB, Converti A, Domínguez JM. Ferulic acid and p-coumaric acid solubilization by alkaline hydrolysis of the solid residue obtained after acid prehydrolysis of vine shoot prunings: Effect of the hydroxide and pH. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2008.09.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Shary S, Ralph SA, Hammel KE. New insights into the ligninolytic capability of a wood decay ascomycete. Appl Environ Microbiol 2007; 73:6691-4. [PMID: 17766457 PMCID: PMC2075050 DOI: 10.1128/aem.01361-07] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Wood-grown cultures of Daldinia concentrica oxidized a permethylated beta-(14)C-labeled synthetic lignin to (14)CO(2) and also cleaved a permethylated alpha-(13)C-labeled synthetic lignin to give C(alpha)-C(beta) cleavage products that were detected by (13)C nuclear magnetic resonance spectrometry. Therefore, this ascomycete resembles white-rot basidiomycetes in attacking the recalcitrant nonphenolic structures that predominate in lignin.
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Affiliation(s)
- Semarjit Shary
- Institute for Microbial and Biochemical Sciences, USDA Forest Products Laboratory, One Gifford Pinchot Dr., Madison, WI 53726, USA
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Hua D, Ma C, Lin S, Song L, Deng Z, Maomy Z, Zhang Z, Yu B, Xu P. Biotransformation of isoeugenol to vanillin by a newly isolated Bacillus pumilus strain: Identification of major metabolites. J Biotechnol 2007; 130:463-70. [PMID: 17583367 DOI: 10.1016/j.jbiotec.2007.05.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2006] [Revised: 04/23/2007] [Accepted: 05/04/2007] [Indexed: 11/16/2022]
Abstract
A bacterial strain S-1 capable of transforming isoeugenol to vanillin was isolated. The strain was identified as Bacillus pumilus based on biochemical tests, cellular fatty acid composition, riboprint pattern and 16S rRNA gene sequence analyses. In the biotransformation of isoeugenol, vanillin was the main product. With the growing culture of B. pumilus S-1, 10g l(-1) isoeugenol was converted to 3.75g l(-1) vanillin in 150 h, with a molar yield of 40.5% that is the highest up to now. Dehydrodiisoeugenol, a dimer of isoeugenol, was separated by preparative thin layer chromatography and identified by gas chromatography-mass spectrometry. Based on the accurate masses obtained from gas chromatography-high resolution mass spectrometry, two key intermediates, isoeugenol-epoxide (IE) and isoeugenol-diol (ID), were identified by mass spectra interpretations. The biotransformation with resting cells showed that vanillin was oxidized to vanillic acid and then to protocatechuic acid before the aromatic ring was broken. These findings suggest that isoeugenol is degraded through an epoxide-diol pathway.
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Affiliation(s)
- Dongliang Hua
- Key Laboratory of Microbial Metabolism, Ministry of Education, College of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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Liu HL, Huang XF, Wan X, Kong LY. Biotransformation ofp-Coumaric Acid (=(2E)-3-(4-Hydroxyphenyl)prop-2-enoic Acid) byMomordica charantia Peroxidase. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790111] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lee HC, Jenner AM, Low CS, Lee YK. Effect of tea phenolics and their aromatic fecal bacterial metabolites on intestinal microbiota. Res Microbiol 2006; 157:876-84. [PMID: 16962743 DOI: 10.1016/j.resmic.2006.07.004] [Citation(s) in RCA: 472] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2006] [Revised: 06/06/2006] [Accepted: 07/18/2006] [Indexed: 12/20/2022]
Abstract
Tea is rich in polyphenols and other phenolics that have been widely reported to have beneficial health effects. However, dietary polyphenols are not completely absorbed from the gastrointestinal tract and are metabolized by the gut microflora so that they and their metabolites may accumulate to exert physiological effects. In this study, we investigated the influence of the phenolic components of a tea extract and their aromatic metabolites upon bacterial growth. Fecal homogenates containing bacteria significantly catalyzed tea phenolics, including epicatechin, catechin, 3-O-methyl gallic acid, gallic acid and caffeic acid to generate aromatic metabolites dependent on bacterial species. Different strains of intestinal bacteria had varying degrees of growth sensitivity to tea phenolics and metabolites. Growth of certain pathogenic bacteria such as Clostridium perfringens, Clostridium difficile and Bacteroides spp. was significantly repressed by tea phenolics and their derivatives, while commensal anaerobes like Clostridium spp., Bifidobacterium spp. and probiotics such as Lactobacillus sp. were less severely affected. This indicates that tea phenolics exert significant effects on the intestinal environment by modulation of the intestinal bacterial population, probably by acting as metabolic prebiotics. Our observations provide further evidence for the importance of colonic bacteria in the metabolism, absorption and potential activity of phenolics in human health and disease. The bioactivity of different phenolics may play an important role in the maintenance of gastrointestinal health.
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Affiliation(s)
- Hui Cheng Lee
- Department of Microbiology, National University of Singapore, 5 Science Drive 2, Singapore 117597, Republic of Singapore
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Abstract
AIMS To investigate the biotransformation of p-coumaric acid into p-hydroxybenzoic acid (p-HBA) by Paecilomyces variotii Bainier MTCC 6581. METHODS AND RESULTS As a result of p-coumaric acid degradation by P. variotii, three phenolic metabolites, p-hydroxybenzaldehyde (p-HBAld), p-HBA and protocatechuic acid were formed. These phenolics were detected using TLC and HPLC. The identity of p-HBA and p-HBAld was further confirmed by mass spectrometry. Various analyses showed that 10.0 mmol l(-1) concentration of p-coumaric acid produced a maximum amount of p-hydroxybenzoic acid, 200 mg l(-1), into the medium at 37 degrees C with high-density cultures. CONCLUSIONS A catabolic pathway of p-coumaric acid by the fungus P. variotii is suggested for the first time. During the process of p-coumaric acid degradation, p-HBA accumulated in the medium as the major degradation product. SIGNIFICANCE AND IMPACT OF THE STUDY Microbial degradation of cinnamic acid and hydroxycinnamic acid has continued to be the focus of intensive study. The main goal was to identify the microbial species capable of converting these substances into commercially value-added products such as benzoic acid derivatives or aromatic aldehydes.
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Affiliation(s)
- A Sachan
- Natural Product Biotechnology Group, Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India
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von Reuss SH, König WA. Corsifurans A-C, 2-arylbenzofurans of presumed stilbenoid origin from Corsinia coriandrina (Hepaticae). PHYTOCHEMISTRY 2004; 65:3113-3118. [PMID: 15541739 DOI: 10.1016/j.phytochem.2004.10.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2004] [Revised: 10/01/2004] [Indexed: 05/24/2023]
Abstract
Chemical investigation of the diethyl ether extract from the liverwort Corsinia coriandrina resulted in the isolation of a new 2-arylbenzofuran compound called corsifuran A. The structure was identified by spectroscopic techniques and confirmed by synthesis. Two minor constituents of similar structure, and two related stilbenoids and a bibenzyl were identified by comparison of the mass spectra and GC retention indices with authentic samples. Due to the similarity in substitution patterns a stilbenoid origin of the corsifurans is proposed.
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Affiliation(s)
- Stephan H von Reuss
- Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz 6, D-20146 Hamburg, Germany.
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Manini P, Buzio L, Andreoli R, Goldoni M, Bergamaschi E, Jakubowski M, Vodicka P, Hirvonen A, Mutti A. Assessment of biotransformation of the arene moiety of styrene in volunteers and occupationally exposed workers. Toxicol Appl Pharmacol 2003; 189:160-9. [PMID: 12791301 DOI: 10.1016/s0041-008x(03)00124-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Styrene is a chemical widely used in the plastic industry. The main pathway of styrene metabolism in humans occurs via the oxidation to styrene-7,8-oxide (7,8-SO). The aim of this study was the investigation of a minor metabolic route, involving the oxidation of the arene moiety of styrene, by means of the characterization of the conjugated urinary metabolites of 4-vinylphenol (4-VP). 4-vinylphenol-glucuronide (4-VP-G) and -sulfate (4-VP-S), were measured by liquid chromatography electrospray tandem mass spectrometry (LC-ESI-MS/MS) from 174 workers belonging to three cohorts recruited in European countries and from 26 volunteers exposed to 50 mg/m(3) (11.8 ppm) of styrene for 8 h. The 4-VP conjugates represented about 0.5-1% of the total excretion of styrene metabolites. Both 4-VP-G and 4-VP-S are eliminated with a monophasic kinetic, the glucuronide being excreted faster (half-time, 2.2 +/- 0.2 h) than the sulfate (half-time 9.7 +/- 1.7 h). The urinary 4-VP was found to be significantly correlated both with airborne styrene (r = 0.607, p < 0.001) and the sum of MA and PGA (r = 0.903, p < 0.001 in "end-of-shift" samples). Apart from 7,8-SO, 4-VP is the only styrene metabolite not shared with ethylbenzene and therefore thought to be a highly specific marker of styrene exposure. However, a measurable background excretion of 4-VP was also found in all urine samples from controls not occupationally exposed to styrene. This background appears to be highly correlated to smoking (p < 0.001) and possibly also to the dietary intake of styrene or 4-VP. Consequently, the use of 4-VP as a biomarker of styrene exposure is recommended for exposures exceeding 1 ppm.
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Affiliation(s)
- Paola Manini
- ISPESL Research Center at the University of Parma, Italy.
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Peng X, Misawa N, Harayama S. Isolation and characterization of thermophilic bacilli degrading cinnamic, 4-coumaric, and ferulic acids. Appl Environ Microbiol 2003; 69:1417-27. [PMID: 12620824 PMCID: PMC150090 DOI: 10.1128/aem.69.3.1417-1427.2003] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Thirty-four thermophilic Bacillus sp. strains were isolated from decayed wood bark and a hot spring water sample based on their ability to degrade vanillic acid under thermophilic conditions. It was found that these bacteria were able to degrade a wide range of aromatic acids such as cinnamic, 4-coumaric, 3-phenylpropionic, 3-(p-hydroxyphenyl)propionic, ferulic, benzoic, and 4-hydroxybenzoic acids. The metabolic pathways for the degradation of these aromatic acids at 60 degrees C were examined by using one of the isolates, strain B1. Benzoic and 4-hydroxybenzoic acids were detected as breakdown products from cinnamic and 4-coumaric acids, respectively. The beta-oxidative mechanism was proposed to be responsible for these conversions. The degradation of benzoic and 4-hydroxybenzoic acids was determined to proceed through catechol and gentisic acid, respectively, for their ring fission. It is likely that a non-beta-oxidative mechanism is the case in the ferulic acid catabolism, which involved 4-hydroxy-3-methoxyphenyl-beta-hydroxypropionic acid, vanillin, and vanillic acid as the intermediates. Other strains examined, which are V0, D1, E1, G2, ZI3, and H4, were found to have the same pathways as those of strain B1, except that strains V0, D1, and H4 had the ability to transform 3-hydroxybenzoic acid to gentisic acid, which strain B1 could not do.
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Affiliation(s)
- Xue Peng
- Marine Biotechnology Institute, 3-75-1 Heita, Kamaishi City, Iwate 026-0001, Japan.
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50
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Abstract
The manuscript includes a concise description of a new, fast and simple method for detection of cinnamic acid decarboxylase activity. The method is based on a color shift caused a by pH change and may be an excellent procedure for large screenings of samples from natural sources, as it involves no complex sample processing or purification. The method developed can be used in preliminary approaches to biotransformation processes involving detection of hydroxycinnamic acid decarboxylase activity.
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Affiliation(s)
- Núria Prim
- Department of Microbiology, Faculty of Biology, University of Barcelona, Avenue Diagonal 645, 08028 Barcelona, Spain
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