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Silva S, Oliveira AI, Cruz A, Oliveira RF, Almeida R, Pinho C. Physicochemical Properties and Antioxidant Activity of Portuguese Craft Beers and Raw Materials. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27228007. [PMID: 36432109 PMCID: PMC9699228 DOI: 10.3390/molecules27228007] [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: 10/13/2022] [Revised: 11/03/2022] [Accepted: 11/11/2022] [Indexed: 11/19/2022]
Abstract
There is an increase in the popularity of craft beer, which is produced by small, independent, and traditional breweries. Since craft beer popularity is rising in Portugal this research focused on assessing physicochemical parameters, total phenolic content (TPC) and the antioxidant capacity of Portuguese craft beers and raw materials used in beer production. In this experimental study, 19 beer samples were analyzed. Parameters such as pH, Total Acidity, Reducing Sugar Content and TPC were evaluated. For the determination of antioxidant activity, DPPH scavenging activity and metal chelating activity (MCA) were analyzed in all samples. Craft beers demonstrated a high phenolic content (ranging from 343.78 mg GAE/L to 2172.49 mg GAE/L), significantly different from industrial beers. Craft beers demonstrated a higher inhibition of DPPH radicals and higher MCA than the raw materials. DPPH inhibition ranged from 36.5% to 96.0% for malt and 64.7% to 79.6% in hops samples. MCA also varied between the different samples, with results of 12.0% to 24.8% in malt samples and 3.8% to 23.5% in hops. Raw materials can potentially influence the antioxidant activity of the resulting beer. Positive correlations between TPC and physicochemical properties can be useful to help consumers choose beers with added value for health.
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Affiliation(s)
- Sara Silva
- Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
| | - Ana Isabel Oliveira
- Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
- Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
| | - Agostinho Cruz
- Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
- Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
| | - Rita Ferraz Oliveira
- Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
- Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
| | - Rubim Almeida
- CIBIO, Research Center in Biodiversity and Genetic Resources, InBIO-Associate Laboratory, University of Porto, 4485-661 Vairão, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- PO Herbarium, MHNC-UP—Museum of Natural History and Science of the University of Porto, 4099-002 Porto, Portugal
| | - Cláudia Pinho
- Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
- Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde (ESS), Instituto Politécnico do Porto (IPP), 4200-072 Porto, Portugal
- Correspondence:
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Broz P, Rajdl D, Racek J, Trefil L, Stehlik P. Effect of Beer Consumption on Methylation and Redox Metabolism. Physiol Res 2022. [DOI: 10.33549/physiolres.934863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
To investigate the influence of beer consumption on levels of homocysteine (HCY), vitamin B6, B12, folic acid (FA), dimethylglycine (DMG), betaine (BET) and other selected markers. One hundred and sixteen male volunteers were enrolled in the study. A one-month period of alcohol abstinence was followed by a one month when participants drank 830 mL of alcoholic beer every day. After that phase, one month of alcohol abstinence followed. At the beginning and after every phase, blood samples were taken and analysed. Ninety-three participants completed the study. After the phase of alcohol consumption, uric acid (UA) (p<0.0001), antioxidative capacity (AOC) (p=0.02), superoxide dismutase (SOD) (0.025), glutathione reductase (GRH) (0.0001), total cholesterol (p<0.0001), HDL-cholesterol (p<0.0001), Apolipoprotein-AI (ApoAI) (p<0.0001), LDL-cholesterol (p<0.039) and Apolipoprotein B (ApoB) (p<0.009) increased, while vitamin B12 (p=0.0001) and fibrinogen (p<0.0001) decreased. Other tested parameters (DMG, BET, vitamin B6 and FA) did not show any significant changes. UA changes and changes in AOC were statistically significantly correlated (r=0.52, p<0.0001). HCY, DMG and BET levels did not show any statistically significant changes after beer consumption, whereas some markers of redox metabolism increased (UA, AOC, SOD and GRH). A statistically significant correlation denotes the dependence of UA and AOC changes in connection with beer consumption.
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Affiliation(s)
- P Broz
- Institute of Clinical Biochemistry and Hematology, Charles University and University Hospital in Pilsen, Alej Svobody 80, 304 60, Czech Republic. E-mail:
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Colston KJ, Basu P. Synthesis, Redox and Spectroscopic Properties of Pterin of Molybdenum Cofactors. Molecules 2022; 27:3324. [PMID: 35630801 PMCID: PMC9146068 DOI: 10.3390/molecules27103324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 12/10/2022] Open
Abstract
Pterins are bicyclic heterocycles that are found widely across Nature and are involved in a variety of biological functions. Notably, pterins are found at the core of molybdenum cofactor (Moco) containing enzymes in the molybdopterin (MPT) ligand that coordinates molybdenum and facilitates cofactor activity. Pterins are diverse and can be widely functionalized to tune their properties. Herein, the general methods of synthesis, redox and spectroscopic properties of pterin are discussed to provide more insight into pterin chemistry and their importance to biological systems.
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Affiliation(s)
| | - Partha Basu
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA;
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Yamabe S, Tsuchida N, Yamazaki S. How Is the Oxidation Related to the Tautomerization in Vitamin B9? J Phys Chem A 2021; 125:9346-9354. [PMID: 34663066 DOI: 10.1021/acs.jpca.1c06678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The relationship between the lactim-lactam tautomerization and the free-radical scavenging reaction in vitamin B9 [folic acid (FA)] was investigated by density functional theory calculations. 6-Methylpterin was also adopted for the detailed analyses of various reaction paths. For pterin, the transition state of the tautomerization with two water molecules (n = 2) was calculated to be of the lowest activation energy. The proton-transfer circuit of n = 2 is retained (not broken) even with the addition of outer water molecules, n = 2 + 2, 2 + 4, 2 + 8, and 2 + 14. At the oxidation of the system composed of 6-methylpterin + (H2O)2 + HO•, the radical character of HO• is directly transmitted to the pterin ring along with the C-O → H → O → H → O → H → OH proton transfer. The patterns of the electron transfer (pterin ring → OX•) and the concomitant proton transfer via the water dimer were commonly obtained for the oxidant (OX•) = HO•, Cl3C-O2•, N3•, or SO4-•. The hydrogen atom transfer mechanism was ruled out. Two conformations of the puckered form with the -C(═O)-OH···N intramolecular hydrogen bonds of FA were found to have the stability similar to that of the linear conformer. Both the tautomerization and the oxidation were calculated to occur competitively in the three conformers.
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Affiliation(s)
- Shinichi Yamabe
- Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Noriko Tsuchida
- Department of Liberal Arts, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Shoko Yamazaki
- Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
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Horn PA, Pedron NB, Junges LH, Rebelo AM, da Silva Filho HH, Zeni ALB. Antioxidant profile at the different stages of craft beers production: the role of phenolic compounds. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03637-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Martinez-Gomez A, Caballero I, Blanco CA. Phenols and Melanoidins as Natural Antioxidants in Beer. Structure, Reactivity and Antioxidant Activity. Biomolecules 2020; 10:E400. [PMID: 32143493 PMCID: PMC7175304 DOI: 10.3390/biom10030400] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/24/2020] [Accepted: 03/01/2020] [Indexed: 12/17/2022] Open
Abstract
Beer is one of the most consumed drinks around the world, containing a variety of compounds that offer both appreciated sensorial characteristics and health advantages. Important healthy compounds in beer are those with antioxidant properties that attenuate the content of free radicals produced as by-products in the human metabolism, exerting an appreciable effect against cancers or cardiovascular diseases. This work details a study of antioxidant compounds present in beer, focusing on the two main groups: phenols (including polyphenolic forms) and melanoidins, formed specifically during brewing as Maillard products. The fundaments of the most important methods to evaluate beer antioxidant activity, the main antioxidant compounds present in beer-especially those with healthy properties-and the new trends to increase beer antioxidant activity are also discussed.
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Affiliation(s)
| | | | - Carlos A. Blanco
- Dpto. Ingeniería Agrícola y Forestal (Area de Tecnología de los Alimentos), E.T.S. Ingenierías Agrarias, Universidad de Valladolid, 34004 Palencia, Spain; (A.M.-G.); (I.C.)
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Alonso-Andrés P, Martín M, Albasanz JL. Modulation of Adenosine Receptors and Antioxidative Effect of Beer Extracts in in Vitro Models. Nutrients 2019; 11:nu11061258. [PMID: 31163630 PMCID: PMC6628356 DOI: 10.3390/nu11061258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/24/2019] [Accepted: 05/31/2019] [Indexed: 12/14/2022] Open
Abstract
The fight against neurodegenerative diseases is promoting the searching of nutrients, preferably of wide consumption, with proven effects on health. Beer is widely consumed and has potential benefits on health. In this work, three different extracts from dark beer (DB), non-alcoholic beer (NAB), and lager beer (LB) were assayed at 30 min and 24 h in rat C6 glioma and human SH-SY5Y neuroblastoma cells in order to study their possible protective effects. Cell viability and adenosine A1, A2A, A2B, and A3 receptor gene expression and protein levels were measured in control cells and in cells challenged with hydrogen peroxide as an oxidant stressor. Among the three extracts analyzed, DB showed a greater protective effect against H2O2-induced oxidative stress and cell death. Moreover, a higher A1 receptor level was also induced by this extract. Interestingly, A1 receptor level was also increased by NAB and LB extracts, but to a lower extent, and the protective effect of these extracts against H2O2 was lower. This possible correlation between protection and A1 receptor level was observed at 24 h in both C6 and SH-SY5Y cells. In summary, different beer extracts modulate, to a different degree, adenosine receptors expression and protect both glioma and neuroblastoma cells from oxidative stress.
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Affiliation(s)
- Patricia Alonso-Andrés
- Department of Inorganic and Organic Chemistry and Biochemistry, Faculty of Chemical and Technological Sciences, School of Medicine of Ciudad Real, Regional Center of Biomedical Research (CRIB), University of Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain.
| | - Mairena Martín
- Department of Inorganic and Organic Chemistry and Biochemistry, Faculty of Chemical and Technological Sciences, School of Medicine of Ciudad Real, Regional Center of Biomedical Research (CRIB), University of Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain.
| | - José Luis Albasanz
- Department of Inorganic and Organic Chemistry and Biochemistry, Faculty of Chemical and Technological Sciences, School of Medicine of Ciudad Real, Regional Center of Biomedical Research (CRIB), University of Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain.
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Jiao Z, Wang X, Yin Y, Xia J, Mei Y. Preparation and evaluation of a chitosan-coated antioxidant liposome containing vitamin C and folic acid. J Microencapsul 2018; 35:272-280. [DOI: 10.1080/02652048.2018.1467509] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zhen Jiao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, China
- Center for Nanobiotechnology, Joint Research Institute of Southeast University and Monash University, Suzhou, China
| | - Xiudong Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, China
| | - Yuting Yin
- School of Chemistry and Chemical Engineering, Southeast University Chengxian College, Nanjing, China
| | - Jingxin Xia
- School of Chemistry and Chemical Engineering, Southeast University Chengxian College, Nanjing, China
| | - Yanan Mei
- School of Chemistry and Chemical Engineering, Southeast University Chengxian College, Nanjing, China
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