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Longo E, Merkytė V, Romanini E, Lambri M, Boselli E. Effects of grape variety and roasting on the proanthocyanidin oligomers distribution, cyclic proanthocyanidins, and total polyphenol content in grape seed powders. Food Res Int 2024; 176:113826. [PMID: 38163688 DOI: 10.1016/j.foodres.2023.113826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 11/29/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
Grape seeds are a valuable source of natural phenolic compounds, particularly flavan-3-ol derivatives such as condensed tannins. Recent studies have shown that grape seed powder can be applied to reduce the undesirable effects of protein instability in wine. One pretreatment method applied to grape seeds is roasting. Roasting causes the heavier proanthocyanidins (PAC) oligomers to break down, thereby increasing the concentration of smaller oligomers available for interaction with proteins. In addition, roasting can prolong grape seed storage. Among the subclasses of proanthocyanidins, oligomeric macrocyclic proanthocyanidins have also shown potential effects in terms of wine stabilization, particularly by presenting selective interactions with metal cations such as potassium and calcium. However, their composition in grape seed extracts has never been studied. Here, the characterization of condensed tannins according to the degree of polymerization in grape seeds, the profile of cyclic proanthocyanidins and the total polyphenol content were characterized in relation to different grape varieties and the application of roasting. Roasting greatly influenced the distribution of PAC according to the degree of polymerization, increasing the abundance of almost all classes of PAC. However, the overall effect of roasting was highly dependent on grape variety. PAC were analyzed according to the degree of polymerization. Grape seed roasting of red varieties (Croatina and Sangiovese) showed an increase in all classes of PAC except trimers. The white variety (Ortrugo) and the mix of Nebbiolo and Barbera varieties (80% and 20% w/w, respectively) showed no clear effect on the profile of PAC upon roasting. Notably, cyclic procyanidins were identified for the first time in grape seeds: a cyclic tetrameric procyanidin (ESI + m/z 1153) and cyclic pentameric procyanidin (ESI + m/z 1441) were found. The abundances of these cyclic PAC were found to be completely stable upon roasting, also in agreement with the already known stability of these compounds against depolymerizing conditions. Interestingly, the cyclic pentameric procyanidin was significantly more abundant in Ortrugo (white variety), than in Sangiovese and Croatina (red varieties). Besides, no effect of roasting occurred on the profile of cyclic procyanidins in grape seed powder. Finally, the total polyphenol content was evaluated, showing that roasting caused an increase of polyphenolic molecular species potentially available for protein stabilization, but only in GSP of red varieties. Overall, the grape variety was found to be a significant factor in determining how much the roasting would change the PAC profile, providing valuable information for future applications of GSP in enology.
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Affiliation(s)
- Edoardo Longo
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen/Bolzano, Piazza Università 5, 39100 Bolzano, Italy; Oenolab, NOI Techpark, via Alessandro Volta 13B, 39100 Bolzano, Italy
| | - Vakarė Merkytė
- Oenolab, NOI Techpark, via Alessandro Volta 13B, 39100 Bolzano, Italy
| | - Elia Romanini
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Milena Lambri
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, via Emilia Parmense 84, 29122 Piacenza, Italy.
| | - Emanuele Boselli
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen/Bolzano, Piazza Università 5, 39100 Bolzano, Italy; Oenolab, NOI Techpark, via Alessandro Volta 13B, 39100 Bolzano, Italy
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Galaz Torres C, Ricci A, Parpinello GP, Gambuti A, Rinaldi A, Moio L, Rolle L, Paissoni MA, Mattivi F, Perenzoni D, Arapitsas P, Marangon M, Mayr Marangon C, Slaghenaufi D, Ugliano M, Versari A. Multivariate prediction of Saliva Precipitation Index for relating selected chemical parameters of red wines to the sensory perception of astringency. Curr Res Food Sci 2023; 7:100626. [PMID: 38021261 PMCID: PMC10651451 DOI: 10.1016/j.crfs.2023.100626] [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: 09/04/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
Astringency is an essential sensory attribute of red wine closely related to the saliva precipitation upon contact with the wine. In this study a data matrix of 52 physico-chemical parameters was used to predict the Saliva Precipitation Index (SPI) in 110 Italian mono-varietal red wines using partial least squares regression (PLSr) with variable selection by Variable Importance for Projection (VIP) and the significance of regression coefficients. The final PLSr model, evaluated using a test data set, had 3 components and yielded an R2test of 0.630 and an RMSEtest of 0.994, with 19 independent variables whose regression coefficients were all significant at p < 0.05. Variables selected in the final model according to the decreasing magnitude of their absolute regression coefficient include the following: Procyanidin B1, Epicatechin terminal unit, Total aldehydes, Protein content, Vanillin assay, 520 nm, Polysaccharide content, Epigallocatechin PHL, Tartaric acid, Volatile acidity, Titratable acidity, Catechin terminal unit, Proanthocyanidin assay, pH, Tannin-Fe/Anthocyanin, Buffer capacity, Epigallocatechin PHL gallate, Catechin + epicatechin PHL, and Tannin-Fe. These results can be used to better understand the physico-chemical relationship underlying astringency in red wine.
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Affiliation(s)
| | - Arianna Ricci
- Department of Agricultural and Food Sciences, University of Bologna, Italy
| | | | - Angelita Gambuti
- Department of Agricultural Sciences, Division of Vine and Wine Sciences, University of Napoli Federico II, 83100, Avellino, Italy
| | - Alessandra Rinaldi
- Department of Agricultural Sciences, Division of Vine and Wine Sciences, University of Napoli Federico II, 83100, Avellino, Italy
| | - Luigi Moio
- Department of Agricultural Sciences, Division of Vine and Wine Sciences, University of Napoli Federico II, 83100, Avellino, Italy
| | - Luca Rolle
- Department of Agricultural, Forest and Food Sciences, University of Torino, 10095, Grugliasco, Italy
| | - Maria Alessandra Paissoni
- Department of Agricultural, Forest and Food Sciences, University of Torino, 10095, Grugliasco, Italy
| | - Fulvio Mattivi
- Metabolomic Unit, Research and Innovation Centre, Fondazione Edmund Mach, 38010, San Michele all’Adige, Italy
| | - Daniele Perenzoni
- Metabolomic Unit, Research and Innovation Centre, Fondazione Edmund Mach, 38010, San Michele all’Adige, Italy
| | - Panagiotis Arapitsas
- Metabolomic Unit, Research and Innovation Centre, Fondazione Edmund Mach, 38010, San Michele all’Adige, Italy
- Department of Wine, Vine and Beverage Sciences, School of Food Science, University of West Attica, Egaleo, 12243, Athens, Greece
| | - Matteo Marangon
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro, Italy
| | - Christine Mayr Marangon
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro, Italy
| | - Davide Slaghenaufi
- Department of Biotechnology, University of Verona, via della Pieve 70, San Pietro in Cariano, VR, Italy
| | - Maurizio Ugliano
- Department of Biotechnology, University of Verona, via della Pieve 70, San Pietro in Cariano, VR, Italy
| | - Andrea Versari
- Department of Agricultural and Food Sciences, University of Bologna, Italy
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da Silva Aguiar F, Bezerra LR, Cordão MA, Cavalcante ITR, de Oliveira JPF, do Nascimento RR, de Souza BB, Oliveira RL, Pereira ES, Filho JMP. Effects of Increasing Levels of Total Tannins on Intake, Digestibility, and Balance of Nitrogen, Water, and Energy in Hair Lambs. Animals (Basel) 2023; 13:2497. [PMID: 37570305 PMCID: PMC10416999 DOI: 10.3390/ani13152497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/21/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
This study aims to evaluate the effects of increasing tannin levels from Mimosa tenuiflora hay on the intake, digestibility, and balance of nitrogen (N), water, and energy in hair lambs. Thirty-two Santa Ines lambs, at an average age of 150 days and body weight of 26.75 ± 2.29 kg, were randomly assigned to four treatments in a completely randomized design. The treatments consisted of four diets: a control diet, tannin-free, and three diets with increasing levels of total tannin, 26.2, 52.4, and 78.6 g tannin/kg dry matter (DM). Including the total tannins in the lambs' diet led to a quadratic increase in the intake of nutrients, N-retention (g/day), water intake, water absorption and retention, energy intake, and energy excretion in feces and gases. However, the digestibility of crude protein, neutral and acid detergent fibers, and total carbohydrates decreased. It was observed that there is a correlation between the variable nutrient digestibility and N-ingested and the N-absorbed, N-urinary, and N-retained. However, the N-excreted in feces did not correlate with any of the variables studied. It is recommended to include 33 g/kg DM of total natural tannins from Mimosa tenuiflora hay in the diet of hair lambs, as it improves intake, energy balance, dietary N, and body water composition while reducing the excretion of N-urinary and gas emissions to the environment.
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Affiliation(s)
- Fabrício da Silva Aguiar
- Graduate Program in Animal Science and Health, Federal University of Campina Grande, Patos 58708110, PB, Brazil; (F.d.S.A.); (R.R.d.N.); (B.B.d.S.)
| | - Leilson Rocha Bezerra
- Graduate Program in Animal Science and Health, Federal University of Campina Grande, Patos 58708110, PB, Brazil; (F.d.S.A.); (R.R.d.N.); (B.B.d.S.)
| | - Maiza Araújo Cordão
- Animal Science Departament, Faculdades Nova Esperança-FACENE, João Pessoa 58067698, PB, Brazil;
| | | | | | - Romilda Rodrigues do Nascimento
- Graduate Program in Animal Science and Health, Federal University of Campina Grande, Patos 58708110, PB, Brazil; (F.d.S.A.); (R.R.d.N.); (B.B.d.S.)
| | - Bonifácio Benício de Souza
- Graduate Program in Animal Science and Health, Federal University of Campina Grande, Patos 58708110, PB, Brazil; (F.d.S.A.); (R.R.d.N.); (B.B.d.S.)
| | - Ronaldo Lopes Oliveira
- Department of Animal Science, Federal University of Bahia, Salvador 40170115, BA, Brazil;
| | - Elzania Sales Pereira
- Department of Animal Science, Federal University of Ceara, 2977, Mister Hull Avenue, Fortaleza 60356000, CE, Brazil;
| | - José Morais Pereira Filho
- Graduate Program in Animal Science and Health, Federal University of Campina Grande, Patos 58708110, PB, Brazil; (F.d.S.A.); (R.R.d.N.); (B.B.d.S.)
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Qi MY, Huang YC, Song XX, Ling MQ, Zhang XK, Duan CQ, Lan YB, Shi Y. Artificial saliva precipitation index (ASPI): An efficient evaluation method of wine astringency. Food Chem 2023; 413:135628. [PMID: 36750006 DOI: 10.1016/j.foodchem.2023.135628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/02/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023]
Abstract
Astringency is one of the most important organoleptic characteristics of red wines, and its intensity evaluation method has been the focus of research in recent years. An artificial saliva system was developed to establish an accurate and reliable evaluation method for the astringency intensity of dry red wines based on saliva precipitation index (SPI). To achieve this, five key protein families, which presented high reactivities and sensitivities in protein-tannin binding reactions, were selected from human whole saliva. The concentrations of the five proteins (proline-rich protein, α-amylase, lactoferrin, lysozyme, and albumin) and pH were optimized using response surface methodology based on the human salivary conditions to simulate the real salivary environment. The artificial saliva precipitation index method was applied to 60 commercial dry red wines and it exhibited a high correlation (CoefASPI = 0.94) with the sensory scores, indicating better performance than the traditional SPI method and other analytical approaches.
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Affiliation(s)
- Meng-Yao Qi
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Yong-Ce Huang
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Xi-Xian Song
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Meng-Qi Ling
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Xin-Ke Zhang
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China; Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; "The Belt and Road" International Institute of Grape and Wine Industry Innovation, Beijing University of Agriculture, Beijing 102206, China
| | - Chang-Qing Duan
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Yi-Bin Lan
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Ying Shi
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China.
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Zhang L, Guan Q, Zhang H, Tang L. Effect of Metal Ions on the Interaction of Condensed Tannins with Protein. Foods 2023; 12:foods12040829. [PMID: 36832905 PMCID: PMC9957110 DOI: 10.3390/foods12040829] [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: 01/27/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
A quantitative analysis of the precipitate effects of metal ions (Al3+, Fe2+, Cu2+, Zn2+) by bovine serum albumin (BSA) on two condensed tannins (CT) from sorghum and plum was presented in this study. The results showed that adding metal ions enhanced the precipitation of proteins by CT, depending on the type and concentration of the metal ions used in the reaction system. The presence of metal ions and precipitation results on the CT-protein complex showed that Al3+ and Fe2+ had a higher binding ability with CT and a weaker influence on the precipitation of the CT-protein complex than Cu2+ and Zn2+. However, when the initial reaction solution contained excessive amounts of BSA, the extra addition of metal ions had no significant effect on the amount of BSA precipitation. Reversely, adding Cu2+ or Zn2+ into the reaction solution increased the amount of precipitated BSA when the amount of CT was excessive. In addition, the amounts of CT from plum, rather than sorghum, generated more protein precipitate in the presence of Cu2+ or Zn2+, which may be due to the different binding modes between the metal ion and the CT-BSA complex. This study also proposed a model of the interaction between the metal ion and the CT-protein precipitate.
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Affiliation(s)
- Liangliang Zhang
- Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen 361021, China
- Institute of Chemical Industry of Forest Products, CAF, Key Laboratory of Biomass Energy and Material, Nanjing 210042, China
- Correspondence: ; Tel.: +86-592-6167377
| | - Qinhao Guan
- Institute of Chemical Industry of Forest Products, CAF, Key Laboratory of Biomass Energy and Material, Nanjing 210042, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210042, China
| | - He Zhang
- Institute of Biomedical Health Technology and Engineering, Shenzhen Bay Laboratory, Shenzhen 518107, China
| | - Lihua Tang
- Institute of Chemical Industry of Forest Products, CAF, Key Laboratory of Biomass Energy and Material, Nanjing 210042, China
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Besharati M, Maggiolino A, Palangi V, Kaya A, Jabbar M, Eseceli H, De Palo P, Lorenzo JM. Tannin in Ruminant Nutrition: Review. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238273. [PMID: 36500366 PMCID: PMC9738529 DOI: 10.3390/molecules27238273] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
Tannins are polyphenols characterized by different molecular weights that plants are able to synthetize during their secondary metabolism. Macromolecules (proteins, structural carbohydrates and starch) can link tannins and their digestion can decrease. Tannins can be classified into two groups: hydrolysable tannins and condensed tannins. Tannins are polyphenols, which can directly or indirectly affect intake and digestion. Their ability to bind molecules and form complexes depends on the structure of polyphenols and on the macromolecule involved. Tannins have long been known to be an "anti-nutritional agent" in monogastric and poultry animals. Using good tannins' proper application protocols helped the researchers observe positive effects on the intestinal microbial ecosystem, gut health, and animal production. Plant tannins are used as an alternative to in-feed antibiotics, and many factors have been described by researchers which contribute to the variability in their efficiencies. The objective of this study was to review the literature about tannins, their effects and use in ruminant nutrition.
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Affiliation(s)
- Maghsoud Besharati
- Department of Animal Science, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Ahar 5451785354, Iran
- Correspondence: (M.B.); (A.M.); (V.P.)
| | - Aristide Maggiolino
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
- Correspondence: (M.B.); (A.M.); (V.P.)
| | - Valiollah Palangi
- Department of Animal Science, Agricultural Faculty, Ataturk University, Erzurum 25240, Turkey
- Correspondence: (M.B.); (A.M.); (V.P.)
| | - Adem Kaya
- Department of Animal Science, Agricultural Faculty, Ataturk University, Erzurum 25240, Turkey
| | - Muhammad Jabbar
- Department of Zoology, Faculty of Biosciences, Cholistan University of Veterinary and Animal Sciences, Bahawalpur 63100, Pakistan
| | - Hüseyin Eseceli
- Department of Nutrition Sciences, Faculty of Health Sciences, Bandirma Onyedi Eylul University, Balikesir 10200, Turkey
| | - Pasquale De Palo
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
| | - Jose M. Lorenzo
- Centro Tecnológico de la Carne de Galicia, Avd. Galicia 4, Parque Tecnológico de Galicia, 32900 Ourense, Spain
- Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense, Universidade de Vigo, 32004 Ourense, Spain
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Wang Z, Yang J, Ren Y, Yuan C, Wang Z. The effects of the grape varieties and the wine aging periods on the tannin profiles and the astringency perceptions of wines. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01355-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Flavor Chemical Profiles of Cabernet Sauvignon Wines: Six Vintages from 2013 to 2018 from the Eastern Foothills of the Ningxia Helan Mountains in China. Foods 2021; 11:foods11010022. [PMID: 35010148 PMCID: PMC8750599 DOI: 10.3390/foods11010022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/14/2021] [Accepted: 12/17/2021] [Indexed: 12/13/2022] Open
Abstract
The eastern foothills of the Helan Mountains in the Ningxia region (Ningxia), is a Chinese wine-producing region, where Cabernet Sauvignon is the main grape cultivar; however, little compositional or flavor information has been reported on Ningxia wines. Oenological parameters, volatile profiles, and phenolic profiles were determined for 98 Ningxia Cabernet Sauvignon wines from the 2013–2018 vintages, as well as 16 from Bordeaux and California, for comparison. Ningxia wines were characterized by high ethanol, low acidity, and high anthocyanin contents. Multivariate analysis revealed that citronellol and 12 characteristic phenolic compounds distinguish Ningxia wines from Bordeaux and California wines. The concentrations of most phenolic compounds were highest in the 2018 Ningxia vintage and decreased with the age of the vintage. To our knowledge, this is the first extensive regionality study on red wines from the Ningxia region.
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Watrelot AA. Tannin Content in Vitis Species Red Wines Quantified Using Three Analytical Methods. Molecules 2021; 26:molecules26164923. [PMID: 34443511 PMCID: PMC8400854 DOI: 10.3390/molecules26164923] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/04/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022] Open
Abstract
Tannin content in red wines is positively correlated with astringency perception and wine grade; however, tannin quantification is one of the main challenges. In this study, tannin content was quantified using three analytical methods in commercial red wines from Vitis vinifera and interspecific cold-hardy hybrids including Marquette, Frontenac, and Petite pearl cultivars. Protein (PP) and methylcellulose precipitation (MCP) methods were compared to a HPLC-DAD method, which is based on the interaction between tannins and a hydrophobic surface (RPC). Frontenac wines were the poorest in tannins and Cabernet sauvignon wines were the richest regardless of the method used. In cold-hardy red wines, the tannin content was higher in Marquette with high alcohol content, which suggested that the tannins were extracted from seeds rather than skins. The high limit of quantification of the PP method and the presence of anthocyanin di-glucosides in cold-hardy wines were parameters suggesting that protein and methylcellulose precipitation methods were neither suitable nor reliable for the quantification of tannins in cold-hardy red wines. The tannin content quantified by RPC was positively correlated to tannin quantified by MCP, suggesting that the RPC method would be relevant for the quantification of tannins in red wines.
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Affiliation(s)
- Aude A Watrelot
- Department of Food Science and Human Nutrition, Iowa State University, 536 Farm House Lane, Ames, IA 50011-1054, USA
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Ricardo D, Telmo F, Catarina BP, Nuno M, Victor DF, Rosa PG. Unravelling the effects of procyanidin on gliadin digestion and immunogenicity. Food Funct 2021; 12:4434-4445. [PMID: 33881102 DOI: 10.1039/d1fo00382h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of procyanidin dimer B3, a common food tannin, on the digestion of gliadin proteins was investigated by monitoring the changes in the immunogenic peptides produced during in vitro digestion and immunoreactivity. Interaction studies between procyanidin dimer B3, gluten proteins and/or digestive enzymes were performed by SDS-PAGE. The effect of procyanidin B3 on the enzymatic activity of trypsin, chymotrypsin and pancreatin was evaluated. The differences in the number and nature of immunogenic peptides released during digestion were identified by mass spectrometry. Briefly, the enzymatic activity of gastrointestinal enzymes was only slightly affected but a significant decrease in the immunological properties of the peptides produced during digestion was observed. Overall, although further studies are needed, the interaction between polyphenols and gluten proteins clearly influences gluten protein digestion and immunogenicity, thus suggesting that the consumption of dietary polyphenols can significantly affect the degree of celiac disease downstream immune reactions.
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Affiliation(s)
- Dias Ricardo
- LAQV-REQUIMTE Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.
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Huang R, Xu C. An overview of the perception and mitigation of astringency associated with phenolic compounds. Compr Rev Food Sci Food Saf 2020; 20:1036-1074. [PMID: 33340236 DOI: 10.1111/1541-4337.12679] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 11/07/2020] [Accepted: 11/12/2020] [Indexed: 12/21/2022]
Abstract
Astringency, as a kind of puckering, drying, or rough sensation, is widely perceived from natural foods, especially plants rich in phenolic compounds. Although the interaction and precipitation of salivary proteins by phenolic compounds was often believed as the major mechanism of astringency, a definitive theory about astringency is still lacking due to the complex oral sensations. The interaction with oral epithelial cells and the activation of trigeminal chemoreceptors and mechanoreceptors also shed light on some of the phenolic astringency mechanisms, which complement the insufficient mechanism of interaction with salivary proteins. Since phenolic compounds with different types and structures show different astringency thresholds in a certain regularity, there might be some relationships between the phenolic structures and perceived astringency. On the other hand, novel approaches to reducing the unfavorable perception of phenolic astringency have been increasingly emerging; however, the according summary is still sparse. Therefore, this review aims to: (a) illustrate the possible mechanisms of astringency elicited by phenolic compounds, (b) reveal the possible relationships between phenolic structures and perception of astringency, and (c) summarize the emerging mitigation approaches to astringency triggered by phenolic compounds. This comprehensive review would be of great value to both the understanding of phenolic astringency and the finding of appropriate mitigation approaches to phenolic astringency in future research.
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Affiliation(s)
- Rui Huang
- The Food Processing Center, Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Changmou Xu
- The Food Processing Center, Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska
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Identification of compounds in red wine that effectively upregulate aquaporin-3 as a potential mechanism of enhancement of skin moisturizing. Biochem Biophys Rep 2020; 24:100864. [PMID: 33294640 PMCID: PMC7695920 DOI: 10.1016/j.bbrep.2020.100864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 11/03/2020] [Accepted: 11/16/2020] [Indexed: 11/29/2022] Open
Abstract
In a previous clinical study, the moisture content in the stratum corneum of healthy Japanese women who consumed a beverage rich in oligomeric proanthocyanidins (OPCs) made from red wine extract was found to be higher than that in the control group. This finding suggested that OPCs can increase skin moisture content. In this study, we determined the expression level of aquaporin-3 (AQP3) in keratinocytes to elucidate the mechanism by which compounds in red wine grape increase moisture content in stratum corneum. Through in vitro studies, we confirmed that normal human epidermal keratinocytes (NHEK) incubated with red wine induced AQP3 expression. Furthermore, the supplementation of red wine fractions enriched in OPC was shown to increase AQP3 expression. Besides, the component of OPC-rich fractions that upregulated AQP3 expression was found to be a gallic acid (GA)-binding flavan-3-ol, particularly oligomeric compounds. We found that GA-binding OPC were able to upregulate AQP3 expression and that these compounds were enriched in red wine. Our findings might suggest that the mechanism of enhancement of moisture content in stratum corneum by red wine might be via the upregulation of AQP3 expression in the epidermal keratinocytes. Our previous clinical study showed red wine polyphenol induced skin moisture. We demonstrated the mechanism of skin moisturization via AQP3 in keratinocytes. OPCs, especially GA-binding, were active compound for upregulation of AQP3. Skin moisturization mechanism by OPCs was suggested via AQP3 expression.
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Key Words
- AQP3, aquaporin-3
- Aquaporin-3
- C, (−)-catechin
- C-EC, procyanidin B4
- C–C, procyanidin B3
- EC, (−)-epicatechin
- EC-C, procyanidin B1
- EC-EC, procyanidin B2
- EC-EC-EC, procyanidin C1
- ECG, (−)-epicatechin gallate
- EGCG, (−)-epigallocatechin
- Flavan-3-ol
- GA, gallic acid
- Grape
- HIF-1α, hypoxia-inducible factor 1α
- LC-TOF-MS, liquid chromatography/time-of-flight/mass spectrometry
- NHEK, normal human epidermal keratinocytes
- OPC, oligomeric proanthocyanidin
- Oligomeric proanthocyanidin
- PPARγ, peroxisome proliferator-activated receptor γ
- RA, retinoic acid
- Skin moisturization
- Vitis vinifera
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Correlations Between Phenolic Composition and Perceived Astringency of Wines. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10228020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The astringent sensation of wines is attributable to the composition and concentration of phenolic compounds. However, in many cases, experimental results have shown a gap in relation to sensory astringency. The aim of the present study was to evaluate the relationships between the experimental evidence of astringent attributes and perceived astringency. To this end, the concentrations of phenolic compounds, namely, the total phenolic content (TPC), the polymeric tannin content (PTC), the proanthocyanidin content (PAC) and the total anthocyanin content (TAC), in wines made from a variety of grape breeding lines were estimated and their relationships to perceived astringency were evaluated. The TPC and the PTC showed strong positive correlations with perceived astringency. In contrast, the PAC showed a moderate correlation with perceived astringency, which was lower than that shown by the PTC despite their similar phenolic compositions. Unlike the other attributes, the TAC showed a weak correlation with perceived astringency. We concluded that the TPC and the PTC showed good correlations with perceived astringency and could be used as an index for predicting the astringency of wines.
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14
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Wei X, Ju Y, Ma T, Zhang J, Fang Y, Sun X. New perspectives on the biosynthesis, transportation, astringency perception and detection methods of grape proanthocyanidins. Crit Rev Food Sci Nutr 2020; 61:2372-2398. [PMID: 32551848 DOI: 10.1080/10408398.2020.1777527] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Proanthocyanidins (PAs) are important secondary metabolites crucial for the quality of grape berry and wine. Despite important advances in our understanding of the structural and regulatory genes involved in the PAs biosynthesis pathway, our knowledge about the details of biosynthetic and regulatory networks, especially the mechanism of polymerization and transportation remains limited. We provided an overview of the latest discoveries related to the mechanisms of grape PAs structure, astringency properties, detection methods, biosynthesis and transportation. We also summarized the environmental influencing factors of PAs synthesis in grape. Future trends were discussed.
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Affiliation(s)
- Xiaofeng Wei
- College of Enology, College of Food Science and Engineering, Viti-viniculture Engineering Technology Center of State Forestry and Grassland Administration, Shaanxi Engineering Research Center for Viti-Viniculture, Northwest A&F University, Yangling, China
| | - Yanlun Ju
- College of Enology, College of Food Science and Engineering, Viti-viniculture Engineering Technology Center of State Forestry and Grassland Administration, Shaanxi Engineering Research Center for Viti-Viniculture, Northwest A&F University, Yangling, China
| | - Tingting Ma
- College of Enology, College of Food Science and Engineering, Viti-viniculture Engineering Technology Center of State Forestry and Grassland Administration, Shaanxi Engineering Research Center for Viti-Viniculture, Northwest A&F University, Yangling, China
| | | | - Yulin Fang
- College of Enology, College of Food Science and Engineering, Viti-viniculture Engineering Technology Center of State Forestry and Grassland Administration, Shaanxi Engineering Research Center for Viti-Viniculture, Northwest A&F University, Yangling, China
| | - Xiangyu Sun
- College of Enology, College of Food Science and Engineering, Viti-viniculture Engineering Technology Center of State Forestry and Grassland Administration, Shaanxi Engineering Research Center for Viti-Viniculture, Northwest A&F University, Yangling, China
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15
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Watrelot AA, Norton EL. Chemistry and Reactivity of Tannins in Vitis spp.: A Review. Molecules 2020; 25:molecules25092110. [PMID: 32365968 PMCID: PMC7248762 DOI: 10.3390/molecules25092110] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 11/24/2022] Open
Abstract
Tannins are a group of polyphenols found in fruits, leaves, trees, etc., well known in the leather industry and in apples, persimmons and grapes, because of their capacity to interact with other polyphenols or other components either from the food product or from saliva. Prior to being able to interact with other compounds, tannins have to be extracted from the food matrix, which depends on their chemistry, as well as the chemical structure of other components, such as cell wall material and proteins. Vitis vinifera grapes are commonly grown around the world and are used in winemaking, providing good quality wines with different levels of tannins responsible for the final wine’s astringency. Many studies have focused on tannins extractability and retention with cell wall material, and the reactivity of tannins with proteins in Vitis vinifera grapes and wine, but there are very few reports for other Vitis species. However, depending on the environmental characteristics of certain regions, Vitis hybrid grapes are grown and used to produce wines more and more. This review focuses on the comparison of the chemistry of tannins, and their reactivity with other macromolecules in Vitis species.
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Affiliation(s)
- Aude A. Watrelot
- Department of Food Science and Human Nutrition, Iowa State University, 536 Farm House Lane, Ames, IA 50011-1054, USA;
- Correspondence: ; Tel.: +1-515-294-0343
| | - Erin L. Norton
- Department of Food Science and Human Nutrition, Iowa State University, 536 Farm House Lane, Ames, IA 50011-1054, USA;
- Midwest Grape and Wine Industry Institute, Iowa State University, 536 Farm House Lane, Ames, IA 50011-1054, USA
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16
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Kang W, Niimi J, Muhlack RA, Smith PA, Bastian SE. Dynamic characterization of wine astringency profiles using modified progressive profiling. Food Res Int 2019; 120:244-254. [DOI: 10.1016/j.foodres.2019.02.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 10/27/2022]
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17
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Unravelling the scientific research on grape and wine phenolic compounds: a bibliometric study. Scientometrics 2019. [DOI: 10.1007/s11192-019-03029-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Chemical and sensorial investigation of in-mouth sensory properties of grape anthocyanins. Sci Rep 2018; 8:17098. [PMID: 30459417 PMCID: PMC6243997 DOI: 10.1038/s41598-018-35355-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 11/05/2018] [Indexed: 01/12/2023] Open
Abstract
Anthocyanins are water-soluble pigments found in the cell vacuoles of fruits and flowers, performing several roles from insects attraction to stress protection. Their antioxidant activity contributes to human health, and consuming plant-derived products provides their higher source in the diet. Although their colour and nutritional features, their contribution to sensory properties of foods has not been widely investigated. In wine, preferences are connected with sensory attributes of colour, aroma, taste, and mouthfeel. In this study, grape anthocyanin extracts (TAE) were fractionated using centrifugal partition chromatography (CPC) and preparative HPLC in three fractions, i.e glucoside (GF), acetylated (AF) and cinnamoylated (CF) anthocyanins. Sensory properties were investigated by chemical analysis, as reactivity towards bovin serum albumin (BSA) and salivary proteins, and in tasting sessions to assess anthocyanins best estimated thresholds (BET) in wine-like solution. Anthocyanins reacted with both BSA and salivary proteins, but to different extents, because higher interaction between salivary proteins and anthocyanins were found. Cinnamoylated anthocyanins are the most reactive to salivary proteins. Tasting sessions suggested an involvement of anthocyanins as in-mouth contributors in wine, since their BETs were 255, 297, 68, and 58 mg/L for TAE, GF, AF, and CF, respectively, and the descriptors reported were astringency and bitterness.
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19
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Ma W, Waffo-Téguo P, Alessandra Paissoni M, Jourdes M, Teissedre PL. New insight into the unresolved HPLC broad peak of Cabernet Sauvignon grape seed polymeric tannins by combining CPC and Q-ToF approaches. Food Chem 2018; 249:168-175. [DOI: 10.1016/j.foodchem.2018.01.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 12/30/2017] [Accepted: 01/01/2018] [Indexed: 12/11/2022]
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20
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First evidence of epicatechin vanillate in grape seed and red wine. Food Chem 2018; 259:304-310. [PMID: 29680058 DOI: 10.1016/j.foodchem.2018.03.134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/24/2018] [Accepted: 03/29/2018] [Indexed: 12/19/2022]
Abstract
Flavan-3-ols are units incorporating condensed tannin, which are widely present in grape and wine. They play a considerable role in wine sensory perception such as astringency, bitterness and mouth-feel. In grape and wine, the flavan-3-ols reported to date are (epi)catechin, (epi)gallocatechin, (epi)gallocatechin gallate and (epi)catechin glycoside. This study now shows the presence of a new flavan-3-ol epicatechin vanillate in grape seed and red wine. A putative unknown flavan-3-ol derived from grape seed was targeted by LC-HRMS/MS. Fractionation and purification by centrifugal partition chromatography and Prep HPLC allowed us to obtain the pure new flavan-3-ol. NMR and HRMS data revealed this compound to be epicatechin-3-O-vanillate. Quantification analysis results showed that epicatechin vanillate present in grape seed and red wine in the μg/g dry seed and the μg/L concentration range, respectively.
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21
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Fujimaki T, Mori S, Horikawa M, Fukui Y. Isolation of proanthocyanidins from red wine, and their inhibitory effects on melanin synthesis in vitro. Food Chem 2017; 248:61-69. [PMID: 29329871 DOI: 10.1016/j.foodchem.2017.12.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/23/2017] [Accepted: 12/07/2017] [Indexed: 11/28/2022]
Abstract
The red wines made from Vitis vinifera were identified as skin-whitening effectors by using in vitro assays. OPCs in the wine were evaluated for tyrosinase activity and melanogenesis. Strong tyrosinase inhibitory activity was observed in fractions with high oligomeric proanthocyanidin (OPC) content. Among OPC dimers, a strong inhibitory effect on tyrosinase was observed with OPCs which contain (+)-catechin as an upper unit. Melanogenesis inhibitory effect was observed with OPCs which have (-)-epicatechin as upper units. Also, OPC trimers, upper and middle units joined with 4 → 8 bonds, showed stronger effects compared to trimers with 4 → 6 linkages. Interestingly, (-)-epicatechin-(4β → 8)-(-)-epicatechin 3-O-gallate, which is a unique component of grapes has potent inhibitory effects on both tyrosinase and melanogenesis. Our data provide structural information about such active compounds. These results suggest that red wines containing OPC, have high melanogenesis inhibitory effect and are supposed to have skin-whitening effect.
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Affiliation(s)
- Takahiro Fujimaki
- Suntory Global Innovation Center Ltd. Research Institute, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
| | - Shoko Mori
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
| | - Manabu Horikawa
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
| | - Yuko Fukui
- Suntory Global Innovation Center Ltd. Research Institute, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
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22
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Changes in Tannin Composition of Syrah Grape Skins and Seeds during Fruit Ripening under Contrasting Water Conditions. Molecules 2017; 22:molecules22091453. [PMID: 28862687 PMCID: PMC6151526 DOI: 10.3390/molecules22091453] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/28/2017] [Accepted: 08/30/2017] [Indexed: 11/17/2022] Open
Abstract
Tannin accumulation and composition were determined in skins and seeds isolated from Vitis vinifera cv. Syrah grapes submitted to contrasting water regimes under semiarid climatic conditions. Three irrigation treatments were conducted, starting at berry set through harvest of two growing seasons, 2011 and 2012: irrigation at 100% of crop evapotranspiration ETc (FI), irrigation at 50% of ETc (DI) and non-irrigated (NI). Seed total tannins did not vary with maturity but those of skins underwent a progressive decline (especially in 2011), expressed both on a fresh weight and on a per berry basis. Skin total tannin concentration and content per berry were increased under NI and DI conditions, mainly in 2012. In contrast, seed total tannins (in 2012) and flavan-3-ol monomers and tannin oligomers (both years) were higher in the fully irrigated vines (FI). Skin polymer size increased during ripening, NI and DI skins showing higher mean degree of polymerization (mDP) compared to FI at harvest. NI was also associated with a lower percentage of galloylation (%G) in skin oligomeric fraction (in 2012) and a lower percentage of prodelphinidins in the skin polymeric fraction (both years) at harvest. The mDP and %G of seed extracts did not vary during ripening and were higher in NI but only in 2012. According to the results, management of vine water status was shown to influence tannin amount and composition of Syrah grapes grown under semiarid conditions.
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23
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Jonker A, Yu P. The Occurrence, Biosynthesis, and Molecular Structure of Proanthocyanidins and Their Effects on Legume Forage Protein Precipitation, Digestion and Absorption in the Ruminant Digestive Tract. Int J Mol Sci 2017; 18:E1105. [PMID: 28531145 PMCID: PMC5455013 DOI: 10.3390/ijms18051105] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 05/08/2017] [Accepted: 05/15/2017] [Indexed: 12/28/2022] Open
Abstract
Forages grown in temperate regions, such as alfalfa (Medicago sativa L.) and white clover (Trefolium repens L.), typically have a high nutritional value when fed to ruminants. Their high protein content and degradation rate result, however, in poor utilization of protein from the forage resulting in excessive excretion of nitrogen into the environment by the animal. Proanthocyanindins (also known as condensed tannins) found in some forage legumes such as birdsfoot trefoil (Lotus corniculatus L.), bind to dietary protein and can improve protein utilization in the animal. This review will focus on (1) the occurrence of proanthocyanidins; (2) biosynthesis and structure of proanthocyanidins; (3) effects of proanthocyanidins on protein metabolism; (4) protein precipitating capacity of proanthocyanidins and their effects on true intestinal protein adsorption by ruminants; and (5) effect on animal health, animal performance and environmental emissions.
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Affiliation(s)
- Arjan Jonker
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada.
- Grasslands Research Centre, AgResearch Ltd., Tennent Drive, Private Bag 11008, Palmerston North 4442, New Zealand.
| | - Peiqiang Yu
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada.
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