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Moreno-Olivares JD, Paladines-Quezada DF, Giménez-Bañón MJ, Bleda-Sánchez JA, Cebrián-Pérez A, Gómez-Martínez JC, Gil-Muñoz R. Proanthocyanidins composition in new varieties descended from Monastrell. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:5039-5049. [PMID: 36977630 DOI: 10.1002/jsfa.12578] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND The wine sector is constantly evolving, in order to adapt to consumer tastes. The organoleptic characteristics in wines are the main factors to obtain quality wines. Proanthocyanidins (PAs) are responsible in an important way for positive aspects in quality wines, such as body and color stability in red wines, but they are also responsible for sensory characteristics that can be negative for their quality when found in excessive concentrations. One strategy to improve grapevines and wines is to obtain new varieties, so our research institute has been selecting some of them from direct crosses between Monastrell and other considered premium varieties such as Cabernet Sauvignon and Syrah. RESULTS A quantitative analysis in grapes, seeds and wines was carried out during three consecutive seasons (2018, 2019 and 2020) in order to characterize PAs composition and concentration in the following new varieties: MC80 (Monastrell × Cabernet Sauvignon), MC98, MC4, MC18 and MS10 (Monastrell × Syrah). Other aspect to study was the extraction capacity of the different new varieties of PAs during maceration process into must/wine. CONCLUSION In general, the results showed higher concentrations in PAs in most crosses for the three seasons studied compared to Monastrell variety. It was remarkable that a higher concentration of epigallocatechin was found in most of the wines elaborated with the crosses, being a positive aspect from an organoleptic point of view, since this compound provides softness to the wines. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Juan Daniel Moreno-Olivares
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
| | - Diego Fernando Paladines-Quezada
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
| | - María José Giménez-Bañón
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
| | - Juan Antonio Bleda-Sánchez
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
| | - Ana Cebrián-Pérez
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
| | - José Cayetano Gómez-Martínez
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
| | - Rocío Gil-Muñoz
- Murcian Institute of Agricultural and Environmental Research and Development, Department of Viticulture and Oenology, Murcia, Spain
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Effect of Cocoa Roasting on Chocolate Polyphenols Evolution. Antioxidants (Basel) 2023; 12:antiox12020469. [PMID: 36830027 PMCID: PMC9952295 DOI: 10.3390/antiox12020469] [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: 12/29/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Cocoa and chocolate antioxidants might contribute to human health through, for instance, blood flow improvement or blood pressure and glycemia reduction, as well as cognitive function improvement. Unfortunately, polyphenol content is reduced during cocoa fermentation, drying, roasting and all the other phases involved in the chocolate production. Here, we investigated the evolution of the polyphenol content during all the different steps of chocolate production, with a special emphasis on roasting (3 different roasting cycles with 80, 100, and 130 °C as maximum temperature). Samples were followed throughout all processes by evaluating the total polyphenols content, the antioxidant power, the epicatechin content, and epicatechin mean degree of polymerization (phloroglucinol adducts method). Results showed a similar trend for total polyphenol content and antioxidant power with an unexpected bell-shaped curve: an increase followed by a decrease for the three different roasting temperatures. At the intermediate temperature (100 °C), the higher polyphenol content was found just after roasting. The epicatechin content had a trend similar to that of total polyphenol content but, interestingly, the mean degree of polymerization data had the opposite behavior with some deviation in the case of the highest temperature, probably due to epicatechin degradation. It seems likely that roasting can free epicatechin from oligomers, as a consequence of oligomers remodeling.
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Accelerated Solvent Extraction of Phenols from Lyophilised Ground Grape Skins and Seeds. BEVERAGES 2023. [DOI: 10.3390/beverages9010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The efficient extraction of phenols from grapes is an important step for their reliable quantification. The aim was to optimise the lyophilisation process and the extraction of phenols from grape skins and seeds. The phenol extraction yield from lyophilised tissues was investigated with different accelerated solvent extraction (ASE) operating conditions. Skins and seeds were separated from frozen berries and lyophilised without being ground. The weight loss during lyophilisation was followed daily. Phenols were extracted from lyophilised, cryo-ground seeds and skins with ASE at room temperature and 10.3 MPa using 80% aqueous acetone and 60% aqueous methanol. The effects of ASE operational parameters (the number of extraction cycles (ECs) and static time (ST) duration) were investigated. The yield of extracted phenols was evaluated spectrophotometrically by determining total phenolic index at 280 nm (TPI). The weight of skins and seeds significantly dropped after 24 h of lyophilisation and continued to decrease, although not significantly, up until the 9th day. The optimal lyophilisation time was estimated to be 3 days and 5 days for skins and seeds, respectively. The phenol extraction yield was significantly affected after changes of ASE conditions. Based on TPI, the optimal ASE conditions were as follows: (i) lyophilised seeds—eight ECs with 10 min ST using aqueous acetone and then four ECs with 20 min ST using aqueous methanol; (ii) lyophilised skins—eight ECs with 1 min ST using aqueous acetone and then one EC with 20 min ST using aqueous methanol.
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Ferrero-Del-Teso S, Suárez A, Ferreira C, Perenzoni D, Arapitsas P, Mattivi F, Ferreira V, Fernández-Zurbano P, Sáenz-Navajas MP. Modeling grape taste and mouthfeel from chemical composition. Food Chem 2022; 371:131168. [PMID: 34601211 DOI: 10.1016/j.foodchem.2021.131168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/20/2021] [Accepted: 09/15/2021] [Indexed: 02/09/2023]
Abstract
This research aims at predicting sensory properties generated by the phenolic fraction (PF) of grapes from chemical composition. Thirty-one grape extracts of different grape lots were obtained by maceration of grapes in hydroalcoholic solution; afterward they were submitted to solid phase extraction. The recovered PFs were reconstituted in a wine model. Subsequently the wine models, containing the PFs, were sensory (taste, mouthfeel) and chemically characterized. Significant sensory differences among the 31 PFs were identified. Sensory variables were predicted from chemical parameters by PLS-regression. Tannin activity and concentration along with mean degree of polymerization were found to be good predictors of dryness, while the concentration of large polymeric pigments seems to be involved in the "sticky" percept and flavonols in the "bitter" taste. Four fully validated PLS-models predicting sensory properties from chemical variables were obtained. Two out of the three sensory dimensions could be satisfactorily modeled. These results increase knowledge about grape properties and proposes the measurement of chemical variables to infer grape quality.
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Affiliation(s)
- Sara Ferrero-Del-Teso
- Instituto de Ciencias de la Vid y del Vino (ICVV) (Universidad de La Rioja-CSIC-Gobierno de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, La Rioja, Spain
| | - Alejandro Suárez
- Instituto de Ciencias de la Vid y del Vino (ICVV) (Universidad de La Rioja-CSIC-Gobierno de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, La Rioja, Spain
| | - Chelo Ferreira
- Laboratorio de Análisis del Aroma y Enología (LAAE), Department of Analytical Chemistry, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2) (UNIZAR-CITA), c/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Daniele Perenzoni
- Research and Innovation Centre, Food Quality and Nutrition Department, and Technology Transfer Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Panagiotis Arapitsas
- Research and Innovation Centre, Food Quality and Nutrition Department, and Technology Transfer Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Fulvio Mattivi
- Research and Innovation Centre, Food Quality and Nutrition Department, and Technology Transfer Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all'Adige, Italy; University of Trento, Department of Cellular, Computational and Integrative Biology, CIBIO, 38122 Trento, Italy
| | - Vicente Ferreira
- Laboratorio de Análisis del Aroma y Enología (LAAE), Department of Analytical Chemistry, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2) (UNIZAR-CITA), c/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Purificación Fernández-Zurbano
- Instituto de Ciencias de la Vid y del Vino (ICVV) (Universidad de La Rioja-CSIC-Gobierno de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, La Rioja, Spain
| | - María-Pilar Sáenz-Navajas
- Instituto de Ciencias de la Vid y del Vino (ICVV) (Universidad de La Rioja-CSIC-Gobierno de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, La Rioja, Spain.
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