<i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must
<i>Myo</i>-inositol polyalcohol is a characteristic component of natural and concentrated grape musts (CMs), and Regulation (EU) no. 1308/2013 prescribes its presence as a marker of the authenticity of rectified concentrated must (RCM). Other polyalcohols besides <i>myo</i>-i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/8/3609 |
| _version_ | 1797604072794095616 |
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| author | Mauro Paolini Matteo Perini Letizia Allari Loris Tonidandel Fabio Finato Katia Guardini Roberto Larcher |
| author_facet | Mauro Paolini Matteo Perini Letizia Allari Loris Tonidandel Fabio Finato Katia Guardini Roberto Larcher |
| author_sort | Mauro Paolini |
| collection | DOAJ |
| description | <i>Myo</i>-inositol polyalcohol is a characteristic component of natural and concentrated grape musts (CMs), and Regulation (EU) no. 1308/2013 prescribes its presence as a marker of the authenticity of rectified concentrated must (RCM). Other polyalcohols besides <i>myo</i>-inositol, such as <i>scyllo</i>-inositol or minor sugars, could be considered authenticity markers, but an extensive search in the literature yielded no exhaustively investigated study of their concentration variability in genuine products. The aim of this study was to create an extensive national data bank of minor carbohydrates profiles and investigate the impact of the geographical origin and the different vintages on the concentration of these compounds; to this end, 450 authentic Italian grape musts of different varieties were sampled and analyzed during the harvest season in 2019, 2020, and 2021. The grape musts from the Italian wine-growing areas CII and CIIIb had <i>myo</i>- and <i>scyllo</i>-inositol contents always higher than 756 and 39 mg/kg of sugar, respectively. Conversely, also considering other mono- and disaccharides, sucrose, sorbitol, lactose, maltose, and isomaltose showed contents always lower than 534, 1207, 390, 2222, and 1639 mg/kg of sugar, respectively. The general applicability to the CM and RCM of the proposed authenticity thresholds, established in the must, was demonstrated by studying the influence of must concentration on the <i>myo</i>- and <i>scyllo</i>-inositol content. Inter-laboratory comparison experiments were also conducted to harmonize and characterize laboratory methods and validate the analytical dataset. Based on the obtained results, the text of the EU legislation (Reg. (EU) 1308/2013), which defines the characteristics of the must and the CRM product, should be revised. |
| first_indexed | 2024-03-11T04:41:06Z |
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| id | doaj.art-1217c39d4c094948bb0612313d519081 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T04:41:06Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-1217c39d4c094948bb0612313d5190812023-11-17T20:41:27ZengMDPI AGMolecules1420-30492023-04-01288360910.3390/molecules28083609<i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape MustMauro Paolini0Matteo Perini1Letizia Allari2Loris Tonidandel3Fabio Finato4Katia Guardini5Roberto Larcher6Fondazione Edmund Mach (FEM), Via E. Mach 1, 38098 San Michele all’Adige, ItalyFondazione Edmund Mach (FEM), Via E. Mach 1, 38098 San Michele all’Adige, ItalyUnione Italiana Vini Servizi (UIV), Viale del Lavoro 8, 37135 Verona, ItalyFondazione Edmund Mach (FEM), Via E. Mach 1, 38098 San Michele all’Adige, ItalyUnione Italiana Vini Servizi (UIV), Viale del Lavoro 8, 37135 Verona, ItalyUnione Italiana Vini Servizi (UIV), Viale del Lavoro 8, 37135 Verona, ItalyFondazione Edmund Mach (FEM), Via E. Mach 1, 38098 San Michele all’Adige, Italy<i>Myo</i>-inositol polyalcohol is a characteristic component of natural and concentrated grape musts (CMs), and Regulation (EU) no. 1308/2013 prescribes its presence as a marker of the authenticity of rectified concentrated must (RCM). Other polyalcohols besides <i>myo</i>-inositol, such as <i>scyllo</i>-inositol or minor sugars, could be considered authenticity markers, but an extensive search in the literature yielded no exhaustively investigated study of their concentration variability in genuine products. The aim of this study was to create an extensive national data bank of minor carbohydrates profiles and investigate the impact of the geographical origin and the different vintages on the concentration of these compounds; to this end, 450 authentic Italian grape musts of different varieties were sampled and analyzed during the harvest season in 2019, 2020, and 2021. The grape musts from the Italian wine-growing areas CII and CIIIb had <i>myo</i>- and <i>scyllo</i>-inositol contents always higher than 756 and 39 mg/kg of sugar, respectively. Conversely, also considering other mono- and disaccharides, sucrose, sorbitol, lactose, maltose, and isomaltose showed contents always lower than 534, 1207, 390, 2222, and 1639 mg/kg of sugar, respectively. The general applicability to the CM and RCM of the proposed authenticity thresholds, established in the must, was demonstrated by studying the influence of must concentration on the <i>myo</i>- and <i>scyllo</i>-inositol content. Inter-laboratory comparison experiments were also conducted to harmonize and characterize laboratory methods and validate the analytical dataset. Based on the obtained results, the text of the EU legislation (Reg. (EU) 1308/2013), which defines the characteristics of the must and the CRM product, should be revised.https://www.mdpi.com/1420-3049/28/8/3609characterization<i>myo</i>-inositol<i>scyllo</i>-inositolminor carbohydratesgrape mustdata bank |
| spellingShingle | Mauro Paolini Matteo Perini Letizia Allari Loris Tonidandel Fabio Finato Katia Guardini Roberto Larcher <i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must Molecules characterization <i>myo</i>-inositol <i>scyllo</i>-inositol minor carbohydrates grape must data bank |
| title | <i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must |
| title_full | <i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must |
| title_fullStr | <i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must |
| title_full_unstemmed | <i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must |
| title_short | <i>Myo</i>-Inositol, <i>Scyllo</i>-Inositol, and Other Minor Carbohydrates as Authenticity Markers for the Control of Italian Bulk, Concentrate, and Rectified Grape Must |
| title_sort | i myo i inositol i scyllo i inositol and other minor carbohydrates as authenticity markers for the control of italian bulk concentrate and rectified grape must |
| topic | characterization <i>myo</i>-inositol <i>scyllo</i>-inositol minor carbohydrates grape must data bank |
| url | https://www.mdpi.com/1420-3049/28/8/3609 |
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