| Autor: |
Roberto Larcher, Sergio Moser, Ainhoa Usua Menolli, Loris Tonidandel, Giorgio Nicolini |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
OENO One, Vol 47, Iss 1, Pp 65-68 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
2494-1271 |
| DOI: |
10.20870/oeno-one.2013.47.1.1535 |
| Popis: |
Aim: To evaluate the potential risk of ethyl carbamate (EC) formation in wine by studying its production kinetics at sub-optimal storage temperatures. Methods and results: The kinetics of EC formation was investigated in 60 white wines obtained from 6 varietal juices fermented with 10 yeast strains. The wines were analysed for their urea content at bottling, then EC formation was monitored during in-bottle storage at < 12 °C for 150 days followed by 152 days at 40 °C. Storage at < 12 °C had no effect on EC formation, regardless of initial urea content ; however, at 40 °C we found a positive correlation between initial urea content and final EC content. Conclusion: Urea content higher than 20 mg/L in wine kept at 40 °C can produce from 15 up to 30 μg/L EC in less than 5 days. Two yeast strains, La Claire SP665 and Maurivin Platinum, minimised the urea in wine, reducing the risk of EC formation. Significance and impact of the study: The temperatures used in this study can be accidentally - but easily - reached during sub-optimal wine storage and shipping, and in the presence of substantial amounts of urea, the EC level can exceed the warning levels established by some countries in just a few days. The paper confirms the importance of minimising urea production in wine and controlling temperature during storage and shipping. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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