Automated optical grape sorting: Influence of grape rot on the contents of biogenic amines in musts and wines of the vintages 2010 and 2011

作者：Hausinger Katharina^*; Lipps Michael; Raddatz Heike; Rosch Achim; Rudy Horst; Scholten Gerd; Schrenk Dieter

来源：Mitteilungen Klosterneuburg, 2013, 63(2): 70-78.

• grape rot
• Mosel
• histamine
• putrescine
• optical grape sorting

Automated optical grape sorting was tested concerning grape rot in the vintages of 2010 and 2011 in the Mosel wine region. Different grape varieties, especially 'Riesling', were sorted and the four different fractions, control (unsorted berries), free-run (juice from opened berries, if present), positive (sound and intact berries) and negative (sorted and rotten berries) were analysed for the content of the biogenic amines putrescine and histamine. Since these fractions contain different amounts of rotten grapes, the aim was to determine the influence of grape rot on the contents of biogenic amines in the resulting musts and wines. It could be shown that the infection of the berries by microorganisms resulted in only small contents of these biogenic amines in the range of 0.1 to 1.2 mg/l. With putrescine, the negative fraction occasionally contained slightly higher amounts. No correlation could be found between the corresponding must and wine fractions, e.g. histamine was mainly formed during the alcoholic fermentation. In conclusion, different intensities of rot on grapes in the sorting factions did not highly influence the content of putrescine and histamine in the resulting musts and wines and so did not affect the wine quality.

• 出版日期2013