Moldy taint

Context

Since the last 15th years, moldy earthy and fungus taints appeared in some vineyards, with  a renewed over the last few years :

  • Many compounds are responsible for these defects and might change according to the grape variety, area and climatic conditions linked to the vintage.
  • They are always associated to a bad sanitary state of harvest, and often linked to internal rot in the hearth of the grapes, which make their detection very difficult.
  • Some defects are only detectable on grapes and/or juices, but some others can persist and alter wine quality.

Analytica expertise

Compound

Descriptor

Analytical method

Matrix

Analysis duration

(-)-geosmin *

damp earth and red beets

SBSE/GC/MS

GRAPES,
JUICE
& WINE

24 to 48 hours

2-methylisoborneol (MIB)

damp earth, camphroraceous

SBSE/GC/MS

1-octen-3-one

Fungus

SPME/GC/MS

2-isopropyl-3-methoxypyrazine (IPMP)

Earthy, green

SPME/GC/MS

Enological expertise

  • Detection of infected batch, even at a very low level
  • Choice of treatment and winemaking management
  • Purchase validation

Our quality guarantee

*COFRAC accredited analysis (accreditation N°1-0588, available on http://www.cofrac.fr/)

  • Method validated according to OIV Oeno 10/2005 resolution and NF V03-110 standard validation
Sarco

Laboratoire Sarco®   -  25, rue Aristide Bergès 33270 FLOIRAC - +33 5 57 77 96 27 - This email address is being protected from spambots. You need JavaScript enabled to view it.