dimethyl disulphide

300 µg per capsule

Rotten vegetable, like a sewage treatment plant”

Certified wine flavour standard used to train professional tasters to recognize and scale the intensity of rotten vegetable character. Dimethyl disulphide is produced in wine as a result of oxidation of methanethiol. Its presence is indicative of wine oxidation or 'stressed' fermentations. It is also formed when wine is exposed to light. Occasionally, dimethyl disuphide can appear in wine as a result of the degradation of suphur-containing fungicides used on grapes. The compound imparts a sulphury off-flavour, reminiscent of rotten vegetables and asparagus.

Food grade | free from sensory impurities | extensively tested | safe to smell and taste.

Flavour cards

Flavour standard information

Technical specification

Assessment
The best way to detect the rotten vegetable sulphury character associated with dimethyl disulphide is as follows. Without covering the glass, swirl the sample to release the aroma. Take a single short sniff. Repeat as necessary.
Amount of flavour per capsule
300 µg per capsule
Threshold
The flavour threshold of dimethyl disulphide in wine is 30 - 300 µg / l.
Origins
Dimethyl disulphide is produced in wine through oxidation of methanethiol. Its presence is indicative of wine oxidation or ‘stressed’ fermentations. Exposure of wine to light can also lead to formation of dimethyl disulphide and other sulphur compounds.
Confusions
Dimethyl disulphide imparts a sulphury off-flavour to wine, reminiscent of rotten vegetables and asparagus. The compound can also arise during wine making via methanethiol from degradation of sulphur-containing fungicides applied to grapes.
CAS registry number
The CAS registry number for dimethyl disulphide is 624-92-0.
Other names
  • DMDS
  • dimethyl disulfide
  • dimethyl disulfane
  • 2,3-dithiabutane
  • methyl disulfide
  • (methyl dithio) methane
  • methyl dithiomethane
  • methyldithiomethane
  • methyldisulfanylmethane
Remarks
Wines packaged in clear glass are most sensitive to formation of light-induced off-flavours such as dimethyl disulphide.
Threshold distribution
Graph
Capsules per pot
10
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