Extraferm D’fend
PROTECTIVE YEAST DERIVATE THAT ENSURES OXIDATIVE STABILITY OF WINE
PURPOSE
Extraferm® D’fend is a yeast derivate selected in collaboration with the Institut Universitaire de la Vigne et du Vin Jules Guyot (IUVV) at Dijon, France. The work in partnership with IUVV revealed the antioxidant properties of this yeast derivate, due to the presence of a soluble nucleophilic fraction. Fruit and freshness in wines are thus preserved over time; the aromas are clean, and the palate is round and full.
Properties
Extraferm D’fend:
- Protects white and rosé wines from oxidation.
- Offers an immediate and long-lasting protection during wine ageing.
- Gives roundness to wines, clean aromas, and a persistent, full-bodied palate.
- Prevents oxidation of low or no SO2 wines.
Oenobrands products are made from yeast derivates selected and dried using exclusive technology. This ensures their great ability to disperse quickly and without forming lumps.
Science and Technology
Protection from oxidation
Extraferm D’fend preserves the freshness and fruitiness of wines without oxidative or reductive notes, as shown by the trial with Chardonnay.
Ensuring oxidative stability
The progress of wine oxidation was monitored by measuring the concentration of aldehyde markers of oxidation. The example of organic Chardonnay vinified without SO2 addition illustrates the ability of Extraferm D’fend to limit the formation of these aldehydes and hence to preserve the organoleptic qualities of the finished wine.
DOWNLOAD THE APPLICATION DATA SHEET
Dosage
Dose: 20 to 30 g/hL
Usage
Extraferm D’fend should be added to the must and/or at the end of AF or into wine during storage. Avoid adding just before filtration.
Before addition, prepare a suspension of Extraferm D’fend in 10 times its weight of water / wine.
Composition
Unique blend of yeast (S. cerevisiae) derivates, rich in antioxidant nucleophilic compounds:
- inactivated yeast: 80%
- autolysed yeast: 20%.
Packaging
– 1 Kg: hermetically sealed, multilayer laminated bags
– 10 Kg: aluminium bag in cardboard box
Storage
Stored in a cool, dry place (5-15 °C – 41-60 °F).
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