Extraferm D'fend

Extraferm D’fend

Yeast derivatives with strong antioxidant properties.

Pack sizes: 1 kg · 10 kg

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A protective yeast derivative that ensures the wine's oxidative stability.

Purpose

Extraferm® D’fend is a yeast derivative selected in collaboration with the Jules Guyot Institute of Vine and Wine (IUVV) in Dijon, France. The joint work revealed its antioxidant properties, due to a soluble nucleophilic fraction. Wines thus keep their fruit character and freshness over time; aromas are clean and the palate round and full.

Science and technology

Protection against oxidation. Extraferm D’fend preserves the freshness and fruit character of wines without oxidative or reductive notes, as shown in the Verdejo trial (figure 1).

The wine with Extraferm D’fend is significantly fruitier and less reductive. There is also a trend towards higher aromatic intensity and better mouthfeel 14 months after addition.

Фигура 1. Вино от Verdejo, Испания, без и с Extraferm D’fend при 20 g/hL. Дегустация (11 експерти) след 12 месеца в бутилка. ***p < 0,005 и *p < 0,15.
Figure 1. Verdejo wine, Spain, without and with Extraferm D’fend at 20 g/hL. Tasting (11 experts) after 12 months in bottle. ***p < 0.005 and *p < 0.15.

Before dealcoholisation, using Extraferm D’fend during ageing on fine lees improves mouthfeel (body and roundness) (figure 2).

Фигура 2. Сензорно класиране на деалкохолизирани до 0 % вина от Chardonnay, отлежали 2 месеца при 15 °C с и без Extraferm D’fend (20 g/hL, добавени в края на алкохолната ферментация върху 2 % фини утайки).
Figure 2. Sensory ranking of Chardonnay wines dealcoholised to 0%, aged 2 months at 15 °C with and without Extraferm D’fend (20 g/hL, added at the end of alcoholic fermentation on 2% fine lees).

Properties

Extraferm D’fend:

  • protects wines low in SO2 or without SO2;
  • has an immediate and long-lasting protective effect during ageing;
  • gives roundness, clean and persistent aromas and a fuller body;
  • restores freshness and fruit character to tired wines;
  • improves mouthfeel in low- and no-alcohol wines.

Easy to use. Oenobrands products are made from yeast derivatives selected and dried using exclusive technology. This ensures rapid dispersion without lumps.

Composition

A unique blend of yeast derivatives (S. cerevisiae), rich in antioxidant nucleophilic compounds:

  • inactivated yeast: 80%;
  • autolysed yeast: 20%.

Dosage

Protecting wines from oxidation. Dose: 10–30 g/hL. Added to the must and/or at the end of alcoholic fermentation. Bottle at least 1 month after addition.

Refreshing tired still wines. Dose: white and rosé wines – 10 g/hL; red wines – 3–5 g/hL. Added to the wine. Bottle at least 1 month after addition.

Restoring body and adding roundness in low- and no-alcohol wines. Dose: 20 g/hL. Added at the end of alcoholic fermentation on fine lees. Contact time: at least 2 months.

Use

Suspend Extraferm D’fend in 10 times its weight of water or wine.

Extraferm D’fend acts immediately. The recommended time before bottling is only to let insoluble particles settle and facilitate final filtration.

Packaging and storage

Pack sizes: 1 kg (hermetically sealed multi-layer laminated bags) · 10 kg (aluminium bag in a carton). Store in a cool, dry place (5–15 °C).

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