Modern winemaking requires precision tools that respect the integrity of the grape. Our Fungal Chitosan for Wine offers a superior, non-animal alternative to traditional fining agents. Derived exclusively from Aspergillus niger, this high-purity biopolymer provides powerful stabilization and clarification without the risk of allergenic residues found in crustacean-based chitosan.
Stop Spoilage
Effectively removes Brettanomyces and other spoilage yeasts to protect sensory quality.
Prevent Oxidation
Chelates heavy metals (Iron/Copper) to prevent browning and preserve fresh aromatics
100% Vegan
Non-animal origin (Aspergillus niger) means no allergen labeling is required.
Why Choose Fungal Chitosan for Winemaking?
Unlike standard fining agents, fungal chitosan for wine acts as a versatile problem-solver in the cellar. It is the gold standard for enologists seeking to reduce sulfites and eliminate contaminants.
1. Control Brettanomyces & Volatile Phenols
The most critical application of vegan chitosan is Brettanomyces treatment. Its positive charge attracts and disrupts the cell membranes of spoilage yeasts like Brettanomyces bruxellensis. This significantly reduces viable yeast populations within days, preventing the production of volatile phenols (4-EP/4-EG) that cause “horse sweat” or medicinal off-flavors.
2. Oxidation Management for White & Rosé
For white and rosé wines, oxidation is a major threat. Vegan chitosan acts as a selective chelator for heavy metals—specifically Iron and Copper—which are the catalysts for oxidation cascades. By removing these pro-oxidant metals, you preserve fresh color and fruity aromatics, extending the shelf-life of your vintage.
Comparison: Fungal vs. Crustacean Chitosan
| Feature | Fungal Chitosan | Crustacean Chitosan |
| Origin | Aspergillus niger (Mushroom) | Shrimp/Crab Shells |
| Allergen Labeling | None Required | Mandatory “Contains Shellfish” |
| Vegan Status | Certified Vegan | Not Vegan |
| OIV Approval | Yes | Yes (Restricted in some markets) |
| Heavy Metals | Extremely Low | Variable / Higher |
Technical Specifications & Compliance
- Product Name: Fungal Chitosan
- Source: 100% Aspergillus niger (Non-GMO)
- Regulatory: complies with EU Regulation 53/2011.
- Solubility: High deacetylation degree for rapid dispersion in must or wine.
- Dosage: Refer to guidelines for specific treatment rates regarding Brettanomyces vs. Clarification.
Frequently Asked Questions
Is fungal chitosan allowed in organic winemaking?
Yes. Fungal chitosan derived from Aspergillus niger is authorized for use in organic winemaking under EU regulations and is widely accepted due to its non-GMO and non-animal origin.
Does fungal chitosan affect the taste of the wine?
No. When used at recommended dosage rates, fungal chitosan is insoluble and settles out of the wine after treatment. It respects the sensory profile of the wine while removing only the targeted contaminants (yeast or metals).
