“A closure is not the end of the bottle – it’s the beginning of wine’s journey through time.”
Choosing the right closure is a strategic decision for wineries. It influences freshness, color, aroma—and ultimately, how consumers perceive your product.
A recent independent study* published in BIO Web of Conferences evaluated eight different closure types (including screw caps with various barrier liners) and their impact on red wine over 538 days of storage. Here’s what truly matters for producers:
1. Oxygen Control & Sulfur Dioxide (SO₂) Preservation
- Closures with low oxygen transmission rate (OTR), particularly those using PVDC barrier liners, preserved up to 30 mg/L of free SO₂ after 538 days.
- In contrast, high OTR closures showed a drop below 15 mg/L, increasing oxidation risk.
Artemis Closures’ Eno Classic+, Eno Max, and Eno Max+ are designed to work with advanced barrier liners to support optimal SO₂ stability.
2. Color Stability
- Color was analyzed using light absorbance at 420 nm (browning) and 520 nm (red pigment retention).
- Low-OTR closures preserved vibrancy, while higher-OTR options led to visible browning.
Our aluminum screw caps and decorative shrink capsules are crafted to protect both product quality and shelf appeal.
3. Sensory Profile & Flavor Retention
After 17 months:
- Wines with low-OTR closures were described as fruit-forward, fresh, and balanced.
- Wines with high OTR closures exhibited oxidative notes and faded aromas.
Our closures are compatible with EPE, PVDC, and EVOH liners and can be customized with hot foil, embossing, or silk screen printing.
4. Sustainability & CO₂ Retention
The study also measured CO₂ evolution:
- Low-OTR closures helped preserve carbon stability, especially important for wines with residual gas.
Artemis Closures is committed to sustainability, with recyclable PET capsules, aluminum from recycled sources, and solar-powered production.
What This Means for Wineries
Closures are not just a technical necessity—they directly influence how your wine matures, performs, and is perceived on the market.
By choosing Artemis Closures, you gain:
- Proven, science-backed barrier technology
- Sustainable production and materials
- Flexibility in design and decoration
- Short lead times and technical support
Let’s talk about the best closure for your wine.
Request a sample, get technical guidance, or ask about custom designs:
sales@artemisclosures.comwww.artemisclosures.com
Source: BIO Web of Conferences 56, 03008 (2023) — “Comparison of the effect of 8 closures in controlled industrial conditions” by A. Jourdes et al.
