Higher Residual Sugar
To rebuild body and mouthfeel after dealcoholization, many NA wines contain increased residual sugar, creating ideal conditions for microbial growth and potential re-fermentation.
Reduced Effectiveness of Traditional Preservatives
Controls such as sulfur dioxide, which are effective in traditional wines, may not provide sufficient protection on their own in low-alcohol environments.
Additional Processing Steps
Dealcoholization, blending, aroma re-addition, and increased handling introduce more opportunities for post-process contamination, particularly during filling operations.