Abstract
Rapid monitoring of alcoholic fermentation progress is important for maintaining batch consistency, detecting sluggish fermentation, reducing production delays, and improving process control. This study evaluates rapid analytical indicators for tracking alcoholic fermentation in brewing systems. Controlled fermentations were monitored using specific gravity, pH, dissolved carbon dioxide, ethanol concentration, yeast cell density, temperature change, conductivity, and optical turbidity. These indicators were compared with sugar consumption and attenuation profiles across fermentation stages. The results show that specific gravity decline remained the most practical indicator of fermentation progress, while pH reduction and carbon dioxide evolution provided early evidence of yeast activity. Conductivity and turbidity reflected yeast growth and sedimentation but required interpretation with supporting data. Combined indicator tracking improved the detection of abnormal fermentation behavior. The study demonstrates that rapid fermentation monitoring is most reliable when simple analytical measurements are integrated into a process profile rather than interpreted separately.