Does pH go down during fermentation? The science behind it
                                
                                
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                                    4 min read                                
                            
                                Over 13,000 years ago, ancient civilizations were already using fermentation to preserve food. The short answer is yes, pH does go down during fermentation due to the metabolic activity of microorganisms like yeast and bacteria. This drop in acidity is a fundamental and critical aspect of the fermentation process, impacting everything from food safety to flavor development.