Which process helps in measuring the proportion of acidic content in food?

The process that helps in measuring the proportion of acidic content in food is pH analysis. This method involves using a pH meter or pH indicator to determine the acidity or alkalinity of a substance. The pH scale ranges from 0 to 14, with values below 7 indicating acidity, values above 7 indicating alkalinity, and a value of 7 considered neutral. By measuring the pH level of food, one can assess its acidic content, which is crucial for both food preservation and quality control, as well as understanding its flavor profile and safety for consumption.

Boiling, freezing, and fermentation are processes that do not directly measure acidic content; instead, they involve physical changes or biological processes without providing a quantitative analysis of pH levels.