What substance is responsible for the tart flavor and inherent acidity of kaffir lime juice?
Answer
Citric acid
The tart flavor and inherent acidity of kaffir lime juice stem directly from the presence of citric acid. This organic acid is characteristic of many citrus fruits, including Persian limes and lemons. The high concentration of citric acid is what dictates the low pH level, often falling between 2.0 and 3.0, which is the primary driver behind concerns related to gastrointestinal distress and the chemical attack on tooth enamel. While the zest and leaves contain other bioactive compounds like flavonoids, it is the citric acid content in the juice that necessitates caution regarding consumption amounts and frequency due to its corrosive nature.
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