Which naturally acidic produce items contain high levels of **citric acid** rather than relying on dissolved $ ext{CO}_2$ for their low $ ext{pH}$?
Answer
Oranges, lemons, limes, and grapefruit.
Foods that possess an inherent low $ ext{pH}$ due to their natural composition rely on organic acids intrinsic to their structure, making them distinct from carbonic acid sources. Citrus fruits such as oranges, lemons, limes, and grapefruit are prime examples, as they contain significant amounts of citric acid. This acidity is a permanent feature of the fruit derived from its biological processes, not a transient chemical reaction involving dissolved gas and water like the formation of carbonic acid in sparkling drinks. This distinction is important when evaluating overall dietary acidity, as these organic acids do not rely on carbonation for their acidic contribution.
Related Questions
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