Str8V8ping,
You are inadvertently referring to the flavor perception of these acids. This is how we perceive the taste of these acids when we consume them. Once the pH is changed it will stay changed unless some chemical or bacterial reaction is happening in the
juice.
Pete
you are right , Heres what i meant.
Another aspect of sourness that is important in product formulation is the persistence of
sourness.
Organic acids that are more hydrophilic (as evidenced by their partition coefficients) have a
sourness sensation that dissipates quickly while less hydrophilic acids are more persistent.
Citric Acid, for example, provides a clean, bright, refreshing sensation because its sourness
dissipates quickly. For this reason, Citric Acid is the primary acidulant in most beverages. The
sourness of Tartaric Acid also dissipates quickly.
Acetic, Fumaric, Lactic, and Malic Acids are less hydrophilic than Citric Acid and are more
enduring. Sweetness and sourness are balanced
throughout the taste experience by using
persistent acidulants with high intensity persistent sweeteners such as aspartame and
sucralose. Malic Acid complements aspartame very well it boosts the impact of aspartame
to the point that a 10% reduction in aspartame can be made when using Malic Acid as the
acidulant.