English to Spanish Science Biology (-tech,-chem,micro-) biochemistry

Saludos
El término pH stat parece que es utilizado en diferentes contextos. Para conocer la traducción apropiada. Nuevamente de antemano gracias.

Why revision of the biochemical pH-stat is required?
—This classic biochemical pH-stat hypothesis (Davies
1973, 1986) together with the biophysical pH-stat hypothesis
(Smith and Raven 1979) has been widely accepted, because
it explained satisfactorily the changes in endogenous
malate level in response to experimental treatments that
were expected to cause cytoplasmic pH shifts (Haschke and
Liittge 1975, Johnson and Rayle 197

In principle, different rates in the cation-anion uptake ratio by roots are an important
cause for intracellular pH perturbations. The stabilization of cytosolic pH in the range
7.3-7.6 (Section 2.4.2) is achieved by the so-called pH stat which consists of two
components, the biophysical pH stat, characterized by proton exchange through the
plasma membrane or tonoplast (Fig. 2.9), and the biochemical pH stat which mainly
involves production and consumption of protons, achieved by the formation and
removal of carboxylic groups (Davies, 1986; Raven, 1986)...