Abstract
The pH value of the sample shifts from the original value, as the amount of water added to the material at homogenization is increased or as the time elapses after the process. Either to keep the fresh material refregerated till homogenization, or to saturate the homogenized juice with toluol are good measures for preventing changes in the pH value. Anyhow, the pH-measurement should be made under a definite concentration of the juice and within a definite period after homogenization.
