To have an insight of the major structures of kiwifruit paren-
chyma tissue, and their modifications due to OD, proton transverse
relaxation time spectra were considered first. The T2of the protons
located in the parenchyma of a fruit is mainly determined by the
chemical exchange among water and biopolymers (and solutes),
with a T2of 1.5 s and microseconds respectively, and by the diffu-
sion through locally generated magnetic field inhomogeneities
(Hills & Duce, 1990). Some of the compartments characterising a
cell, with different composition, showed a different chemical