muscles (Fig. 1B) showed a much more pronounced and more progressive peroxide formation over time at both storage temperatures. After 18 months of storage, a sharp increase of peroxides was observed with considerably higher levels attained in the samples stored at _20 _C compared with their counterparts stored at
_30 _C (p < 0.05). Hoki dark muscle stored at _20 _C showed a near linear increase of peroxides over the storage period (r = 0.87). The dark muscle of hoki proved to be much more prone to lipid oxidation when compared with its light muscle at both storage temperatures. This behaviour in frozen storage is similar to that obtained
from a fatty fish species (Undeland, Stading, & Lingnert, 1998).