Interactions (P < 0.05) between the packaging method storage
time (Fig. 2a) and additives x storage time were observed for L⁄ values.
In air-packaged samples, lightness was increasing until day 40
of storage, and then it remained at a stable level. In vacuum-packaged
samples, L⁄ values decreased significantly after 10 days of
storage, and displayed a rising trend at a later stage.