high orange essential oil concentration can protect
the moisture loss from cake, thus provide the best
cake texture. Cake wrapped in chitosan film
containing orange essential oil are still acceptable in
all attributes until this day.
2.5 Shelf Life of Cake
Orange flavored butter cake were stored at
25°C for 10 days. The apperance of mold was
.
used to judge the storage life of the cake. Mold
incidents were observed on cake wrapped by
stretch film on day 3, resulted in 2 days storage life.
Orange flavored butter cake wrapped by chitosan
film, chitosan film incorporating 0.7% and 1.4%
orange essential oil had storage life for 4,7 and more
than 10 days, respectively (Figure 7).