of capillary holes and voids. Thus, oil adheres to the
surfaces of the chips and is also absorbed into the
pores or the voids in the porous slices. This is proved
by data in Figure 1 and Figure 2. The control banana
chips has the highest moisture content before and
after frying (44.56% and 5.95 % respectively) has the
highest fat content which is 0.66%. The relationship
of oil uptake and moisture loss of the fried banana
chips has been investigated by Southern, C. et al.,
(2000). The sugar dipped chips has much lower oil
content than control samples. It was found that the
sweet pre-treatment before frying is important in
reducing the oil content in the chips.
Colour analysis
Next, for colour analysis, all fried banana chips
were analyzed using chromameter to obtain the
value of L*
, a*
and b*
. Data from chromameter was
interpreted using ANOVA to determine is there any
significant difference in colour between the four fried
banana chips. The alpha value is set at 0.05. If the
p-value is less than or equal to the alpha then the
null hypothesis is rejected and there is a significant
difference in colour between the four banana chip
samples. All banana chips samples has < 50 for
L*
value thus this indicates all samples are dark.
For b*
scale, a positive value indicates yellow and a
negative value indicates blue and from the analysis,
all samples have positive values for b*
and indicates
all banana chips have yellow color. The p-value for
lightness (L*
) is 0.426 and the p-value for yellowness
(b*
) is 0.468. This shows that the null hypothesis was
accepted and there was no significant difference in
lightness and yellowness of all four fried banana
chips.
Sensory evaluation
Sensory evaluation is a scientific discipline
that analyses and measures human responses to the
composition of food and drink, e.g. appearance, touch,