2.7. Drip loss
Drip loss of the frozen samples (500 g) was evaluated after
water shift microwave thawing. Firstly, samples were weighed (W
0
)
and then thawed (approximately 60 s) using a microwave oven. The
water on the surface of litchi pericarp was then dried with a napkin.
In a room at 20
C, the thawed fruits were peeled and placed on a
clean desk allowing the juice to drip out naturally for 2 h. The
remaining juice on the surface of the pulp was wiped with a napkin.
Finally, the pulp (W
1
) was weighed and the drip loss was calculated.
Drip loss was defined as the percentage of the weight after drip loss
compared with the initial weight of unthawed samples.
Drip loss ¼½ðW
0
W
1
100%Þ
=
W
1
Each measurement was performed in triplicate.