Even though the higher speed for oil centrifugation in the vacuum
frying process reduced the oil absorption of the banana chips,
it did not provide any significant improvement compared to the
use of the guar gum coating alone or the combination of the guar
gum coating and the high speed process, which reached an oil
absorption reduction of 33.71%. This indicated that the guar gum
could substitute for the application of the high speed process in
the production of banana chips. Probably, the oil was trapped inside
the voids of the banana slices, making it difficult to be totally
centrifuged out of the fried product, even at high speed. However,
the application of a coating could help to fill up or cover the surface
of the banana slice and thus prevent oil absorption into the product
and the excess oil on the surface of fried product could then be removed
with a higher centrifugation speed.