2.1. Sample collection
Fresh firmly ripe banana, pineapple, and apple fruits and the
lemon used as a preservative and to reduce browning, in this
study were obtained from Umuahia main market, Umuahia,
Abia State, Nigeria. Fruit leather preparation was carried out
at the food processing laboratory of Food Science and
Technology Department, Michael Okpara University of Agriculture,
Umudike Umuahia, Abia State, Nigeria.