2.1. Banana peels extract (BPE) powder preparation
Banana peels (Musa paradisiaca) were obtained, washed and
boiled in distilled water for 30 min at 90 ◦C. Such peels (100 g) were
crushed in 100 mlof distilled water and the extract thus formed was
filtered through a cheese cloth. This filtrate was treated with equal
volumes of chilled acetone and the resultant precipitate was centrifuged
at 1000rpm for 5min. This was air-dried into a powder
and used for further experiments.