Vol. 4, Issue 6 (2019)
Effects of packaging materials on weight loss, moisture content and quality of wheat flour infested by Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)
Author(s): Alamuoye Nathaniel O
Abstract: The study investigated the effects of packaging materials on the storage losses of wheat flour due to infestation by Tribolium casterneum with a view to ensuring good storage and consumption of quality wheat flour. The ability of seven packaging materials: black low density polythene bag (10µm), white low density polythene bag (10µm and 20µm), blue high density polythene bag (25µm), brown paper bag (70g), white paper bag (80g) and laminated film (10µm) to control weight loss, moisture content and quality changes such as colour and fungal growth were evaluated for the period of 91 days under infestation with Tribolium casterneum. Laminated plastic (10µm) and white paper bag (80g) controlled all the defects assessed. Highest weight loss (22.67%) was recorded in black low density polythene (10µm) followed by white low density polythene (10µm) (13.80%). Blue high density polythene (25µm) allowed the highest gain in moisture content while caking, colour change and fungal growth were observed with white low density polythene (20µm) and blue high density polythene (25µm).