The browning degree of banana peels was estimated using 2
methods. Firstly, the changes in RGB colour value were analysed
for each channel (R, G, and B). Secondly, the changes in the CIE L⁄-
a⁄b⁄ colour values were analysed using algorithms associated with
colour space conversion based on RGB colour space. The RGB value
represented red, green, and blue, and the CIE L⁄, a⁄, b⁄ value represented
lightness, redness, and yellowness, respectively. The colour
values ranged from 0 to 255.