The degreening of "selayar" orange using ethephon: The color peel changes and ethephon residue

Abstract

Abstract The degreening technology using etilen to improve the colour of “Selayar” orange peel is impracticable to apply because this exists the gases form, so it can be substituted with working use Ethephon. Ethephon is more practical to use because this is a liquid. However, its use requirement prioritizes the principle of caution because it leaves residual. This study aimed to analyze the colour changes of the orange peel and Ethephon residues in degreening applications. This study used a completely randomized design with three concentration treatments, namely 0 ppm, 500 ppm, and 1000 ppm, with four repetitions. This research showed that the Ethephon in concentration 500 ppm was not significantly different from the 1000 ppm ethaphon treatment on fruit peels colour based on L *, a *, b *, colour index (CCI), and hue (h). Both concentrations exist to develop the orange peel colour, while the control fruits (0 ppm) are solely green on the 7th day of observation and greenish-yellow on the 14th day. Ethephon residue on orange fruit peels for 1000 ppm treatment approximately 0.30 ppm while at the group of 500 ppm ended 0.03 ppm. Degreening with ethaphon concentrations of 500 ppm and 1000 ppm has the identical ability to improve the peel colour of “Selayar” orange. The ethaphon residue in both concentrations (500 and 1000 ppm) is more moderate than the maximum admitted by the Indonesian government and Codex, namely 0.05 ppm.

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