Vol. 12, Issue 10 (2023)

Author(s):
Miter Game, Dr. Rokolhuii Keditsu and Phairohlui

Abstract:
An experiment was conducted to evaluate the effect of different edible dyes on the post-harvest quality of tuberose (Polianthes tuberosa L.) spike. The experiment was carried out using two factorial completely randomized design with three replications. Three cut spikes were placed in four different dye solutions (Sunset Yellow, Carmosine, Brilliant Blue and Tartrazine) at three different concentrations (1%, 1.5% and 2%) for 24 hours. The different edible dyes had a significant effect on the sensory characters, fresh weight, water relations, floret opening percentage, days to 1^st and 3^rd floret wilting and vase life of the tinted spikes. The maximum score for the sensory characters was obtained in Brilliant Blue (D3) with best results in water relation. Brilliant Blue (D3) dye exhibited the highest floret opening percentage of 51.68 and maximum days (5.77 and 6.07) to 1st and 3rd floret wilting and the longest (10 days) vase life. The various concentrations used had a significant effect only on floret opening % and days to 3^rd floret wilting of the tinted spike. The maximum floret opening of 50.66% and days (6.18) to 3rd floret wilting was observed in C3 (2%).