Stability of Natural Dye Extract of Globe Amaranth (Gomphrena globosa L.) During Storage at Light Intensity Treatment

Abstract

The betacyanin content of the globe amaranth extract is unstable on storage due to temperature, pH, light  intensity and oxidizing factors. The objectives of this study were (1) to know the effect light intensity on the  stability of the globe amaranth extract during storage, and (2) to determine the light intensity treatment that  can maintain the best stability of the globe amaranth extract during storage. This study used a simple  completely randomized design with light intensity treatment consisting of 5 levels, namely 200 lumens, 350  lumens, 540 lumens. 720 lumens and 1055 lumens. Each treatment was carried out 3 times so that there were  15 experimental units. The results showed that the light intensity treatment had an effect on the stability of the  betacyanin content of the globe amaranth extract during storage. Light intensity treatment of 200 lumens is a treatment that can maintain the stability of the globe amaranth extract with the smallest percentage reduction  in total betacyanin content of 46.07% for 4 weeks of storage