Colour properties of poly(vinyl alcohol)–anthocyanin blends

被引：0
|
作者：
N. Aziz
N. A. Mat Nor
A. F. Mohd-Adnan
R. M. Taha
A. K. Arof
机构：
[1] University of Malaya,Centre for Ionics University of Malaya, Department of Physics, Faculty of Science
[2] University of Malaya,Institute of Biological Sciences, Faculty of Sciences
来源：
Optical and Quantum Electronics | 2016年 / 48卷
关键词：
Anthocyanin; Colour stability; Polyvinyl alcohol (PVA); Ferulic acid (FA);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This work aims to analyze the colour variation and stability of anthocyanin colourant. Anthocyanin has been solvent-extracted from fruit pulps of Melastoma malabathricum. Different weight percentage of ferulic acid (FA) have been added to the anthocyanin solution and exposed to 17.55 lux UV-B irradiation for 93 days. The colour stability has been evaluated using Commission Internationale de l’Eclairage (CIE) colour system. The FA has been added to anthocyanin solution that contains .5 % trifluoroacetic acid (TFA) has been mixed with poly (vinyl alcohol) or PVA for the development of a coating system. The PVA–anthocyanin coating without FA has the most unstable colour. Coating with 3 % FA addition resulted in better colour stability. Colour stability has been analysed via lightness (L*), chromaticity(c*), hue angle (H°), coordinates a* and b* as well as colour saturation.
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