Curcumin and PLA-curcumin coating's chromaticity and colour stability in reaction to the effectiveness of pH

Mohd Latiff, Nur Hanie and Abu Bakar, Ainaa Eliah and Othman, Rashidi and Mohd Hatta, Farah Ayuni and Ramya, Razanah and Wan Sulaiman, Wan Syibrah Hanisah (2023) Curcumin and PLA-curcumin coating's chromaticity and colour stability in reaction to the effectiveness of pH. In: International Halal Science Conference 2023 (IHASC23), 22nd-23rd August 2023, Kuala Lumpur.

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Abstract

Understanding the limitations and unfavourable conditions of curcumin would be an advantage to increase the stability of the pigment. Therefore, the ultimate objective of this research is to evaluate the effects of pH on chromaticity and stability of curcumin and PLA-curcumin extracted from Curcuma longa (turmeric), as a potential natural source for coating. Overall, the dark condition was preferable and stable for the curcumin brightness and slower the degradation percentage. Dark 19 condition exhibited a better and stable colour degradation (approximately 40%) in all curcumin concentrations (1 mg/ml, 2 mg/ml and 3 mg/ml) as compared to light condition with 89.92%, 85.79% 21 and 60.90%, respectively. PLA alone showed the highest chroma (C*) value at 3.08% in dark condition, which was slightly higher than in light condition (2.87%). The highest C* values were achieved in curcumin set with lower pH (pH 3, 5 and 7) and the lowest at higher pH (pH 9 and 11) in both light and dark conditions. However, all PLA-curcumin showed colour stability in both acidic (pH 3 and 5) and basic (pH 9 and 11) in dark condition only.

Item Type:	Proceeding Paper (Plenary Papers)
Additional Information:	9386/106964
Uncontrolled Keywords:	Curcumin, PLA-curcumin, pH, Chromaticity, Colour stability, natural pigment
Subjects:	BPH Islamic Economics > BPH114.3 Halal industry science BPH Islamic Economics > BPH117.5 Halal Education, Halal Training BPH Islamic Economics > BPH122 Consumption. Halal issues. Specific products. Food and drink BPN Islamic art and architecture > BPN87 Muslim friendly and halal services H Social Sciences > HD Industries. Land use. Labor > HD9016.5 Halal Science T Technology > TP Chemical technology > TP372.6 Halal food industry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART) Kulliyyah of Architecture and Environmental Design Kulliyyah of Architecture and Environmental Design > Department of Landscape Architecture
Depositing User:	DR NUR HANIE MOHD LATIFF
Date Deposited:	11 Jan 2024 10:26
Last Modified:	11 Jan 2024 10:26
URI:	http://irep.iium.edu.my/id/eprint/106964

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