Impacts of Temperature on the Stability of Tropical Plant Pigments as Sensitizers for Dye Sensitized Solar Cells

Table 3

Kinetic parameters of anthocyanin degradation in M. malabathricum fruit pulp, H. rosa-sinensis flowers, and C. variegatum leaves at three different storage temperatures.

Species	Original pH	Temp./°C	𝑘/10^−3 (day^−1)	𝑡1/2 (day)
Melastoma  malabathricum	pH 5.23	25	6.261	110.71
		4	1.282	540.77
		−20	1.286	539.13
Hibiscus rosa-sinensis	pH 5.73	25	3.154	219.74
		4	1.34	571.19
		−20	2.061	336.37
Codiaeumvariegatum	pH 5.93	25	2.726	254.25
		4	1.964	352.86
		−20	1.708	405.72