Stability studies of chlorophyll a using different storage systems

Abstract

The stability of chlorophyll a dissolved in acetone has been monitored using electronic absorption spectroscopy. Analysis of the molar absorption coefficients at 665 nm reveals that there is no significant difference when the solutions are kept for 84 d in the dark both in the refrigerator and at room temperature. Simple statistics are employed to compare the values of absorption coefficients at different times and show that all measurements are consistent with a single population, demonstrating that chlorophyll a is stable in solution in acetone over a lengthy time at room temperature in the dark.