From the turmeric solution The color changes when added to a solution of heavy metals because. Turmeric solution in DBS Heavy metal ions in solution This is consistent with research
Turmeric that leaching nutrients The color changes when the heavy metal solution, but that solution turmeric polylactic with ion of heavy metals in aqueous solution, which correspond to your research.
The NaOH solution from the turmeric has a color change when filling the NaOH solution to the heavy metal compounds in turmeric dye because the complex of heavy metal ions in aqueous solution) which complies with the research.