How to keep the original color of plants when soaking specimens

The plant soaking specimen is to store fresh plant materials in the solution prepared by chemicals, so that the original color and shape of plants can be observed. The plant soaking specimen has a good preservation effect and a long preservation time, restoring the original bright color of plants. It has many advantages, and provides an essential scientific basis for plant research. How does the soaking specimen maintain the original color of plants?

The reason why plants are green is that chloroplasts of plants contain chlorophyll. Chlorophyll is a complex organic compound. There is a metal magnesium atom in the center of its molecular structure. The reason why chlorophyll is green is that it contains the core structure of magnesium atom.

If you want to keep the original green in plants, you need to replace magnesium ions in chlorophyll with copper ions. Its method is to use acid to separate magnesium from chlorophyll molecules. At this time, because chlorophyll lacks magnesium, the plant becomes brown. Then replace the core magnesium of chlorophyll molecule with copper. The structure of chlorophyll molecule with copper atom as the core is very stable, is not easy to decompose and destroy, and is not soluble in alcohol or formalin. Therefore, plant samples treated in this way can be preserved green for a long time in the preservation solution.