Chlorheme crystal and preparation method thereof

The invention relates to the technical field of heme extraction, and discloses a chlorhematin crystal and a preparation method thereof, the chlorhematin crystal is characterized in that the microscopic form of the crystal is a uniform rice-grain-shaped lamellar crystal, the crystal is expressed by a 2theta angle and interplanar spacing, and the crystal powder radiated by Cu-Kalpha is subjected to X-ray diffraction to obtain the chlorhematin crystal. The compound has the characteristic peaks at the following positions: 6.61 +/-0.02, 8.72 +/-0.02, 9.91 +/-0.02, 11.83 +/-0.02, 16.4 +/-0.02, 17.95 +/-0.02, 18.89 +/-0.02, 21.12 +/-0.02, 21.81 +/-0.02, and 24.25 +/-0.02. The compound has the characteristic peaks at the following positions: 6.61 +/-0.02, 8.72 +/-0.02, 9.91 +/-0.02, 11.83 +/ The preparation method comprises the following steps: performing enzymolysis separation on the protein peptide, preparing a heme crude product, purifying and precipitating the heme, and preparing the heme crystal. Compared with t