Abstract
The isolation of high-purity chlorophyll a was achieved by HPLC using a micro-preparative column with a diol-phase (Polyol, Si 100, 5 μm) in normal-phase mode. The procedure included the extraction of photosynthetic pigments from the leaves of stinging nettles and their partial purification as dioxane-water-chlorophyll-aggregates prior to the isolation by micro-preparative HPLC. Freeze-drying resulted in a flaky chlorophyll a, which was free of water. Each step of isolation was controlled by using an analytical HPLC-column with a diol-phase and a photodiode array detector. Synthesized metalloporphyrins (metal(II)-ion = Mg2+, Zn2+, Cu2+, Ni2+) with structures analogous to chlorophyll were also isolated by means of the micro-preparative HPLC-column containing a diol-phase. The purity of the obtained porphyrins was monitored with an analytical HPLC-column.
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Drexler, D., Ballschmiter, K. Separation of chlorophyll a and metalloporphyrins by HPLC in normal-phase mode using a diol-phase. Fresenius J Anal Chem 348, 590–594 (1994). https://doi.org/10.1007/BF00323938
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DOI: https://doi.org/10.1007/BF00323938