Pigment and production thereof
专利汇可以提供Pigment and production thereof专利检索，专利查询，专利分析的服务。并且PURPOSE: A blue algae in Tricodesmium or Richelia of Oscillatorilales is suspended in water to infuse the pigment and the pigment is concentrated and dried whereby a natural pigment of purple which has constant properties and to toxicity to humans and animals is obtained stably in a large amount.
CONSTITUTION: A blue algae in Tricodesmium, Pelagothrix or Richelia of Oscillatorilales is artificially cultured on a large scale. The algae or the like is suspended in a buffer solution of 4W7pH, for example, 10g of the algae are suspended in 150ml of a citrate or phosphate buffer solution. The suspension is kept at 0W40°C for more than 10min to effect pigment extraction. The extraction mixture is centrifuged into the precipitate of the algae and the extract. Ammonium sulfate or the like is added to the extract to salt out the pigment and the precipitate is dissolved in water to form a solution. Then, the solution is concentrated by dialysis or condensation with a cellophane membrane, then freeze-dried or spray-dried to obtain a purple pigment powder.
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