METHOD USING MICROALGAE FOR HIGH-EFFICIENCY PRODUCTION OF ASTAXANTHIN

摘要

The present invention relates to a novel method for producing astaxanthin by using microalgae. The method comprises: heterotrophic cultivation of microalgae, dilution, photo-induction, collection of microalgal cells, and extraction of astaxanthin. The method according to the present invention takes full advantages of rapid growth rate in the heterotrophic stage and fast accumulation of astaxanthin in the photo-induction stage by using a large amount of microalgal cells obtained in the heterotrophic cultivation stage, so as to greatly improve the astaxanthin production rate and thereby achieve low cost, high efficiency, large scale production of astaxanthin by using microalgae. The method not only provides an important technical means to address the large scale industrial production of astaxanthin through microalgae but also ensures an ample source of raw material for the widespread utilization of astaxanthin.

主权项

1. A method for producing astaxanthin or increasing astaxanthin content in a microalgae, comprising:
(1) heterotrophically cultivating the microalgae; and (2) obtaining and diluting a heterotrophic culture of the microalgae and then adding a photo-induction medium into the heterotrophic culture of the microalgae for photo-induction; or directly photo-inducing the obtained heterotrophic culture of the microalgae; so as to produce astaxanthin or increase astaxanthin content in the microalgae.