Patents by Inventor Yunfa Dai

Yunfa Dai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR PRODUCING ASTAXANTHIN BY HETEROTROPHIC CULTURE OF HAEMATOCOCCUS PLUVIALIS
    Publication number: 20220356504
    Abstract: Provided is a method for producing astaxanthin, comprising: (a) performing heterotrophic cultivation of astaxanthin-producing Haematococcus pluvialis; (b) performing heterotrophic cultivation of the Haematococcus pluvialis obtained in step (a) under conditions of high acetate concentration and high dissolved oxygen concentration, where the acetate concentration is at least 1800 mg/L and the dissolved oxygen concentration is at least 2.0 mg/L; and (c) collecting algae cells from step (b) and/or harvesting astaxanthin. Also provided is a base medium for culturing Haematococcus pluvialis, a propagation feed medium, and an induction feed medium.
    Type: Application
    Filed: September 22, 2020
    Publication date: November 10, 2022
    Inventors: Yubin Zheng, Shuaishuai Liu, Peixin Cao, Yunfa Dai, Shiyi Xie