Patents by Inventor Xuechang Wu

Xuechang Wu 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).

  • Yellow pigments generation deficient strain and application thereof in gellan gum production
    Patent number: 8685698
    Abstract: A yellow pigments generation deficient Sphingomonas strain (Sphingomonas sp. ZD001) and application thereof in preparing gellan gum by microbial fermentation are provided. The strain is preserved in China Center for Type Culture Collection (CCTCC) with the address of Wuhan University, Wuhan, 430072, China, the preservation date of the strain is 10 Sep. 2009, and the preservation serial number is CCTCC No: M 209298. The main beneficial effect of the present invention is that the fermented liquor contains no yellow pigments but is milky white, colorless superior gellan gum can be obtained by only depositing polysaccharide with a small quantity of ethanol or isopropanol, so that the post purification and de-coloration techniques of gellan gum production can be simplified, the yield can be enhanced, and the production cost can be reduced.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: April 1, 2014
    Assignees: Zhejiang University, Zhejiang DSM Zhongken Biotechnology Co., Ltd.
    Inventors: Xuechang Wu, Rongming Wu, Ou Li, Liang Zhu, Yamin Chen, Chaodong Qian, Mei Chen
  • Yellow Pigments Generation Deficient Sphingomonas Strain and Application Thereof in Gellan Gum Production
    Publication number: 20110281308
    Abstract: A yellow pigments generation deficient Sphingomonas strain (Sphingomonas sp. ZD001) and application thereof in preparing gellan gum by microbial fermentation are provided. The strain is preserved in China Center for Type Culture Collection (CCTCC) with the address of Wuhan University, Wuhan, 430072, China, the preservation date of the strain is 10 Sep. 2009, and the preservation serial number is CCTCC No: M 209298. The main beneficial effect of the present invention is that the fermented liquor contains no yellow pigments but is milky white, colorless superior gellan gum can be obtained by only depositing polysaccharide with a small quantity of ethanol or isopropanol, so that the post purification and de-coloration techniques of gellan gum production can be simplified, the yield can be enhanced, and the production cost can be reduced.
    Type: Application
    Filed: August 13, 2010
    Publication date: November 17, 2011
    Applicants: Zhejiang DSM Zhongken Biotechnology Co., Ltd., Zhejiang University
    Inventors: Xuechang Wu, Rongming Wu, Ou Li, Liang Zhu, Yamin Chen, Chaodong Qian, Mei Chen