Patents by Inventor Baoyi Yang

Baoyi Yang 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 post-extracting low acyl gellan gum
    Patent number: 8609377
    Abstract: The present invention relates to a post extraction process for preparing low acyl gellan, comprising the steps: deacylation treatment of gellan gum-containing fermentation broth, enzyme treatment, flocculation of low acyl gellan gum with divalent or polyvalent metal cations, clarification treatment of gellan gum solution, dehydration treatment of gellan gum solution, removal of divalent or polyvalent cations and decoloration, and drying and milling. Preferably, the process comprises the step of formulating a proper amount of chelating agent/acid system before the drying and milling step to chelate the added additional divalent cations added during the use of gellan gum, and at the same time to keep the pH value in a relatively stable condition. The present invention also provides the various low acyl gellan gums prepared by the above methods. The product has the following characteristics: a good appearance, a high transmittancy, and high gel strength.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: December 17, 2013
    Assignee: Zhejiang DSM Zhongken Biotechnology Co., Ltd.
    Inventors: Baoyi Yang, Binghua Wu, Huaiyuan Xu, Zhengxue Zhu, Yubin Shen, Xuegang Wang, Liqiang Yang, Jialiang Wang, Wenhui Jiang, Shengqiang Bao, Xiaolin Sheng, Xiaoqin Shen
  • Method for Post-Extracting Low Acyl Gellan Gum
    Publication number: 20110281307
    Abstract: The present invention relates to a post extraction process for preparing low acyl gellan, comprising the steps: deacylation treatment of gellan gum-containing fermentation broth, enzyme treatment, flocculation of low acyl gellan gum with divalent or polyvalent metal cations, clarification treatment of gellan gum solution, dehydration treatment of gellan gum solution, removal of divalent or polyvalent cations and decoloration, and drying and milling. Preferably, the process comprises the step of formulating a proper amount of chelating agent/acid system before the drying and milling step to chelate the added additional divalent cations added during the use of gellan gum, and at the same time to keep the pH value in a relatively stable condition. The present invention also provides the various low acyl gellan gums prepared by the above methods. The product has the following characteristics: a good appearance, a high transmittancy, and high gel strength.
    Type: Application
    Filed: June 2, 2010
    Publication date: November 17, 2011
    Applicant: Zhejiang DSM Zhongken Biotechnology Co., Ltd.
    Inventors: Baoyi Yang, Binghua Wu, Huaiyuan Xu, Zhengxue Zhu, Yubin Shen, Xuegang Wang, Liqiang Yang, Jialiang Wang, Wenhui Jiang, Shengqiang Bao, Xiaolin Sheng, Xiaoqin Shen