Patents by Inventor Zhengming Zhu

Zhengming Zhu 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).

  • Mutant strain of and its application
    Patent number: 10638771
    Abstract: The present invention relates to a mutant strain of Lactococcus lactis and its application, and belongs to the field of food biotechnology. The mutant strain, Lactococcus lactis WH101, was screened for its better tolerance to harsh environmental factors, especially higher acid tolerance. The OD600 of Lactococcus lactis WH101 was increased by 5.5 times than that of the parent strain when cultured at pH 4.5. The survival rate of the mutant strain was 22.4 times higher than that of the parent strain after 3 hr treatment in pH 4.0 culture medium. The survival rate of the mutant strain was 5.2, 2.0 and 1.9 times over that of the parent strain treated with 15% ethanol for 4 hr, 15% NaCl for 6 hr and 1 mM H2O2 for 3 hr, respectively.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: May 5, 2020
    Assignee: Jiangnan University
    Inventors: Juan Zhang, Zhengming Zhu, Jian Chen, Guocheng Du, Peishan Yang
  • Mutant strain of Lactococcus lactis and its application
    Publication number: 20180042251
    Abstract: The present invention relates to a mutant strain of Lactococcus lactis and its application, and belongs to the field of food biotechnology. The mutant strain, Lactococcus lactis WH101, was screened for its better tolerance to harsh environmental factors, especially higher acid tolerance. The OD600 of Lactococcus lactis WH101 was increased by 5.5 times than that of the parent strain when cultured at pH 4.5. The survival rate of the mutant strain was 22.4 times higher than that of the parent strain after 3 hr treatment in pH 4.0 culture medium. The survival rate of the mutant strain was 5.2, 2.0 and 1.9 times over that of the parent strain treated with 15% ethanol for 4 hr, 15% NaCl for 6 hr and 1 mM H2O2 for 3 hr, respectively.
    Type: Application
    Filed: July 3, 2017
    Publication date: February 15, 2018
    Applicant: Jiangnan University
    Inventors: Juan Zhang, Zhengming Zhu, Jian Chen, Guocheng Du, Peishan Yang