Patents by Inventor Yingjie Zeng

Yingjie Zeng 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).

  • endophytic fungus strain and extracellular polysaccharide produced thereby, and extraction method and application of extracellular polysaccharide
    Patent number: 11459593
    Abstract: The present invention provides a Dendrobium officinale (D. officinale) endophytic fungus strain and an extracellular polysaccharide produced thereby as well as an extraction method and application of the extracellular polysaccharide. The extraction process of the extracellular polysaccharide includes: activating a strain; culturing seed liquid; fermenting and culturing; filtering the fermented liquid under vacuum; concentrated the filtrate under vacuum; conducting alcohol precipitation on the concentrated liquid; precipitating and centrifuging; dialyzing after dissolving the precipitates in water; freezing and drying the dialysate under vacuum; and obtaining the extracellular polysaccharide. The D. officinale endophytic fungus strain belongs to Fusarium solani, and the extracellular polysaccharide produced thereby has inhibitory effects on Escherichia coli, Staphylococcus aureus, Salmonella ssp., and Bacillus subtilis.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: October 4, 2022
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Wenyong Lou, Yingjie Zeng, Hongfeng Wang, Minhua Zong, Jing Liang
  • DENDROBIUM OFFICINALE ENDOPHYTIC FUNGUS STRAIN AND EXTRACELLULAR POLYSACCHARIDE PRODUCED THEREBY, AND EXTRACTION METHOD AND APPLICATION OF EXTRACELLULAR POLYSACCHARIDE
    Publication number: 20200157590
    Abstract: The present invention provides a Dendrobium officinale (D. officinale) endophytic fungus strain and an extracellular polysaccharide produced thereby as well as an extraction method and application of the extracellular polysaccharide. The extraction process of the extracellular polysaccharide includes: activating a strain; culturing seed liquid; fermenting and culturing; filtering the fermented liquid under vacuum; concentrated the filtrate under vacuum; conducting alcohol precipitation on the concentrated liquid; precipitating and centrifuging; dialyzing after dissolving the precipitates in water; freezing and drying the dialysate under vacuum; and obtaining the extracellular polysaccharide. The D. officinale endophytic fungus strain belongs to Fusarium solani, and the extracellular polysaccharide produced thereby has inhibitory effects on Escherichia coli, Staphylococcus aureus, Salmonella ssp., and Bacillus subtilis.
    Type: Application
    Filed: December 13, 2017
    Publication date: May 21, 2020
    Inventors: Wenyong Lou, Yingjie Zeng, Hongfeng Wang, Minhua Zong, Jing Liang