Patents by Inventor Siqing Liu

Siqing Liu 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).

  • Increased alcohol tolerance using the PntAB gene
    Patent number: 10364417
    Abstract: The pntAB locus may provide for increased alcohol tolerance in a microorganism, through expression of one or both of the pntA and pntB genes. A microorganism may have increased alcohol tolerance due to a transformation of the microorganism or an ancestor of the microorganism utilizing one or both of the pntA and pntB genes. The microorganism may be, for example, of a bacterial or fungal species. According to some exemplary embodiments, the microorganism may be a lactic acid bacterium.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: July 30, 2019
    Assignees: The United States of America, as Represented by the Secretary of Agriculture, The Regents of the University of California
    Inventors: Siqing Liu, Christopher D. Skory, David A. Mills
  • INCREASED ALCOHOL TOLERANCE USING THE PNTAB GENE
    Publication number: 20190055525
    Abstract: The pntAB locus may provide for increased alcohol tolerance in a microorganism, through expression of one or both of the pntA and pntB genes. A microorganism may have increased alcohol tolerance due to a transformation of the microorganism or an ancestor of the microorganism utilizing one or both of the pntA and pntB genes. The microorganism may be, for example, of a bacterial or fungal species. According to some exemplary embodiments, the microorganism may be a lactic acid bacterium.
    Type: Application
    Filed: August 15, 2017
    Publication date: February 21, 2019
    Inventors: SIQING LIU, CHRISTOPHER D. SKORY, DAVID A. MILLS
  • Novel Clostridium Species That Converts Wheat Straw and Switchgrass Hydrolysates Into Butyric Acid
    Publication number: 20160355847
    Abstract: The present disclosure is directed to methods for producing butyric acid comprising fermenting a lignocellulosic biomass hydrolysate using C. tyrobutyricum strain RPT-4213 under anaerobic conditions using dilute acid-pretreated hydrolysates of wheat straw, corn fiber, corn stover, rice hull, and switchgrass, for example.
    Type: Application
    Filed: June 3, 2016
    Publication date: December 8, 2016
    Inventors: Siqing Liu, Kenneth M. Bischoff, Timothy D. Leathers, Joseph O. Rich
  • NOVEL FERULATE ESTERASE ISOLATED FROM LACTOBACCILLUS FERMENTUM
    Publication number: 20160244734
    Abstract: The cDNA and amino acid sequences of a ferulate esterase obtained from Lactobacillus fermentum NRRL B-1932 is determined. An expression vector for expression of the ferulate esterase gene is generated. The recombinate ferulate esterase gene and transcribed protein contains a linker sequence and 6× HIS tag for purification. Enzymatic activity of the recombinant protein is determined.
    Type: Application
    Filed: February 24, 2015
    Publication date: August 25, 2016
    Inventor: Siqing Liu
  • Ferulate esterase isolated from
    Patent number: 9416354
    Abstract: The cDNA and amino acid sequences of a ferulate esterase obtained from Lactobacillus fermentum NRRL B-1932 is determined. An expression vector for expression of the ferulate esterase gene is generated. The recombinate ferulate esterase gene and transcribed protein contains a linker sequence and 6×HIS tag for purification. Enzymatic activity of the recombinant protein is determined.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: August 16, 2016
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventor: Siqing Liu
  • strain and bacteriocin
    Patent number: 8470583
    Abstract: The present invention relates to an isolated Lactobacillus paracasei bacterium, deposited as NRRL B-50314, that secretes a bacteriocin. More specifically, the bacteriocin has antibacterial activity against a range of Gram-positive bacteria, including but not limited to Listeria monocytogenes, Staphylococcus aureus, Enterococcus faecalis, and other Lactobacillus species. Additionally, the bacteriocin has antibacterial activity against methicillin resistant Staphylococcus aureus.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: June 25, 2013
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Siqing Liu, Kenneth M. Bischoff, Brian J. Wilkinson