Patents by Inventor Badal C. Saha

Badal C. Saha 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).

  • Patent number: 7977083
    Abstract: Recombinant microorganisms are useful for producing xylitol by fermentation of arabinose. The recombinant microorganisms are produced by transformation of host microorganisms with heterologous polynucleotide sequences coding for each of L-xylulose reductase, D-tagatose 3-epimerase, and L-arabinose isomerase, which transformants express the heterologous polynucleotides at a sufficient functional level to be effective to produce xylitol from arabinose. Production of xylitol is effected by contacting these recombinant microorganisms with a substrate comprising arabinose under conditions effective to produce xylitol from arabinose.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: July 12, 2011
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Yoshikiyo Sakakibara, Badal C. Saha, Paul Taylor
  • Patent number: 7939308
    Abstract: Mannitol is produced in a highly efficient fermentative method using Lactobacillus intermedius NRRL B-30560, or in a biochemical method using mannitol dehydrogenase isolated from this strain. Fructose serves as the primary carbon substrate in both the fermentative and biochemical conversions, but important secondary carbon sources include glucose, maltose, mannose and galactose. Mannitol is useful in the food, pharmaceutical, and medicine industries as a sweet-tasting bodying and texturing agent.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: May 10, 2011
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Badal C. Saha
  • Publication number: 20090023195
    Abstract: Mannitol is produced in a highly efficient fermentative method using Lactobacillus intermedius NRRL B-30560, or in a biochemical method using mannitol dehydrogenase isolated from this strain. Fructose serves as the primary carbon substrate in both the fermentative and biochemical conversions, but important secondary carbon sources include glucose, maltose, mannose and galactose. Mannitol is useful in the food, pharmaceutical, and medicine industries as a sweet-tasting bodying and texturing agent.
    Type: Application
    Filed: September 25, 2007
    Publication date: January 22, 2009
    Applicant: The United States of America as Represented by the Secretary of Agriculture
    Inventor: Badal C. Saha
  • Patent number: 6855526
    Abstract: Mannitol is produced in a highly efficient fermentative method using Lactobacillus intermedius NRRL B-30560, or in a biochemical method using mannitol dehydrogenase isolated from this strain. Fructose serves as the primary carbon substrate in both the fermentative and biochemical conversions, but important secondary carbon sources include glucose, maltose, mannose and galactose. Mannitol is useful in the food, pharmaceutical, and medicine industries as a sweet-tasting bodying and texturing agent.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: February 15, 2005
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Badal C. Saha
  • Publication number: 20030215931
    Abstract: Mannitol is produced in a highly efficient fermentative method using Lactobacillus intermedius NRRL B-30560, or in a biochemical method using mannitol dehydrogenase isolated from this strain. Fructose serves as the primary carbon substrate in both the fermentative and biochemical conversions, but important secondary carbon sources include glucose, maltose, mannose and galactose. Mannitol is useful in the food, pharmaceutical, and medicine industries as a sweet-tasting bodying and texturing agent.
    Type: Application
    Filed: May 15, 2002
    Publication date: November 20, 2003
    Inventor: Badal C. Saha
  • Patent number: 5882905
    Abstract: An .alpha.-L-arabinofuranosidase enzyme which is highly thermostable, and is effective for the hydrolysis of arabinofuranosyl residues from L-arabinose containing polysaccharides and hemicelluloses is disclosed. The enzyme is produced by color variant Aureobasidium pullulans strain NRRL Y-21792. This .alpha.-L-arabinofuranosidase may be used in conjunction with xylanolytic enzymes for the treatment of hemicellulosic materials to produce fermentable sugars, particularly xylose and L-arabinose.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: March 16, 1999
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Badal C. Saha, Rodney J. Bothast
  • Patent number: 5747320
    Abstract: A new .beta.-glucosidase enzyme which is tolerant to glucose and cellobiose, and which is effective for the hydrolysis of cellobiose to glucose, is disclosed. The enzyme is produced by Candida peltata, strain NRRL Y-21603. This .beta.-glucosidase may be used in conjunction with cellulolytic enzymes for the treatment of cellulosic materials to convert cellulose to glucose.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: May 5, 1998
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Badal C. Saha, Rodney J. Bothast
  • Patent number: 4814267
    Abstract: An improved method of preparing high maltose conversion syrups and other sweeteners from starch substrates comprises saccharifying the starch at higher temperatures than presently used with environmentally compatible thermostable .beta.-amylase and other thermostable enzymes.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: March 21, 1989
    Assignee: Michigan Biotechnology Institute
    Inventors: Joseph G. Zeikus, Badal C. Saha