Patents by Inventor Daiwu Liu

Daiwu 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).

  • Patent number: 8828187
    Abstract: A method for processing a lignocellulose material, comprises the following steps: (1) crushing and sieving the lignocellulose material, and collecting granules with a particle size of between 0.08 and 0.1 mm; (2) mixing the granules obtained in step (1) with water, and dispersing through a colloid mill to yield a suspension with a particle size of 40-80 ?m; (3) homogenizing the suspension obtained in the step (2) under high pressure to have a particle size of between 10 and 40 ?m; and (4) buffering the suspension obtained in the step (3) with a buffer solution of sodium acetate and acetic-acid, adding cellulase, ?-glucosidase, and xylanase, and performing zymolysis for 36-72 hours.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: September 9, 2014
    Assignee: Angel Yeast Co., Ltd.
    Inventors: Xuefeng Yu, Zhihong Li, Minghua Yu, Juan Yao, Daiwu Liu, Jincheng Lei, Zhijun Li
  • Patent number: 8697425
    Abstract: The present invention relates to a composite yeast for high concentration alcohol fermentation, which includes thermostable Saccharomyces cerevisiae, acid protease, phytase, cellulose, ?-glucanase, and pectinase, and is suitable for the high concentration alcohol fermentation for various raw materials. In addition to normal fermentation, the composite yeast of the present invention can degrade the raw materials, increase the nutrient ingredients in the mash, promote the growth of yeast and provide stress tolerance protection.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: April 15, 2014
    Assignee: Angel Yeast Co., Ltd.
    Inventors: Xuefeng Yu, Zhihong Li, Minghua Yu, Juan Yao, Zhijun Li, Daiwu Liu
  • Patent number: 8263374
    Abstract: The present invention relates to a composite yeast suitable for high concentration alcohol fermentation from sugar-containing raw materials, characterizing in that the composite yeast comprises any kind of dried yeast selected from Brewers yeast Saccharomyces cerevisiae Hansen of Saccharomyces cerevisiae, grape wine yeast Saccharomyces uvarum Beijerinek, and nutritious materials which are necessary for yeast growth, the nutritious materials include: the dried yeast 40-70 parts by weight, a nitrogen source 20-40 parts by weight, a phosphorous source 5-10 parts by weight, an other inorganic salt 2.5-5 parts by weight, a trace vitamin 1-2.5 parts by weight and a bacteriostatic 0.5-1.2 parts by weight. The present invention further relates to a method for preparation of the composite yeast suitable for high concentration alcohol fermentation from sugar-containing raw materials.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: September 11, 2012
    Assignee: Angel Yeast Co., Ltd.
    Inventors: Xuefeng Yu, Zhihong Li, Minghua Yu, Juan Yao, Zhijun Li, Daiwu Liu
  • Publication number: 20120193049
    Abstract: A method for processing a lignocellulose material, comprises the following steps: (1) crushing and sieving the lignocellulose material, and collecting granules with a particle size of between 0.08 and 0.1 mm; (2) mixing the granules obtained in step (1) with water, and dispersing through a colloid mill to yield a suspension with a particle size of 40-80 ?m; (3) homogenizing the suspension obtained in the step (2) under high pressure to have a particle size of between 10 and 40 ?m; and (4) buffering the suspension obtained in the step (3) with a buffer solution of sodium acetate and acetic-acid, adding cellulase, ?-glucosidase, and xylanase, and performing zymolysis for 36-72 hours.
    Type: Application
    Filed: April 12, 2012
    Publication date: August 2, 2012
    Inventors: Xuefeng YU, Zhihong LI, Minghua YU, Juan YAO, Daiwu LIU, Jincheng LEI, Zhijun LI
  • Publication number: 20110171710
    Abstract: A method for producing cellulosic ethanol is disclosed, which comprises the following steps: adding the medium containing the source materials of cellulose and/or hemicellulose to fermentation reaction vessel; adding cellulase to fermentation reaction vessel, and inoculating Candida lusitaniae; running simultaneous saccharification fermentation (SSFs) with the combined action of cellulose and Candida lusitaniae, and obtaining cellulosic ethanol by separation. Candida lusitaniae used in SSFs in present invention has higher ethanol tolerance and a higher ethanol production rate, it can use cellulose and hemicellulose as source materials and effectively produce cellulosic ethanol with cellulase in SSFs.
    Type: Application
    Filed: September 27, 2009
    Publication date: July 14, 2011
    Applicant: ANGELYEAST CO., LTD
    Inventors: Xuefeng Yu, Zhihong Li, Minghua Yu, Juan Yao, Zhijun Li, Daiwu Liu
  • Publication number: 20100184196
    Abstract: The present invention relates to a composite yeast suitable for high concentration alcohol fermentation from sugar-containing raw materials, characterizing in that the composite yeast comprises any kind of dried yeast selected from Brewers yeast Saccharomyces cerevisiae Hansen of Saccharomyces cerevisiae, grape wine yeast Saccharomyces uvarum Beijerinek, and nutritious materials which are necessary for yeast growth, the nutritious materials include: the dried yeast 40-70 parts by weight, a nitrogen source 20-40 parts by weight, a phosphorous source 5-10 parts by weight, an other inorganic salt 2.5-5 parts by weight, a trace vitamin 1-2.5 parts by weight and a bacteriostatic 0.5-1.2 parts by weight. The present invention further relates to a method for preparation of the composite yeast suitable for high concentration alcohol fermentation from sugar-containing raw materials.
    Type: Application
    Filed: July 30, 2008
    Publication date: July 22, 2010
    Applicant: Angel Yeast Co., Ltd.
    Inventors: Xuefeng Yu, Zhihong Li, Minghua Yu, Juan Yao, Zhijun Li, Daiwu Liu
  • Publication number: 20080187987
    Abstract: The present invention relates to a composite yeast for high concentration alcohol fermentation, which includes thermostable Saccharomyces cerevisiae, acid protease, phytase, cellulose, ?-glucanase, and pectinase, and is suitable for the high concentration alcohol fermentation for various raw materials. In addition to normal fermentation, the composite yeast of the present invention can degrade the raw materials, increase the nutrient ingredients in the mash, promote the growth of yeast and provide stress tolerance protection.
    Type: Application
    Filed: December 30, 2005
    Publication date: August 7, 2008
    Inventors: Xuefeng Yu, Zhihong Li, Minghua Yu, Juan Yao, Zhijun Li, Daiwu Liu