Patents by Inventor Aijuan WU

Aijuan WU 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: 11866756
    Abstract: The embodiments of the present disclosure provides a method of co-producing erythritol and arabinose by using a xylose mother liquor, wherein an extract and a raffinate are obtained by separating the xylose mother liquor through a first chromatography, the extract is configured to prepare crystallized xylose, the raffinate and the liquid glucose or crystallized glucose are blended and erythritol is produced by using a Yarrowia lipolytica with high osmotolerant and a high conversion rate. erythritol crystals are obtained by centrifugation and crystallization first by using characteristics of low solubility degree and easy crystallization of the erythritol, the arabinose raffinate having a high content of arabinose is obtained by separating a centrifuged erythritol mother liquor through a second chromatography, and arabinose crystals are obtained based on the arabinose raffinate.
    Type: Grant
    Filed: July 18, 2023
    Date of Patent: January 9, 2024
    Assignee: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Aijuan Wu, Jiaxing Luo, Changhui Hu, Mingqian Yang, Chengjun Liao, Yi Zheng, Shuncheng Fang, Mian Li
  • Publication number: 20230357805
    Abstract: The embodiments of the present disclosure provides a method of coproducing erythritol and arabinose by using a xylose mother liquor, wherein an extract and a raffinate are obtained by separating the xylose mother liquor through a first chromatography, the extract is configured to prepare crystallized xylose, the raffinate and the liquid glucose or crystallized glucose are blended and erythritol is produced by using a Yarrowia lipolytica with high osmotolerant and a high conversion rate. Erythritol crystals are obtained by centrifugation and crystallization first by using characteristics of low solubility degree and easy crystallization of the erythritol, the arabinose raffinate having a high content of arabinose is obtained by separating a centrifuged erythritol mother liquor through a second chromatography, and arabinose crystals are obtained based on the arabinose raffinate.
    Type: Application
    Filed: July 18, 2023
    Publication date: November 9, 2023
    Applicant: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Aijuan WU, Jiaxing LUO, Changhui HU, Mingqian YANG, Chengjun LIAO, Yi ZHENG, Shuncheng FANG, Mian LI
  • Publication number: 20230345993
    Abstract: The present disclosure relates a method for preventing agglomeration in a mixture of xylitol and calcium aspartate. The method includes the following steps: first adjusting and measuring water activities of xylitol particles and calcium aspartate particles; then mixing the calcium aspartate particles with a water activity in a range of 0.50-0.52 with the xylitol particles with a water activity in a range of 0.48-0.56 to obtain a mixture of xylitol and calcium aspartate; or mixing the calcium aspartate particles with a water activity in a range of 0.52-0.58 with the xylitol particles with a water activity in a range of 0.50-0.60 to obtain a mixture of xylitol and calcium aspartate; or adding maltitol particles in a weight ratio of 5%-20% to a total mass of the xylitol particles and the maltitol particles to the mixture of xylitol and calcium aspartate.
    Type: Application
    Filed: July 5, 2023
    Publication date: November 2, 2023
    Applicant: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Baoxing MAO, Chengjun LIAO, Xiuxiu WANG, Ziyao WEI, Aijuan WU, Jiaxing LUO, Cui LIN, Mian LI
  • Publication number: 20230313236
    Abstract: The present invention relates to a system for jointly producing erythritol and liquid sorbitol by using a corn starch, including a liquefaction tank, a saccharification tank, a filter and a nanofiltration assembly. The liquefaction tank is used to perform liquefaction for the corn starch, the saccharification tank is used to perform saccharification for the liquefied material, the filter is used to filter out impurities in the saccharified material to obtain a glucose liquid, and the nanofiltration assembly is used to perform nanofiltration for the filtered glucose liquid to respectively obtain a dialysate and a concentrate. The system further includes a fermentation and crystallization assembly for performing fermentation and crystallization for the dialysate to prepare crystalline erythritol, and a hydrogenation and evaporation assembly for performing hydrogenation and evaporation for the concentrate to prepare liquid sorbitol.
    Type: Application
    Filed: November 30, 2021
    Publication date: October 5, 2023
    Inventors: Yi Zheng, Aijuan Wu, Shuncheng Fang, Chengjun Liao, Lanlan Chen, Jiaxing Luo, Changhui Hu, Fangming Zeng, Mian Li