Patents by Inventor Yanfang Zou

Yanfang Zou 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).

  • Method for extracting and separating flavonoids from leaves
    Patent number: 11739113
    Abstract: The present disclosure provides a method for extracting and separating flavonoids from Lindera aggregata leaves. The method includes: mixing Lindera aggregata leaves with an adsorbent, conducting elution with a matrix solid-phase dispersion (MSPD) extraction method, followed by concentration to obtain a Lindera aggregata leaf extract; conducting primary separation and secondary separation on the Lindera aggregata leaf extract by high-speed counter-current liquid chromatography (HSCCC), to separate quercetin-3-O-?-D-arabinofuranoside, a mixture of quercetin-3-O-?-D-glucoside and quercetin-5-O-?-D-glucoside, quercetin-3-O-rhamnopyranoside, and kaempferol-7-O-?-L-rhamnopyranoside; where a second solvent system used in the secondary separation includes ethyl acetate, n-butanol, an addictive and water, and the addictive includes cyclodextrin.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: August 29, 2023
    Assignee: Ningbo Municipal Hospital of T.C.M.
    Inventors: Xin Peng, Chu Chu, Yanfang Zou, Shengqiang Tong
  • Method For Extracting And Separating Flavonoids From Lindera Aggregata Leaves
    Publication number: 20230147050
    Abstract: The present disclosure provides a method for extracting and separating flavonoids from Lindera aggregata leaves. The method includes: mixing Lindera aggregata leaves with an adsorbent, conducting elution with a matrix solid-phase dispersion (MSPD) extraction method, followed by concentration to obtain a Lindera aggregata leaf extract; conducting primary separation and secondary separation on the Lindera aggregata leaf extract by high-speed counter-current liquid chromatography (HSCCC), to separate quercetin-3-O-?-D-arabinofuranoside, a mixture of quercetin-3-O-?-D-glucoside and quercetin-5-O-?-D-glucoside, quercetin-3-O-rhamnopyranoside, and kaempferol-7-O-?-L-rhamnopyranoside; where a second solvent system used in the secondary separation includes ethyl acetate, n-butanol, an addictive and water, and the addictive includes cyclodextrin.
    Type: Application
    Filed: May 24, 2022
    Publication date: May 11, 2023
    Inventors: Xin Peng, Chu Chu, Yanfang Zou, Shengqiang Tong