Patents by Inventor Qiufen GAO

Qiufen GAO 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).

  • Limonin extraction method
    Patent number: 9896477
    Abstract: A limonin extraction method, comprising the following steps: step one, raw material extracting or juicing: directly soaking raw material in water or using a presser to directly juice the raw material to obtain the extract; step two, adding salt and adjusting pH: adding a sulfate solid material or saturated sulfate solution to the extract; adjusting pH to 3-7; step three, heating and preserving heat: heating to 20° C.-100° C. and keeping at the temperature for 10 minutes-110 minutes; step four, centrifuging: centrifuging for 10 minutes at a rotational speed of 2500×g, and obtaining limonin precipitation. Compared with a traditional method, the raw material in the present invention can directly use the extract liquid or juicing liquid without drying, and recover most limonin in water using a precipitation method without complicated apparatus, and is easy to operate and has a low process cost.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: February 20, 2018
    Assignee: JIMEI UNIVERSITY
    Inventors: Hui Ni, Huinong Cai, Yuanfan Yang, Qiufen Gao, Feng Chen, Xiping Du, Gaoling Huang, Ling Wu, Anfeng Xiao
  • LIMONIN EXTRACTION METHOD
    Publication number: 20170029460
    Abstract: A limonin extraction method, comprising the following steps: step one, raw material extracting or juicing: directly soaking raw material in water or using a presser to directly juice the raw material to obtain the extract; step two, adding salt and adjusting pH: adding a sulfate solid material or saturated sulfate solution to the extract; adjusting pH to 3-7; step three, heating and preserving heat: heating to 20° C.-100° C. and keeping at the temperature for 10 minutes-110 minutes; step four, centrifuging: centrifuging for 10 minutes at a rotational speed of 2500×g, and obtaining limonin precipitation. Compared with a traditional method, the raw material in the present invention can directly use the extract liquid or juicing liquid without drying, and recover most limonin in water using a precipitation method without complicated apparatus, and is easy to operate and has a low process cost.
    Type: Application
    Filed: April 30, 2015
    Publication date: February 2, 2017
    Applicant: JIMEI UNIVERSITY
    Inventors: Hui NI, Huinong CAI, Yuanfan YANG, Qiufen GAO, Feng CHEN, Xiping DU, Gaoling HUANG, Ling WU, Anfeng XIAO