Patents by Inventor Xiaoying Guan

Xiaoying Guan 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 rapidly measuring melatonin adulteration of Chinese patent medicine or healthcare food
    Patent number: 9005986
    Abstract: A method for rapidly measuring melatonin adulteration of Chinese patent medicines and healthcare foods comprises: (1) extracting melatonin added to a Chinese patent medicine or healthcare food by using ethyl acetate; and (2) adding p-dimethylaminocinnamaldehyde to the extracted solution, and observing color. The method is rapid, simple and convenient, has strong specificity, high accuracy, reaction sensitivity, and a wide application range, and is applicable to on-site detection of melatonin adulteration of a Chinese patent medicine or healthcare food.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: April 14, 2015
    Assignee: Shenzhen Institute For Drug Control
    Inventors: Tiejie Wang, Yi Lu, Lihe Xiao, Xiaoying Guan, Dongqi Han, Guo Yin, Jue Wang, Xueqing Li, Yan Yan
  • METHOD FOR RAPIDLY MEASURING MELATONIN ADULTERATION OF CHINESE PATENT MEDICINE OR HEALTHCARE FOOD
    Publication number: 20140220698
    Abstract: A method for rapidly measuring melatonin adulteration of Chinese patent medicines and healthcare foods comprises: (1) extracting melatonin added to a Chinese patent medicine or healthcare food by using ethyl acetate; and (2) adding p-dimethylaminocinnamaldehyde to the extracted solution, and observing color. The method is rapid, simple and convenient, has strong specificity, high accuracy, reaction sensitivity, and a wide application range, and is applicable to on-site detection of melatonin adulteration of a Chinese patent medicine or healthcare food.
    Type: Application
    Filed: July 2, 2012
    Publication date: August 7, 2014
    Inventors: Tiejie Wang, Yi Lu, Lihe Xiao, Xiaoying Guan, Dongqi Han, Guo Yin, Jue Wang, Xueqing Li, Yan Yan