公开(公告)号：US12265032B2

公开(公告)日：2025-04-01

申请号：US18762916

申请日：2024-07-03

Applicant: JIANGSU UNIVERSITY

Inventor： Huanhuan Li ,  Qiyi Bei ,  Zhixiong Qi ,  Quansheng Chen ,  Yiyong Yan ,  Hongzhen Ma ,  Xin Zhang ,  Qin Ouyang

IPC: C12Q1/18 ,  C12Q1/00 ,  C12Q1/04 ,  C12Q1/689 ,  G01N1/38 ,  G01N21/64 ,  G01N33/12

Abstract: A method for determining ciprofloxacin in a meat product based on an enzyme-linked upconversion fluorescence and potassium titanium oxalate system is provided. An enzyme-linked upconversion nanoparticle solution is mixed with an aptamer-bound magnetized polydopamine solution to obtain a fluorescence-ultraviolet dual-signal detection system. A fluorescence standard curve and a colorimetric standard curve for the ciprofloxacin content determination are created through the fluorescence-ultraviolet dual-signal detection system in combination with potassium titanium oxalate and hydrogen peroxide. A fluorescence intensity signal characteristic value and an ultraviolet absorbance signal characteristic value of a meat sample solution are determined. A ciprofloxacin content in the meat sample is calculated according to the fluorescence standard curve and the colorimetric standard curve.

公开(公告)号：US20220026357A1

公开(公告)日：2022-01-27

申请号：US17329780

申请日：2021-05-25

Applicant: Jiangsu University

Inventor： Qin Ouyang ,  Li Wang ,  Quansheng Chen ,  Zhiming Guo ,  Huanhuan Li ,  Jizhong Wu ,  Haihui Pan

IPC: G01N21/3563 ,  G01N21/359

Abstract: The invention discloses a portable visible/near-infrared spectrum detection device, comprising a housing, a bottom plate, a screen support frame, a battery part on which a microprocessor is arranged, a detection part and a switch part, wherein the battery part, the detection part and the switch part are arranged in the housing; and the detection part comprises a spectrometer, a light source, a collimating mirror and the microprocessor. The device has the characteristics of rapidness, no damage and portability, and can realize rapid detection and early warning of food quality.

公开(公告)号：US12287294B2

公开(公告)日：2025-04-29

申请号：US18799818

申请日：2024-08-09

Applicant: JIANGSU UNIVERSITY

Inventor： Qin Ouyang ,  Yu Wang ,  Yanna Rong ,  Quansheng Chen ,  Hao Lin ,  Zhiming Guo

IPC: G01N33/02 ,  B01L3/00 ,  G01J3/46 ,  G01N21/78

Abstract: A method of preparing a nanoscaled dye@ZIF-8-based colorimetric sensor is provided, in which a ZIF-8 nanomaterial is first prepared from Zn(CH3COO)2 and the 2-methylimidazole, and then the ZIF-8 nanomaterial is dispersed with ethanol and mixed with a colorimetric solution. The resultant mixed solution is added with polyethylene glycol-300 and applied to a substrate to obtain the nanoscaled dye@ZIF-8-based colorimetric sensor. This application further provides an evaluation method using the nanoscaled dye@ZIF-8-based colorimetric sensor, in which a back propagation neural network is established as the food quality evaluation model to evaluate the food quality.

公开(公告)号：US11635385B2

公开(公告)日：2023-04-25

申请号：US17505870

申请日：2021-10-20

Applicant: JiMei University ,  Jiangsu University

Inventor： Quansheng Chen ,  Huanhuan Li ,  Qin Ouyang ,  Jiaji Zhu ,  Yi Xu ,  Tianhui Jiao ,  Haihui Pan

IPC: G01N21/65 ,  G01N21/59 ,  G06F17/18

Abstract: A method for fast extracting an organic pollutant in a complex system is disclosed, which includes following steps. A surface-enhanced Raman scattering (SERS) spectrum of an organic pollutant is divided to obtain P wavelength sub-intervals with overlapping regions. The P wavelength sub-intervals are screened to obtain ω wavelength sub-intervals. The ω wavelength sub-intervals are screened to obtain a required wavelength sub-interval. The required wavelength sub-interval is screened to obtain a required wavelength subset. A method and a system for fast detecting an organic pollutant in a complex system are also disclosed.