Zobrazeno 1 - 10
of 19
pro vyhledávání: '"520"'
Autor:
Lurong Xu, Xiaotong Zhou, Gaoshang Du, Dongwei Zhang, Bing Xia, Lumei Wang, Shijian Wu, Xuan Ni, Shenshan Zhan
Publikováno v:
Microchimica Acta. 183:2251-2258
The authors describe an aptasensor for the detection of the gonadal hormone progesterone (P4) in aqueous solution. Gold nanoparticles (AuNPs) were coated with a P4-specific aptamer, and such particles do not aggregate in presence of NaCl due to the p
Publikováno v:
Microchimica Acta. 188
A short ssDNA (Apt-21) rationally truncated from the parent 100 nt As(III) aptamer was used for colorimetric determination of As(III). Apt-21 serves dual functions, i.e., recognition of trace As(III) and regulation of AuNPs dispersion by surface atta
Publikováno v:
Microchimica Acta. 187
A chloramphenicol (CAP)-binding aptamer of 80 nucleotides (nt) was reported in 2011. In 2014, it was truncated to 40 nt and has since been used by most researchers, although a careful binding study is still lacking. In this work, binding assays using
Publikováno v:
Microchimica Acta. 187
As a first of its kind, we developed a highly sensitive colorimetric nanoprobe for phytic acid (PA) and Fe(III) ion detection based on 4-mercaptophenol (4MP) and thioglycolic acid (TGA)-functionalized gold nanoparticles {AuNPs@(4MP-TGA)}. AuNPs were
Publikováno v:
Microchimica Acta. 184:4305-4312
The authors describe a new kind of adenosine triphosphate (ATP) assay. It is based on the use of gold nanoparticles (AuNPs) coated with 4-mercaptophenylboronic acid (MPBA) as the recognition element for ATP. MPBA has a specific affinity for AuNPs thr
Autor:
Hongwei Ge, Wei Liu, Yanying Wang, Xianxiang Wang, Yaqin Liu, Zhaoyi Zhang, Hanbing Rao, Yan Yang, Ping Zou, Xin Liu
Publikováno v:
Microchimica Acta. 184:3017-3025
The paper describes an optical probe for colorimetric and fluorometric determination of protamine. The probe consists of a mixture of carbon quantum dots (CQDs) and gold nanoparticles (AuNPs) where the CQDs (with excitation/emission peaks at 350/440
Autor:
Lei Qin, Min Cheng, Dawei Huang, Guangming Zeng, Piao Xu, Xigui Liu, Danlian Huang, Chen Zhang, Huan Yi, Cui Lai
Publikováno v:
Microchimica Acta. 184:2097-2105
The authors describe a colorimetric assay for the quantitation of antibiotic kanamycin. It is based on hydrogen-bonding recognition capability of gold nanoparticles (AuNPs) in a chitosan matrix. Hydrogen-bonding interaction between kanamycin and chit
Publikováno v:
Microchimica Acta. 184:101-106
Patients with prostate cancer and systemic lupus erythematosus exhibit reduced DNase I activity, and patients with myocardial infarction exhibit increased DNase I activity. So the assay of DNase I is of high importance. A colorimetric assay is descri
Publikováno v:
Microchimica Acta. 186
An ultrasensitive fluorometric and colorimetric dual-mode assay is described for the determination of the activity of alkaline phosphatase (ALP). ALP catalyzes the decomposition of 2-phospho-L-ascorbic acid, and the ascorbic acid thus generated reduc
Publikováno v:
Microchimica Acta. 185
A competitive colorimetric assay has been established to detect chloramphenicol (CAP). It is based on the use of colloidal and electrostatically stabilized aptamer-modified gold nanoparticles (GNPs). The CAP aptamer is modified by a sequence of 5 ade