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21 Result(s)

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  1. No Access

    Article

    Novel Method for Spectrophotometric Determination of L-Tryptophan in the Enzymatic Resolution of DL-N-Acetyl-Tryptophan

    A novel spectrophotometric method for the determination of tryptophan (Trp) has been proposed. The sensitive and simple method was based upon the finding that NaNO2 and Trp formed a diazotized product in nitric a...

    Wentao Yu, Hongman Zhang, Guosong Chen, Chunyan Tu, **kai Ouyang in Microchimica Acta (2004)

  2. No Access

    Article

    A SERS-based immunoassay for porcine circovirus type 2 using multi-branched gold nanoparticles

    We report on a facile immunoassay for porcine circovirus type 2 (PCV2) based on surface enhanced Raman scattering (SERS) using multi-branched gold nanoparticles (mb-AuNPs) as substrates. The mb-AuNPs in the im...

    Zhihui Luo, Wentao Li, Donglian Lu, Kun Chen, Qigai He, Heyou Han… in Microchimica Acta (2013)

  3. No Access

    Article

    Colorimetric and visual determination of total nereistoxin-related insecticides by exploiting a nereistoxin-driven aggregation of gold nanoparticles

    We describe a method for the visual and colorimetric determination of total nereistoxin-related insecticide residues. It is based on the nereistoxin-induced aggregation of gold nanoparticles (AuNPs). The nerei...

    Wei Liu, Daohong Zhang, Wenxin Zhu, Sikai Zhang, Yashan Wang… in Microchimica Acta (2015)

  4. No Access

    Article

    Fluorescence aggregation assay for the protein biomarker mucin 1 using carbon dot-labeled antibodies and aptamers

    We have developed a sensitive fluorescence assay for the protein biomarker mucin 1 (MUC1). It is based on the aggregation of functionalized carbon dots (CDs) in the presence of MUC1. The CDs with a size of ~2 ...

    Nan Ma, Wentao Jiang, Ting Li, Zhongqiang Zhang, Haizhi Qi… in Microchimica Acta (2015)

  5. No Access

    Article

    Synthesis of a graphitic carbon nitride nanocomposite with magnetite as a sorbent for solid phase extraction of phenolic acids

    We have developed a facile in-situ growth method for the deposition of magnetite (Fe3O4) particles on the surface of a graphitic carbon nitride (g-C3N4) nanosheet. The material was characterized by X-ray diffract...

    **g Yang, Ling Si, Shihai Cui, Wentao Bi in Microchimica Acta (2015)

  6. No Access

    Article

    Dual signal amplification strategy for amperometric aptasensing using hydroxyapatite nanoparticles. Application to the sensitive detection of the cancer biomarker platelet-derived growth factor BB

    The authors describe a dual signal amplification strategy for improving the sensitivity of electrochemical aptasensor. Hydroxyapatite nanoparticles (HAP-NPs) serve as the support for deposition of the respecti...

    Wentao Jiang, Dazhi Tian, Li Zhang, Qingjun Guo, Yujun Cui… in Microchimica Acta (2017)

  7. No Access

    Article

    Sensitive immunosensing of the carcinoembryonic antigen utilizing aptamer-based in-situ formation of a redox-active heteropolyacid and rolling circle amplification

    A highly sensitive electrochemical scheme for the detection of the cancer biomarker carcinoembryonic antigen (CEA) is reported. An aptamer-based formation of redox-active molybdophosphate is combined with roll...

    Wentao Jiang, Lei Liu, Li Zhang, Qingjun Guo, Yujun Cui, Minghui Yang in Microchimica Acta (2017)

  8. No Access

    Article

    Layered vanadium(IV) disulfide nanosheets as a peroxidase-like nanozyme for colorimetric detection of glucose

    The authors have discovered that vanadium disulfide (VS2) nanosheets, synthesized by a hydrothermal method, exert stable peroxidase-like activity. The catalytic activity, with H2O2 as a cosubstrate, follows Micha...

    Lunjie Huang, Wenxin Zhu, Wentao Zhang, Kai Chen, **g Wang, Rong Wang… in Microchimica Acta (2017)

  9. No Access

    Article

    Fluorometric determination of dopamine by using molybdenum disulfide quantum dots

    A method is described for the rapid fluorometric determination of dopamine (DA) by using molybdenum disulfide quantum dots (MoS2 QDs) that were fabricated via an ammonium hydroxide etching method. The probe has a...

    **nnan Liu, Wentao Zhang, Lunjie Huang, Na Hu, Wei Liu, Yingnan Liu… in Microchimica Acta (2018)

  10. No Access

    Article

    Colorimetric detection and ty** of E. coli lipopolysaccharides based on a dual aptamer-functionalized gold nanoparticle probe

    A rapid method for identification and ty** of lipopolysaccharides (LPS) was developed by utilizing the different binding affinities between two kinds of gold nanoparticles (AuNPs) functionalized with two apt...

    Longjiao Zhu, Shuting Li, **angli Shao, Yuxiang Feng, Peiyan **e… in Microchimica Acta (2019)

  11. No Access

    Article

    Rapid and selective fluorometric determination of tannic acid using MoO3-x quantum dots

    The authors describe a fluorometric method for the quantification of tannic acid (TA). MoO3-x quantum dots (QDs) can selectively capture TA via the formation of an organic molybdate complex. This causes an electr...

    **nnan Liu, Wentao Zhang, Chengyuan Yang, Yuan Yao, Lunjie Huang… in Microchimica Acta (2019)

  12. No Access

    Article

    Signal amplification in immunoassays by using noble metal nanoparticles: a review

    This review (with 147 references) summarizes the state of the art in methods for signal amplification in immunoassays by using noble metal nanoparticles (MeNPs). Following an introduction into the field, a fir...

    Hualin Yang, Wentao Xu, Yu Zhou in Microchimica Acta (2019)

  13. No Access

    Article

    A colorimetric zinc(II) assay based on the use of hairpin DNAzyme recycling and a hemin/G-quadruplex lighted DNA nanoladder

    A method is described for sensitive colorimetric determination of zinc(II) ions that uses (a) a Zn(II)-responsive hairpin DNAzyme that assists target recycling, (b) hybridization chain reaction, and (c) hemin/...

    Longjiao Zhu, Guishan Li, **angli Shao, Kunlun Huang, Yunbo Luo… in Microchimica Acta (2019)

  14. No Access

    Article

    Carbon nanotubes in electrochemical, colorimetric, and fluorimetric immunosensors and immunoassays: a review

    This review (with 126 references) summarizes the progress that has been made in the use of carbon nanotubes (CNTs) in immunoassays and immunosensors. Following an introduction into the field, a first large sec...

    Hualin Yang, Wentao Xu, **ongyan Liang, Yuying Yang, Yu Zhou in Microchimica Acta (2020)

  15. No Access

    Article

    Fluorescent detection of Cu (II) ions based on DNAzymatic cascaded cyclic amplification

    A fluorescent biosensor based on the cascaded cyclic amplification-lighted copper nanoparticles has been developed, optimized, and validated. In the double-modular cascaded cyclic amplification, a DNAzymatic c...

    **g**g Tian, Zaihui Du, Longjiao Zhu, **angli Shao, **angyang Li… in Microchimica Acta (2020)

  16. No Access

    Article

    Optical assay using B-doped core–shell Fe@BC nanozyme for determination of alanine aminotransferase

    B-doped core–shell Fe@BC nanozyme was synthesized. The peroxidase (POD) like activity of Fe@BC nanozyme was studied and utilized for detecting the activity of alanine aminotransferase (ALT). In the presence of...

    Dazhi Tian, Wen **ang, Hao Wang, Wentao Jiang, Ting Li, Minghui Yang in Microchimica Acta (2022)

  17. No Access

    Article

    A gold nanoparticle-based lateral flow immunoassay for atrazine point-of-care detection using a handhold scanning device as reader

    A method is described to achieve accurate quantitative detection of atrazine (ATZ) in maize by using lateral flow strips based on gold nanoparticles (GNPs) and a handheld scanning reader. GNPs of 15 nm in dia...

    Tieqiang Sun, Zehua Xu, Shuai Yuan, **ao Liu, Zongfen Chen, Zhenyu Han… in Microchimica Acta (2022)

  18. Article

    Open Access

    2D nanomaterial sensing array using machine learning for differential profiling of pathogenic microbial taxonomic identification

    An integrated custom cross-response sensing array has been developed combining the algorithm module’s visible machine learning approach for rapid and accurate pathogenic microbial taxonomic identification. Th...

    Zhijun Li, Yizhou Jiang, Shihuan Tang, Haixia Zou, Wentao Wang… in Microchimica Acta (2022)

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  19. No Access

    Article

    Nano-gold-enhanced LAMP method for qualitative visual detection of Salmonella in milk

    Since Salmonella can cause foodborne disease and public health safety issues and requires a robust, rapid, on-site detection method, a novel visual qualitative method with nano-gold-enhanced loop-mediated isother...

    ZaiHui Du, ShengHao Lin, JiaLe Li, **g**g Tian, WenTao Xu… in Microchimica Acta (2022)

  20. No Access

    Article

    Time-resolved fluorescence microspheres-antibody-penicillin-binding protein assisted construction of immunochromatographic assay for sensitive detection of 22 β-lactams in milk

    A sensitive immunochromatographic assay (ICA) using time-resolved fluorescence microspheres (TRFMs) coupled with an indirect-labeling mode was developed for simultaneously determining 22 kinds of β-lactams in ...

    Yawei Sun, **angjie Deng, Changwei Luo, Wentao Ma, Wan**g Liu… in Microchimica Acta (2023)

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