SERS encoded nanoparticle heterodimers for the ultrasensitive detection of folic acid

Wu, Xiaoling; Chen, Xi; Gao, Fengli; Ma, Wei; Xu, Liguang; Kuang, Hua; Li, Aike

doi:10.1016/j.bios.2015.08.009

Cited by 48 publications

(14 citation statements)

References 32 publications

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“…The AuNPs of 10 nm were used as seeds to prepare Au@Ag nanoparticles via the modied method. [16][17][18][19] Firstly, trisodium citrate (3 mL, 1%) was rapidly injected into boiling water (99 mL) with 1 mL HAuCl 4 $3H 2 O (1%) aqueous solution. Aer the mixture was kept boiling for 30 min, cooled down in room temperature and stored at 4 C. Secondly, 2 mL of 0.1 mol L À1 L-ascorbic acid was put into 10 mL AuNPs at stirring for 5 min.…”

Section: Synthesis Of Au@ag Nanoparticlesmentioning

confidence: 99%

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO₂@Au@Ag using SERS

Tong

Fang

et al. 2017

RSC Adv.

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Section: Synthesis Of Au@ag Nanoparticlesmentioning

confidence: 99%

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO₂@Au@Ag using SERS

Tong

Fang

et al. 2017

RSC Adv.

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“…UV-VIS extinction spectroscopy of the mAb-labeled AuNPs and the original AuNPs showed that the maximum absorption wavelength of the AuNPs shifted from 518 to 522 nm after reaction (Figure 2(b)). The red shift of the maximum absorption wavelength indicated that the diameter of AuNPs increased after conjugation (Wu et al, 2016). The pH was maintained at 8 during the reaction for optimal conjugation.…”

Section: Listeria Spp-specific Paper Sensormentioning

confidence: 99%

“…AuNPs of 15 nm diameter were synthesized by a seed-mediated growth method with minor revision (Wu et al, 2016). Briefly, 500 mL of 0.01% HAuCl 4 solution in an Erlenmeyer flask was boiled for 10 min with constant magnetic stirring.…”

Section: Synthesis Of Aunpsmentioning

confidence: 99%

Gold nanoparticle-based paper sensor for multiple detection of 12 Listeria spp. by P60-mediated monoclonal antibody

Wang

Liu

Song

et al. 2016

Food and Agricultural Immunology

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The genus of Listeria consists of heterologous species and its presence in the food chain is an indicator of poor hygiene. However, a portable and simple paper sensor for detection of listeria spp. with high accuracy was still unknown. In this study, we prepared a pair of monoclonal antibodies (mAbs) that specifically recognize the P60 protein on the cell surface of Listeria spp. The selected pair was found to be sensitive to both the P60 protein and cell body of the genus Listeria. On this basis, a rapid paper sensor was established for sensitive Listeria spp. detection. The developed paper sensor broadly cross-reacted with the 12 tested strains of Listeria and the sensitivity in PBS buffer was 10 3-10 4 colonyforming units (CFU) judged by the gray values of the test line. No cross-reaction with any other gram-positive or gram-negative strains tested was observed. A study using milk samples showed that this paper sensor could detect samples contaminated with low levels of the tested Listeria spp. (1-9 CFU/mL) after 8 h of enrichment and further concentrate for approximately 10 times by centrifugation. The results were in accordance with those obtained using the polymerase chain reaction method.

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“…Surface enhanced Raman spectroscopy (SERS), as an important spectroscopic analytical method, is widely used in chemical analysis . It can provide a high sensitivity due to the physical and chemical enhancement environment .…”

Section: Introductionmentioning

confidence: 99%

Rapid detection of six phosphodiesterase type 5 enzyme inhibitors in healthcare products using thin‐layer chromatography and surface enhanced Raman spectroscopy combined with BP neural network

Fang

Han

et al. 2017

J of Separation Science

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A novel facile method for the detection of the phosphodiesterase type 5 enzyme inhibitors added illegally into health products was established using thin-layer chromatography and surface enhanced Raman spectroscopy combined with BP neural network. When the detection conditions were optimized in detail, a repetitive adding procedure of silver colloids with the total amount keeping constant was used to improve the enhancement effect of surface enhanced Raman spectroscopy. According to the main Raman peaks and the retention factor of analyte, the data predictive model was established. Under the optimized experimental conditions, this method was successful to apply to detect the artificially produced model samples, and the limit of detection less than 5 mg/kg was obtained. Based on the excellent sensitivity of this method, the real samples have been detected accurately and the detection results were confirmed by high-performance liquid chromatography. In addition, the developed method was suitable for the detection of other adulterants, especially those that have similar chromatographic or spectroscopic behaviors.

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SERS encoded nanoparticle heterodimers for the ultrasensitive detection of folic acid

Cited by 48 publications

References 32 publications

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO₂@Au@Ag using SERS

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO₂@Au@Ag using SERS

Gold nanoparticle-based paper sensor for multiple detection of 12 Listeria spp. by P60-mediated monoclonal antibody

Rapid detection of six phosphodiesterase type 5 enzyme inhibitors in healthcare products using thin‐layer chromatography and surface enhanced Raman spectroscopy combined with BP neural network

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SERS encoded nanoparticle heterodimers for the ultrasensitive detection of folic acid

Cited by 48 publications

References 32 publications

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO2@Au@Ag using SERS

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO2@Au@Ag using SERS

Gold nanoparticle-based paper sensor for multiple detection of 12 Listeria spp. by P60-mediated monoclonal antibody

Rapid detection of six phosphodiesterase type 5 enzyme inhibitors in healthcare products using thin‐layer chromatography and surface enhanced Raman spectroscopy combined with BP neural network

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Rapid detection of hexamethylenetetramine based on the substrate UC@SiO₂@Au@Ag using SERS

Rapid detection of hexamethylenetetramine based on the substrate UC@SiO₂@Au@Ag using SERS