In this paper, we developed cysteamine-modified surface-enhanced Raman scattering (SERS) substrate for detecting detect trace amount of acidic pigment that shows weak affinity with gold nanoparticles (Au NPs). To realize sensitive and reproducible detection of pigment with weak affinity, the SERS substrate was prepared by attaching cysteamine (CA) to the Au NPs, the acidic pigment molecule could rapidly reached to the surface of Au NPs because of the formation of multi‑hydrogen-bond and electrostatic interaction between the pigment and CA molecule. The proposed method allowed us to detect five kinds of acidic pigment with a limit of 1.0 ppm, which is below the strictest safety limit. Compared with the previous methods, the advantages of the present substrate were its simple substrate preparation, high reproducibility and good universality. Furthermore, the reliable and enough accurate results had been obtained by using of the proposed substrates in the assay of trace pigment in real samples.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.saa.2019.01.007 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clay-catalyzed ozonation of Norfloxacin - Effects of metal cation and degradation rate on aqueous media toxicity towards Lemna minor.
Chemosphere
January 2025
Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C 3P8, Canada; École de technologie supérieure, Montréal (Québec), Canada, H3C 1K3. Electronic address:
Article Synopsis
- Norfloxacin was ozonized in clay suspensions to study its toxicity on Lemna minor, which helps assess antibiotic impact in environments with clay.
- The study found that norfloxacin causes toxicity in Lemna minor through oxidative stress, worsened by ozonation, affecting growth and chlorophyll levels.
- Results indicate that the type of clay catalyst and the oxidation process influence the toxicity outcomes, revealing the potential formation of more harmful byproducts from the antibiotic.
Metal Ion Supplementation to Boost Melanin Production by .
Int J Mol Sci
January 2025
Department of Chemical Sciences, Università degli Studi di Napoli Federico II, Monte sant'Angelo Campus, Via Cintia 4, 80126 Naples, Italy.
As Streptomycetes might produce melanin to survive in stressful environmental conditions, like under metal exposure, supplementing metal ions to the growth medium could be a wise strategy for boosting the production of the pigment. The aim of this study was to test, for the first time, the possibility of boosting DSM40314 melanin biosynthesis by adding to the growth medium singularly or, at the same time, different concentrations (1.0, 1.
View Article and Find Full Text PDFCircadian- and Light-Driven Rhythmicity of Interconnected Gene Networks in Olive Tree.
Int J Mol Sci
January 2025
Research Centre for Olive, Fruit and Citrus Crops, Council for Agricultural Research and Economics (CREA), Via Settimio Severo 83, 87036 Rende, CS, Italy.
A circadian clock (CC) has evolved in plants that synchronizes their growth and development with daily and seasonal cycles. A properly functioning circadian clock contributes to increasing plant growth, reproduction, and competitiveness. In plants, continuous light treatment has been a successful approach for obtaining novel knowledge about the circadian clock.
View Article and Find Full Text PDFSelected Metabolites of Biofunctional Importance from Edible Fruits of Forest Shrubs.
Molecules
December 2024
Department of Chemistry, Poznań University of Life Sciences, 60-637 Poznan, Poland.
This study focused on determining the content of bioactive compounds in selected fruits of wild shrubs. The plants selected for the study were from the Rosaceae and Adoxaceae families. Particular attention should be paid to the fruits of plants commonly growing in Poland (temperate climate), such as , , and .
View Article and Find Full Text PDFsp. nov., a bacterium isolated from the roots of the aquatic plant .
Int J Syst Evol Microbiol
January 2025
Department of Biology, Slippery Rock University, Slippery Rock, Pennsylvania, 16057, USA.
A polyphasic taxonomic study was carried out on strain T5W1, isolated from the roots of the aquatic plant . This isolate is Gram-negative, rod-shaped, motile, aerobic and non-pigmented. Nearly complete 16S rRNA gene sequence homology related the strain to , with 98.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!