scholarly journals A novel strategy for sensitive and rapid detection of ascorbic acid via the Tyndall effect of cobalt hydroxide nanoflakes

RSC Advances ◽  
2021 ◽  
Vol 11 (62) ◽  
pp. 39306-39310
Author(s):  
Qian Gao ◽  
Jing Wan ◽  
Xuejiang Chen ◽  
Xiaomei Mo ◽  
Yao Sun ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Rapid Detection ◽  
Sensitive Detection ◽  
Cobalt Hydroxide ◽  
Tyndall Effect ◽  
Novel Strategy

A novel colorimetric nanosensor was initially developed for the equipment-free sensitive detection of ascorbic acid based on the Tyndall effect of cobalt hydroxide nanoflakes.

scholarly journals Dual-emission ratio fluorescence for selective and sensitive detection of ferric ions and ascorbic acid based on one-pot synthesis of glutathione protected gold nanoclusters

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17283-17290
Author(s):  
Shuai Zhang ◽  
Cong Zhang ◽  
Xiaodong Shao ◽  
Rentian Guan ◽  
Yingying Hu ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Gold Nanoclusters ◽  
Sensitive Detection ◽  
Dual Fluorescence ◽  
Ferric Ions ◽  
Fluorometric Method ◽  
One Pot ◽  
Dual Emission ◽  
One Pot Synthesis

A fluorometric method was proposed for the determination of Fe3+ and ascorbic acid (AA) based on blue and red dual fluorescence emissions of glutathione (GSH) stabilized-gold nanoclusters (AuNCs).

Ascorbic Acid-Loaded Apoferritin-Assisted Carbon Dot-MnO2 Nanocomposites for the Selective and Sensitive Detection of Trypsin

2018 ◽  
Vol 1 (3) ◽  
pp. 777-782 ◽  
Author(s):  
Qingqing Tan ◽  
Ruirui Zhang ◽  
Weisu Kong ◽  
Fengli Qu ◽  
Limin Lu
Keyword(s):  
Ascorbic Acid ◽  
Sensitive Detection ◽  
Carbon Dot

A novel ratiometric electrochemical biosensor for sensitive detection of ascorbic acid

2017 ◽  
Vol 242 ◽  
pp. 625-631 ◽  
Author(s):  
Li Wang ◽  
Coucong Gong ◽  
Yuan Shen ◽  
Wenhui Ye ◽  
Mengli Xu ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Electrochemical Biosensor ◽  
Sensitive Detection

A Nanomaterial-Based Biosensor for the Quantitative Detection of Enrofloxacin Residues in Raw Chicken

2020 ◽  
Vol 63 (6) ◽  
pp. 1869-1878
Author(s):  
Yafang Shen ◽  
Yawen He ◽  
Yingchun Fu ◽  
Jianping Wang ◽  
Jianmin Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Supply Chain ◽  
Rapid Detection ◽  
Chicken Meat ◽  
Sensitive Detection ◽  
Quantitative Detection ◽  
List Type ◽  
Potential Hazard ◽  
Immunomagnetic Beads ◽  
Sulfosalicylic Acid

HighlightsA nanobiosensor was developed for rapid detection of enrofloxacin residues in chicken meat.5-Sulfosalicylic acid was adopted in a facile method for pretreatment of chicken meat samples.The detection limit of 14.1 µg kg-1 was below the maximum residue limit for chicken meat.The total detection time from sample pretreatment to result report was less than 1.5 h.Abstract. Antibiotic residues in animal-derived food products have been identified as a potential hazard in human health. Hence, a rapid, simple, and cost-effective method for detection of antibiotics in the food supply chain is highly desirable. The objective of this study was to develop a nanomaterial-based biosensor using immunomagnetic beads (IMBs) and quantum dots (QDs) for rapid and sensitive detection of enrofloxacin (ENR) residues in raw chicken. A 5-sulfosalicylic acid-based pretreatment method was adopted to extract ENR from chicken meat and reduce non-specific adsorption caused by complex food matrices. Two sensing elements were designed and fabricated: antibody functionalized IMBs and ENR-bovine serum albumin (BSA) conjugates modified QDs (QDs-BSA-ENR). Target ENR in samples was first captured and separated by IMBs, and then QDs-BSA-ENR, serving as a competitor and detection probe, was used to react with the residual binding sites on the IMB surfaces. With the presence of captured ENR, the binding of QDs-BSA-ENR to IMBs was competitively inhibited. Finally, the fluorescence intensity of reporting QDs in the QDs-BSA-ENR-IMBs complex at a wavelength of 614 nm was measured for the quantitation of target antibiotics. Under the optimum conditions, the proposed method allowed sensitive detection of ENR in a linear range from 1 to 100 ng mL-1 with a limit of detection (LOD) of 0.94 ng mL-1. The LOD for spiked chicken meat was 14.1 µg kg-1, which was below the maximum residue limits (MRLs) regulated in China and the European Union. The whole analytical procedure from food sampling to result report could be finished in less than 1.5 h. This nanobiosensor showed high potential for rapid and low-cost detection of ENR residues in the poultry supply chain to enhance food safety. Keywords: Enrofloxacin, Immunomagnetic beads, Nanobiosensor, Poultry, Quantum dots, Rapid detection.

A fluorescent sensor based on ovalbumin-modified Au nanoclusters for sensitive detection of ascorbic acid

2015 ◽  
Vol 7 (10) ◽  
pp. 4123-4129 ◽  
Author(s):  
Yanxia Li ◽  
Yiting Chen ◽  
Lu Huang ◽  
Liang Ma ◽  
Qi Lin ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Fluorescent Sensor ◽  
Gold Nanoclusters ◽  
Sensitive Detection ◽  
Au Nanoclusters

In this paper, ovalbumin (OVA) stabilized gold nanoclusters (OVA-Au NCs) were used as sensing probes for ascorbic acid (AA) detection.

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