scholarly journals Biosensors for Deoxynivalenol and Zearalenone Determination in Feed Quality Control

Toxins ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 499
Author(s):  
Krisztina Majer-Baranyi ◽  
Nóra Adányi ◽  
András Székács
Keyword(s):  
Sensitive Detection ◽  
Farm Animals ◽  
Detection Methods ◽  
Sample Treatment ◽  
Minimal Sample ◽  
Current Trends ◽  
Highly Sensitive ◽  
Feed Analysis ◽  
Highly Sensitive Detection ◽  
Analytical Tools

Mycotoxin contamination of cereals used for feed can cause intoxication, especially in farm animals; therefore, efficient analytical tools for the qualitative and quantitative analysis of toxic fungal metabolites in feed are required. Current trends in food/feed analysis are focusing on the application of biosensor technologies that offer fast and highly selective and sensitive detection with minimal sample treatment and reagents required. The article presents an overview of the recent progress of the development of biosensors for deoxynivalenol and zearalenone determination in cereals and feed. Novel biosensitive materials and highly sensitive detection methods applied for the sensors and the application of these sensors to food/feed products, the limit, and the time of detection are discussed.

A novel NIR fluorescent probe for highly sensitive detection of HNO and its application in bioimaging

2021 ◽  
Author(s):  
shenwei he ◽  
Jianming Zhu ◽  
peiyao xie ◽  
Jianfei Liu ◽  
Di Zhang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Reactive Nitrogen Species ◽  
Physiological Process ◽  
Sensitive Detection ◽  
Detection Methods ◽  
Reactive Nitrogen ◽  
Nitrogen Species ◽  
Efficient Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Nitroxyl (HNO) as an important reactive nitrogen species (RNS), which plays an important role in multiple physiological process. Therefore, it is urgent to exploit reliable and efficient detection methods for...

Gold Nanoparticle Enlargement Coupled with Fluorescence Decrease for Highly Sensitive Detection of Analytes

2011 ◽  
Vol 1301 ◽  
Author(s):  
Seong Yoon Lim ◽  
Jae Hong Kim ◽  
Joon Seok Lee ◽  
Chan Beum Park
Keyword(s):  
Gold Nanoparticles ◽  
Enzymatic Reaction ◽  
Optical Biosensor ◽  
Reducing Agents ◽  
Sensitive Detection ◽  
Detection Methods ◽  
Fluorescent Substrate ◽  
Reaction Solution ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

ABSTRACTWe present a versatile and facile route for highly sensitive detection of analytes through coupling the enlargement of gold nanoparticles (Au NPs) with fluorescence decrease. The fluorescence intensity of dye molecules (e.g., fluorescein or rhodamine B) significantly decreased with the increasing concentration of reducing agents, such as hydrogen peroxide and hydroquinone. The sensitivity for the detection of reducing agents was much higher than other detection methods based on the absorbance measurement of enlarged gold nanoparticles or quantum dot-enzyme hybridization. We could successfully detect acetylthiocholine with the detection limit of several nM orders, using an enzymatic reaction by acetylcholinesterase, a key route for the detection of toxic organophosphate compounds. The fluorescence decreasing approach described in this work requires only a simple addition of fluorescence dye to the reaction solution without any chemical modification. The strategy of fluorescence decrease coupled with nanoparticle growth will be applied on the fluorescent substrate to develop detection templates for highly sensitive optical biosensor.

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