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Updated: Jan 28, 2026

Author Spotlight: Enhancing Candida albicans Detection in Catheter Infections Using Fluorescent Protein Tagging
Published on: March 22, 2024
Fluorimetric Detection of Candida albicans Using Cornstalk N-Carbon Quantum Dots Modified with Amphotericin B
Abstract:
Due to the advanced fluorescence property of N-carbon quantum dots (N-CQDs), a new method to detect pathogenic fungi by newly synthesized cornstalk N-CQDs modified with water-soluble amphotericin B (N-CQDs@AmpB) was developed. Specifically, N-CQDs with blue fluorescence were initially synthesized according to a previous report and modified with amphotericin B on their surfaces. Subsequently, the as-prepared N-CQDs@AmpB was used to detect Candida albicans, exhibiting a linear range of 2.60 × 105 to 1.99 × 108 cfu/mL and a detection limit of 1124 cfu/mL. Compared with other common methods, the method largely shortened the detection time and enabled the process to be performed with minimal interference from complex samples such as beef sausage. The high cost of water-soluble amphotericin B may hamper the large-scale application of the new detection method using N-CQDs@AmpB. Thus, alcohol-soluble amphotericin B was used in subsequent experiments, confirming its potential to broaden avenues for the detection of fungi.
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The Dot Product
Dot Product
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...

