Researchers use green gold to rapidly detect and identify harmful bacteria

A study published in Advanced Healthcare Materials, researchers from the College of Food, Agricultural and Natural Resource Sciences and the College of Science and Engineering at UMN have developed a method to screen and identify harmful or antibiotic-resistant bacteria within one hour using chemiluminescence and a portable luminometer. The new technology was tested by analyzing surface swabs and urine samples for the presence of small concentrations of methicillin-resistant Staphylococcus aureus (MRSA). To screen for microorganisms, green gold in the form of triangular nanoplates was combined with a reducing agent and luminol. This caused a strong chemiluminescent reaction that was stable for as long as 10 minutes. When researchers introduced MRSA and other microorganisms into the combination, they consumed the gold nanoplates, causing the chemiluminescent intensity to decrease proportionally to the microbial concentration, indicating the presence of microorganisms. Researchers also introduced a new concept called microbial macromolecular shielding to specifically identify MRSA. A polymer specific to MRSA was added to the same sample where it engulfed and surrounded the MRSA bacteria, preventing them from consuming the gold nanoplates. This increased chemiluminescence intensity, indicating the presence of MRSA. @ https://phys.org/news/2018-08-green-gold-rapidly-bacteria.html" rel="nofollow noopener noreferrer" target="_blank">https://phys.org/news/2018-08-green-gold-rapidly-bacteria.html
Researchers use green gold to rapidly detect and identify harmful bacteria

Researchers from the University of Minnesota (UMN) have developed a method to screen and identify harmful or antibiotic-resistant bacteria within one hour using a portable luminometer. Traditional diagnostic methods often require complex equipment and lab work that can take days. The new method uses chemiluminescence, or the emission of light during a chemical reaction. It was developed with the food industry in mind and could also be used in healthcare settings.

No comments

Leave a Reply