By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Physics have been published. According to news originating from Mysore, India, by NewsRx correspondents, research stated, "Considering the fact that polyphenols have versatile activity in-vivo, its detection and quantification is very much important for a healthy diet. Laccase enzyme can convert polyphenols to yield mono/polyquinones which can quench Quantum dots fluorescence."
Our news journalists obtained a quote from the research from Research Institute, "This phenomenon of charge transfer from quinones to QDs was exploited as optical labels to detect polyphenols. CdTe QD may undergo dipolar interaction with quinones as a result of broad spectral absorption due to multiple excitonic states resulting from quantum confinement effects. Thus, 'turn-off' fluorescence method was applied for ultrasensitive detection of polyphenols by using laccase. We observed proportionate quenching of QDs fluorescence with respect to polyphenol concentration in the range of 100 g to 1 ng/mL. Also, quenching of the photoluminescence was highly efficient and stable and could detect individual and total polyphenols with high sensitivity (LOD-1 ng/mL). Moreover, proposed method was highly efficient than any other reported methods in terms of sensitivity, specificity and selectivity."
According to the news editors, the research concluded: "Therefore, a novel optical sensor was developed for the detection of polyphenols at a sensitive level based on the charge transfer mechanism."
For more information on this research see: Quantum dots as optical labels for ultrasensitive detection of polyphenols. Biosensors & Bioelectronics, 2014;57():317-23. (Elsevier - www.elsevier.com; Biosensors & Bioelectronics - www.elsevier.com/wps/product/cws_home/405913)
The news correspondents report that additional information may be obtained from USA. Akshath, Fermentation Technology and Bioengineering Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India. Additional authors for this research include L.R. Shubha, P. Bhatt and M.S Thakur (see also Physics).
Keywords for this news article include: Asia, India, Mysore, Quantum Dots, Quantum Physics.
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