1. Using a random laser to measure the content of protein in skim milk
- Author
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Suely dos Santos Araújo, Marcus V. A. Prado, Luis M. G. Abegão, Alessandra A. C. Pagani, José Joatan Rodrigues, Sérgio C. Zílio, and Márcio A. R. C. Alencar
- Subjects
Electrical and Electronic Engineering ,Engineering (miscellaneous) ,Atomic and Molecular Physics, and Optics - Abstract
The luminescence of skim milk samples with distinct protein content doped with rhodamine B was investigated. The samples were excited by a nanosecond laser tuned at 532 nm, and the emission was characterized as a random laser. Its features were analyzed as a function of the protein aggregate content. The results showed a linear correlation between the random laser peak intensity and the protein content. This paper proposes a rapid detection photonic method to evaluate the protein content in skim milk based on the intensity of the random laser emission.
- Published
- 2023