Optical biosensor for the detection of low concentrations of hydrogen peroxide in milk samples

• Type: Article in International Conference Proceedings Book
• Date: 2022

Authors

Vasconcelos, H (Author) Other; Matias, A (Author) Other; Mendes, J (Author) Other; Arahjo, J (Author) Other; Dias, B (Author) Other; Jorge, PAS (Author) FCUP; Saraivaa, C (Author) Other; Coelho, LCC (Author) FCUP; de Almeida, JMMM (Author) FCUP

Conference proceedings International

Title: OPTICAL SENSING AND DETECTION VII

Conference on Optical Sensing and Detection VII Part of SPIE Photonics Europe Conference

ELECTR NETWORK, APR 03-MAY 15, 2022

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 2 Citations

Other information

Authenticus ID: P-00W-T06

DOI: 10.1117/12.2621552

Abstract (EN): A strategy for the detection of H2O2 as a milk adulterant using a single shot membrane sensor, is presented. Direct quantitative evaluation of H2O2 in raw, skimmed, semi-skimmed and whole milk was carried out based on a chemiluminescence reaction with luminol. For H2O2 water solutions a linear response was attained from 0.0001% to 0.007 %w/w, with a limit of detection of 3x10(-5) %w/w. A coefficient of determination, R-2, greater than 0.97 was achieved, with a relative standard deviation (RSD) not exceeding 10%. In the analyzed milk samples, the lowest H2O2 concentration detected was 0.001% w/w for raw and for skim milk and 0.002%w/w for, semi-skimmed and whole milk. The presented method is original, sensitive, rapid, and cost-effective. Due to the achieved sensitivity the method has great potential to be used for H2O2 detection in diverse areas, such as environmental monitoring and food quality.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6