Abstract：
:Biogenic amines (BAs) are not only well-known indicators for food freshness but can cause serious harm to the body after excessive consumption, which makes the determination of its content in food of great significance. In this work, a simple and convenient method for colorimetric detection of BAs was developed based on the sensitivity of the polymerization of dopamine to the presence of BAs on the surface of gold nanoparticles (AuNPs). Taking histamine as a representative, the system exhibited a distinct color change from wine red to black among the amine concentration of 1-100 μg/mL with the detection limit of 2.8 μg/mL. The detection system also exhibited sensitivity to other common kinds of BAs, such as putrescine, cadaverine, spermine, spermidine, tyramine, and tryptamine. Moreover, the proposed method showed encouraging performance in visual detection of the freshness of real samples, which provided a new approach for food quality and freshness evaluation.
journal_name
Talantajournal_title
Talantaauthors
Li H,Gan J,Yang Q,Fu L,Wang Ydoi
10.1016/j.talanta.2021.122706keywords:
["Biogenic amines","Colorimetric detection","Dopamine","Freshness","Gold nanoparticles"]subject
Has Abstractpub_date
2021-11-01 00:00:00pages
122706eissn
0039-9140issn
1873-3573pii
S0039-9140(21)00627-5journal_volume
234pub_type
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