4.7 Article

A fluorescent biosensor based on catalytic activity of platinum nanoparticles for freshness evaluation of aquatic products

期刊

FOOD CHEMISTRY
卷 310, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.125922

关键词

Fluorescence biosensors; Hypoxanthine; Freshness of aquatic products; Platinum nanoparticles

资金

  1. Funds of Industry and School and Research Project in Fuzhou Science and Technology Bureau [82316038]
  2. Funds of Joint Plan for Health Education in Fujian [83017000]
  3. Start-up Funds of Minjiang Scholar [510246]
  4. Foundation for Scholars of Fuzhou University [XRC-17044]
  5. Fuzhou University Testing Fund of precious apparatus [2016T005, 2018T020]

向作者/读者索取更多资源

In this study, a fluorescence biosensor based on the peroxidase mimicking activity of platinum nanoparticles (Pt NPs) was fabricated for rapid detection of hypoxanthine (Hx), which is a sensitive indicator of the freshness of aquatic products. The fluorescence intensity of the sensing system had a linear relationship with the concentration of Hx in the range of 8-2500 mu M, and the limit of detection was as low as 2.88 mu M (S/N = 3). Moreover, benefiting from the excellent selectivity of the biosensor, Hx content in fish, shrimp and squid samples could be quickly detected with good recovery rates (103.94-109.00%). And the Pt NPs used in the biosensor was reusable, which was proved by the recovery rate was only slightly decreased to 91% after three cycles. In addition to the advantages of facile preparation and low cost, the proposed biosensor will be a promising candidate for rapid and convenient freshness evaluation of aquatic products.

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