Issue 13, 2019

Upconversion fluorescent nanoparticles based-sensor array for discrimination of the same variety red grape wines

Abstract

In this research, a novel fluorescent sensor array based on upconversion nanomaterials (UCNPs) for the discrimination of the same variety red grape wines from different manufacturers was developed. The sensor array was composed of six elements: one positively charged UCNPs modified with guanidine groups (UCNPs@GDN), two negatively charged UCNPs modified with sulfonic acid groups (UCNPs@SO3H) and phosphonic acid groups (UCNPs@PO(OH)2), respectively, and their mixture 1 (UCNPs@GDN + UCNPs@SO3H), mixture 2 (UCNPs@GDN + UCNPs@PO(OH)2) and mixture 3 {UCNPs@GDN + UCNPs@SO3H + UCNPs@PO(OH)2}. The discrimination mechanism is mainly attributed to the emission of those upconversion fluorescent nanoparticles being quenched by organic ingredients that usually exist in red grape wines. The discrimination of red grape wines was carried out by employing UCNPs@GDN, UCNPs@SO3H and UCNPs@PO(OH)2 in pH = 7.0 HEPES buffer, the mixture 1 and mixture 2 in pH = 9.0 PBS buffer, and mixture 3 in pH = 6.0 Tris–HCl buffer. Principal component analysis (PCA) of the data obtained from our established array showed obvious distinction among the nine red grape wines from different manufacturers. The present work is expected to inspire more marvellous research in the fields of UCNPs and red grape wines identification.

Graphical abstract: Upconversion fluorescent nanoparticles based-sensor array for discrimination of the same variety red grape wines

Supplementary files

Article information

Article type
Paper
Submitted
04 dec 2018
Accepted
22 feb 2019
First published
05 mar 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 7349-7355

Upconversion fluorescent nanoparticles based-sensor array for discrimination of the same variety red grape wines

K. Wang, Y. Li, H. Li, M. Yin, H. Liu, Q. Deng and S. Wang, RSC Adv., 2019, 9, 7349 DOI: 10.1039/C8RA09959F

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