首页|A novel AgNPs/MOF substrate-based SERS sensor for high-sensitive on-site detection of wheat gluten
A novel AgNPs/MOF substrate-based SERS sensor for high-sensitive on-site detection of wheat gluten
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Gluten,known as the major allergen in wheat,has gained increasing concerns in industrialized countries,resulting in an urgent need for accurate,high-sensitive,and on-site detection of wheat gluten in complex food systems.Herein,we proposed a silver nanoparticles(AgNPs)/metal-organic framework(MOF)substrate-based surface-enhanced Raman scattering(SERS)sensor for the high-sensitive on-site detection of wheat gluten.The detection occurred on the newly in-situ synthesized AgNPs/MOF-modified SERS substrate,providing an enhancement factor(EF)of 1.89 × 105.Benefitting from the signal amplification function of AgNPs/MOF and the superiority of SERS,this sensor represented high sensitivity performance and a wide detection range from 1 × 10-15 mol/L to 2 × 106 mol/L with a detection limit of 1.16 × 10-16 mol/L,which allowed monitoring the trace of wheat gluten in complex food system without matrix interference.This reliable sandwich SERS sensor may provide a promising platform for high-sensitive,accurate,and on-site detection of allergens in the field of food safety.
Linglin Fu、Yanzhuo Du、Jinru Zhou、Huan Li、Minzi Wang、Yanbo Wang
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Food Safety Key Laboratory of Zhejiang Province,School of Food Science and Biotechnology,Zhejiang Gongshang University,Hangzhou 310018,China
Zhejiang Engineering Research Institute of Food & Drug Quality and Safety,School of Management and E-Business,Zhejiang Gongshang University,Hangzhou 310018,China
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