Hydrogen sulfide (H2S) is a toxic gas with a characteristic rotten egg odor.Elevated levels of H2S in alcoholic beverages not only compromise their flavor but also pose health risks.Therefore, effective monitoring of H2S concentration in such products is critical.This study developed a surface-enhanced Raman scattering (SERS) nanoprobe for the rapid and sensitive detection of H2S in wine and beer.Firstly, gold nanostars (AuNSs), gold nanocubes (AuNCs), and gold nanospheres (AuNPs) were synthesized, and the donor molecule 4-nitrophenylthiophenol (4-NTP) was covalently attached to the nanoparticles via Au-S bonds to form three nanoprobes:AuNSs@4-NTP, AuNCs@4-NTP and AuNPs@4-NTP.Among them, AuNSs@4-NTP exhibited the strongest Raman enhancement and was selected as the optimal SERS nanoprobe for H2S detection.Upon exposure to H2S, the nitro group in 4-NTP was reduced to an amino group, resulting in a marked decrease in the Raman signal intensity of the nitro peak, thereby enabling sensitive detection of H2S.Experimental results demonstrated that the SERS nanoprobe exhibited a good linear response to H2S over the concentration range of 10-200 nmol·L-1, with a detection limit of 3.24 nmol/L.The nanoprobe also exhibited high specificity for H2S, with minimal interference from other substances.Furthermore, it was successfully applied to detect H2S in commercial wine and beer samples, achieving recovery rates between 97.54% and 101.78%, highlighting its practical applicability.
ZHANG Jiale
,
CHEN Xiaoya
,
WANG Yun
,
ZHANG Yuting
,
WANG Xiaoli
,
ZHOU Nandi
. Rapid and sensitive detection of hydrogen sulfide in wine and beer[J]. Food and Fermentation Industries, 2025
, 51(20)
: 326
-332
.
DOI: 10.13995/j.cnki.11-1802/ts.042179
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