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- W3215291529 abstract "The detection of nitrite is of great significance because it is closely related to food safety. In this work, a rapid colorimetric method was developed for nitrite detection based on the reaction of propylene glycol alginate (PGA) gel interface. In the reaction of nitrite and 4-Aminoacetophenone, diazo compound formed, which could be further transformed to purplish red compound by reacting with N-(1-Naphthyl)ethylenediamine (NED). Nitrite exhibited a linear relationship with the grayscale of the gel interface in the range of 0.3-9 μg mL-1 with a detection limit of 0.3 μg mL-1. The method was applied to detect nitrite in four types of pickled vegetables with recovery of 80.9-119.02% and relative standard deviation of 0.11-6.73%. Notably, the detection process can be accomplished within 5 min. The proposed colorimetric method exhibited advantages of simplicity, quickness and sensitivity, showing potential application prospects for the real-time and on-site detection of nitrite in pickled vegetables." @default.
- W3215291529 created "2021-12-06" @default.
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- W3215291529 date "2022-03-01" @default.
- W3215291529 modified "2023-10-06" @default.
- W3215291529 title "A novel propylene glycol alginate gel based colorimetric tube for rapid detection of nitrite in pickled vegetables" @default.
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- W3215291529 doi "https://doi.org/10.1016/j.foodchem.2021.131678" @default.
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