ZHANG Jiayu, XIN Jiaying, LIU Fengyuan, et al. Detection of Calcium Peroxide in Flour by Methanobactin-Cu Simulated Peroxidase Method[J]. Science and Technology of Food Industry, 2021, 42(9): 257−262. (in Chinese with English abstract). doi: 10.13386/ j.issn1002-0306.2020060120.
Citation: ZHANG Jiayu, XIN Jiaying, LIU Fengyuan, et al. Detection of Calcium Peroxide in Flour by Methanobactin-Cu Simulated Peroxidase Method[J]. Science and Technology of Food Industry, 2021, 42(9): 257−262. (in Chinese with English abstract). doi: 10.13386/ j.issn1002-0306.2020060120.

Detection of Calcium Peroxide in Flour by Methanobactin-Cu Simulated Peroxidase Method

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  • Received Date: June 09, 2020
  • Available Online: February 04, 2021
  • By using the ultraviolet absorption spectrum to detect the change of absorption value of CaO2 at 288 nm, a fast and accurate method of CaO2 detecting in flour was established. The results showed that when the Mb-Cu concentration was 3.9×10−6 mol/L, the detection temperature was 60 ℃, and the detection time was 180 s, the CaO2 concentration was linear with the change in absorbance at 288 nm, and the linear equation was y=0.00643+0.02117x, R2=0.99281. The detection limit of the method was 1.82×10−2 mg/L, the average recovery of standard addition was 98.2%~100.6%, and the relative standard deviation RSD was 0.49%~1.32%. This Mb-Cu mimic peroxidase method has high accuracy, fast detection speed, and low detection limit. It can be used in practice for the trace detection of CaO2 in flour, providing a new strategy for the food detection industry.
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