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Enhanced oxidase mimic activity of raspberry-like N-doped Mn 3 O 4 with oxygen vacancies for efficient colorimetric detection of gallic acid coupled with smartphone.

التفاصيل البيبلوغرافية
العنوان: Enhanced oxidase mimic activity of raspberry-like N-doped Mn 3 O 4 with oxygen vacancies for efficient colorimetric detection of gallic acid coupled with smartphone.
المؤلفون: Zhou T; College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China., Chen D; College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China., Li H; College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China., Ge D; College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China. Electronic address: gedanhua@njtech.edu.cn., Chen X; College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China. Electronic address: chenxj@njtech.edu.cn.
المصدر: Food chemistry [Food Chem] 2024 Jul 30; Vol. 447, pp. 138919. Date of Electronic Publication: 2024 Mar 01.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 7702639 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7072 (Electronic) Linking ISSN: 03088146 NLM ISO Abbreviation: Food Chem Subsets: MEDLINE
أسماء مطبوعة: Publication: Barking : Elsevier Applied Science Publishers
Original Publication: Barking, Eng., Applied Science Publishers.
مواضيع طبية MeSH: Oxidoreductases*/chemistry , Rubus*, Oxygen ; Colorimetry/methods ; Gallic Acid ; Smartphone ; Hydrogen Peroxide
مستخلص: The content of gallic acid (GA) is positively correlated with the quality grade of tea. Here, we developed a colorimetric method based on raspberry-like N-doped Mn 3 O 4 nanospheres (N-Mn 3 O 4 NSs) with oxidase-like activity for GA assay. Modulating the electronic structure of Mn 3 O 4 by N doping could promote the catalysis ability, and the produced oxygen vacancies (OVs) can provide high surface energy and abundant active sites. The N-Mn 3 O 4 NSs presented low Michaelis-Menten constant (K m ) of 0.142 mM and maximum initial velocity (V max ) of 9.8 × 10 -6  M s -1 . The sensor exhibited excellent analytical performance towards GA detection, including low LOD (0.028 μM) and promising linear range (5 ∼ 30 μM). It is attributed that OVs and O 2 - participated in TMB oxidation. Based on the reaction color changes, a visualized semi-quantitative GA detection could be realized via a smartphone-based system. It could be applied for evaluating GA quality in market-purchased black tea and green tea.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: Colorimetric sensor; Gallic acid; N-doped Mn(3)O(4) nanospheres; Oxidase-like activity; Smartphone-based colorimetric platform
المشرفين على المادة: EC 1.- (Oxidoreductases)
S88TT14065 (Oxygen)
632XD903SP (Gallic Acid)
BBX060AN9V (Hydrogen Peroxide)
تواريخ الأحداث: Date Created: 20240307 Date Completed: 20240410 Latest Revision: 20240410
رمز التحديث: 20240410
DOI: 10.1016/j.foodchem.2024.138919
PMID: 38452538
قاعدة البيانات: MEDLINE
الوصف
تدمد:1873-7072
DOI:10.1016/j.foodchem.2024.138919