中国水产科学研究院机构知识库

Magnetic metal-organic frameworks as adsorbents for the detection of azo pigments in food matrices

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文献类型：外文期刊

作者： Cheng, Lei ¹ ; Huang, Rong ¹ ; Cao, Qiang ² ; Liu, Na ² ; Li, Peiyi ² ; Sun, Mengmeng ² ; Qin, Haiyang ² ; Wu, Lidong ² ;

作者机构： 1.Beijing Technol & Business Univ BTBU, Beijing Engn & Technol Res Ctr Food Addit, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Beijing 100048, Peoples R China

2.Chinese Acad Fishery Sci, Key Lab Control Qual & Safety Aquat Prod, Minist Agr & Rural Affairs, Beijing 100141, Peoples R China

3.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China

关键词： Selective separation; New coccine; Lemon yellow; HPLC-MS

期刊名称：FOOD CHEMISTRY （影响因子：8.8；五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2023 年 402 卷

页码：

收录情况： SCI

摘要： Azo pigments with azo functional groups (-N--N-) are commonly used in foods. Through rational design, here we report synthesis of a novel magnetic metal-organic framework (MOF-545) and the use of Fe3O4@MOF-545 for the selective separation of azo pigments from beverages. We find that Fe3O4@MOF-545 exhibits excellent adsorption/removal capacities for new coccine (NC, 459 mg g-1) and lemon yellow (LY, 476 mg g-1) individ-ually. The results indicated that the adsorption capacities of Fe3O4@MOF-545 were 5 times higher than reported previously. The large surface area (120.4 m2/g) and the suitable pore size (1.6 nm) of Fe3O4@MOF-545 provided multiple accessible channels for azo pigment adsorption. The adsorption kinetics, stability, recovery, and reus-ability of Fe3O4@MOF-545 were all reported. The recoveries ranged from 92.9 to 104.5%, reflecting the capacity of MOF-545 to efficiently separate NC and LY. Fe3O4@MOF-545 is suitable for azo pigment determination and separation in food matrices.

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