A dispersive solid-phase extraction method for the determination of Aristolochic acids in Houttuynia cordata based on MIL-101(Fe): An analytes-oriented adsorbent selection design. (1st May 2023)

• Record Type: Journal Article
• Authors: Cheng, Rui; Mao, Xuejin; Yu, Jiaying; Liu, Fan; Guo, Lan; Luo, Dongmei; Wan, Yiqun
• Is Part Of: Food chemistry. Volume 407(2023)
• Publication Date: 2023-05-01
• Subjects: MIL-101(Fe) -- Aristolochic acid I -- Aristolochic acid II -- Houttuynia cordata -- Dispersive solid-phase extraction; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.135074
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: MIL-101(Fe) was selected as a new sorbent for AA detection in Houttuynia cordata by an analytes-oriented considering. The adsorption interactions between MIL-101(Fe) and AA-I & AA-II were studied. Quantum chemical calculation and XPS spectrum were introduced into the adsorption mechanism investigation. Quantification limits were lower than allowable limit stipulated by Chinese Pharmacopoeia. Abstract: In view of the molecular structure of Aristolochic acid I (AA-I) and Aristolochic acid II (AA-II), MIL-101(Fe) was selected as the sorbent to develop a dispersive solid-phase extraction (d-SPE) method for capturing the two analytes from Houttuynia cordata. The interactions between the sorbent and analytes were investigated by FT-IR, XPS and UV–Vis DRS spectra. The optimized method demonstrated good linearity with R 2 > 0.9999. The limit of detections (LODs) were 0.007 mg/L and 0.014 mg/L for AA-I and AA-II, respectively, lower than the limit stipulated by Chinese Pharmacopoeia (0.001 %, w/w). The recoveries for AA-I and AA-II were within the range of 73.3–106.4 %. The precisions of intra-day and inter-day were 0.9–5.8 % and 2.1–5.8 %, respectively. Thus, the established method demonstrated to be efficient and reliable to determine AA-I and AA-II in Houttuynia cordata.