PMID- 38472753 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240315 IS - 2304-8158 (Print) IS - 2304-8158 (Electronic) IS - 2304-8158 (Linking) VI - 13 IP - 5 DP - 2024 Feb 20 TI - Determination of Aflatoxin B(1) in Grains by Aptamer Affinity Column Enrichment and Purification Coupled with High Performance Liquid Chromatography Detection. LID - 10.3390/foods13050640 [doi] LID - 640 AB - Aflatoxin B(1) (AFB(1)) is a highly teratogenic and carcinogenic secondary metabolite produced by Aspergillus. It is commonly detected in agricultural products such as cereals, peanuts, corn, and feed. Grains have a complex composition. These complex components severely interfere with the effective extraction and separation of AFB(1), and also cause problems such as matrix interference and instrument damage, thus posing a great challenge in the accurate analysis of AFB(1). In this study, an aptamer affinity column for AFB(1) analysis (AFB(1)-AAC) was prepared for the enrichment and purification of AFB(1) from grain samples. AFB(1)-AAC with an AFB(1)-specific aptamer as the recognition element exhibited high affinity and specificity for AFB(1). Grain samples were enriched and purified by AFB(1)-AAC, and subsequently analyzed by high performance liquid chromatography with post-column photochemical derivatization-fluorescence detection (HPLC-PCD-FLD). The average recoveries of AFB(1) ranged from 88.7% to 99.1%, with relative standard deviations (RSDs) of 1.4-5.6% (n = 3) at the spiked levels of 5.0-20.0 mug kg(-1). The limit of detection (LOD) for AFB(1) (0.02 mug kg(-1)) was much below the maximum residue limits (MRLs) for AFB(1). This novel method can be applied to the determination of AFB(1) residues in peanut, corn, and rice. FAU - Ji, Cong AU - Ji C AD - College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, China. FAU - Sun, Xinyang AU - Sun X AD - College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, China. FAU - Fang, Yong AU - Fang Y AD - College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, China. FAU - Li, Peng AU - Li P AUID- ORCID: 0000-0002-1574-1341 AD - College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, China. LA - eng GR - 32072317/the National Natural Science Foundation of China/ GR - 2021YFD2100601/the National Key Research and Development Program of China/ GR - BE2021370/the Jiangsu Provincial Key Research and Development Project (Modern Agriculture)/ GR - BK20210672/the Natural Science Foundation of Jiangsu Province/ GR - QKH-ZK [2021] 073/the Guizhou Basic Research Program (Science and Technology Foundation)/ GR - KF-2023001/the Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regu-lation/ PT - Journal Article DEP - 20240220 PL - Switzerland TA - Foods JT - Foods (Basel, Switzerland) JID - 101670569 PMC - PMC10930453 OTO - NOTNLM OT - HPLC OT - aflatoxin B1 OT - aptamer OT - grain OT - purification COIS- All authors declare that they have no conflict of interest. EDAT- 2024/03/13 06:46 MHDA- 2024/03/13 06:47 PMCR- 2024/02/20 CRDT- 2024/03/13 01:16 PHST- 2024/01/11 00:00 [received] PHST- 2024/02/07 00:00 [revised] PHST- 2024/02/16 00:00 [accepted] PHST- 2024/03/13 06:47 [medline] PHST- 2024/03/13 06:46 [pubmed] PHST- 2024/03/13 01:16 [entrez] PHST- 2024/02/20 00:00 [pmc-release] AID - foods13050640 [pii] AID - foods-13-00640 [pii] AID - 10.3390/foods13050640 [doi] PST - epublish SO - Foods. 2024 Feb 20;13(5):640. doi: 10.3390/foods13050640.