PMID- 35819336 OWN - NLM STAT- MEDLINE DCOM- 20220728 LR - 20230728 IS - 1520-5118 (Electronic) IS - 0021-8561 (Print) IS - 0021-8561 (Linking) VI - 70 IP - 29 DP - 2022 Jul 27 TI - Detection of Acrylamide in Foodstuffs by Nanobody-Based Immunoassays. PG - 9179-9186 LID - 10.1021/acs.jafc.2c01872 [doi] AB - Acrylamide is toxic aliphatic amide formed via the Maillard reaction between asparagine and reducing sugars during thermal processing of food. Herein, a specific nanobody termed Nb-7E against the acrylamide derivative xanthyl acrylamide (XAA) was isolated from an immunized phage display library and confirmed to be able to detect acrylamide. First, an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) was established for acrylamide with a limit of detection (LOD) of 0.089 mug/mL and working range from 0.23 to 5.6 mug/mL. Furthermore, an enhanced electrochemical immunoassay (ECIA) was developed based on the optimized reaction conditions. The LOD was as low as 0.033 mug/mL, threefold improved compared to that of ic-ELISA, and a wider linear detection range from 0.39 to 50.0 mug/mL was achieved. The average recoveries ranged from 88.29 to 111.76% in spiked baked biscuits and potato crisps. Finally, the analytical performance of the ECIA was validated by standard ultraperformance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). FAU - Liang, Yifan AU - Liang Y AD - Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China. FAU - Zeng, Yuyao AU - Zeng Y AD - Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China. FAU - Luo, Lin AU - Luo L AD - Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China. FAU - Xu, Zhenlin AU - Xu Z AUID- ORCID: 0000-0002-1197-4615 AD - Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China. AD - Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China. FAU - Shen, Yudong AU - Shen Y AD - Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China. FAU - Wang, Hong AU - Wang H AUID- ORCID: 0000-0001-9136-8959 AD - Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China. AD - Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China. FAU - Hammock, Bruce D AU - Hammock BD AUID- ORCID: 0000-0003-1408-8317 AD - Department of Entomology and Nematology, UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States. LA - eng GR - P42 ES004699/ES/NIEHS NIH HHS/United States PT - Journal Article DEP - 20220712 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 20R035KLCI (Acrylamide) SB - IM MH - *Acrylamide/analysis MH - Chromatography, Liquid MH - Enzyme-Linked Immunosorbent Assay/methods MH - Food Contamination/analysis MH - *Tandem Mass Spectrometry/methods PMC - PMC10111249 MID - NIHMS1890005 OTO - NOTNLM OT - ELISA OT - acrylamide OT - electrochemical immunoassay OT - nanobody COIS- The authors declare no competing financial interest. EDAT- 2022/07/13 06:00 MHDA- 2022/07/29 06:00 PMCR- 2023/07/27 CRDT- 2022/07/12 10:12 PHST- 2022/07/13 06:00 [pubmed] PHST- 2022/07/29 06:00 [medline] PHST- 2022/07/12 10:12 [entrez] PHST- 2023/07/27 00:00 [pmc-release] AID - 10.1021/acs.jafc.2c01872 [doi] PST - ppublish SO - J Agric Food Chem. 2022 Jul 27;70(29):9179-9186. doi: 10.1021/acs.jafc.2c01872. Epub 2022 Jul 12.