The use of regenerated immunoaffinity columns for aflatoxins B1, B2, G1 and G2 in peanut confection. 2017

Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
Center for Chemical Sciences and Bromatological, Regional Laboratory Centre - Adolfo Lutz Institute of Ribeirão Preto VI, Rua Minas, 877, CEP 14085-410, Ribeirão Preto-SP, Brazil. Electronic address: mhiha@ial.sp.gov.br.

The aim of this study was to investigate the feasibility of using multitime-regenerated immunoaffinity column (IAC) for aflatoxins B1, B2, G1 and G2 in peanut confection. After each use, the IAC was washed immediately with phosphate-buffered saline and stored for >12h prior to reuse. The evaluation procedure consisted of using extracts of naturallycontaminated peanut confection (4 replicates), aflatoxin-free peanut confection (duplicates), and aflatoxin-free peanut confection sample spiked with the 4 aflatoxins (AFT) at 3 levels in 4 replicates. Each day, 18 test extracts were analyzed using 18 designated IACs. After each use, the IACs were regenerated and reused for corresponding test extracts on the following day. This procedure was repeated daily over the course of 9days. Analytical steps included passing the test extracts through the IACs, washing the columns with water, and eluting AFT with methanol. The eluates were diluted with water and were subjected to reversed phase LC separation, post-column photochemical derivatization and fluorescence detection. After eluting AFT, IACs were immediately regenerated by washing with phosphate buffer solution and storing overnight at 8°C for re-use the following day. Results were analyzed using ANOVA and Tukey tests. The numbers of reuse varied for each AF: For AFB1 AFB2, AFG1and AFG2 could be reused for 9, 6, 6 and 0 times, respectively. According to AOAC method performance criteria, recoveries ranging from 70% to 125% are considered acceptable at the spiking levels used in this study.

UI MeSH Term Description Entries
D010367 Arachis A plant genus of the family FABACEAE that includes peanuts. Arachis hypogaea,Peanuts,Peanut
D002182 Candy Sweet food products combining cane or beet sugars with other carbohydrates and chocolate, milk, eggs, and various flavorings. In the United States, candy refers to both sugar- and cocoa-based confections and is differentiated from sweetened baked goods; elsewhere the terms sugar confectionary, chocolate confectionary, and flour confectionary (meaning goods such as cakes and pastries) are used. Confection,Caramel Candy,Candies,Candies, Caramel,Candy, Caramel,Caramel Candies,Confections
D002846 Chromatography, Affinity A chromatographic technique that utilizes the ability of biological molecules, often ANTIBODIES, to bind to certain ligands specifically and reversibly. It is used in protein biochemistry. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Chromatography, Bioaffinity,Immunochromatography,Affinity Chromatography,Bioaffinity Chromatography
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D000348 Aflatoxins Furano-furano-benzopyrans that are produced by ASPERGILLUS from STERIGMATOCYSTIN. They are structurally related to COUMARINS and easily oxidized to an epoxide form to become ALKYLATING AGENTS. Members of the group include AFLATOXIN B1; aflatoxin B2, aflatoxin G1, aflatoxin G2; AFLATOXIN M1; and aflatoxin M2. Aflatoxin
D016604 Aflatoxin B1 A potent hepatotoxic and hepatocarcinogenic mycotoxin produced by the Aspergillus flavus group of fungi. It is also mutagenic, teratogenic, and causes immunosuppression in animals. It is found as a contaminant in peanuts, cottonseed meal, corn, and other grains. The mycotoxin requires epoxidation to aflatoxin B1 2,3-oxide for activation. Microsomal monooxygenases biotransform the toxin to the less toxic metabolites aflatoxin M1 and Q1. Aflatoxin B(1),Aflatoxin B,Aflatoxin B1 Dihydrochloride, (6aR-cis)-Isomer,Aflatoxin B1, (6aR-cis)-Isomer, 14C-Labeled,Aflatoxin B1, (6aR-cis)-Isomer, 2H-Labeled,Aflatoxin B1, (6aR-cis)-Isomer, 3H-Labeled,Aflatoxin B1, cis(+,-)-Isomer,HSDB-3453,NSC-529592,HSDB 3453,HSDB3453,NSC 529592,NSC529592

Related Publications

Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
October 1968, Journal of the American Oil Chemists' Society,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
August 1988, Applied and environmental microbiology,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
January 2010, Journal of AOAC International,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
February 1982, Toxicology letters,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
March 1969, Journal of the American Oil Chemists' Society,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
January 1990, Journal - Association of Official Analytical Chemists,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
July 2006, Food additives and contaminants,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
November 2001, Food additives and contaminants,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
January 1980, IARC scientific publications,
Maria Helena Iha, and Camila Alessandra Mini, and Isaura Akemi Okada, and Rita de Cássia Briganti, and Mary W Trucksess
December 2002, Food additives and contaminants,
Copied contents to your clipboard!