In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts

To overcome the problem of aflatoxins (AF) in Thai foods, a sensitive in-house direct cELISA using monoclonal antibody (mAb) was established and compared with a commercial ELISA kit and thin-layer chromatography for the determination of AFB1 levels in corn and peanuts. Among eight in-house mAbs (AF1...

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Main Authors: Lipigorngoson S., Limtrakul P., Suttajit M., Yoshizawa T.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-0142125348&partnerID=40&md5=e77a30132dbbb5642dc0fff36bf9c7d6
http://cmuir.cmu.ac.th/handle/6653943832/2919
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-29192014-08-30T02:25:33Z In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts Lipigorngoson S. Limtrakul P. Suttajit M. Yoshizawa T. To overcome the problem of aflatoxins (AF) in Thai foods, a sensitive in-house direct cELISA using monoclonal antibody (mAb) was established and compared with a commercial ELISA kit and thin-layer chromatography for the determination of AFB1 levels in corn and peanuts. Among eight in-house mAbs (AF1-8), AF5 was used in the direct cELISA owing to its excellent specificity and sensitivity with the detection limit of 4 μg kg-1. The recovery of AFB1 spiked at 5, 10, 20, 40 and 80 μg kg-1 ranged from 88.1 to 99.5 %. Correlation coefficients of the ELISA with the commercial ELISA kit and thin-layer chromatography were 0.912 and 0.802 for corn, and 0.941 and 0.832 for peanuts, respectively (p < 0.05). The cost per sample was estimated to be about 16 times lower than the commercial ELISA kit. Subsequently, the in-house direct cELISA was successfully applied to screen the contamination of AFB1 in Thai corn and peanuts. Mean levels of AFB1 (per cent positive were 73 μg kg-1 (85.7%) in corn and 102 μg kg-1 (67.9%) in peanuts, for which 46.4% of both foods were above the Thailand regulation limit (20 μg kg-1). 2014-08-30T02:25:33Z 2014-08-30T02:25:33Z 2003 Article 0265203X 10.1080/0265203031000156060 13129779 FACOE http://www.scopus.com/inward/record.url?eid=2-s2.0-0142125348&partnerID=40&md5=e77a30132dbbb5642dc0fff36bf9c7d6 http://cmuir.cmu.ac.th/handle/6653943832/2919 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description To overcome the problem of aflatoxins (AF) in Thai foods, a sensitive in-house direct cELISA using monoclonal antibody (mAb) was established and compared with a commercial ELISA kit and thin-layer chromatography for the determination of AFB1 levels in corn and peanuts. Among eight in-house mAbs (AF1-8), AF5 was used in the direct cELISA owing to its excellent specificity and sensitivity with the detection limit of 4 μg kg-1. The recovery of AFB1 spiked at 5, 10, 20, 40 and 80 μg kg-1 ranged from 88.1 to 99.5 %. Correlation coefficients of the ELISA with the commercial ELISA kit and thin-layer chromatography were 0.912 and 0.802 for corn, and 0.941 and 0.832 for peanuts, respectively (p < 0.05). The cost per sample was estimated to be about 16 times lower than the commercial ELISA kit. Subsequently, the in-house direct cELISA was successfully applied to screen the contamination of AFB1 in Thai corn and peanuts. Mean levels of AFB1 (per cent positive were 73 μg kg-1 (85.7%) in corn and 102 μg kg-1 (67.9%) in peanuts, for which 46.4% of both foods were above the Thailand regulation limit (20 μg kg-1).
format Article
author Lipigorngoson S.
Limtrakul P.
Suttajit M.
Yoshizawa T.
spellingShingle Lipigorngoson S.
Limtrakul P.
Suttajit M.
Yoshizawa T.
In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts
author_facet Lipigorngoson S.
Limtrakul P.
Suttajit M.
Yoshizawa T.
author_sort Lipigorngoson S.
title In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts
title_short In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts
title_full In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts
title_fullStr In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts
title_full_unstemmed In-house direct cELISA for determining aflatoxin B1 in Thai corn and peanuts
title_sort in-house direct celisa for determining aflatoxin b1 in thai corn and peanuts
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-0142125348&partnerID=40&md5=e77a30132dbbb5642dc0fff36bf9c7d6
http://cmuir.cmu.ac.th/handle/6653943832/2919
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