An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders

Twenty samples of Thai clay from fourteen provinces and seven commercial toxin binders were investigated for their adsorption capacity of aflatoxin B1 (AFB1) in vitro. Each sample of 5 mg/l AFB1 solution was shaken at 25°C for 24 hours and supernatants of centrifuged samples were analyzed for concen...

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Main Authors: Tengjaroenkul B., Tengjaroenkul U., Pumipuntu N., Pimpukdee K., Wongtangtintan S., Saipan P.
Format: Article
Published: Chulalongkorn University 2015
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http://cmuir.cmu.ac.th/handle/6653943832/38724
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-387242015-06-16T07:54:04Z An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders Tengjaroenkul B. Tengjaroenkul U. Pumipuntu N. Pimpukdee K. Wongtangtintan S. Saipan P. Veterinary (all) Twenty samples of Thai clay from fourteen provinces and seven commercial toxin binders were investigated for their adsorption capacity of aflatoxin B1 (AFB1) in vitro. Each sample of 5 mg/l AFB1 solution was shaken at 25°C for 24 hours and supernatants of centrifuged samples were analyzed for concentrations of AFB1 using a UV spectrophotometer. Adsorption capacity was calculated and applied to isothermic equations. The results indicated that Thai clays was capable of sequestering AFB1 from aqueous solution differently and Thai clay from Lopburi and Lamphun provinces had the highest adsorption capacity, similar to commercial binders. S-shaped isothermic curves were observed for all samples having adsorption capacity greater than 4 × 10-3 mol/kg. These isothermic data were fitted using a modified Freundlich model that suggested that the samples possessed multilayered or multiple adsorption sites for the toxin. The clay from Lopburi and Lamphun had maximum adsorption capacity (Qmax) of 4.76 × 10-3 mol/kg and 4.68 × 10-3 mol/kg, respectively, whereas the commercial binders had Qmax that ranged from 4.38 × 10-3 mol/kg to 5.07 × 10-3 mol/kg. Inductive couple plasma spectrometry and X-ray diffraction spectrometry of the clay samples demonstrated that the clay from Lopburi and Lamphun contained montmorillonite as a major component, similar to the bentonites. It was concluded that Thai clay from Lopburi and Lamphun provinces could absorb AFB1 in vitro efficiently, similar to commercial toxin binders. 2015-06-16T07:54:04Z 2015-06-16T07:54:04Z 2013-01-01 Article 01256491 2-s2.0-84897932710 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84897932710&origin=inward http://cmuir.cmu.ac.th/handle/6653943832/38724 Chulalongkorn University
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Veterinary (all)
spellingShingle Veterinary (all)
Tengjaroenkul B.
Tengjaroenkul U.
Pumipuntu N.
Pimpukdee K.
Wongtangtintan S.
Saipan P.
An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders
description Twenty samples of Thai clay from fourteen provinces and seven commercial toxin binders were investigated for their adsorption capacity of aflatoxin B1 (AFB1) in vitro. Each sample of 5 mg/l AFB1 solution was shaken at 25°C for 24 hours and supernatants of centrifuged samples were analyzed for concentrations of AFB1 using a UV spectrophotometer. Adsorption capacity was calculated and applied to isothermic equations. The results indicated that Thai clays was capable of sequestering AFB1 from aqueous solution differently and Thai clay from Lopburi and Lamphun provinces had the highest adsorption capacity, similar to commercial binders. S-shaped isothermic curves were observed for all samples having adsorption capacity greater than 4 × 10-3 mol/kg. These isothermic data were fitted using a modified Freundlich model that suggested that the samples possessed multilayered or multiple adsorption sites for the toxin. The clay from Lopburi and Lamphun had maximum adsorption capacity (Qmax) of 4.76 × 10-3 mol/kg and 4.68 × 10-3 mol/kg, respectively, whereas the commercial binders had Qmax that ranged from 4.38 × 10-3 mol/kg to 5.07 × 10-3 mol/kg. Inductive couple plasma spectrometry and X-ray diffraction spectrometry of the clay samples demonstrated that the clay from Lopburi and Lamphun contained montmorillonite as a major component, similar to the bentonites. It was concluded that Thai clay from Lopburi and Lamphun provinces could absorb AFB1 in vitro efficiently, similar to commercial toxin binders.
format Article
author Tengjaroenkul B.
Tengjaroenkul U.
Pumipuntu N.
Pimpukdee K.
Wongtangtintan S.
Saipan P.
author_facet Tengjaroenkul B.
Tengjaroenkul U.
Pumipuntu N.
Pimpukdee K.
Wongtangtintan S.
Saipan P.
author_sort Tengjaroenkul B.
title An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders
title_short An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders
title_full An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders
title_fullStr An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders
title_full_unstemmed An in vitro comparative study of aflatoxin B1 adsorption by thai clay and commercial toxin binders
title_sort in vitro comparative study of aflatoxin b1 adsorption by thai clay and commercial toxin binders
publisher Chulalongkorn University
publishDate 2015
url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84897932710&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/38724
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