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Combination of saponification and dispersive liquid–liquid microextraction for the determination of tocopherols and tocotrienols in cereals by reversed-phase high-performance liquid chromatography

Overview of attention for article published in Journal of Chromatography A, March 2013
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Title
Combination of saponification and dispersive liquid–liquid microextraction for the determination of tocopherols and tocotrienols in cereals by reversed-phase high-performance liquid chromatography
Published in
Journal of Chromatography A, March 2013
DOI 10.1016/j.chroma.2013.03.036
Pubmed ID
Authors

Balakrishnan Shammugasamy, Yogeshini Ramakrishnan, Hasanah M. Ghazali, Kharidah Muhammad

Abstract

A simple sample preparation technique coupled with reversed-phase high-performance liquid chromatography was developed for the determination of tocopherols and tocotrienols in cereals. The sample preparation procedure involved a small-scale hydrolysis of 0.5g cereal sample by saponification, followed by the extraction and concentration of tocopherols and tocotrienols from saponified extract using dispersive liquid-liquid microextraction (DLLME). Parameters affecting the DLLME performance were optimized to achieve the highest extraction efficiency and the performance of the developed DLLME method was evaluated. Good linearity was observed over the range assayed (0.031-4.0μg/mL) with regression coefficients greater than 0.9989 for all tocopherols and tocotrienols. Limits of detection and enrichment factors ranged from 0.01 to 0.11μg/mL and 50 to 73, respectively. Intra- and inter-day precision were lower than 8.9% and the recoveries were around 85.5-116.6% for all tocopherols and tocotrienols. The developed DLLME method was successfully applied to cereals: rice, barley, oat, wheat, corn and millet. This new sample preparation approach represents an inexpensive, rapid, simple and precise sample cleanup and concentration method for the determination of tocopherols and tocotrienols in cereals.

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Mendeley readers

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The data shown below were compiled from readership statistics for 36 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 36 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 8 22%
Professor 4 11%
Student > Ph. D. Student 4 11%
Student > Bachelor 3 8%
Student > Doctoral Student 2 6%
Other 6 17%
Unknown 9 25%
Readers by discipline Count As %
Chemistry 9 25%
Agricultural and Biological Sciences 7 19%
Engineering 4 11%
Chemical Engineering 2 6%
Medicine and Dentistry 1 3%
Other 1 3%
Unknown 12 33%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 05 October 2013.
All research outputs
#20,656,161
of 25,373,627 outputs
Outputs from Journal of Chromatography A
#9,537
of 11,800 outputs
Outputs of similar age
#161,740
of 210,196 outputs
Outputs of similar age from Journal of Chromatography A
#66
of 106 outputs
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