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Tocopherol and tocotrienol contents of different varieties of rice in Malaysia


Shammugasamy, Balakrishnan and Ramakrishnan, Yogeshini and Mohd Ghazali, Hasanah and Syed Muhammad, Sharifah Kharidah (2015) Tocopherol and tocotrienol contents of different varieties of rice in Malaysia. Journal of the Science of Food and Agriculture, 95 (4). pp. 672-678. ISSN 0022-5142; ESSN: 1097-0010


BACKGROUND: The present study examined the contents of tocopherols and tocotrienols and their distribution in 58 different varieties of whole rice cultivated in Malaysia. The analytical method used was saponification of samples followed by dispersive liquid-liquid microextraction and reverse phase high-performance liquid chromatography. RESULTS: The total vitamin E contents of different varieties of whole rice ranged between 19.36 and 63.29 mg kg⁻¹. Contents of vitamin E isomers varied among rice varieties both within and between grain color groups. Black-pigmented rice showed significantly higher mean contents of α-tocopherol, β-tocopherol and α-tocotrienol than non-pigmented rice and red-pigmented rice. Red-pigmented rice had significantly lower mean contents of γ-tocotrienol and total vitamin E than non-pigmented rice. The mean contents of δ-tocotrienol and total vitamin E in non-pigmented rice, however, were similar to those in black-pigmented rice. γ-Tocotrienol was the predominant form of vitamin E isomer in all analyzed varieties. The Pearson correlations among vitamin E isomers and total vitamin E content of whole rice were also studied. CONCLUSION: This study provides information on vitamin E content of different rice varieties that would be beneficial for decision making in genetic breeding of bioactive compound-rich rice varieties.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
DOI Number: https://doi.org/10.1002/jsfa.6742
Publisher: Wiley
Keywords: Tocopherol; Tocotrienol; Rice varieties; Malaysia; Microextraction
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 11 Feb 2016 04:21
Last Modified: 11 Feb 2016 04:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1002/jsfa.6742
URI: http://psasir.upm.edu.my/id/eprint/35862
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