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Effect of germination on γ-oryzanol content of selected Sarawak rice cultivars


Citation

Kiing, Sie Cheong and Yiu, Pang Hung and Amarthalingam, Rajan and Wong, Sie Chuong (2009) Effect of germination on γ-oryzanol content of selected Sarawak rice cultivars. American Journal of Applied Sciences, 6 (9). pp. 1658-1661. ISSN 1546-9239; ESSN: 1554-3641

Abstract

Problem statement: Rice is rich in complex carbohydrates and beneficial bioactive compounds such as γ-Aminobutyric Acid (GABA), γ-oryzanol and vitamin. Several bioactive components are known to accumulate in rice during germination process. This study was to investigate the effect of germination process on γ-oryzanol levels in selected Sarawak local rice cultivars. Approach: Rice seeds were germinated for 4, 8, 12, 16, 18, 20 or 24 h at 25°C and samples were processed and analyzed for γ-oryzanol content. A partial extraction method was used for quantitative γ- oryzanol analysis. Results: Result showed γ-oryzanol concentrations in the rice cultivars varied from 0.099-0.340 mg g-1 on dry weight basis. Cultivars Udang Halus and Silah showed the highest concentration of γ-oryzanol after 16 h germination. Conclusion: The germination process exhibited diverse effects on the γ-oryzanol accumulation in rice and it was cultivar dependent.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture and Food Sciences
DOI Number: https://doi.org/10.3844/ajassp.2009.1658.1661
Publisher: Science Publications
Keywords: Rice; Oryza sativa L.; γ-oryzanol; Sarawak
Depositing User: Norhazura Hamzah
Date Deposited: 10 Dec 2013 07:03
Last Modified: 28 Nov 2017 09:28
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3844/ajassp.2009.1658.1661
URI: http://psasir.upm.edu.my/id/eprint/14252
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