Research Article Open Access

Effect of Germination on γ-Oryzanol Content of Selected Sarawak Rice Cultivars

Sie-Cheong Kiing1, Pang-Hung Yiu2, Amartalingam Rajan2 and Sie-Chuong Wong2
  • 1 , Afganistan
  • 2 ,
American Journal of Applied Sciences
Volume 6 No. 9, 2009, 1658-1661

DOI: https://doi.org/10.3844/ajassp.2009.1658.1661

Submitted On: 30 April 2009 Published On: 30 September 2009

How to Cite: Kiing, S., Yiu, P., Rajan, A. & Wong, S. (2009). Effect of Germination on γ-Oryzanol Content of Selected Sarawak Rice Cultivars . American Journal of Applied Sciences, 6(9), 1658-1661. https://doi.org/10.3844/ajassp.2009.1658.1661

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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Keywords

  • rice
  • Oryza sativa L.
  • γ-oryzanol
  • Sarawak