Phytochemical Composition of Oryza sativa (Rice) Bran Oil Bodies in Crude and Purified Isolates

Nantiyakul, Nantaprapa; Furse, Samuel; Fisk, Ian; Foster, Timothy J.; Tucker, Gregory; Gray, David A.

Abstract

We describe a procedure for isolating and purifying oil bodies (OBs) from Oryza sativa bran, and present evidence that strongly suggests a physical association between the OB organelles and several antioxidant phytochemicals (c-oryzanol and several tocochromanols). This suggestion arises from work showing that despite comprehensive washing steps (9 M urea, water), the majority of the tocotrienols and tocopherols (77 and 73 %, respectively) and oryzanols (91 %) remain integral to the oil bodies, not being released unless the latter are sacrificed. This in turn provides a valuable comparison with similar analyses of tocochromanols in other plant species, as well as indicating that rice bran, normally a waste product from the rice industry, may provide a valuable source of antioxidants as well as protein and unsaturated fat. © AOCS 2012.

• Journal Article Type: Article
• Acceptance Date: Apr 20, 2012
• Online Publication Date: May 19, 2012
• Publication Date: 2012-10
• Deposit Date: Aug 10, 2021
• Publicly Available Date: Aug 10, 2021
• Journal: JAOCS, Journal of the American Oil Chemists' Society
• Print ISSN: 0003-021X
• Electronic ISSN: 1558-9331
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 89
• Issue: 10
• Pages: 1867-1872
• DOI: https://doi.org/10.1007/s11746-012-2078-y
• Public URL: https://nottingham-repository.worktribe.com/output/3125809
• Publisher URL: https://aocs.onlinelibrary.wiley.com/doi/abs/10.1007/s11746-012-2078-y
• Additional Information: This is the peer reviewed version of the following article: Nantiyakul, N., Furse, S., Fisk, I., Foster, T.J., Tucker, G. and Gray, D.A. (2012), Phytochemical Composition of Oryza sativa (Rice) Bran Oil Bodies in Crude and Purified Isolates. J Am Oil Chem Soc, 89: 1867-1872., which has been published in final form at https://doi.org/10.1007/s11746-012-2078-y. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.