Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11746-006-5021-2
Title: Extraction and purification of oryzanol from rice bran oil and rice bran oil soapstock
Authors: Narayan, A.V.
Barhate, R.S. 
Raghavarao, K.S.M.S.
Keywords: By-product utilization
Extraction
Impurities
Oryzanol
Processing
Purification
Rice
Rice bran
Rice bran oil
Rice bran oil soapstock
Issue Date: Aug-2006
Source: Narayan, A.V., Barhate, R.S., Raghavarao, K.S.M.S. (2006-08). Extraction and purification of oryzanol from rice bran oil and rice bran oil soapstock. JAOCS, Journal of the American Oil Chemists' Society 83 (8) : 663-670. ScholarBank@NUS Repository. https://doi.org/10.1007/s11746-006-5021-2
Abstract: Oryzanol is an important value-added co-product of the rice and rice bran-refining processes. The beneficial effects of oryzanol on human health have generated global interest in developing facile methods for its separation from rice bran oil soapstock, a by-product of the chemical refining of rice bran oil. In this article we discuss the isolation of oryzanol and the effect that impurities have on its extraction and purification. Presented are the principles behind the extraction (solid-liquid or liquid-liquid extraction, and other methods) of these unit operations covered in selected patents. Methods other than extraction such as crystallization or precipitation-based or a combination of these unit operations also are reviewed. The problems encountered and the ways to solve them during oryzanol extraction, such as prior processing and compositional variation in soapstock, resistance to mass transfer, moisture content and the presence of surface active components, which cause emulsion formation, are examined. Engineering inputs required for solving problems such as saponification, increasing mass transfer area, and drying methods are emphasized. Based on an analysis of existing processes, those having potential to work in large-scale extraction processes are presented. Copyright © 2006 by AOCS Press.
Source Title: JAOCS, Journal of the American Oil Chemists' Society
URI: http://scholarbank.nus.edu.sg/handle/10635/68239
ISSN: 0003021X
DOI: 10.1007/s11746-006-5021-2
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

19
checked on Dec 11, 2017

WEB OF SCIENCETM
Citations

14
checked on Dec 11, 2017

Page view(s)

61
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.