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Open AccessArticle

An Effective Ostrich Oil Bleaching Technique Using Peroxide Value as an Indicator

School of Medicine and Health Sciences, Monash University, Sunway Campus, 46150, Malaysia
Faculty of Medicine and Health, International Medical University, 57000, Kuala Lumpur, Malaysia
SIRIM Bhd, 1, Persiaran Dato Menteri, 40911, Shah Alam, Selangor Darul Ehsan, Malaysia
Allergy and Immunology Research Centre, Institute for Medical Research, 50586, Kuala Lumpur, Malaysia
Author to whom correspondence should be addressed.
Molecules 2011, 16(7), 5709-5719;
Received: 29 April 2011 / Revised: 7 June 2011 / Accepted: 27 June 2011 / Published: 5 July 2011
(This article belongs to the Section Natural Products Chemistry)
Ostrich oil has been used extensively in the cosmetic and pharmaceutical industries. However, rancidity causes undesirable chemical changes in flavour, colour, odour and nutritional value. Bleaching is an important process in refining ostrich oil. Bleaching refers to the removal of certain minor constituents (colour pigments, free fatty acid, peroxides, odour and non-fatty materials) from crude fats and oils to yield purified glycerides. There is a need to optimize the bleaching process of crude ostrich oil prior to its use for therapeutic purposes. The objective of our study was to establish an effective method to bleach ostrich oil using peroxide value as an indicator of refinement. In our study, we showed that natural earth clay was better than bentonite and acid-activated clay to bleach ostrich oil. It was also found that 1 hour incubation at a 150 °C was suitable to lower peroxide value by 90%. In addition, the nitrogen trap technique in the bleaching process was as effective as the continuous nitrogen flow technique and as such would be the recommended technique due to its cost effectiveness. View Full-Text
Keywords: crude ostrich oil; temperature; time; peroxide value; clay crude ostrich oil; temperature; time; peroxide value; clay
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Palanisamy, U.D.; Sivanathan, M.; Radhakrishnan, A.K.; Haleagrahara, N.; Subramaniam, T.; Chiew, G.S. An Effective Ostrich Oil Bleaching Technique Using Peroxide Value as an Indicator. Molecules 2011, 16, 5709-5719.

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