An effective ostrich oil bleaching technique using peroxide value as an indicator

Palanisamy, Uma Devi, Sivanathan, Muniswaran, Radhakrishnan, Ammu Kutty, Haleagrahara, Nagajara, Subramaniam, Thavamanithevi, and Chiew, Gan Seng (2011) An effective ostrich oil bleaching technique using peroxide value as an indicator. Molecules, 16 (7). pp. 5709-5719.

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Abstract

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.

Item ID: 35871
Item Type: Article (Research - C1)
ISSN: 1420-3049
Keywords: crude ostrich oil; temperature; time; peroxide value; clay
Additional Information:

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Funders: Ministry of Health, Malaysia
Date Deposited: 28 Oct 2014 00:30
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1101 Medical Biochemistry and Metabolomics > 110107 Metabolic Medicine @ 45%
11 MEDICAL AND HEALTH SCIENCES > 1104 Complementary and Alternative Medicine > 110499 Complementary and Alternative Medicine not elsewhere classified @ 25%
11 MEDICAL AND HEALTH SCIENCES > 1115 Pharmacology and Pharmaceutical Sciences > 111501 Basic Pharmacology @ 30%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8305 Primary Animal Products > 830599 Primary Animal Products not elsewhere classified @ 30%
92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920116 Skeletal System and Disorders (incl. Arthritis) @ 45%
92 HEALTH > 9299 Other Health > 929999 Health not elsewhere classified @ 25%
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