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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Vegetable oil of poor quality is limiting the success of fortification with vitamin A in Egypt
Food and Nutrition Bulletin, Volume 33, No. 3, Year 2012
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Description
Background. Fortification of vegetable oil with vitamin A is considered a cost-effective and simple to implement strategy, but the stability of vitamin A remains a limiting factor. To account for losses of vitamin A, oil producers add an overage. Optimizing the amount of this overage can result in considerable savings for industry and government while ensuring a supply of adequately fortified oil to consumers. Objectives. To estimate vitamin A losses in oil with different chemical characteristics. Methods. Samples of fortified oils with different chemical characteristics were collected from two Egyptian companies (oil A and B) and stored for 1 month. Vitamin A levels were analyzed periodically during storage to determine losses over time, and peroxide values were determined. Results. Fortified oil B, with a high peroxide value (5.8 mEq/kg), exposed to sunlight had significantly higher losses of vitamin A after 4 weeks than fortified oil A, with a low peroxide value (0.4 mEq/kg): 31.1% vs. 19.7% (p < .001), respectively. In semidark conditions, the vitamin A losses after 4 weeks in fortified oil B and fortified oil A were significantly different: 26.1% and 0.7% (p < .001), respectively. In an accelerated storage test, the vitamin A loss in 8 days was 48.3% for fortified oil B and 4.2% for fortified oil A (p < .001). Conclusions. This study shows a significant effect of peroxide level (one indicator of the quality of oil) on the stability of vitamin A, regardless of storage conditions. To optimize and sustain vitamin A levels in fortified oil, governments and industries should minimize the peroxide level to less than 2 mEq/kg at production. © 2012, The United Nations University.
Authors & Co-Authors
Laillou, Arnaud
Switzerland, Geneva
Global Alliance for Improved Nutrition
Hafez, Saeb A.
Egypt, Giza
Food Technology Research Institute Ftri
Mahmoud, Amal H.
Egypt, Giza
Agricultural Research Center
Rohner, Fabian
Switzerland, Geneva
Global Alliance for Improved Nutrition
Fortin, Sonia
France, Montpellier
Direction Recherche et Dèvelopment
Berger, Jacques
France, Montpellier
Direction Recherche et Dèvelopment
Ibrahim, Nabih A.
Egypt, Giza
Food Technology Research Institute Ftri
Moench-Pfanner, Regina
Switzerland, Geneva
Global Alliance for Improved Nutrition
Statistics
Citations: 38
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1177/156482651203300303
ISSN:
03795721
Study Locations
Egypt