| Antioxidant system for the preservation of vitamin A in Ultra Rice. | |
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MedLine Citation:
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PMID: 19445263 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Ultra Rice grains are micronutrient-fortified, extruded rice grains designed to address specific nutritional deficiencies in populations where rice is a staple food. Vitamin A and some of the B vitamins, as well as iron and zinc, are target nutrients for fortification through Ultra Rice technology. Vitamin A is sensitive to degradation. Therefore, the original Ultra Rice formulations included stabilizers, some of which were not approved as food additives in all of the receiving markets. OBJECTIVE: To develop a new antioxidant system for improving vitamin A storage stability in Ultra Rice grains, while complying with international food regulations. METHODS: Ten formulations were prepared containing various combinations of hydrophilic and hydrophobic antioxidants, as well as moisture stabilizers. Accelerated vitamin A storage stability tests were conducted at 25 degrees, 35 degrees, and 45 degrees C with 70% to 100% relative humidity. RESULTS: The most stable samples contained one or more phenolic antioxidants, a water-soluble antioxidant, and stabilizing agents. The best results were obtained by using butylated hydroxyanisole (BHA) in combination with butylated hydroxytoluene (BHT) as the hydrophobic antioxidants and ascorbic acid as the hydrophilic antioxidant. Citric acid and sodium tripolyphosphate (STPP) were used to chelate metal ions and to stabilize moisture, respectively. The best formulations retained more than 85% and approximately 70% of the added vitamin A at 25 degrees and 45 degrees C, respectively, after 24 weeks storage. CONCLUSIONS: The best antioxidant system, composed of generally accepted food additives, improved vitamin A stability while reducing the price, thus greatly improving the commercial viability of Ultra Rice grains for use as a ricefortificant. |
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Authors:
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Yao Olive Li; Jane Lam; Levente L Diosady; Shirley Jankowski |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Food and nutrition bulletin Volume: 30 ISSN: 0379-5721 ISO Abbreviation: Food Nutr Bull Publication Date: 2009 Mar |
Date Detail:
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Created Date: 2009-05-18 Completed Date: 2009-06-11 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7906418 Medline TA: Food Nutr Bull Country: Japan |
Other Details:
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Languages: eng Pagination: 82-9 Citation Subset: IM |
Affiliation:
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Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, ON M5S 3E5, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Antioxidants
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metabolism* Ascorbic Acid / metabolism Butylated Hydroxyanisole / metabolism Butylated Hydroxytoluene / metabolism Citric Acid / metabolism Food Additives / metabolism* Food Handling / economics, methods* Food, Fortified Metals / metabolism Oryza sativa / metabolism* Phenols / metabolism Polyphosphates / metabolism Vitamin A / metabolism* Vitamin A Deficiency / prevention & control Water / physiology |
| Chemical | |
Reg. No./Substance:
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0/Antioxidants; 0/Food Additives; 0/Metals; 0/Phenols; 0/Polyphosphates; 10380-08-2/triphosphoric acid; 11103-57-4/Vitamin A; 128-37-0/Butylated Hydroxytoluene; 25013-16-5/Butylated Hydroxyanisole; 50-81-7/Ascorbic Acid; 77-92-9/Citric Acid; 7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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