Document Detail

Effect of emulsifiers and fortification methods on light stability of vitamin A in milk.
MedLine Citation:
PMID:  2384615     Owner:  NLM     Status:  MEDLINE    
Lowfat milk is commercially fortified during processing by adding small quantities of oil containing an emulsifier and vitamin A. Added vitamin A is degraded more rapidly than indigenous vitamin A when milk is exposed to light. The objective of this research was to determine if added vitamin A could be made as stable to light as naturally occurring vitamin A by placing it in the more dilute milk fat environment with naturally occurring emulsifiers. Using HPLC to quantify retinyl palmitate, the effect of emulsifiers indigenous to milk versus a commercial emulsifier was first investigated. Butter serum, rich in fat globule membrane material, was compared with Durfax 80 in a 1% recombined milk system. No difference was found in vitamin A stability to light due to emulsifier type. A second experiment on 1% milk compared light stability of vitamin A added in concentrated milk fat emulsion, vitamin A added to all the milk fat, and indigenous vitamin A. Indigenous vitamin A and vitamin A added to all the fat were equally stable and more stable than vitamin A added in a concentrated milk fat emulsion.
B P Bartholomew; L V Ogden
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  73     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1990 Jun 
Date Detail:
Created Date:  1990-09-18     Completed Date:  1990-09-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1485-8     Citation Subset:  IM    
Department of Food Science and Nutrition, Brigham Young University, Provo, UT 84602.
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MeSH Terms
Drug Stability
Excipients / pharmacology*
Food, Fortified*
Milk / metabolism*
Vitamin A / metabolism*
Reg. No./Substance:
0/Excipients; 11103-57-4/Vitamin A

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