Document Detail


Sterol oxidation in ready-to-eat infant foods during storage.
MedLine Citation:
PMID:  18167071     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of storage on sterol oxidation of ready-to-eat infant foods was evaluated. Two different liquid infant foods (honey or fruits flavors), prepared with milk and cereals, were stored for 0, 2, 4, 7 and 9 months at 25 degrees C. Sterol oxidation products (SOP) were isolated by cold saponification, purified by silica solid-phase extraction, and analyzed by gas chromatography (GC) and GC-mass spectrometry. beta-Sitosterol was the most representative sterol, followed by cholesterol and campesterol. No significant differences in the total and single SOP content (0.8-1 mg/kg of product) were observed with respect to storage time and type of sample; the main SOP found was 7-ketositosterol (<0.2 mg/kg of product). The extent of stigmasterol oxidation (2.9%) was higher than that of cholesterol (1.9%) and beta-sitosterol (1.4%). The type and quality of raw materials, as well as the processing conditions, seem to greatly influence SOP formation and accumulation in infant foods.
Authors:
Guadalupe García-Llatas; Luisito Cercaci; Maria Teresa Rodriguez-Estrada; M Jesús Lagarda; Rosaura Farré; Giovanni Lercker
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-01-01
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  56     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2008-01-21     Completed Date:  2008-04-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  469-75     Citation Subset:  IM    
Affiliation:
Area de Nutrición y Bromatología, Universitat de València, Avda. Vicent Andrés Estellés s/n, 46100 Burjassot-Valencia, Spain.
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MeSH Terms
Descriptor/Qualifier:
Cholesterol / analogs & derivatives,  analysis
Fatty Acids / analysis
Food Preservation*
Infant Food / analysis*
Oxidation-Reduction
Phytosterols / analysis
Sitosterols / analysis
Sterols / chemistry*
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Phytosterols; 0/Sitosterols; 0/Sterols; 474-62-4/campesterol; 57-88-5/Cholesterol; 5779-62-4/sitosterol

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