Document Detail


Quality, stability and radical scavenging activity of olive oils after Chetoui olives (Olea europaea L.) storage under modified atmospheres.
MedLine Citation:
PMID:  22859649     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
At the industrial scale, the major source of olive oil deterioration is the poor handling of the raw material during the time separating harvesting from processing. The objective of this work was to verify the effect of modified atmospheres and cold storage in relation to quality parameters of the extracted oils. Olives (cv Chétoui) intended for oil extraction, were stored for 21 days at two different temperatures (ambient temperature 14 ± 2 °C and 5 °C) and under two different modified atmospheres 21% O(2) - 0% CO(2) and 2% O(2) - 5% CO(2). Oils quality was ascertained with analytical parameters: free fatty acids, peroxide value, K (232), K (270) as suggested by European regulation. Oxidative stability, total phenols content, radical scavenging activity and fatty acids composition were carried out in order to measure the hydrolytic and oxidative degradation of oils. Olive oils quality parameters were significantly affected by treatments with especially a beneficial effect on primary oxidation indicators and free acidity. Most efficient treatments, with regard to oils phenolic content and involved parameters, were 21% O(2) - 0% CO(2) at ambient temperature (636.25 mg ca/kg) and 2% O(2) - 5% CO(2) under 5 °C (637.50 mg ca/kg). Those two treatments improved individually oil samples phenolic content of 25% but not at the same storage period.
Authors:
L Ben Yahia; B Baccouri; Y Ouni; S Hamdi
Related Documents :
12771329 - Chlorogenic acid bioavailability largely depends on its metabolism by the gut microflor...
3360879 - Determination of benzoic acid and hippuric acid in human plasma and urine by high-perfo...
1424159 - Identification of urinary metabolites of (+/-)-2-(p-isobutylphenyl)propionic acid (ibup...
7370309 - The metabolic fate of 14c-labeled peptidoglycan monomer in mice. i. identification of t...
19866959 - The acid intoxication of diabetes in its relation to prognosis.
21549829 - Oxidative stress in human lymphocytes treated with fatty acid mixture: role of caroteno...
23140499 - Diversity of phenolic profiles in the fruit skin of prunus domestica plums and related ...
22444809 - Effects of dietary incorporation of different antioxidant extracts and free-range reari...
1597179 - Purification and characterization of a thermostable carboxypeptidase from the extreme t...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Food science and technology international = Ciencia y tecnología de los alimentos internacional     Volume:  18     ISSN:  1082-0132     ISO Abbreviation:  Food Sci Technol Int     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-08-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889534     Medline TA:  Food Sci Technol Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  353-65     Citation Subset:  IM    
Affiliation:
1High School of Food Industry of Tunisia, Laboratory of Preservation and Valorisation of Food Products, Tunis 1003, Tunisie.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Development of Quality Index Method for anchovy (Engraulis anchoita) stored in ice: Assessment of it...
Next Document:  Physicochemical and sensory properties of yogurt enriched with microencapsulated fish oil.