Document Detail


Influence of selected lab cultures on the evolution of free amino acids, free fatty acids and Fiore Sardo cheese microflora during the ripening.
MedLine Citation:
PMID:  18206779     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fiore Sardo Protected Denomination of Origin is a traditional Sardinian (Italy) hard cheese produced exclusively from whole raw ovine milk and coagulated with lamb rennet paste. Currently, Fiore Sardo is still produced by shepherds at the farmhouse level without the addition of any starter culture and the cheese-making process is characterized by significant waste. The first objective of the present work was to investigate the autochthonous microflora present in milk and Fiore Sardo cheese in order to select lactic acid bacterial (LAB) cultures with suitable cheese-making attributes and, possibly reduce the production waste. Secondly, the ability of selected cultures to guarantee cheese healthiness and quality was tested in experimental cheese-making trials. In this study, we show that the typical lactic microflora of raw ewe's milk and Fiore Sardo cheese is mostly composed of mesophilic LAB such as Lactococcus lactis subsp. lactis, Lactobacillus plantarum and Lactobacillus casei subsp. casei. Moreover, strains belonging to the species were selected for cheese-making attributes and used in experimental cheese-making trials carried out in different farms producing Fiore Sardo. The evolution of the cheese microflora, free amino acids and free fatty acids during the ripening showed that the experimental cheeses were characterized by a balanced ratio of the chemical constituents, by a reduced number of spoilage microorganisms and, remarkably, by the absence of production waste that were significant for the control cheeses.
Authors:
Nicoletta P Mangia; Marco A Murgia; Giovanni Garau; Maria G Sanna; Pietrino Deiana
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-10-12
Journal Detail:
Title:  Food microbiology     Volume:  25     ISSN:  1095-9998     ISO Abbreviation:  Food Microbiol.     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-01-21     Completed Date:  2008-02-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8601127     Medline TA:  Food Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  366-77     Citation Subset:  IM    
Affiliation:
Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-alimentari, Università degli Studi di Sassari, V. le Italia 39, 07100 Sassari, Italy.
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MeSH Terms
Descriptor/Qualifier:
Amino Acids / analysis*
Animals
Cheese / analysis*,  microbiology*
Colony Count, Microbial
Fatty Acids, Nonesterified / analysis*
Food Handling / methods*
Food Microbiology
Humans
Italy
Lactobacillus / growth & development*,  metabolism
Milk / microbiology
Sheep
Chemical
Reg. No./Substance:
0/Amino Acids; 0/Fatty Acids, Nonesterified

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