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Title

Influence of the yeast strain on the changes of the amino acids, peptides and proteins during sparkling wine production by the traditional method

AuthorsMartínez-Rodríguez, Adolfo J. ; Carrascosa, Alfonso V. ; Martín-Álvarez, Pedro J. ; Moreno-Arribas, M. Victoria ; Polo, María Carmen
Keywordssparkling wine
yeast
amino acids
peptides
proteins
second fermentation
Issue Date2002
PublisherSpringer
CitationJournal of Industrial Microbiology & Biotechnology. 2002. 20 (6) : 314-322
AbstractThe influence of five yeast strains on the nitrogen fractions, amino acids, peptides and proteins, during 12 months of aging of sparkling wines produced by the traditional or Champenoise method, was studied. High-performance liquid chromatography (HPLC) techniques were used for analysis of the amino acid and peptide fractions. Proteins plus polypeptides were determined by the colorimetric Bradford method. Four main stages were detected in the aging of wines with yeast. In the first stage, a second fermentation took place; amino acids and proteins plus polypeptides diminished, and peptides were liberated. In the second stage, there was a release of amino acids and proteins, and peptides were degraded. In the third stage, the release of proteins and peptides predominated. In the fourth stage, the amino acid concentration diminished. The yeast strain used influenced the content of free amino acids and peptides and the aging time in all the nitrogen fractions.
Publisher version (URL)http://dx.doi.org/10.1038/sj.jim.7000323
URIhttp://hdl.handle.net/10261/11653
DOI10.1038/sj.jim.7000323
ISSN1367-5435
Appears in Collections:(IFI) Artículos
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