Title of article
Protease activity of Oenococcus oeni viable cells on red wine nitrogenous macromolecular fraction in presence of SO2 and ethanol
Author/Authors
Mar??a C. Manca de Nadra، نويسنده , , Marta E. Far??as، نويسنده , , Encarnaci?n Pueyo، نويسنده , , M. Carmen Polo ، نويسنده ,
Issue Information
ماهنامه با شماره پیاپی سال 2005
Pages
4
From page
851
To page
854
Abstract
The protease activity of Oenococcus oeni X2L viable cells on red wine nitrogenous macromolecular fraction (NMF) as sole nitrogen source was determined. The enzyme releases growth factors for Oenococcus oeni. In presence of SO2 and ethanol the rate of amino acids liberation was twofold higher. A peptide peak analyzed by HPLC with a retention time of 47 min diminishes markedly during the first 2 h incubation. O. oeni X2L living cells are able to produce the exoprotease and to act on the red wine NMF in the presence of SO2 and ethanol releasing essential amino acids for its survival.
Keywords
Growth factors , Oenococcus oeni , Nitrogenous macromolecular fraction , Red wine , Proteolytic activity
Journal title
Food Control
Serial Year
2005
Journal title
Food Control
Record number
975686
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