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Changes on free amino acids during the alcoholic fermentation of strawberry and persimmon
Author(s) -
Callejón Raquel M.,
Ubeda Cristina,
Hidalgo Claudio,
Mas Albert,
Troncoso Ana M.,
Morales M. Lourdes
Publication year - 2015
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.12661
Subject(s) - fermentation , food science , amino acid , chemistry , free amino nitrogen , proline , wine , malolactic fermentation , ethanol fermentation , yeast , yeast in winemaking , biochemistry , biology , saccharomyces cerevisiae , lactic acid , bacteria , genetics
Summary Changes in amino acids and ammonium were monitored during the alcoholic fermentation of strawberry and persimmon purees. Fermentations were carried out either by autochthonous or by commercial yeasts. The amino acid content in strawberry and persimmon was lower than that of grapes but enough to successfully perform the alcoholic fermentation, showing a different consumption pattern. Arginine, although is not present in the most strawberry substrates, appears in strawberry wines (2.75–3.36 mg L −1 ). Additionally, as opposed to grape wine, an exceptional high consumption of proline was observed during the alcoholic fermentation of strawberry purees. The consumption of amino acids was highly influenced by the substrate and the S. cerevisiae strain used for the fermentation process. These results were confirmed by principal component analysis, which was able to group the samples based on substrate, harvest or yeast strain, considering the amino acids as variables.