Evolución de la proteólisis durante la maduración de quesos Danbo elaborados con distintos cultivos iniciadores

Authors

  • Luis Alberto Panizzolo Cátedra de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Uruguay
  • Ana Claudia Araújo Cátedra de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Uruguay
  • Laura Vanina Taroco Cátedra de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Uruguay
  • Analía Rodríguez Cátedra de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Uruguay
  • Gonzalo Schöpf Jucar Ltda, Nueva Helvecia, Colonia, Uruguay

DOI:

https://doi.org/10.26461/06.05

Keywords:

Queso, Danbo, proteólisis, fracciones nitrogenadas

Abstract

The determination of soluble nitrogen at pH 4.6 (NNC), nitrogen soluble in trichloroacetic acid (12 %) (NTCA) and nitrogen soluble in phosphotungstic acid (5 %) (NPTA) is used as an index of cheese ripening because it provides tailored information to the global extent of proteolysis. The formation of peptides and amino acids during cheese ripening contributes directly to the development of cheese flavor and texture, hence the importance of knowing whether the use of different starter cultures generate differences in the development of proteolysis. The aim of this paper is to study the proteolytics changes during ripening of Danbo cheeses which were manufactured with starter cultures that differ in the ratio of their microorganisms components: batch A, 60 % Streptococcus thermophilus subsp. thermophilus – 40 % (Lactococcus lactis subsp. lactis + Lactococcus lactis subsp. cremo-ris) and batch B, 50 % Streptococcus thermophilus subsp. thermophilus – 50 % (Lactococcus lactis subsp. lactis + Lactococcus lactis subsp. cremoris). Cheeses were analyzed at 0, 15, 30 and 45 days of ripening by determination of moisture content, pH, ni-trogen content in cheese and nitrogen content of nitrogenous fractions. The batch made with a higher ratio of mesophilic cultures (Lactococcus lactis subsp. lactis and Lactococcus lactis subsp. cremoris), batch B, presented the highest primary proteolysis and highest formation of oligopeptides and free amino acids.

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How to Cite

Panizzolo, L. A., Araújo, A. C., Taroco, L. V., Rodríguez, A., & Schöpf, G. (2011). Evolución de la proteólisis durante la maduración de quesos Danbo elaborados con distintos cultivos iniciadores. INNOTEC, (6 ene-dic), 24–27. https://doi.org/10.26461/06.05

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