Journal
FERMENTATION-BASEL
Volume 8, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/fermentation8080382
Keywords
Sir iz misine; cheese in a lambskin sack; ripening; proteolysis; probiotic bacteria; Lactobacillus plantarum B; Lactococcus lactis subsp; lactis S1
Funding
- Marko Marulic Polytechnic of Knin, Petra Kresimira, Knin, Croatia
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This study found that autochthonous probiotic bacteria Lactobacillus plantarum B and Lactococcus lactis subsp. lactis S1 have significant effects on proteolysis during the ripening of Sir iz misine cheese. The addition of Lactobacillus plantarum B alone or in combination with Lactococcus lactis subsp. lactis S1 increased the alpha and beta indices, improving the texture and ripening properties of the cheese.
This study aims to determine the effects of the autochthonous probiotic bacteria Lactobacillus plantarum B (currently Lactiplantibacillus plantarum) and Lactococcus lactis subsp. lactis S1 on proteolysis during the ripening of Sir iz misine-a Croatian cheese which ripens in a lambskin sack. Sir iz misine was produced in four different variants: (1) from raw milk without starter cultures, and from pasteurized milk with added (2) Lactococcus lactis ssp. lactis S1, (3) Lactobacillus plantarum B, or (4) a starter culture consisting of a mixture of Lactococcus lactis ssp. lactis S1 and Lactobacillus plantarum B (1:1). The addition of Lactobacillus plantarum B alone or in combination with Lactococcus lactis subsp. lactis S1 noticeably increased the alpha and beta indices because of the synergistic activity between the enzymes responsible for primary proteolysis and added autochthonous bacteria. Cheese produced from raw milk had the lowest (12.16%) content of WSN%TN. The highest WSN%TN content was found in cheese produced with combined probiotic bacteria (30.40%) and Lactococcus lactis ssp. lactis S1 (29.74%). Cheese with added combined probiotic bacteria had a noticeably higher content of TCA-SN%TN, indicating a synergistic performance among autochthonous probiotic bacteria. In conclusion, autochthonous probiotic bacteria, in addition to having a functional value, can improve the ripening properties of cheese.
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