Effects of High Pressure on Proteolytic Enzymes in Cheese: Relationship with the Proteolysis of Ewe Milk Cheese

a) Principal components (PC) analysis plot defined by PC 1 and PC 2 showing the distribution of enzymatic activity [lactate dehydrogenase (LDH), aminopeptidase, chymosin, and plasmin] and proteolysis variables [residual caseins, hydrophobic and hydrophilic peptides and their ratio, and total free amino acids (FAA)]. b) Distribution of 60-d-old cheeses in the plane defined by PC 1 and PC 2. Control (+), 2P (□, ■), 3P (▵, ▴), 4P (♢, ♦), and 5P (○, ●) cheeses. Open symbols represent P1 cheeses; closed symbols represent P15 cheeses. Leu-p-NA = leucine-p-nitroanilide.

a) Principal components (PC) analysis plot defined by PC 1 and PC 3 showing the distribution of enzymatic activity [lactate dehydrogenase (LDH), aminopeptidase, chymosin, and plasmin] and proteolysis variables [residual caseins, hydrophobic and hydrophilic peptides and their ratio, and total free amino acids (FAA)]. b) Distribution of 60-d-old cheeses in the plane defined by PC 1 and PC 3. Control (+), 2P (□, ■), 3P (▵, ▴), 4P (♢, ♦), and 5P (○, ●) cheeses. Open symbols represent P1 cheeses; closed symbols represent P15 cheeses. Leu-p-NA = leucine-p-nitroanilide.