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Lactobacillus helveticus is a gram-positive, lactic-acid producing, rod-shaped bacterium of the genus Lactobacillus. [1] It is most commonly used in the production of American Swiss cheese and Emmental cheese, but is also sometimes used in making other styles of cheese, such as Cheddar, Parmesan, Romano, provolone, and mozzarella.
When Emmental cheese is being produced, P. freudenreichii ferments lactate to form acetate, propionate, and carbon dioxide: (3 C 3 H 6 O 3 → 2 C 2 H 5 CO 2 + C 2 H 3 O 2 + CO 2). [2] The products of this fermentation contribute to the nutty and sweet flavors of the cheese, and the carbon dioxide byproduct is responsible for forming the holes ...
Members of the genus Propionibacterium are widely used in the production of vitamin B 12, tetrapyrrole compounds, and propionic acid, as well as in the probiotics and cheese industries. [7] The strain Propionibacterium freudenreichii subsp. shermanii is used in cheesemaking to create CO 2 bubbles that become "eyes"—round holes in the cheese. [8]
Cheese. Certain varieties like Swiss, provolone ... Antibiotics can kill bacteria in the intestines that produce vitamin K, a nutrient that supports normal blood clotting and makes proteins for ...
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Streptococci are also a necessary ingredient in producing Emmentaler ("Swiss") cheese. [9] Species of streptococci are classified based on their hemolytic properties. [10] Alpha-hemolytic species cause oxidization of iron in hemoglobin molecules within red blood cells, giving it a greenish color on blood agar.
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