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Fermentation Definition and Types. C Fermentation Fermentation In practice, fermentation is an art. Encourage growth of the right microorganisms.

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Presentation on theme: "Fermentation Definition and Types. C Fermentation Fermentation In practice, fermentation is an art. Encourage growth of the right microorganisms."— Presentation transcript:

1 Fermentation Definition and Types

2 C-5.02 -- Fermentation Fermentation In practice, fermentation is an art. Encourage growth of the right microorganisms and discourage growth of microorganisms that cause spoilage. Accomplished by adding salt or a starter culture to the food, or in some cases slightly acidifying it.

3 C-5.02 -- Fermentation What is it? Enzymatically controlled change in food Caused by microbes Changes caused by Break down of components Glucose  Pyruvate  acid or alcohol + CO 2 Release of by-products

4 C-5.02 -- Fermentation By-Products -- Changes and Advantages Changes: Color Texture Flavor Aroma pH Advantages: New products Increases shelf-life Increases variety of food products available

5 C-5.02 -- Fermentation Starter Culture A starter culture can be: Yeast, Bacteria, or Mold Influence quality characteristics; such as texture, moisture content, no pathogens and their toxins, and taste.

6 C-5.02 -- Fermentation Uses in the food industry End productRaw ingredientStarter culture BeerBarley and hopsYeast BreadSugar in doughYeast YogurtMilkBacteria CheeseMilkBacteria PicklesCucumberBacteria VinegarCider, wineBacteria

7 C-5.02 -- Fermentation Yeast Fermentation Saccharomyces cerevisiae Uses sugar as fuel A fungus Food products Yeast breads Alcoholic beverages

8 C-5.02 -- Fermentation Bacterial Fermentation Lactic Acid Pickled vegetables (cabbage, cucumbers, olives) Semi dry and dry sausages Cultured dairy products Acetic Acid Two step process (yeast creates wine) Acetic acid bacteria creates vinegar

9 C-5.02 -- Fermentation Mold Fermentation Antibiotics Flavor compounds Enzymes Two-step fermentation with mold includes chocolate and cheeses Products: Tempeh Soy sauce Tempeh Soy sauce


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