Chapter 16 Flashcards
Edible fungi
- Mushrooms: fungal fruiting bodies
- Source of proteins and minerals
- Underground truffles
Edible algae
Seaweeds like red algae
Edible bacteria
nucleic acid content often too high for use as major food items
purposes of food fermentation include
- To preserve food: by limiting unwanted microbial growth
- To improve digestibility: by breaking down complex carbohydrates, fibers
- To add nutrients (such as vitamins) and flavor molecules (such as esters and sulfur compounds)
Traditional fermented foods usually depend on
- indigenous flora (microbes found naturally on the food)
- starter cultures (from a previous fermentation)
Major classes of fermentation reactions include
- Homolactic acid fermentation
- Propionic acid fermentation
- Ethanolic fermentation
preservatives
-food fermentations produce acids or bases
-prevent other microbes from -growing and spoiling the food
most microbes that spoil food prefer near-neutral pH
Acid Fermentation of Vegetables
-Soybeans:
Mold: Aspergillus—miso, soy sauce
-Cabbage, cucumbers, olives
Pickling: fermentation in brine (high salt)
Bacterium Leuconostoc: sauerkraut, pickles, kimchi
Chocolate
from Cocoa Bean Fermentation