Vocabulary Terms Midterm 1 Flashcards
Spontaneous Fermentation
Action of wild microorganisms already present on food or in the area
Inoculated fermentation
Introducing a single pure culture or several (mixed) into favorable environment
Back Slopping
Adding product of previosuly succesful reaction to start a new one
Acetic Fermentation
Produce acetic acid by converting alcohol with the help of Oxygen
Lactic Fermentation
Lactic Acid bacteria
feed on surgars and produce lactic acid
Alcoholic Fermentation
Uses pure yeast to convert sugar into alcohol
Ineffective means of preservation as it has a toxic effect on many organisms
Amylolytic Fermentation
Uses Molds
Proteolytic Fermentation
Uses molds on high protein foods. Requires a starter culture
Acetic Acid
Ch3CO2H
Ethanolic acid
Another name for Acetic acid
Vinegar
Most common name for acetic acid in food industry
Glacial acetic acid
Glacial acetic acid is a name for water free acetic acid (lab grade)
Acetobacter sp.
Produce most vinegar using oxidative fermentation from ethanol to acetic acid
Very tolerant to acetic acid
Acetogenic
Bacteria that produce acetic acid anaerobically
Acetobacter
Acetic Acid Bacteria - oxidize lactate and acetate into carbon dioxide and water
Gluconobacter
Acetic acid bacteria that perfers sugar environments
Gluconacetobacter
Acetic Acid Bacteria used in Kombucha brewing
Komagataeibacter
Acetic acid bacteria that are able to produce cellulose
Acetyladehyde
Aldehyde formed from acetic acid by reduction of the carboxyl group
Overoxidation
When strains start to ocidize acetic acid over
Surface Static Processes
Thin film of growth media which beocmes thicker over time. Bacteria are imbedded in this layer, get both O2 and nutrients
Submerged Processes
Used with the Komagateibacter strains uses rapid mixing with forced aeration in bioreactor
Restoration
Chaperones that remake denatured proteins
Degradation
Chaperones that degrade denatured proteins