Biotechnology to make food Flashcards
How is yogurt made
Fermentation of milk and conversion of lactose to lactic acid by lactobacillus bacteria
How does lactobacillus make yogurt
Convert lactose to lactic acid- causing milk proteins to denature and causing it to set and thicken
What bacteria is used to make cheese
Lactobacillus
What is the process of making cheese
Milk mixed with lactobacillus to produce lactic acid from lactose
Once milk is acidified, add rennet which contains chymosin.
Renning coagulates milk and separates into curds of cheese
What enzyme is added to the process of making cheese and what is it found in
Chymosin
Rennet
What is the name of the yeast used in making bread
S. cerevisiae
How is bread fermented
Dough left in a warm place so yeast can respire anaerobically
write the process of anaerobic respiration in yeast
pyruvate —- ethanal—–ethanol
uses enzymes pyruvate decarboxylase (ethanal).
enzyme ethanol dehydrogenase (ethanol).
what is alcohol a product of
anaerobic respiration of yeast (S. cerevisae)
what grains make beer
barley grains
what is one difference between the cell structure of a bacteria and a fungal cell
fungal- hyphae
bacterial- circular dna not in nucleus
what is the difference between the cell wall of a fungal cell and bacterial cell
fungal- chitin
bacterial- peptidoglycan
