How It Happens + Reactions
What color does Enzymatic Browning make things turn?
Brown
How many factors are there?
4
how many prevention methods were listed in the presentation?
4
Name 3 fruits enzymatic browning affects
apples, bananas, potatoes, avocados, etc...
Does cold temperature slow Enzymatic Browning?
True or False
True
Will using a ziploc with oxygen inside fully stop the browning process with a fruit including PPO and substrates?
True or False
False, their is still oxygen inside so browning will still happen.
What 3 components are needed for enzymatic browning to happen?
PPO, Substrates, and Oxygen.
What are each of the factors?
PH, temprature, oxygen, surface area.
What are each of the prevention methods?
Acidification, temprature control, oxygen reduction, antioxidant substances.
What component of a fruit causes enyzmatic browning to happen when cut or damaged?
Cells
What PH range does Enzymatic Browning happen best at, and what can you use to stop enzymatic browning?
5.0-7.0PH, acidic things.
What type of vitamic can prevent oxidation of phenols?
Vitamic C.
What does PPO oxidize during enzymatic browning and what do they turn into?
Substrates(Phenolic compounds), quinones.
What thickness of slices brown faster, why?
Thinner slices because more of the internal part is exposed to oxygen.
what is heating briefly called and what does it do?
Blanching, blanching denatures enzymes.
what does Vitamin C convert when applied to something in the process of enzymatic browning? (250 pts)
What does Vitamin C convert that specific thing into? (250pts)
Vitamin C converts o-quinones back into colorless phenols.