Denaturation

Enzymes are very ____ to their environments

sensitive

What is denaturation?

the permanent structural change of the protein molecules in food. This can be done by the application of heat, mechanical action or the addition of acid.

The scientific process that cooks meat with heat in the oven is the same one that cooks it with...

ACID

Lemon Juice, Lime Juice and Vintage are all examples of?

Acids that break down raw meat

______ ______ determine the structure and function of proteins. Among other things ______ _____ help build cells and repair tissue, form antibodies, and carry oxygen throughout the body.

Amino Acids

Proteins are made up of varying ...

Amino acids

What does extreme pH levels do to the proteins?

Causes the charges on amino acid R groups to change, with breaks ionic bonds within the protein

What can extreme changes in conditions do?

Change the shape of the enzyme's active site

What happens when meat is cooked?

Individual protein molecules in raw meat are wound-up in coils, which are formed and held together by bonds. When meat is heated, the bonds break and the protein molecule unwinds.

How does heat denature proteins?

It causes vibrations within the protein that break intermolecular bonds and interactions.

Proteins in an egg start out as curled-up little balls, but as we beat the whites, the force we exert causes the proteins to stretch out and bond together. This is an example of..

Mechanical Denaturation

Fish becomes flakey and pulls apart easily when cooked this is due to ..

Muscle fibers are much shorter than they are in beef. During denaturation the fibres soften and loose their structure

The main natural component in meat, poultry, fish, eggs, dairy foods and legumes is?

Proteins