Download Unit 5 Proteins PPT

PROTEIN
ONE PROTEIN=
20 AMINO ACIDS
AKA BUILDING
BLOCKS OF
PROTEIN
FUNCTIONS OF PROTEIN
-BUILD & REPAIR BODY TISSUE
-MAINTAIN CELL GROWTH IN
THE FORMATION OF NEW BODY
TISSUE. THIS IS ESPECIALLY
IMPORTANT IF THE BODY IS
GROWING RAPIDLY, INJURED,
OR UNDER STRESS.
-AID IN THE
FORMATION
OF ENZYMES,
SOME
HORMONES &
ANTIBODIES.
-PROVIDE AS ENERGY IF
SUFFICIENT
CARBOHYDRATES & FATS
ARE NOT SUPPLIED BY
THE DIET.
11 AMINO ACIDS
NON-ESSENTIAL
-Body makes
them
9 AMINO ACIDS
• ESSENTIAL
-Body doesn’t
make them
-Needs to come
from diet
-Comes from
animal sources
9 ESSENTIAL AMINO ACIDS
1. LYSINE
2. METHIONINE
3. CYSTINE
4. TRYPHOTOPHAN
5. VALINE
6. ISOLEUCINE
7. HISTIDINE
8. PHENYLALANIE
9. THREONINE
Complete vs.
Incomplete
Milk
Cheese
Meat
Fish
Eggs
TOFU
Nuts
Beans
Rice
Legumes
Cereals/Grains
-contains all 9
essential amino acids
-missing 1 or more
essential amino acids
WHO HAS TO
WORRY ABOUT NOT
GETTING THE
COMPLETE
PROTEINS?
VEGETARIANS
LACTO-OVO
VEGETARIAN
When most people think of
vegetarians, they think of
lacto-ovo-vegetarians.
People who do not eat
beef, pork, poultry, fish,
shellfish or animal flesh of
any kind, but do eat eggs
and dairy products are
lacto-ovo vegetarians
(“lacto” comes from the
Latin for milk, and “ovo”
for egg).
OVO-VEGETARIAN
Ovo-vegetarian refers
to people who do not
eat meat or dairy
products but do eat
eggs.
LACTO VEGETARIAN
Lacto-vegetarian is
used to describe a
vegetarian who
does not eat eggs,
but does eat dairy
products.
VEGAN
Vegans do not eat meat of any
kind and also do not eat eggs,
dairy products, or processed
foods containing these or other
animal-derived ingredients such
as gelatin. Many vegans also
refrain from eating foods that
are made using animal products
that may not contain animal
products in the finished process,
such as sugar and some wines.
There is some debate as to
whether certain foods, such as
honey, fit into a vegan diet.
ESSENTIAL AMINO
ACIDS IN FOOD
BAKED
BEANS
Baked Beans without
pork are a moderate
biological value
protein food and are
short of the amino
acid methionine,
cystine, trypotophan
and valine.
(1/2 cup cooked, no
pork, made from
white beans)
WHOLE
WHEAT
FLOUR
Wheat is a
moderate
biological value
protein food and
is short in the
amino acid lysine.
(1/4 cup)
RICE
Rice is a
moderate
biological value
protein food and
is short in the
amino acid lysine.
(1 cup cooked)
PEANUT
BUTTER
Peanuts are a lower
biological value
protein food and
are short of amino
acids lysine,
methionine, cystine
and tryptophan.
(1/4 cup)