Types of Carbohydrates
Did you know there are
three main types of carbohydrate in
food? There are
·
Starches (also known as complex carbohydrates)
·
Sugars
·
Fiber
You'll also hear terms
like naturally occurring sugar, added sugar, low-calorie sweeteners, sugar alcohols,
reduced-calorie sweeteners,
processed grains, enriched grains, complex carbohydrate, sweets, refined grains
and whole grains.
No wonder knowing what
kind and how much carbohydrate to eat can be confusing!
On the nutrition
label, the term "total carbohydrate" includes all three types of
carbohydrates. This is the number you should pay attention to if you are carbohydrate
counting.
Starch
Foods high in starch include:
·
Starchy vegetables like peas, corn, lima beans and potatoes
·
Dried beans, lentils and peas such as pinto beans, kidney beans,
black eyed peas and split peas
·
Grains like oats, barley and rice. (The majority of grain
products in the US are made from wheat flour. These include pasta, bread and
crackers but the variety is expanding to include other grains as well.)
The grain group can be
broken down even further into whole grain or refined grain.
A grain contains three
parts:
·
bran
·
germ
·
endosperm
The bran is the outer
hard shell of the grain. It is the part of the grain that provides the most fiber and most of the B vitamins and
minerals.
The germ is the next
layer and is packed with nutrients including essential fatty acids and vitamin
E.
The endosperm is the
soft part in the center of the grain. It contains the starch. Whole grain means
that the entire grain kernel is in the food.
If you eat a whole
grain food, it contains the bran, germ, and endosperm so you get all of the
nutrients that whole grains have to offer. If you eat a refined grain food, it
contains only the endosperm or the starchy part so you miss out on a lot of
vitamins and minerals. Because whole grains contain the entire grain, they are
much more nutritious than refined grains.
Sugar
Sugar is another type
of carbohydrate. You may also hear sugar referred to as simple or fast-acting
carbohydrate.
There are two main
types of sugar:
·
naturally occurring sugars such as those in milk or fruit
·
added sugars such as those added during processing such as fruit
canned in heavy syrup or sugar added to make a cookie
On the nutrition facts
label, the number of sugar grams includes both added and natural sugars.
There are many
different names for sugar. Examples of common names are table sugar, brown
sugar, molasses, honey, beet sugar, cane sugar, confectioner's sugar, powdered
sugar, raw sugar, turbinado, maple syrup, high-fructose corn syrup, agave nectar and sugar
cane syrup.
You may also see table
sugar listed by its chemical name, sucrose. Fruit sugar is also known as fructose and
the sugar in milk is called lactose. You can recognize other sugars on labels
because their chemical names also end in "-ose." For example glucose (also called dextrose), fructose (also
called levulose), lactose and maltose.
If you are looking for
information about artificial sweeteners, try
this section.
Fiber
Fiber comes from plant
foods so there is no fiber in animal products such as milk, eggs, meat,
poultry, and fish.
Fiber is the
indigestible part of plant foods, including fruits, vegetables, whole grains,
nuts and legumes. When you consume dietary fiber, most of it passes through the
intestines and is not digested.
For good health,
adults need to try to eat 25 to 30 grams of fiber each day. Most Americans do
not consume nearly enough fiber in their diet, so while it is wise to aim for
this goal, any increase in fiber in your diet can be beneficial. Most of us
only get about half of what is recommended.
Fiber contributes to
digestive health, helps to keep you regular, and helps to make you feel full
and satisfied after eating.
Additional health
benefits, of a diet high in fiber — such as a reduction in cholesterol levels — have been suggested by some
so may be an additional benefit.
Good sources of
dietary fiber include:
·
Beans and legumes. Think black beans, kidney beans, pintos,
chick peas (garbanzos), white beans, and lentils.
·
Fruits and vegetables, especially those with edible skin (for
example, apples, corn and beans) and those with edible seeds (for example,
berries).
·
Whole grains such as:
o Whole wheat pasta
o Whole grain cereals
(Look for those with three grams of dietary fiber or more per serving,
including those made from whole wheat, wheat bran, and oats.)
o Whole grain breads (To
be a good source of fiber, one slice of bread should have at least three grams
of fiber. Another good indication: look for breads where the first ingredient
is a whole grain. For example, whole whe+at or oats.) Many grain products now
have "double fiber" with extra fiber added.
·
Nuts — try different kinds. Peanuts, walnuts and almonds are a
good source of fiber and healthy fat, but watch portion sizes, because they also
contain a lot of calories in a small amount.
In general, an
excellent source of fiber contains five grams or more per serving, while a good
source of fiber contains 2.5 - 4.9 grams per serving.
It is best to get your
fiber from food rather than taking a supplement. In addition to the fiber,
these foods have a wealth of nutrition, containing many important vitamins and
minerals. In fact, they may contain nutrients that haven't even been discovered
yet!
It is also important
that you increase your fiber intake gradually, to prevent stomach irritation,
and that you increase your intake of water and other liquids, to prevent
constipation.
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