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NUTR 302 (Test #1) > Fiber > Flashcards

Fiber Flashcards

1
Q

Dietary Fiber is Fiber found where?

A

In Food

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2
Q

Functional Fiber is Fiber found where?

A

Fiber added to Foods or taken as supplements

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3
Q

Fiber contains what kind of glycosidic linkages?

A

B1-4 bonds (non-digestible in humans)

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4
Q

Which dietary fibers are nonfermentable?

A

Ligin
Cellulose

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5
Q

Which dietary fibers are Insoluble?

A

Ligin
Cellulose
Hemicellulose
Pectins

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6
Q

Other than Nonfermentable & Insoluble, what are some additional dietary fibers?

A

B-Glucans
Gums
Fructans
Resistance Starches

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7
Q

Which soluble dietary fibers are fermentable?

A

Fructans
Pectins
B-Glucans
Gums
Psyllium

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8
Q

Which soluble dietary fibers are Viscous Gel-Forming?

A

Pectins
B-Glucans
Gums
Psyllium

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9
Q

What is water holding capacity?

A

How much water can be absorbed into the gel-like substance that is formed when mixing.

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10
Q

Water holding capacity is greatest in fibers with?

A

Intramolecular Bonding
(soluble > insoluble)

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11
Q

Viscosity in fiber is?

A

the ability to bind to organic/inorganic compounds.
(soluble>insoluble)

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12
Q

Ion-Exchange Capacity in fiber is?

A

ability of fiber to find to minerals

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13
Q

In fiber, the binding of organic compounds favors?

A

Soluble over insoluble

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14
Q

In Bacterial Fermentation, the only fiber type that cant be digested?

A

Lignin (antioxidant)

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15
Q

Delayed gastric emptying favors which type of fiber?

A

Soluble > Insoluble

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16
Q

How does fiber affect satiety?

A

Distention due to water holding. Delay’s gastric emptying.

17
Q

Intestinal transit time is altered how with insoluble & soluble fiber?

A

Insoluble: normal
Soluble: delayed

18
Q

How does viscosity alter nutrient absorption?

A

Interferes with mixing of intestinal contents with digestive enzymes

19
Q

How does fiber affect free radicals?

A

Reduces free radicals

20
Q

Fermentation of SCFA’s can result in what in the intestinal wall?

A

Hyperplasia

21
Q

In diverticulitis, fiber should be?

A

decreased

22
Q

What is the ADA for fiber?

A

20 g/d

23
Q

What is the DRI for women?

A

25g

24
Q

What is the DRI for men?

A

38g

25
Q

What is the upper limit of fiber intake?

A

35-50

NUTR 302 (Test #1) (7 decks)

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