Gluten, no gluten Flashcards

1
Q

What is gluten? Which cereal grain has the highest gluten levels?

A

The protein component of wheat, barley, and rye. Wheat has the most protein of the cereal grains.

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2
Q

What percentage of the world’s food calorie consumption comes from wheat?

A

~20%

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3
Q

What 2 storage proteins are present in wheat? How can they be bonded to make gluten?

A
  1. Glutenin
  2. Gliadin
    Kneading produces bonding.
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4
Q

How does the presence of gluten during baking cause bread to rise?

A

The gluten structure traps CO2 released by yeast fermentation.

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5
Q

How long have humans been consuming wheat?

A

Since domestication ~10000 years ago.

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6
Q

What is celiac disease? How common was it in 1950? What about today?

A

An immune reaction leading to damage of the intestinal villi and reduced nutrient absorption. Increased in prevalence from 0.2% in 1950 to 1% of population today.

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7
Q

What were the conclusions drawn from the gluten experiment done by Peter Gibson in 2011?

A

Evidence to support non-celiac gluten sensitivity.

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8
Q

How many Canadians were reported to look for gluten-free products in 2017?

A

10 million.

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9
Q

How much did the global sales of gluten-free food increase in 2016? To what value per year?

A

Increased by 12.6% to 3.5 billion per year.

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10
Q

If not gluten, what is actually causing non-celiac gluten sensitivity?

A

Fermentable oligo-di-monosaccharides and polyols (FODMAPs).

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11
Q

What are some common examples of FODMAPs?

A

Fructose, lactose, fructans, galactans, polyols, etc.

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12
Q

Alongside sweeteners, what fruits are noted to contain polyols?

A

Stone fruits (avocado, apricot, cherry, etc).

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13
Q

What is the purpose of FODMAPs in the plant?

A

Used to hold water (makes fruits juicy).

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14
Q

How do FODMAPs cause non-celiac gluten sensitivity?

A

By pulling water into the intestinal tract. When FODMAPs are poorly digested, they can be fermented by bacteria causing gas/discomfort.

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15
Q

Why is extra gluten sometimes added to baked goods?

A

To strengthen dough and help it to rise. Also increases elasticity and shelf-life.

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16
Q

Besides baked goods, what other food products often have gluten added to them?

A

Often added as a binding agent in soups, sauces, and dressings.

17
Q

Are gluten-free products always more healthy?

A

No. Often gluten is replaced with highly refined flour alternatives which have been modified with more sugar, salts, and fats to improve their flavour.

18
Q

What is the purported health benefit of “juice cleansing”?

A

To “detoxify the body”. Also advertised for weight loss and illness prevention.

19
Q

Why is “juice cleansing” a heaping pile of shit?

A

Generally better to eat fruit than drink it, not true that juicing gives more nutritional benefit. No evidence that our bodies need detoxification.