Week 12: Soybeans

Question 1

Where are soybeans native to?

Answer 1

Asia

Question 2

Unfermented soy foods

Answer 2

Question 3

Fermented soy foods

Answer 3

• miso
• natto
• tempeh
• soy sauce

Question 4

What is used for soy fermentation?

Answer 4

bacteria, yeast or mold

Question 5

Fortified soy foods

Answer 5

Question 6

Soybean protein

Answer 6

• Can replace animal based foods - less fat and cholesterol - can replace without adjusting major ways of eating
• Similar to meat egg and milk protein

Question 7

Protein content of different beverages

Answer 7

Question 8

Soybean iron

Answer 8

Question 9

Differences between heme iron and non-heme iron

Answer 9

The way our bodies absorb these two types of iron is different heme iron is more bioavailable so more readily digested and absorbed and non-heme is less readily absorbed so less bioavailable. Soy is high in protein but not as bioavailable

Question 10

Soybean lipid profile

Answer 10

Good source of fats, and saturated fats do not make up the majority

Question 11

Soy sauce

Answer 11

Fermented paste of boiled soy, roasted wheat or barley and brine and aspergillosis fungus. Good for you but high in sodium so needs to be used in moderation

Question 12

Soy foods in the western diet

Answer 12

Highly processed foods are the most consumed sadly

Question 13

fortified soy beverage

Answer 13

In Canada Soy must be called soy beverage not milk to not confuse consumers

Question 14

Why is soy beverage recommended over other fortified plant beverages?

Answer 14

When fortified similar to cows milk but also lower cholesterol and saturated fat content

Question 15

How is soy beverage made?

Answer 15

Puréing soaked dried soy beans and then filtering out liquid.

Question 16

What is tofu?

Answer 16

Soybean curd - soy milk curdled with coagulant

Question 17

Possible coagulants for tofu

Answer 17

Question 18

difference between soft and firm tofu

Answer 18

Question 19

Nutrition of tofu

Answer 19

Question 20

Soy isoflavins

Answer 20

Question 21

What are isoflavins?

Answer 21

Class of phytoestrogen plant derived compounds with estrogenic activities.

Question 22

The two major soy isoflavones

Answer 22

Question 23

How do soy isoflavones work?

Answer 23

• Can bind to estrogen receptors throughout the body such as breast tissue and prostate glands, bones, liver, heart brain - everywhere.
• Can mimick the effects of estrogen in some tissues and can block effects of estrogen in other tissues

Question 24

How might soy isoflavones act like estrogen and anti-estrogen

Answer 24

• estrogen: May protect bones from getting fragile
• anti-estrogen: Estrogen in body stimulates the growth of breast and breast cancer cells if she consumes soy and the isoflavone act as antagonists then may protect against breast cancer

Question 25

Soy consumption and health

Answer 25

Question 26

Soy amoung breast cancer survivors

Answer 26

Question 27

Verdict on soy

Answer 27

Question 28

Which types of soy are healthy?

Answer 28

Question 29

Highly processed soybean products

Answer 29

Question 30

Health claims for soy protein

Answer 30

allow health claims that is decrease heart disease and lowers cholesterol