Unit 7 - Adulthood Nutrition (Part 3)

Question 1

What is an antinutrient?

Answer 1

Substances that interfere with nutrient absorption

Question 2

What minerals does Phytic Acid impair the absorption of? What foods can phytic acid be found in?

Answer 2

1. Calcium, magnesium, iron, zinc
2. legumes/soy

Question 3

What minerals does oxalic acid impair the absorption of? What foods can oxalic acid be found in?

Answer 3

1. Calcium
2. Spinach, rhubarb, and members of the cabbage family

Question 4

What food contains amylase inhibitors, and what problem can they pose in terms of digestion?

Answer 4

1. Kidney beans
2. Impair starch digestion

Question 5

What foods contain a lot of protease inhibitors?

Answer 5

soy beans

Question 6

What minerals do lectins decrease absorption of?

Answer 6

Calcium, iron, phosphorus, zinc

Question 7

Give 2 reasons for why a high fibre diet might result in decreased nutrient absorption.

Answer 7

• Increased rate of transit lowers time for nutrient absorption
• High fibre foods are often high in phytic acid

Question 8

Which compound reduces iodine absorption? What foods are rich in this compound?

Answer 8

1. glucosinolates
2. cabbage family foods

Question 9

What minerals can flavonoids reduce the absorption of?

Answer 9

Iron and zinc