NHM 101 Lecture Notes - Lecture 12: Phytoestrogens, Beta-Carotene, Lycopene
2 May 2018
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Antioxidants, Phytochemicals, and Functional Foods
Highlights 11 & 13
Free Radical
● Created ogen reating with od’s ompounds
● Other causes: UV rays, air pollution, tobacco
● Damages fatty acids, DNA/RNA, and proteins
Antioxidants
● Inhibits oxidation or removes potentially damaging oxidizing agents
Defending Against Free Radicals
System of minerals against oxidants
○ Selenium
○ Manganese
○ Zinc
○ Copper
Antioxidant vitamins
● Vitamin E
○ Defends body lipids
● Beta-carotene
○ Defends lipid membranes
● Vitamin C
○ Protects other tissues
Choose fruits & veggies rich in minerals,
beta-carotene, and vitamin C.
Choose fats rich in Vitamin E.
Phytochemicals & Functional Foods
Found in plant-derived foods; have biological activity in the body.
● Physiological Effects:
○ Suppression of diseases
○ Adverse effects if consumed in excess
● Functional Foods:
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