Polyphenols Flashcards
What do polyphenols are?
Secondary metabolites of plants.
Defense against ultraviolet radiation.
What do polyphenols contribute in food?
- Astrigency
- Color
- Flavor
Sources of polyphenols
- Grapes
- Cherries
- Berries
What do polyphenols protect us of?
- Cancer
- Diabetes
- Infections
Polyphenol’s classification
- Phenolic acid
- Flavonoids
- Anthocyanins
- Lignans
- Stilbenes
Caffeic acids have antimicrobial effects
True
Anthocyanins colors response:
- Red
- Purple
- Blue
*Flowers, tortillas
What do anthocyanins do in the organism?
- Modulate intestinal MO.
What are the antiobesity effects of anthocyanin?
- Inhibition of lipid absorption
- Increase energy expenditure
- Regulation of gut microbiota.
- Inhibit postprandial glycaemia.
Other effects from anthocyanin?
- Antidiabetes
- Anticancer
- Anti neurodegeneration
What do isoflavons are?
Phytoestrogens
Sources of isoflavons:
- Soybeans
- Soy products
Isoflavons characteristics
- Present of glycosides
- Daidzein
- Equol
Soy isoflavon glycosides
- Genistin
- Daidzin
- Glycitin
Aglycones
- Genistein
- Daidzein
- Glycitein
Result from the metabolism of daidzein
Equol (greatest estrogenic activity).
Isoflavons can be used as prebiotic
Yes
Polyphenols and phenolic compounds are the same
True
Responsables of the astringency in wine:
Tannins
What was used to keep Malaria away?
Quinina
Responsables of our animal esterols:
Phytoesterols
What does the glycosylhydrolase do?
Break the bond between isoflavon and sugar.
Ways to preserve the bone:
- Classic –> calcium + collagen supplements
- Functional approach –> isoflavons, proteins, proline…
