Prebiotics, probiotics, symbiotics Flashcards
Meaning of prebiotic
Food for beneficial members of your resident microbial community.
Health benefits of prebiotics
- Improve mineral absorption
- Modulate inmune system
- Modulate satiety
Benefits of whole food fibers
- Laxation
- Improve blood lipids and glucose
Sources of prebiotics
Plants, vegetables, whole grains.
Example of insoluble fiber
Cellulose
Example of soluble fiber
Psyllium
Parts of a grain
Endosperm, bran, germ
Bioactive compounds of the oat
Betaglucans, vitamin E, phenolic acids.
What are beta-glucans?
Soluble fiber from the cell walls of oats.
Polysaccharide.
Oat beta-glucan reduces blood glucose and insulin responses?
True
Health benefits of beta-glucans
- Anticancer
- Anti-osteoporosis
- Antioxidative
- Anti-diabetes / anti-obesity
Types of fiber in oats
- Cellulose
- Lignin
- Resistan starch
- Beta glucans
- Arabinoxylans
Health benefits of avenanthramides (AVA)
Antioxidants, anticancer, anti-diabetes, vasodilation.
AVA’s attenuates excercise-induced inflammation in postmenopausal women.
True
AVA’s reduce glucose in Caco2 cells
True
Oats have polyphenols as bioactive compounds
True
What does polyphenols in oats do?
Modulate carbohydrate digestion and absorption.
Intake of oat phenols to suppress glucose transport in intestine.
1 ml/mL
Meaning of probiotic
Live microorganism which confer a health benefit on the host.
Health benefits of probiotics
- Support immune function
- Control inflammation
Characteristics to be considere as probiotic
- Be isolated from a human
- Have a proven benefit.
- Be safely consumed.
Sauerkraut (chucrut) is the result from a lactic acid bacteria. What’s the process?
Fermentation of cabbage in anaerobic conditions and adding salt. Several weeks at 15 - 20 C.
