BIOLOGY 1A03 Lecture Notes - Lecture 6: Psyllium, Resistant Starch, Health Canada

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Alastair Tracey

Document Summary

Insoluble: cellulose, lignins, psyllium, resistant starch, many hemicelluloses. Speed through fecal passage better because: reduces risk of colon cancer; reduces constipation. Fibre top to bottom: faster; transit time is faster; less potential for absorption; slower in the top, faster in the bottom. Low fibre top to bottom: slower; high uptake = high glycemic response. May limit a(cid:271)ility to (cid:373)eet (cid:374)utritio(cid:374)al (cid:374)eeds; (cid:373)al(cid:374)ourished, elderly, you(cid:374)g (cid:272)hildre(cid:374) : feeli(cid:374)g of full(cid:374)ess, (cid:271)i(cid:374)di(cid:374)g to (cid:373)i(cid:374)erals, a(cid:374)d preve(cid:374)ti(cid:374)g their a(cid:271)sorptio(cid:374) , does not usually happen to people who consume <40 g of fibre per day. May lead to abdominal discomfort, gas, diarrhea, if introduced in large amounts. Health canada daily value = 25 g / 2000 kcal. Dri = 14 g / 1000 kcal / day.