HTHSCI 3BB3 Lecture Notes - Lecture 3: High Fructose Corn Syrup, Dietary Fiber, Carbohydrate
2 Jan 2019
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Document Summary
Carbohydrates: the rda is 130 g/day which is the glucose amount required by the brain. Refined carbohydrates: estimated that 13% of calories are added sugars present in desserts, drinks and snacks, canada"s food guide recommends more unrefined carbohydrates, recommendations to reduce processed carbohydrates in sugary drinks and baked goods. Whole grains: bran fibre and vitamins, germ vegetable oils and vitamin e, endosperm starch and some protein. Indigestible carbohydrates slow nutrient absorption: stomach contents are diluted with soluble fibre, slows absorption of nutrients, also aids in excretion of bile acids and cholesterol. Increases volume makes you feel more full, gives the bowel bulk. Availability of carbohydrates determines fatty acid metabolism: metabolism of other fuels is dependent on the availability of carbohydrate for the brains use. If carbohydrate is available, acetyl coa from fatty acid oxidation has oxaloacetate to combine with in the cac: fatty acid acetyl co a oxaloacetate glucose energy.
