CHEM181 - Topic 1 Introduction Notes - CHEM181 Topic 1 Introduction Notes Lesson 1 A Sampling of Food Topics Video 2 Pomegranate juice has been prized

CHEM181 - Topic 1 Introduction Notes - CHEM181 Topic 1...

  • McGill University
  • CHEM 181
  • Notes
  • whatisdamata
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CHEM181: Topic 1 – Introduction Notes Lesson 1: A Sampling of Food Topics Video 2: Pomegranate juice has been prized since the biblical era The bible does not say the apple is the fruit that Eve used to tempt Adam (it is known that pomegranate grew in that part of the world way before apples) Pomegranate has anticancer properties because they contain compounds called aromatase inhibitors o If you take cultured breast cancer cells in a petri dish and douse them in pomegranate juice, they multiply less quickly Makers of POM took this fact out of proportion in their ads Dried apricots very popular in the Himalayas and they contain beta- carotene (an antioxidant and Vitamin A precursor) o It is believed that this causes longevity no proof without birth certificates Apricot pits have been claimed as the raw material from which the chemical called Laetrile is extracted o Laetrile turned out to be a bogus cancer remedy o Apricot pits contain a compound that can release cyanide (which people argue can kill cancer cells) We have to analyze the info and look at peer-reviewed scientific literature Video 3: Hippocrates “Let thy food be thy medicine” Flax is good for the intestines because flax seeds contain omega-3 fats o The omega-3 fats in flax seed are not as good as the ones found in fish o Beneficial effects including reduction in risk of cardiac arrhythmia o Stories of feeding it to pregnant women and having them give birth to more intelligent children Flax seeds contain lignans , which have estrogen-like properties o The estrogen-like properties can be good or bad depending on the dosage o Phytoestrogrogens : plant-based estorgens Flax seeds also contain fiber , both soluble and insoluble o Fiber indigestible and passes through to the colon where bacteria can manipulate it, break it down, some is absorbed and much is excreted o Results in the laxative effect o Soluble fiber can reduce cholesterol
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o Insoluble fiber speeds substances through the gut and regulating us Lignans o Can have an effect on breast cancer (only seen in overweight pre- menopausal women) o Reduces risk of breast cancer because there are breast cancers that are stimulate by the body’s over-production of estrogen and the lignans seem to block those estrogen receptors Eggs o Yolk is high in cholesterol (and this is linked to heart disease) o Feed flax seeds to chickens to get more omega-3 fats in eggs Fat used to make donuts is trans fat o Trans fat raises blood levels of cholesterol Oat bran o It is the outer covering of the oat grain o Can lower cholesterol levels active ingredient is a soluble fiber called beta glucan o Need 3 grams of beta glucan to have an impact on your cholesterol Video 4: Fit for Life Harvey and Marilyn Diamond and gave nutritional advice o Processed foods are not toxic like they say o We can add appropriate nutrients we need in processed foods but obviously has its problems o
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  • Spring '11
  • Multiple
  • Nutrition, Omega-3 fatty acid, omega-3 fats

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