Basic principles of micronutrients - Basic principles of vitamins and minerals - Mineral bio-availability and food content

5 important questions on Basic principles of micronutrients - Basic principles of vitamins and minerals - Mineral bio-availability and food content

What is mostly the cause for the lower bio-availability of minerals?

Minerals are bound to compounds in the foods that limit their aborption

What are 2 examples of compounds that are part of the negatively charged compounds that tightly bind cations (such as calcium, iron, zinc) in foods, affecting/lowering the bio-availability?

Phytates, dietary fiber

What 4 diet-related factors affect bio-availability of a food (think: chemistry, nutritional ratios, specific molecules that lower bio-availability, 4)?

  1. The chemical form of the nutrient in the food
  2. The nature of the food matrix
  3. The presence of negatively charged compounds that tightly bind cations
  4. Processing and preparation practices of a food
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What is the food matrix for a specific food?

The combination of the nutritive and non-nutritive components in a food and their molecular relationship (EX: their chemical bonds)

What are 2 notable exceptions to the fact that dietary minerals are present in nearly all foods?

Vegetable oils, table sugar

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