8/12/2019 Lecture Slides Week1 1 4 Lipids

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Focus on: Lipids

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Nutrients: Energy Yielding or Not?!"#$%&'# )%&*+, -'&$./0

Yes NoMacronutrientsCarbohydrates 4 kcal/gramFats 9 kcal/gramProtein 4 kcal/gramMicronutrientsVitamins Minerals MiscellaneousWater Alcohol 7 kcal/gram

8/12/2019 Lecture Slides Week1 1 4 Lipids

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Overview

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Lipid Classification

Triglycerides

95% of dietary fat comes from triglycerides

The major form of lipid in food & in the body

Phospholipids

Allow water & fats to mix

Has hydrophilic phosphate head & hydrophobic fat-soluble tail

Sterols

Form cholesterol, vitamin D, sex hormones, cortisol (stress hormone)

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Triglycerides

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Saturated Fatty Acids

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Unsaturated Fatty Acids

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Degree of Saturation: Oils

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Degree of Saturation: FoodsMonounsaturated Polyunsaturated Saturated

Avocado Omega-6 CheeseOils: canola, olive, peanut,

sesame

Margarine, mayonnaise Butter, Shortening

Walnuts Bacon & Meat fat

Olives Pumpkin & sunflower seeds Chocolate

Peanut butter Oils: corn, cottonseed,safflower, soybean

Cream, !& !, sour cream

Sesame seeds Lard

Nuts: almonds, cashews,filberts, hazelnuts,

macadamia, peanuts,pecans, pistachios

Salad Dressing Whole-milk products

Omega-3Oil: coconut, palm, palm

kernelFatty fish, flax, nuts

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Trans Fatty Acids

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Phospholipids

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Sterols

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Concept Check: Sterols

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