-By the end of this lecture, students will have a general VIEW ABOUT FATS Intended Learning Outcomes.

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Presentation transcript:

-By the end of this lecture, students will have a general VIEW ABOUT FATS Intended Learning Outcomes

Source of energy, 1g = 9kcal, Source of Essential Fatty Acids. Carrier for fat sol vit A, D,E, K Palatability Satiety value Invisible & visible fat Cholesterol – only foods of animal origin

Three major types of fat SATURATED FATS BAD Carbon chains with hydrogen bonds Meat, Butter, coconut, milk chocolate, creams, Ghee UNSATURATED FATS GOOD carbon chains with one or more double bonds Monounsaturated : olive oil, nut oils Polyunsaturated : corn oil, vegetable oils, soy etc. TRANS FATS BAD Manufactured fats. Liquid  Solid (hydrogenation)

Energy Fuel 65% Carbohydrates (cereals, roots & tubers, sugar, sweets, bread, ) 20% Fats (dairy products, oil) % Protein (pulses, eggs, milk, meat, poultry, fish) Energy yield per gram is as follows: Carbohydrate - 4 kcal, Fats - 9 kcal and Protein - 4 kcal. Nutrition & wellness - Nutritional perspective. Dr. mervat salah

What are the energy requirements Personal energy requirement = basic energy requirements + extra energy requirements Basic energy requirements (BER) For every Kg of body weight 1.3 kcal is required every hour. An adult weighing 50Kg would require 1.3 × 24hrs × 50Kg = 1560 kcal/day Nutrition & wellness - Nutritional perspective. Dr. mervat salah.

Factors affecting Basal energy expenditure Body size - larger & taller people, have metabolic rates. Body composition – lean body mass, single determinant of BEE Age - younger age Gender – differences in body size & composition Hormonal status – endocrine disorders. In women metabolic rates change with menstrual cycle, pregnancy & menopause Nutrition & wellness - Nutritional perspective. Dr mervat salah

How to derive nutrients ?? FAT S MILK &MILK PRODUCTS Prot,fat Ca, Vit FRUITS & VEG – Fibre, vit, min PULSES & LEGUMES Energy, Cho, Prot, Inv Fat, Vit, MIn Fibre CEREALS & PRODUCTS Energy, Cho, Prot, Inv Fat, Vit, Min, Fibre Nutrition & wellness - Nutritional perspective. Dr. Mervat salah

Balanced Diet - Contains different types of foods in such quantities & proportions so that the need for various nutrients is adequately met - provision for extra nutrients – to withstand short duration of low intake - to calculate – know Recommended Dietary Allowances [ RDA] – ICMR - Tables of Food Composition Nutrition & wellness - Nutritional perspective. Dr. Mervat salah

Recommended text book Manual dietetic book