Composition how fats are made Classification how fats are classified Sources how much we need and where we can get it Functions what they do in our bodies Omega3 why we need it and where we can get it ID: 1047772
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1. Fats (Lipids)
2. We will learn about :Composition - how fats are madeClassification - how fats are classifiedSources - how much we need and where we can get itFunctions - what they do in our bodies Omega-3 - why we need it and where we can get it
3. The Composition of Fats Fats are also called lipids. The fats that we eat are made from carbon, hydrogen and oxygen that come together in a special way. They have a ‘head’ and three long carbon ‘tails’. Like a three tailed tadpole.
4. The ‘tails’ can be straight or can have one or more bends. If all of the tails are straight the fat is a SATURATED fat. If any of the tails are bent, then it is an UNSTURATED fat.The Composition of Carbohydrates During digestion, enzymes help to break these three tails away from the head so that they can move into our blood. They are then repackaged and travel to all of our cells.
5. Saturated fats (straight tails) usually come from animal foods. These types of fat contain cholesterol.The Classification of Fats As we saw depending on the shape of the tails a fat can be saturated or unsaturated.Unsaturated fats (one or more bends in the tails) usually come from plants and oily fish. They do not contain cholesterol.
6. Sources of Fats SaturatedUnsaturated Omega-3meat- fatty meats, salami, sliced cooked meatvegetable oils like rapeseed, olive and sunfloweroily fish like mackerel, salmon, sardines ( fresh and tinned)milk , cream nuts – all are good sourceswalnutscheesepeanut butterseeds like flaxseeds , chiabutter soft spreads like Flora, Benecolvegetables like Brussel Sproutspastries, buns and cakesseeds - sunflower and sesameseaweedsbiscuits and some sweetsolives eggseggs
7. How Much Do We Need? The Reference IntakeWe need all types of fats but we need to be careful to get the amount and the types right.Our diet should have no more than 30% fat in it. For most adults, this means around 70g per day. Of this not more than 20g should be saturated and some should be Omega-3.BTW 1 gram of fat has 9 kcal, this is just over double the amount of calories in carbohydrates and proteins.50g20g
8. Why Do We Need Fats? FunctionsFat has many functions;It is a powerful store of heat and energy at 9 calories per gramFatty tissue called adipose tissue, keeps us warm and acts as a protective cushion around vital organsCertain vitamins (ADKE) are stored and transported around our bodies in fats Fat is used to make and regulate important hormonesThe walls of every cell in our body are made of lipids
9. Omega-3 is a type of unsaturated fat that is very important. It protects our hearts and is important for brain and eye development. We can’t make it ourselves so it’s an essential nutrient. It must come from food but it can quite difficult to get enough from our diets. The Classification of Fats Why Do We Need Omega-3 Fats? Functions
10. Getting the Balance Right!VFats are essential and we can’t live without them. There are different types and we need all of them. Some fats are easier to get than others. We need to be aware of the amounts of each fat that we eat.
11. ReferencesSlide 1 - https://st2.depositphotos.com/3687485/10818/v/600/depositphotos_108187198-stock-illustration-food-fats-good-high-in.jpgSlides 6 - https://www.creative-proteomics.com/application/unsaturated-fatty-acids-analysis-service.htmhttps://www.veganfirst.com/article/vegan-omega-3-rich-foodshttps://remedies.ie/oily-fish-omega-3/2429/https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/fats/saturated-fatshttps://www.foodbeverageinsider.com/fats-oils/study-finds-even-one-meal-high-saturated-fat-can-affect-concentrationSlide 7 - https://www.foodbeverageinsider.com/fats-oils/study-finds-even-one-meal-high-saturated-fat-can-affect-concentrationSlide 11 – https://images.immediate.co.uk/production/volatile/sites/30/2020/08/balanced-diet-for-women-main-image-700-350-610255c.jpg?quality=90&resize=768,574https://www.eatthis.com/wp-content/uploads/sites/4/media/images/ext/445699838/pizza-burgers-fries-fast-food.jpg?quality=82&strip=1&resize=640%2C360