07-Fats+_+Oils_F_13

fats are semi solids at room temperature oils are

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Unformatted text preview: re absorbed What’s the difference? ! ! Fats are (semi)-solids at room temperature Oils are liquid at room temperature Normal hydrolysis of triglycerides breaking off the fatty acids (blue) by lipase (orange) FST10 ©GMS/GFR 2013 Percentages of Fat — The Games People Play ! ! For example; “95% Fat Free” means 5% fat Nutritionists recommend <30% (+/-) by Calories ! ! Lift pencils for a moment . . . Food industry labels fat% by weight and they like to tell you how fat isn’t there ! FST10 ©GMS/GFR 2013 And they think ‘calories’ for diets These 2 numbers can be very different FST10 ©GMS/GFR 2013 Fat Content - Example 1 Fat Content - Example 1 Calculate % calories from fat We’ll use this to examine fat content ! 100 grams of food (no water — dry food) ! ! ! ! 30 grams of fat 70 grams of CHO’s and protein Could be labeled 70% ‘fat free’ (30% fat) Since the labeling refers to % by weight ! 100 grams of food (no water, just dry food) ! 30 g of from fat ! 70 g of CHOs and protein ! So, remember it’s 30% fat by weight ! Calculate calories: ! 30 x 9! ! ! 70 x 4! ! ! Total kcal! ! = 270 kcal (fat) = 280 kcal (CHO’s & protein) = 550 kcal % fat by calories = 270/550 x 100 = 49% (almost half) FST10 ©GMS/GFR 2013 FST10 ©GMS/GFR 2013 Fat Content - Example 2 ! What would happen if we added 5 times the amount of water? ! ! 70 grams of CHO’s and protein ! ! 30 grams of fat ! Fat Content - Example 2 500 grams of water for a total of 600 g of food Calculate the calories: Fat!! ! CHO/Protein! Water! ! Total! ! ! The % fat by weight is now 30/600 x 100 = 5% ! ! Could be labeled ‘95% fat free’ (5% fat) ! 30 x 9! ! 70 x 4! ! 500 x 0!! ! ! The % fat by weight now = 30/600*100 = 5% % fat by calories = 270/550 x 100 = 49% Bottom line: ! It’s now “95% fat free” ! But the % calories from fat is the same (almost half) FST10 ©GMS/GFR 2013 More bottom line ... ! ! By diluting a food with water, the % fat ! (by weight) will go down However, just diluting with water does not change the % of calories from fat = 270 kcal = 280 kcal = 000 kcal = 550 kcal FST10 ©GMS/GFR 2013 An example of ‘low fat’ franks ! ! 3% fat (by weight) 20% of calories from fat (all other things being equal) FST10 ©GMS/GFR 2013 FST10 ©GMS/GFR 2013 Another example ... With high water content ... FST10 ©GMS/GFR 2013 For Low-Fat types For Low-Fat types ! Simplesse™ (made by NutriSweet & CP-Kelco) ! However, “up to 1% fat” is OK made from dairy & egg proteins ! can be formulated as a powder ! may have problems with heating ! 1 calorie vs. 9 calories FST10 ©GMS/GFR 2013 For Low-Fat types ! The Olean and Healthy Snacking segment airing on Chemically bonds fatty acids onto sugar molecules ! Get the facts about Olean brand olestra, the no-fat cooking oil with the full-fat flavor! Here you'll find the specific information you're looking for about olestra and your favorite snacks. Just click on the topic you would like to know about or type a word or phrase in the search box. Olestra (Olean™ — Proctor & G...
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