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Separating Salt & Fat from Crisps

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Introduction

´╗┐Separating Salt & Fat from Chips Introduction: Aim: The aim of the experiment is to determine the salt and fat content in chips and then compare to the reference values on the back of the chips packaging. Research Question: How much salt and fat are in Lays paprika chips? Background info: The separation technique we used is called filtration. Filtration is a mechanical or physical operation used to separate solids from fluids with a filter. Oversize solids will be left over in the filter paper, but the filtration will still contain small particles. There are many methods of filtration, but their aim is all the same. The substance that passes through the filters has to be some type of fluid (a liquid or a gas). Filtration is used to separate particles and fluid. Also, it is used to separate materials of different chemical compositions. Filtration is also used as one of the unit operation for chemical engineering. There are two main types of filtration, surface filter and depth filter. Surface filter is a solid sieve, which filters the solid particles without using filter paper. ...read more.

Middle

The red coloring from the paprika dissolved in with the solvent and turned it orange-reddish, leaving the chips a natural color. Method/materials: 1. Chips (1-2) 2. Water (25mL) 3. White spirit (25mL) 4. 100 mL beaker 5. Pestle 6. Glass rod 7. 100 mL conical flask 8. Small funnel 9. Filter paper 3 10. Measuring cylinder (59 mL) 11. Weighing scale 12. Hot plate 13. Bunsen burner, tripod, gauze Procedure: 1. Weigh the chips 2. Put the chips in the 100 mL beaker 3. Add just enough solvent * to the chips to cover them 4. Stir the mixture or wait for the salt to dissolve 5. Weigh the mixture 6. Place a coffee cone filter in a funnel and place the funnel in the 100mL beaker 7. Pour the mixture into the funnel 8. Remove the funnel w/ the chips from the beaker 9. Weigh the filtrate 10. Evaporate the filtrate using the Bunsen Burner 11. Weigh the evaporated filtrate *Solvent are water and White Spirit Table #1 Variables: What type of variable The variable How do I control it? ...read more.

Conclusion

Mass of the conical flask +leftovers after evaporation (g) Chips (g) Total fat/salt (g) per 100 chips Chips + Water 54,7 grams 55 grams 2,3 grams 30 grams of salt Chips + White spirit 53,4 grams 53,9 grams 2,1 grams 50 grams of fat Calculations: 1. Subtract the mass of the conical flask from the conical flask + leftovers after evaporation 2. Times the answer by a hundred to get the total amount for 100 chips Ex. 54,7g - 55g = 0,3g 0,3g x 100 = 30g Ex. 53,4g - 53,9g = 0,4g 0,4g x 100 = 40g Conclusion: Referencing table #4, I conclude that in 100 chips there are 30 grams of salt and 50 grams of fat. According to the reference values on the back of the chips package, there is 0,5 grams of salt and 34 grams of fat. This means something went absolutely wrong Evaluation: The results from the experiment absolutely did not match the reference values on the chips packaging. This is why we decided to use the teacher?s data, which she picked randomly so it obviously can?t be compared to the real data. Our measurements were obviously not very accurate and neither was our filtering. ...read more.

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