Question

You are in a research and development work and given the following sample as benchmark, what...

  1. You are in a research and development work and given the following sample as benchmark, what physical properties you will measure and why?
  1. Cooking oil
  2. Wine
  3. Shampoo
Engineering   Chemical-Engineering   
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Homework Answers

Answer #1

a. for cooking oil

free fatty acid: High FFA lowers odidative stability of oil

peroxide value: indicates extent of primary Oxidation of oil

acid value: indicates number of corboxylic group or acidity

p-anisidine value (AV): extent of secondary Oxidation

b) for Wine:

pH : decides taste, color, Oxidation and chemical stability

SO2 number : inhibit bacteria and wild yeast growth

alcohol content: to meet specification of wine

Residual sugar : to measure sweetness of wine

mallic acid: enhance effectiveness of SO2and decide taste

c) for Shampoo

pH : to control acidity

Viscosity : flow characteristics

foam ability : to know leathering performance

wetting time: to confirm wetting efficiency

Solid content: affect storage stability

dirt dispersion : indicates effective cleansing action

surface tension: effect wettability

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