Question

Lipid Extraction from Potato Chips Using Hexane Extractions:

1. Why is fat the only likely compound to be extracted from the chips (be specific)?

2. Give 3 reasons people on the ketogenic diet avoid eating potato chips.

3. What results would have been obtained from the experiment if fat-free potato chips were used?

Answer 1

(1) Fat is a nonpolar compound which is basically a triglyceride. And Hexane is a very good nonpolar solvent and we know that like dissolves like. So when we put hexane on chips athe fat will dissolve in hexane solvent and be extracted.

(2) Ketogenic diet is a high fat and low carbohydrate diet. People do not eag potatos becaus

(I) in potato chips there is 17% w/w carbohydrate present which is a very high carbohydrate.

(II) total fat content in potato is 0.1 % w/w whivh is very low in fat but we need high fat in ketogenic diet

(III) potato consist about 80% water which is also not fat

(3) if fat free potato is going to be anlysed not fat will be recovery after extraction of fat from the chips. Hexane will ne remain unchange without didsove any fat solute in it.