Question

1. What changes to the migration pattern would you expect if the solvent system contained more...

1. What changes to the migration pattern would you expect if the solvent system contained more water? More chloroform? TLC Analysis of Egg Lipid

Homework Answers

Answer #1

Egg lipid generally consists of three major components: lipids (less polar fatty compounds); cholesterol ( the most polar component due to OH groups); & palmitate (more polar than lipids)

T LC is a technique based on adsorption & desorption phenomenon. Less or non polar components are soluble in less or non polar solvents and dragged towards the solvent front. & polar components by polar solvents.

If water is more in mobile phase, the solvent becomes more polar& hence the polar components are eluted first.

If chloroform is more in amount, it dissolves non polar components in it & hence drags non polar lipids towards the solventfront.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Which TLC solvent system (2:1 Hexanes/Ethyl acetate or 4:1 Hexanes/Ethyl acetate) do you expect will lead...
Which TLC solvent system (2:1 Hexanes/Ethyl acetate or 4:1 Hexanes/Ethyl acetate) do you expect will lead to a higher Rf when analyzing banana oil? Explain your answer in DETAIL, which solvent is morepolar/nonpolar and WHY that would effect the Rf
Which of these TLC solvent systems listed below is the most polar and explain why? 1:2...
Which of these TLC solvent systems listed below is the most polar and explain why? 1:2 (v:v) Hexane:diethyl ether 2:1 (v:v) Hexane:diethyl ether 1:3 (v:v) Hexane:diethyl ether 3:1 (v:v) Hexane:diethyl ether 1:1(v:v) Hexane:diethyl ether             (a) The Rf of compound B is? Circle the correct answer. 0.47 0.54 0.60 0.64 0.69 0.78 0.82 1.00 (b) Looking at the TLC plate in 4(a), which compound interacts least with the stationary phase? Explain (4 pts) Would you need to use a more...
Which solvent system is more polar 30% Acetone/70% Hexane OR Ethanol? How would you be able...
Which solvent system is more polar 30% Acetone/70% Hexane OR Ethanol? How would you be able to tell this from a column chromatography? I am just confused about this. I think that it would be Ethanol. But I am unsure how to tell that from the column chromatography because wouldn't the more polar solvent take the beta carotene with it instead of the chlorophyll?
Ethyl acetate is another common organic solvent used in the type of TLC experiment you performed:...
Ethyl acetate is another common organic solvent used in the type of TLC experiment you performed: it has a higher molecular weight and boiling point than either petroleum ether or diethyl ether, and is more polar than them as well. If ethyl acetate had been used as the mobile phase for a TLC analysis of F and AF, how would their Rf values compare to those found using the 1:1 solvent mixture you used? That is, predict how the behavior...
Predict what changes, if any, would you expect in the 1H NMR spectrum if trimethylazulene in...
Predict what changes, if any, would you expect in the 1H NMR spectrum if trimethylazulene in CDCl3 were treated with D2O and a small amount of D2SO4. Any changes in the 13C NMR? What changes, if any, would you expect in the 1H NMR spectrum if trimethylazulene were treated with D2O and a small amount of KOtBu? Any changes in the 13C NMR?
1. Which would you expect to have a larger Rf value by TLC: the starting material,...
1. Which would you expect to have a larger Rf value by TLC: the starting material, 9- fluorenol, or the product of this reaction 9-fluorenone? 2. For the reaction you are about to run, what is the oxidant and what is the reductant?
Would You expect the analysis produced by the Legislative Analyst’s Office to be more or less...
Would You expect the analysis produced by the Legislative Analyst’s Office to be more or less politically neutral than analytical offices within the California executive branch?
What changes in SPO2 levels would you expect to find during exercise in well-trained individuals? How...
What changes in SPO2 levels would you expect to find during exercise in well-trained individuals? How would that be different in individuals who are not well-trained? How would you explain that physiologically?
Question 11.29, 11.30 What change would you expect on the rate of the SN2 reaction of...
Question 11.29, 11.30 What change would you expect on the rate of the SN2 reaction of 1-iodo-2-methylbutane with cyanide ion if the nucleophile concentration is halved and the alkyl halide concentration is unchanged? What change would you expect on the rate of the reaction of ethanol with 2-iodo-2-methylbutane if the nucleophile concentration is halved by adding diethyl ether as an inert solvent and the alkyl halide concentration is unchanged? ______________________________________________________________________________________ Question 11.33 Draw the product you expect from the reaction...
why is Diel Alder reaction faster in water than methanol? What solvent would you choose to...
why is Diel Alder reaction faster in water than methanol? What solvent would you choose to make the kinetics of this reaction even faster?