Would you please suggest a simple and rapid protocol/method for measuring the encapsulation efficiency of liposomal Doxorubicin(Cholesterol: DSPC) for example UV/centrifugation techniques.
You can use the UV-Vis spectroscopy method and/or TG analysis for finding encapsulation efficiency. You can study the below articles for more information:
Article Synthesis and evaluation of polyethylene glycol- and folic a...
Article Targeting delivery of Oxaliplatin with smart PEG-modified PA...
Fluorescence. Doxorubicin can be detected by a fluorometer.
I suggest you to release the liposome before quantification and to prepare a standard curve on Doxo with broken liposome to correct for the background noise.
I believe dialysis would be the best methodotology to remove unloaded DOX (and with most compounds loaded in liposomes). The problem with centrifuge is that you will end up with agglomarates and a bad pdi most likely.