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AAPS PharmSciTech. 2003 March; 4(1): 27–32.
Published online 2003 January 21. doi:  10.1208/pt040104
PMCID: PMC2750300

Effect of heating temperature and time on pharmaceutical characteristics of albumin microspheres containing 5-fluorouracil


In this study, we found that both heating temperature and heating time affect mean particle size, particle size distribution, and drug entrapment efficiency of albumin microspheres. The change in heating temperature may affect the particle size of the product, especially when heating is carried out at a lower temperature (90°C–120°C). Hence the temperature should be selected on the basis of desired size range. Given that it is desirable for a maximum amount of the drug used in the preparation to become entrapped in microspheres, heating temperature and heating time for denaturation of albumin should be selected cautiously, as both have a significant effect on drug entrapment efficiency. In the present case, the highest entrapment was found in batches prepared by heating at 90°C for 5 minutes. However, the extent of stabilization at the selected temperature and the time of heating should also be taken into consideration, as they may affect the release of drugs to target tissue.

Keywords: albumin microspheres, particle size, 5-fluorouracil (5-FU), drug entrapment efficiency

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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