Evaluation of Bioactive Potential of an Aloe vera Sterol Extract
Article first published online: 16 AUG 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 27, Issue 6, pages 864–868, June 2013
How to Cite
Bawankar, R., Deepti, V. C., Singh, P., Subashkumar, R., Vivekanandhan, G. and Babu, S. (2013), Evaluation of Bioactive Potential of an Aloe vera Sterol Extract. Phytother. Res., 27: 864–868. doi: 10.1002/ptr.4827
- Issue published online: 7 JUN 2013
- Article first published online: 16 AUG 2012
- Manuscript Accepted: 25 JUL 2012
- Manuscript Revised: 20 JUL 2012
- Manuscript Received: 11 JUL 2011
- Aloe vera;
We prepared a crude gel material from Aloe vera succulent leaf tissues. The ethanolic extract of lyophilized A. vera gel was used for the GC-MS analysis. Hexadecanoic acid (22.22%) was identified as major compound. Sitosterol and stigmasterol were found to be 2.89% and 2.1% in the extract. HPLC analysis was carried out to confirm the presence of stigmasterol. The concentration of sterol extract needed to scavenge DPPH free radical by 50% was calculated as 5.2 mg mL−1. In the FRAP assay, the sterol extract showed significant hydroxyl radical scavenging in a dose-dependent manner (IC50 value 1.17 µg mL−1). Concentration of the sample required to reduce lipid peroxidation was found to be 4.18 µg mL−1, and the extract also possessed acetylcholinesterase activity (IC50 - 5.26 µg mL−1). Catalase activity was 0.196 μM H2O2 decomposed min−1 µg−1 protein, whereas the peroxidase activity was 17.01 μM of pyragallol oxidized min−1 µg−1 protein. The extract recorded higher activity against growth of S. greseus and C. albicans in the experiments carried out to determine antibacterial and antifungal activity, respectively. Copyright © 2012 John Wiley & Sons, Ltd.