Biological Activity of Aloe Vera

Abstract: In vitro biological activities of Aloe vera gel and skin extracts were evaluated. Total polyphenol contents of Aloe vera skin were measured 41.12 mg/g. DPPH radical scavenging activity of Aloe vera skin-70 % EtOH extract, Aloe vera skin-water extract, Aloe vera gel-70 % EtOH extract and Aloe vera gel-water extract were 55%, 38%, 11 % and 10%, respectively. In addition, 70 % EtOH extract and water extract were compared with respect to SOD-like antioxidant activity of Aloe vera-70 % EtOH extract has higher activity than Aloe vera water extract. Tyrosinase inhibition rate of Aloe vera gel extract was higher than Aloe vera skin extract. Alcohol dehy-drogenase (ADH) and Acetaldehyde dehydrogenase (ALDH) relative percentage activity of Aloe vera gel extract were 126 % and 216%, respectively. It was suggested that Aloe vera gel and skin extracts could be used as a functional biomate