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 dehydrogenase (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 biomaterial for functional food and cosmetics.
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