Implications for Degenerative Disorders: Antioxidative Activity, Total Phenols, Flavonoids, Ascorbic Acid, β‐Carotene and β‐Tocopherol in Aloe vera

Abstract

In order to demonstrate whether the known biological effects of Aloe vera (L.) Burm. fil. could correlate with the antioxidant activity of the plant, the antioxidant activity of the aqueous leaf extract was investigated. The present study demonstrated that the aqueous extract from A. vera leaves contained naturally occuring antioxidant components, including total phenols, flavonoids, ascorbic acid, β-carotene and α-tocopherol. The extract exhibited inhibitory capacity against Fe3+/ascorbic acid induced phosphatidylcholine liposome oxidation, scavenged stable DPPH•, ABTS•+ and superoxide anion radicals, and acted as reductant. In contrast, the leaf inner gel did not show any antioxidant activity. It was concluded that the known beneficial effects of Aloe vera could be attributed to its antioxidant activity and could be related to the presence of phenolic compounds and antioxidant vitamins.

Synthesis of glycosides of resveratrol, pterostilbene, and piceatannol, and their anti-oxidant, anti-allergic, and neuroprotective activities

“…The DPPH free-radical-scavenging activities of resveratrol, pterostilbene, piceatannol, their β-glucosides, resveratrol 3-maltoside, and resveratrol 4′-β-maltoside were determined as follows. 19,20) DPPH was dissolved in methanol (MeOH) (0.15 mM). The sample solutions were prepared by dissolving each compound in MeOH (2 mM).…”

Medicinal Plants from Jordan in the Treatment of Diabetes: Traditional Uses vs.In VitroandIn VivoEvaluations – Part 2

“…Cinnamoyl, p-coumaroyl, feruloyl, caffeoyl aloesin [159]. Phenols, flavonoids, ascorbic acid, β-carotene and α-tocopherol [160]. Mannose polymers with some glucose and other sugars; mainly acemannan, glycoproteins, enzymes, amino acids, vitamins, and minerals [161].…”

Aloe veraextract activity on human corneal cells

“…Moreover, therapeutic activity may be associated with substance mixture coming from ethyl acetate extraction of Aloe vera which demonstrated concentration-dependent ROS scavenging action. It is accepted that antioxidant activity of Aloe vera is related to the presence of phenolic compounds in its extracts (Ozsoy et al, 2009). This effect is also regarded the most beneficial therapeutic activity of this plant.…”

“…Aloe vera is used both internally and externally on humans in a form of alternative medicine as well as in the home in first aid. It has been shown that Aloe vera expresses wound-and burn-healing effects and shows immunomodulatory, anti-inflammatory, antiparasitic, UV protective, antioxidant, antiviral, antitumor and antidiabetic activities (Lee et al, 2000;Choi & Chung, 2003;Sarkar et al, 2005;Yoo et al, 2008;Kigondu et al, 2009;Ozsoy et al, 2009). Telefo et al (1998Telefo et al ( , 2002Telefo et al ( , 2004) also demonstrated the effect of Aloe vera on the reproductive system in rats where the plant extract regulated the steroidogenesis and hormone levels, menstrual cycle, ovarian and uterine weight and was used to treat dysmenorrhea or infertility.…”