Could We Really Use Aloe vera Food Supplements to Treat Diabetes? Quality Control Issues

Figure 3

HPLC profile of Aloe vera juices. From lower to upper traces are AV-1, AV-2, AV-3, and AV-4, respectively. The chromatogram was obtained from 5-fold dilution of the samples and UV monitoring at 250 nm. Peaks at 2.1 and 23.2 min represent the ascorbic acid antioxidant and potassium sorbate/sodium benzoate preservative additives, respectively. The instrumental set-up was as described in Materials and Methods and the mobile phase was a mixture of water and methanol.