Antidiabetic and antioxidant potentials of spent turmeric oleoresin, a by-product from curcumin production industry
Journal Title: Asian Pacific Journal of Tropical Disease - Year 2012, Vol 2, Issue 0
Abstract
Objective: To investigate the antidiabetic and antioxidant activity of spent turmeric oleoresin (STO). Methods: Antidiabetic activity of STO evaluated by α - amylase and α - glucosidase enzyme inhibition assays. The antioxidant capacity studied by DPPH. , ABTS., superoxide radical scavenging and metal chelating activity methods. Results: The STO showed good antidiabetic activity by inhibiting key enzymes linked to type 2 diabetes, viz α -glucosidase and α -amylase with an IC50values of 0.71 and 0.16毺 g/mL respectively. The IC50 values for DPPH. and ABTS. assay were 58.1 and 33 毺 g/mL respectively. STO effectively scavenged the superoxide free radical with an IC50 value of 61.5毺 g/mL and showed a moderate iron chelation property. Conclusions: The above study reveals that the spent turmeric oleoresin being wasted at present can be used as antioxidant and antidiabetic agent in food and neutraceutical products.
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