The Beneficial Effect of Watercress (Nasturtium officinale) and Black Rice (Oryza sativa L.) Bran Supplementation in Glycemic Improvement

This study was to analyze the effect of watercress (WC) and black rice bran (BRB) in glycemic improvement of rat induced by Streptozotocin-nicotinamide (STZ-Na). Thirty-five male Wistar rat were randomly divided into 5 groups, healthy rat (K-), group induced by STZ-Na (K+), group given WC (P1), group given BRB (P2), group given WC + BRB (P3) for 4 weeks. Fasting blood glucose was measured by GOD-PAP method. Either WC or BRB can improve glycemic status of P1, P2, P3. Combination of WC and BRB shows synergistic effect and is more effective in improving glycemic status than WC or BRB alone.