Riceberry rice puddings: rice-based low glycemic dysphagia diets.

Swallowing difficulty and diabetes mellitus are common in the elderly. However, texture-modified foods suitable for blood sugar control are scarce. This study was aimed to identify texture, glycemic indices (GIs) and postprandial responses of original and high-fiber Riceberry rice puddings.International Dysphagia Diet Standard Initiative (IDDSI)'s methods were used to determine texture. In vitro digestion was performed for estimating glycemic indices. A randomized cross-over controlled trial was conducted in twelve healthy volunteers. Original pudding, high-fiber pudding and white bread containing 40 g carbohydrate each were assigned in random sequence with twelve-day wash-out intervals. Plasma glucose concentrations were measured at 0, 15, 30, 60, 90, 120, 150, and 180 min after food intake. Individual GIs of puddings were calculated.Original and high-fiber puddings were classified as IDDSI level 3 (liquidized) and 4 (pureed), respectively. The in vitro estimated GIs were 51 for original and 48 for high-fiber puddings. Clinical trial showed rapid kinetics (peaked at 30 min) but lower postprandial responses of both puddings, compared to white bread (peaked at 60 min). The adjusted GIs for original and high-fiber puddings were not significantly different (at 41±7.60 and 36±6.40, respectively).Addition of fiber to the original pudding changed physical properties but not significantly reduced the GI. Original and high-fiber Riceberry rice puddings could be low-GI dysphagia diets, which may be useful for step-wise swallowing practice from IDDSI level 3 to 4 for those who also required blood sugar control.