Abstract

People with dental problems and dysphagia frequently consume foods in paste form. A strategy is required to mitigate the glycemic responses of these foods. The effect of yam paste ingestion on postprandial glycemic responses was assessed using a two-arm study design for yam paste ingestion: (1) as low- and medium-glycemic index food and (2) as preload and coingested food in a rice meal. In a randomized crossover trial, 18 healthy volunteers consumed (1) low-intensity-cooked yam paste; (2) medium-intensity-cooked yam paste; (3) cooked white rice; (4) coingested low-intensity-cooked yam paste with rice; (5) coingested medium-intensity-cooked yam paste with rice; (6) a preload of low-intensity-cooked yam paste before rice; (7) a preload of medium-intensity-cooked yam paste before rice. Postprandial glycemic responses and satiety assessments were conducted for each food approach. The glycemic characteristics of yam paste were manipulated with the preparatory treatment. Ingesting a preload of 10 g of yam paste before a rice meal resulted in better glycemic responses for 0-60 min in terms of peak glucose value and positive increments under the curve than co-ingesting yam paste with rice, with no adverse effect on satiety, irrespective of the glycemic index of the yam paste. Regarding isocarbohydrates, both low- and medium-glycemic index yam paste preloads curbed the glucose peak value of a rice meal and lowered the glycemic index value of mixed meals in young healthy people.

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