RÉSUMÉ
This study investigated 2 possible approaches to dietary control of acute postprandial responses to a rice-based meal under equicarbohydrate conditions: (1) a dried apple (DA) preload and (2) co-ingestion of vinegar-soaked DA. We hypothesized that both approaches would counteract hyperglycemia with no negative effect on satiety, possibly explained by an inhibitory effect on digestive enzyme activity and/or the effect of the sugar component of the DA. Fifteen healthy female subjects consumed (1) rice, (2) co-ingestion of DA and rice (DAâ¯+â¯R), (3) DA preload and rice (PDAâ¯+â¯R), (4) rice with sugar solution (same sugar profile as in DA) preloaded (PSSâ¯+â¯R), or (5) co-ingestion of rice with vinegar-soaked DA (VDAâ¯+â¯R) in a randomized crossover trial. Acute postprandial glycemic response tests and subjective satiety tests were conducted for each test meal. Compared with rice reference, the PAâ¯+â¯R and PSSâ¯+â¯R achieved 31.4% and 36.3% reduction of the incremental area under the curve0-120, 24.3% and 27.0% decreases in the average glucose peak, along with 21.6% and 27.0% decreases in glycemic excursion in 240â¯minutes, whereas the VDAâ¯+â¯R resulted 42.4%, 27.0%, and 29.7% reductions in the incremental area under the curve0-120, peak, and glycemic excursion, respectively. The DA-containing meals had no effect or a favorable effect on satiety. The in vitro assay found larger resistant starch and smaller rapid digestible starch fractions in DAâ¯+â¯R and VDAâ¯+â¯R meals compared to those of the rice reference (Pâ¯<â¯.001). The result of this study supported the research hypothesis, and the DA-containing meals could be considered as a potential dietary approach for glycemic management.