Life Sciences, Soka University of America, Aliso Viejo, CA 92656, USA.
Pharmaceutical and Translational Sciences, School of Pharmacy, University of California, Los Angeles, CA 90033, USA.
Nutrients. 2022 Oct 30;14(21):4565. doi: 10.3390/nu14214565.
While increased intake of dietary fiber is known to reduce postprandial glycemic response, it is less understood whether the disruption of dietary fiber, in a blender, alters the postprandial glycemic response. We compared the postprandial glycemic response in 20 young, healthy college students (12 female, 8 male) after consuming whole fruit vs. blended fruit. The fruit included gala apple, with the seeds removed, and blackberries. We used a repeated measures two-way ANOVA with fruit treatment as the within-subject variable, sex as the between-subjects factor, and glucose maximum, glucose incremental area under the curve (iAUC), and 60 min glucose as dependent variables. Glucose maximum and glucose iAUC were significantly lower (p < 0.05) in blended fruit compared to whole fruit and 60 min glucose was marginally significantly lower (p = 0.057) in blended fruit compared to whole fruit. Sex was not a significant main effect and sex*treatment was not a significant interaction for any of the dependent variables. We hypothesize that a reduced glycemic response in blended apple and blackberries compared to whole apple and blackberries might be associated with the release of dietary fiber and nutritive components from ground blackberry seeds.
虽然已知增加膳食纤维的摄入量可以降低餐后血糖反应，但对于搅拌机破坏膳食纤维是否会改变餐后血糖反应，了解较少。我们比较了 20 名年轻健康大学生（12 名女性，8 名男性）食用完整水果与混合水果后的餐后血糖反应。水果包括 gala 苹果（去籽）和黑莓。我们使用重复测量双向方差分析，以水果处理为内变量，性别为组间变量，以血糖最大值、血糖增量曲线下面积（iAUC）和 60 分钟血糖为因变量。与完整水果相比，混合水果的血糖最大值和血糖 iAUC 明显降低（p < 0.05），而与完整水果相比，混合水果的 60 分钟血糖略显著降低（p = 0.057）。性别不是任何因变量的主要效应，性别*处理也不是显著的交互作用。我们假设与完整苹果和黑莓相比，混合苹果和黑莓的血糖反应降低可能与黑莓种子中膳食纤维和营养成分的释放有关。
