Brand J C, Snow B J, Nabhan G P, Truswell A S
Department of Biochemistry, University of Sydney, Australia.
Am J Clin Nutr. 1990 Mar;51(3):416-20. doi: 10.1093/ajcn/51.3.416.
The in vivo glycemic and insulin responses and in vitro starch digestibility were determined for six staple foods (corn, lima beans, white and yellow teparies, mesquite, and acorns) traditionally consumed by Pima Indians. Equivalent carbohydrate portions (25 g) of the foods were fed to eight healthy Caucasian volunteers. The calculated glycemic indices (GIs) (mean +/- SEM with glucose as the standard) were all low, ranging from 16 +/- 2 for acorns to 40 +/- 5 for corn. Insulin responses and in vitro starch digestibilities correlated with the GI. These results provide further support for the hypothesis that the slow digestion and absorption of starch in traditional foods was a factor that helped protect susceptible populations from developing diabetes.
测定了皮马印第安人传统食用的六种主食（玉米、利马豆、白和黄 teparies、牧豆树和橡子）的体内血糖和胰岛素反应以及体外淀粉消化率。将等量碳水化合物部分（25克）的这些食物喂给八名健康的白种人志愿者。计算得出的血糖指数（GIs）（以葡萄糖为标准的平均值±标准误）均较低，从橡子的16±2到玉米的40±5不等。胰岛素反应和体外淀粉消化率与血糖指数相关。这些结果为以下假设提供了进一步支持：传统食物中淀粉的缓慢消化和吸收是帮助易感人群预防糖尿病的一个因素。
