Effect of long-term consumption of amylose vs amylopectin starch on metabolic variables in human subjects.
Long-term consumption of high-amylose starch on insulin and glucose response was investigated in 24 men: 10 control and 14 hyperinsulinemic (HI) subjects. Subjects consumed products made with standard (70% amylopectin, 30% amylose) or high-amylose (70% amylose, 30% amylopectin) cornstarch for two 14-wk periods in a crossover pattern. Starch products replaced usual starches in the self-selected diet for 10 wk followed by 4 wk of a controlled diet. After a starch-tolerance test with bread made from the starch consumed during that period, the insulin response curve area was significantly lower in all subjects after amylose consumption (P < 0.002). Glucose responses in HI and control subjects were similar and did not vary with the type of starch. Fasting triglyceride concentrations were significantly lower in subjects who consumed the high-amylose compared with the standard-starch diet throughout the study. Chronic consumption of high-amylose foods normalized the insulin response of hyperinsulinemic subjects and showed a potential benefit for diabetic subjects.
Beltsville Human Nutrition Research Center, US Department of Agriculture, MD 20705-2350.
K M
KM
Behall
J C
JC
Howe
D000328:Adult; D000687:Amylopectin / Q000008:administration & dosage / Q000494:pharmacology*; D000688:Amylose / Q000008:administration & dosage / Q000494:pharmacology*; D001786:Blood Glucose / Q000187:drug effects; D004040:Dietary Carbohydrates; D005215:Fasting / Q000378:metabolism; D006801:Humans; D006946:Hyperinsulinism / Q000097:blood; D007328:Insulin / Q000097:blood; D008297:Male; D008875:Middle Aged; D014280:Triglycerides / Q000097:blood
D001786:Blood Glucose; D004040:Dietary Carbohydrates; D007328:Insulin; D014280:Triglycerides; D000688:Amylose; D000687:Amylopectin