Postprandial effects of resistant starch corn porridges on blood glucose and satiety responses in non-overweight and overweight adults

dc.contributor.advisor Suzanne Hendrich
dc.contributor.author Alexander, Danielle
dc.contributor.department Food Science and Human Nutrition
dc.date 2018-08-11T14:29:36.000
dc.date.accessioned 2020-06-30T02:44:42Z
dc.date.available 2020-06-30T02:44:42Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2012
dc.date.embargo 2013-06-05
dc.date.issued 2012-01-01
dc.description.abstract <p>Background: Diabetes and obesity are major health concerns in the United States. There are several lifestyle factors that contribute to the development of these conditions and diet plays a large role in both etiology and treatment of these diseases. Poor carbohydrate quality and excess caloric intake can contribute to obesity and the development of insulin resistance, eventually progressing into Type 2 diabetes (DM2) and its associated co-morbidities. Resistant starch (RS), a type of dietary fiber, is thought to be a tool for prevention and treatment of obesity and DM2 due to its slow release of glucose post prandially, low energy density, and colonic health benefits from fermentation in the colon.</p> <p>Methods: Twenty healthy non-overweight/obese weight (n=10; BMI 18.5-24.9 kg/m2) and overweight/obese (n=10; BMI > 25.0 kg/m2) consumed, in random order, 3 breakfast corn porridges providing 25 g starch derived from corn lines varying in levels of resistant starch. The porridges contained 3.1%, 8.4% and 28.9% RS of total starch. Post-prandial blood glucose was measured using a glucometer at baseline, 15, 30, 60 and 120 minutes. Postprandial satiety using a 100 mm Visual Analog Scales (VAS) was measured at baseline, 30, 60, 120, and 180 minutes. Subjects recorded 24 h food intake and gastrointestinal symptoms upon completion of each visit.</p> <p>Results: There were no differences in post-prandial blood glucose, satiety, or food intake responses between non-overweight/obese and overweight/obese participants with treatments. After data from the 2 weight groups were combined, mean plasma glucose at peak time-point 30 minutes was significantly lower in subjects consuming 28.9% RS treatment compared to the other treatments. Baseline-adjusted plasma glucose AUC was also significantly lower in subjects consuming the 28.9% RS porridge compared to the other porridges. There were no differences in subjective satiety or 24-hour food intake. Minimal gastrointestinal symptoms were experienced in the 24 hours following all 3 test meals.</p> <p>Conclusions: RS substitution improved acute and peak post-prandial glucose responses, but higher doses of RS (greater than approximately 30% or more of total starch, the maximum provided in our study) may be needed to increase satiety and decrease food-intake over 24 h after ingesting the RS.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/12722/
dc.identifier.articleid 3729
dc.identifier.contextkey 4186483
dc.identifier.doi https://doi.org/10.31274/etd-180810-1751
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/12722
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/26911
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/12722/Alexander_iastate_0097M_12973.pdf|||Fri Jan 14 19:28:33 UTC 2022
dc.subject.disciplines Food Science
dc.subject.disciplines Human and Clinical Nutrition
dc.subject.disciplines Nutrition
dc.subject.keywords diabetes
dc.subject.keywords glycemia
dc.subject.keywords obesity
dc.subject.keywords resistant starch
dc.subject.keywords satiety
dc.title Postprandial effects of resistant starch corn porridges on blood glucose and satiety responses in non-overweight and overweight adults
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication 4b6428c6-1fda-4a40-b375-456d49d2fb80
thesis.degree.level thesis
thesis.degree.name Master of Science
File
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Alexander_iastate_0097M_12973.pdf
Size:
1.25 MB
Format:
Adobe Portable Document Format
Description: