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The glycemic response does not reflect the in vivo starch digestibility of fiber-rich wheat products in healthy men.
J Nutr. 2012 Feb; 142(2):258-63.JN

Abstract

Starchy food products differ in the rate of starch digestion, which can affect their metabolic impact. In this study, we examined how the in vivo starch digestibility is reflected by the glycemic response, because this response is often used to predict starch digestibility. Ten healthy male volunteers [age 21 ± 0.5 y, BMI 23 ± 0.6 kg/m² (mean ± SEM)] participated in a cross-over study, receiving three different meals: pasta with normal wheat bran (PA) and bread with normal (CB) or purple wheat bran (PBB). Purple wheat bran was added in an attempt to decrease the rate of starch digestion. The meals were enriched in ¹³C and the dual isotope technique was applied to calculate the rate of appearance of exogenous glucose (RaE). The ¹³C-isotopic enrichment of glucose in plasma was measured with GC/combustion/isotope ratio MS (IRMS) and liquid chromatography/IRMS. Both IRMS techniques gave similar results. Plasma glucose concentrations [2-h incremental AUC (iAUC)] did not differ between the test meals. The RaE was similar after consumption of CB and PBB, showing that purple wheat bran in bread does not affect in vivo starch digestibility. However, the iAUC of RaE after men consumed PA was less than after they consumed CB (P < 0.0001) despite the similar glucose response. To conclude, the glycemic response does not always reflect the in vivo starch digestibility. This could have implications for intervention studies in which the glycemic response is used to characterize test products.

Authors+Show Affiliations

Center for Medical Biomics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Controlled Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22223569

Citation

Eelderink, Coby, et al. "The Glycemic Response Does Not Reflect the in Vivo Starch Digestibility of Fiber-rich Wheat Products in Healthy Men." The Journal of Nutrition, vol. 142, no. 2, 2012, pp. 258-63.
Eelderink C, Moerdijk-Poortvliet TC, Wang H, et al. The glycemic response does not reflect the in vivo starch digestibility of fiber-rich wheat products in healthy men. J Nutr. 2012;142(2):258-63.
Eelderink, C., Moerdijk-Poortvliet, T. C., Wang, H., Schepers, M., Preston, T., Boer, T., Vonk, R. J., Schierbeek, H., & Priebe, M. G. (2012). The glycemic response does not reflect the in vivo starch digestibility of fiber-rich wheat products in healthy men. The Journal of Nutrition, 142(2), 258-63. https://doi.org/10.3945/jn.111.147884
Eelderink C, et al. The Glycemic Response Does Not Reflect the in Vivo Starch Digestibility of Fiber-rich Wheat Products in Healthy Men. J Nutr. 2012;142(2):258-63. PubMed PMID: 22223569.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The glycemic response does not reflect the in vivo starch digestibility of fiber-rich wheat products in healthy men. AU - Eelderink,Coby, AU - Moerdijk-Poortvliet,Tanja C W, AU - Wang,Hongwei, AU - Schepers,Marianne, AU - Preston,Tom, AU - Boer,Theo, AU - Vonk,Roel J, AU - Schierbeek,Henk, AU - Priebe,Marion G, Y1 - 2012/01/05/ PY - 2012/1/7/entrez PY - 2012/1/10/pubmed PY - 2012/3/27/medline SP - 258 EP - 63 JF - The Journal of nutrition JO - J Nutr VL - 142 IS - 2 N2 - Starchy food products differ in the rate of starch digestion, which can affect their metabolic impact. In this study, we examined how the in vivo starch digestibility is reflected by the glycemic response, because this response is often used to predict starch digestibility. Ten healthy male volunteers [age 21 ± 0.5 y, BMI 23 ± 0.6 kg/m² (mean ± SEM)] participated in a cross-over study, receiving three different meals: pasta with normal wheat bran (PA) and bread with normal (CB) or purple wheat bran (PBB). Purple wheat bran was added in an attempt to decrease the rate of starch digestion. The meals were enriched in ¹³C and the dual isotope technique was applied to calculate the rate of appearance of exogenous glucose (RaE). The ¹³C-isotopic enrichment of glucose in plasma was measured with GC/combustion/isotope ratio MS (IRMS) and liquid chromatography/IRMS. Both IRMS techniques gave similar results. Plasma glucose concentrations [2-h incremental AUC (iAUC)] did not differ between the test meals. The RaE was similar after consumption of CB and PBB, showing that purple wheat bran in bread does not affect in vivo starch digestibility. However, the iAUC of RaE after men consumed PA was less than after they consumed CB (P < 0.0001) despite the similar glucose response. To conclude, the glycemic response does not always reflect the in vivo starch digestibility. This could have implications for intervention studies in which the glycemic response is used to characterize test products. SN - 1541-6100 UR - https://www.unboundmedicine.com/medline/citation/22223569/The_glycemic_response_does_not_reflect_the_in_vivo_starch_digestibility_of_fiber_rich_wheat_products_in_healthy_men_ L2 - https://academic.oup.com/jn/article-lookup/doi/10.3945/jn.111.147884 DB - PRIME DP - Unbound Medicine ER -