Print Email Facebook Twitter Digestibility of resistant starch containing preparations using two in vitro models Title Digestibility of resistant starch containing preparations using two in vitro models Author Fässler, C. Arrigoni, E. Venema, K. Hafner, V. Brouns, F. Amadò, R. TNO Kwaliteit van Leven Publication year 2006 Abstract Background: Resistant starch (RS) is known for potential health benefits in the human colon. To investigate these positive effects it is important to be able to predict the amount, and the structure of starch reaching the large intestine. Aim of the study: The aim of this study was to compare two different in vitro models simulating the digestibility of two RS containing preparations. Methods: The substrates, high amylose maize (HAM) containing RS type 2, and retrograded long chain tapioca maltodextrins (RTmd) containing RS type 3 were in vitro digested using a batch and a dynamic model, respectively. Both preparations were characterized before and after digestion by using X-Ray and DSC, and by measuring their total starch, RS and protein contents. Results: Using both digestion models, 60-61 g/100 g of RTmd turned out to be indigestible, which is very well in accordance with 59 g/100 g found in vivo after feeding RTmd to ileostomy patients. In contrast, dynamic and batch in vitro digestion experiments using HAM as a substrate led to 58 g/100 g and 66 g/100 g RS recovery. The degradability of HAM is more affected by differences in experimental parameters compared to RTmd. The main variations between the two in vitro digestion methods are the enzyme preparations used, incubation times and mechanical stress exerted on the substrate. However, for both preparations dynamically digested fractions led to lower amounts of analytically RS and a lower crystallinity. Conclusions: The two in vitro digestion methods used attacked the starch molecules differently, which influenced starch digestibility of HAM but not of RTmd. © 2006 Steinkopff Verlag Darmstadt. Subject NutritionBiomedical ResearchDSCIn vitro digestionResistant starch type 2Resistant starch type 3X-rayamylosemaltodextrinresistant starchstarcharticlecomparative studyconcentration responsecontrolled studycrystal structuredifferential scanning calorimetrydigestionfood analysishumanileostomyin vitro studyincubation timemaizemechanical stressmodelmolecular dynamicsprotein analysisprotein contenttapiocaX ray analysisAmyloseDietary FiberDigestionDose-Response Relationship, DrugPolysaccharidesStarchSubstrate SpecificityTime FactorsManihot esculentaZea mays To reference this document use: http://resolver.tudelft.nl/uuid:d93379c9-eaef-4f8a-96e5-b53cd7621ada DOI https://doi.org/10.1007/s00394-006-0618-7 TNO identifier 239741 ISSN 1436-6207 Source European Journal of Nutrition, 45 (8), 445-453 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.