Fermentability of novel type-4 resistant starches in in vitro system

Jennifer M. Erickson, Justin L. Carlson, Maria L. Stewart, Joanne L Slavin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Resistant starches are non-digestible starches that are fermented in the colon by microbiota. These carbohydrates are prebiotic and can be beneficial to consumer health. Many types of resistant starch exist with varying physical properties that may result in differences in fermentability. The objective of this research project was to compare potential prebiotic effects and fermentability of four novel resistant starches using an in vitro fermentation system and measuring changes in total gas production, pH, and formation of SCFAs (short chain fatty acids). Fecal donations were collected from seven healthy volunteers. Four novel resistant starches, modified potato starch (MPS), modified tapioca starch (MTS), and modified maize starches (MMS-1 and MMS-2), were analyzed and compared to polydextrose and short chain fructooligosaccharides (FOS) as controls. After twenty-four hours of fermentation, MPS and MTS responded similarly in gas production (74 mL; 70.6 mL respectively), pH (5.93; 5.93 respectively), and SCFA production (Acetate: 115; 124, Propionate: 21; 26, Butyrate: 29; 31 µmol/mL respectively). While MMS-1 had similar gas production and individual SCFA production, the pH was significantly higher (6.06). The fermentation of MMS-2 produced the least amount of gas (22 mL), with a higher pH (6.34), and lower acetate production (78.4 µmol/mL). All analyzed compounds were fermentable and promoted the formation of beneficial SCFAs.

Original languageEnglish (US)
Article number18
JournalFoods
Volume7
Issue number2
DOIs
StatePublished - Feb 1 2018

Fingerprint

resistant starch
short chain fatty acids
Starch
gas production (biological)
tapioca
potato starch
fermentation
starch
prebiotics
Volatile Fatty Acids
acetates
Gases
fructooligosaccharides
Fermentation
butyrates
corn starch
Prebiotics
research projects
Manihot
propionates

Keywords

  • Dietary fiber
  • Prebiotics
  • Resistant starch

Cite this

Fermentability of novel type-4 resistant starches in in vitro system. / Erickson, Jennifer M.; Carlson, Justin L.; Stewart, Maria L.; Slavin, Joanne L.

In: Foods, Vol. 7, No. 2, 18, 01.02.2018.

Research output: Contribution to journalArticle

Erickson, Jennifer M. ; Carlson, Justin L. ; Stewart, Maria L. ; Slavin, Joanne L. / Fermentability of novel type-4 resistant starches in in vitro system. In: Foods. 2018 ; Vol. 7, No. 2.
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