In vitro digestion and fecal fermentation behaviors of a pectic polysaccharide from okra (Abelmoschus esculentus) and its impacts on human gut microbiota

This study aimed to understand the in vitro simulated digestion and fecal fermentation behaviors of a pectic polysaccharide from okra (OPP-D) and its impacts on human gut microbiota. Results showed that the content of reducing sugars increased from 0.20 to 0.35 mg/mL during gastric digestion. The molecular weight of OPP-D slightly decreased from 2.242 × 105 to 1.932 × 105 Da during in vitro digestion, and then significantly decreased to 1.269 ×...