Effect of dandelion root polysaccharide on the pasting, gelatinization, rheology, structural properties and in vitro digestibility of corn starch

Abstract

The influence of dandelion root polysaccharide (DRP) on gelatinization properties and in vitro digestibility of corn starch was investigated. Pasting behaviors indicated that the addition of DRP led to an increase of...

Effect of dandelion root polysaccharide on structure, rheology and retrogradation properties of corn starch during storage

“…DRP was an acid heteropolysaccharide including six monosaccharides and contained small amounts of protein and reducing sugar. The detailed data have been published in our previous study (Gao et al ., 2021).…”

“…4. DRP and water molecules entered into starch granules together in the gelatinisation process, and the content of leached amylose was decreased due to the wrapping effect of DRP; it is that DRP linked to the leached amylose through hydrogen bonds and wrapped around the starch granules (Gao et al ., 2021). During retrogradation, DRP penetrated into the interior of amylose molecules and led to the increase of the distance between starch chains, thus inhibiting the formation of the intermolecular double helix (Zhang et al ., 2018), so short‐term retrogradation was inhibited.…”

“…Physicochemical properties of DRP including chemical composition and monosaccharide composition were determined. The detailed procedure and measurement methods were described in our published paper (Gao et al ., 2021).…”

“…To determine the degree of short‐range crystallisation of starch paste in the retrogradation process, the strength ratios of 1047/1022 (DO) and 995/1022 (DD) were calculated. The calculation process was according to the reported paper (Gao et al ., 2021).…”

“…Our previous research showed that the addition of dandelion root polysaccharide (DRP) played a role in inhibiting the gelatinisation of CS and reducing the amount of rapidly digested starch during in vitro digestion. (Gao et al ., 2021). However, the effect of DRP on the retrogradation properties of CS is not clear.…”