Premium
Evaluation of the prebiotic potential of five kiwifruit cultivars after simulated gastrointestinal digestion and fermentation with human faecal bacteria
Author(s) -
Parkar Shanthi G.,
Simmons Lyall,
Herath Thanuja D.,
Phipps Janet E.,
Trower Tania M.,
Hedderley Duncan I.,
McGhie Tony K.,
Blatchford Paul,
Ansell Juliet,
Sutton Kevin H.,
Ingram John R.
Publication year - 2018
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.13697
Subject(s) - prebiotic , inulin , food science , fermentation , polyphenol , digestion (alchemy) , resistant starch , bifidobacterium , biology , gut flora , bacteroides , chemistry , bacteria , lactobacillus , biochemistry , antioxidant , starch , genetics , chromatography
Summary We studied the in vitro prebiotic potential of five different cultivars of kiwifruit including the green‐fleshed ‘Hayward’ and ‘Zesh004’ and the gold‐fleshed ‘Hort16A’, ‘Zesy002’ and ‘Zesy003’. The kiwifruit (25 g fresh weight equivalent) were subjected to simulated gastrointestinal digestion before fermentation for 16 h with faecal microbiota from ten individual donors. Microbial metabolites including lactate were quantified while changes in microbiome composition were determined by 16S rRNA sequencing. Lactate concentrations were highest with ‘Hayward’ ( P = 0.01) and correlated with the amount of the kiwifruit fibre and polyphenols, chlorogenic acid and cryptochlorogenic acid. All the kiwifruit behaved similar to inulin in increasing the relative abundance of Bifidobacterium ( P < 0.001), but unlike inulin, significantly ( P < 0.001) increased the abundances of Ruminococcaceae and decreased Bacteroides . In comparison with inulin, the green‐fleshed kiwifruit selectively increased Lachnospira ( P = 0.008) while the gold‐fleshed kiwi fruit increased Akkermansia ( P < 0.001). These data suggest that the fibre and polyphenol content of the kiwifruit play a role in modulating gut microbial metabolism. Further clinical studies with these kiwifruit cultivars are required to confirm the potential prebiotic benefits that may be achieved by normal dietary intervention.