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. 2021 Sep 6;2021:6676444. doi: 10.1155/2021/6676444

Table 1.

Impact of polyphenols on gut microbiota in animal-based studies.

Compounds Dose (animal species) Treatment Microbial population Microbial population References
Tea polyphenols 0.2% (pigs) 2 weeks ↑Lactobacilli Agrobacterium tumefaciens, P. aeruginosa, C. perfringens [146]
Low bush wild blue berries 20 g/feed/day (rats) 6 weeks Thermomonospora spp., Corynebacteria spp., Slackia spp. Lactobacillus spp., Enterococcus spp. [147]
Black currant extract (leaf or berry) 30 mg/kg leaf, 13.4 mg/kg berry (3 times/week) (rats) 4 weeks Corynebacteria spp., Lactobacilli (berry extract), Bifidobacteria (leaf and berry extract) [148]
Resveratrol 1 mg/kg/day (rats) 25 days Lactobacilli, Bifidobacteria [149]
Apple pomace juice colloid 5% dietary suppl. 6 weeks Bacteroidaceae [150]
Apple juice Free access (rats) 4 weeks Lactobacilli, Bifidobacteria [151]
Red wine polyphenols, powder 50 mg/kg (rats) 16 weeks Lactobacilli, Bifidobacteria Propionibacteria, Bacteroides, Clostridia [152]
Proanthocyanidins extracted from Acacia angustissima 0.7% (low tannin diet) and 2.0% (high tannin diet) (rats) 3.5 weeks, treatment + 3.5-week washout Bacteroides fragilis groups, Bacteroides-Prevotella-Porphyromonas groups C. leptum group [153]
Green tea 1.5 g/day (calves) 4 weeks Bifidobacterium spp., Lactobacillus spp., C. perfringens [133]