Table 1.

Example of polyphenols studied as antimicrobials.

Poliphenols	Quantity	Effects	References
Hydrolizable tannins	n.a	Bactericidial against Clostridium perfringens	Redondo et al., 2015 [39]
Condensed tannins	n.a.	Bacteriostatic against Clostridium perfringens	Redondo et al., 2015 [39]
Flavonoids	<0.2 g/kg	Antimicrobial against Salmonella spp. and Escherichia coli	Dos Santos et al., 2020 [40]
Andrographolide flavonoid and tannins	0.3%	Antibacterial against Escherichia coli	Hidanah et al., 2020 [41]
Magnolol	200 mg/kg	Antimicrobial against Escherichia coli	Chen et al., 2020 [42]
Flavonoids	30 g/kg	Antimicrobial against Escherichia coli	Balenović et al., 2018 [43]
Thymol and carvacrol	8% and 4.9%	Antimicrobial	Ramirez et al., 2021 [44]
Tannins, flavonoids and phenols	0.45 g/L	Anticoccidial against Eimeria oocyst antimicrobial	Oyeleke et al., 2021 [45]
Polyphenols	0.263 g/kg; 0.556 g/kg	Antimicrobial against Campylobacter spp.	Branciari et al., 2016 [46]
Curcumin, thymol, cinnamaldehyde and carvacrol	50 mg/kg and 100 mg/kg	Anticoccidial against Eimeria oocyst and antibacterial against Escherichia coli	Galli et al., 2020a [47]
Curcumin, resveratrol, yuccaloids	100 mg/kg and 250 mg/kg	Antimicrobial and anticoccidial against Eimeria	Galli et al., 2020b [48]
Curcumin, thymol, cinnamaldehyde and carvacrol	50 mg/kg and 100 mg/kg	Anticoccidial against Eimeria oocyst and antibacterial against Escherichia coli	Galli et al., 2020a [47]