“…Plant‐derived antimicrobials have been researched and consumed frequently over the past decade to improve quality of health and provide ethnopharmacological remedies (Nittayananta, Limsuwan, Srichana, Sae‐Wong, & Amnuaikit, ; Tang, Prodhan, Biswas, Le, & Sekaran, ). Flavonoid, which is the most abundant type of polyphenolic compound found in plant materials, was studied to increase in concentration and antibacterial activity using acid hydrolysis (Min, Kim, Lee, Kim, & Paik, ), fermentation (Saleh et al, ), and silver nanoparticles (Rashid et al, ). In this study, fermentation was used to increase the antimicrobial activity of I. britannica extract.…”