Effects of Quercetin on the Intestinal Microflora of Freshwater Dark Sleeper <i>Odontobutis potamophila</i>

• Main Authors: Chenxi Zhu (Author), Guoxing Liu (Author), Xiankun Gu (Author), Tongqing Zhang (Author), Aijun Xia (Author), You Zheng (Author), Jiawen Yin (Author), Mingming Han (Author), Qichen Jiang (Author)
• Format: Book
• Published: MDPI AG, 2022-10-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Flavonoids have antimicrobial and anti-oxidation properties. The effects of the flavonoid quercetin on the intestinal microflora of freshwater dark sleeper <i>Odontobutis potamophila</i> were tested for the first time. <i>Odontobutis potamophila</i> juveniles were treated with quercetin for 21 days at one of three concentrations (2.5, 5.0, or 10.0 mg/L) and compared with a control group that was not treated with quercetin. Quercetin improved the stability of the intestinal flora in <i>O. potamophila</i> and the probiotic bacteria <i>Bacillus</i> spp. and <i>Lactobacillus</i> spp. increased in species abundance after the low concentration quercetin treatments. Furthermore, the abundance of pathogenic bacteria <i>Plesiomonas</i> spp., <i>Aeromonas</i> spp., and <i>Shewanella</i> spp. decreased after the fish had been exposed to quercetin. Activity of hepatic antioxidant enzymes (superoxide dismutase, SOD), (glutathione S-transferase, GST), (glutathione peroxidase, GSH-Px), and (total antioxidant capacity, T-AOC) increased in the livers of <i>O. potamophila</i> treated with quercetin, thereby increasing their hepatic antioxidant capacity and their ability to scavenge free radicals.

Item Description

10.3390/antiox11102015
2076-3921