Goji berry juice fermented by probiotics attenuates dextran sodium sulfate-induced ulcerative colitis in mice

•The fermented and unfermented goji berry juices attenuated dextran sodium sulfate induced colitis.•The probiotics-fermented goji berry juice treatment (FGJ, 20 mL/kg/d) prevented histological damage.•FGJ enhanced intestinal integrity and modulated inflammatory cytokines in serum and colon.•The key gut bacteria at the phylums, family and genus level were regulated by FGJ.