Effects of Fermented Milk with Live Bifidobacterium lactis Y6 on Intestinal Health in People with Digestive Dysfunction

To investigate the effects of administering fermented milk with live Bifidobacterium lactis Y6 on intestinal health in people with digestive dysfunction, a dietary intervention experiment was conducted. Volunteers with digestive problems were selected to consume 200 mL Y6 fermented milk daily for 4 weeks. Clinical scores were performed before and after the intervention, the Illumina PE300 sequencing platform was used to perform high-throughput sequencing of 16S rDNA PCR product fragments of fecal microorganisms in volunteers, the content of short-chain fatty acids (SCFAs) in feces was determined using gas chromatography. The results showed that drinking Y6 fermented milk had a significant improvement on clinical symptoms caused by digestive dysfunction (P<0.01). High-throughput sequencing results showed that drinking Y6 fermented milk had significant effect on the composition of gut microbiota rather than the diversity and richness. The relative abundance of beneficial bacteria Akkermansia, Collinse and Erysipelotrichaceae_UCG_003 genera increased while the harmful bacteria Lachnoclostridium genera reduced. The contents of intestinal SCFAs (acetic acid, propionic acid and butyric acid) increased significantly (P<0.05). The intervention of fermented milk with live Bifidobacterium lactis Y6 can significantly improve the intestinal health of people with digestive dysfunction, providing a theoretical basis for the application of Y6 strains

Evaluation of SrSc0.175Nb0.025Co0.8O3-δ perovskite as a cathode for proton-conducting solid oxide fuel cells: The possibility of in situ creating protonic conductivity and electrochemical performance

Proton-conducting solid oxide fuel cells (H+-SOFCs) have attracted considerable interest recently. However, the overall cell performance of H+-SOFCs is still low due to the lack of a promising cathode material. In this study, SrSc0.175Nb0.025Co0.8O3-δ (SSNC) was synthesized for evaluation as a cathode material in H+-SOFCs based on a BaZr0.1Ce0.7Y0.2O3-δ (BZCY) electrolyte. The chemical compatibility and stability of the SSNC cathode with the BZCY electrolyte in humidified air were studied. In addition, the electrochemical behavior of the SSNC cathode on the BZCY electrolyte was investigated using SSNC/BZCY/SSNC symmetrical cells at 600 °C in dry air and humidified air at various H2O partial pressures. Promising electrocatalytic activity was observed for the SSNC cathode in humidified air. The area specific resistance obtained on symmetrical cells at 600 °C in a 10% H2O-air atmosphere was 0.26 Ω cm2. A promising peak power density of 498 mW cm−2 was obtained using an anode-supported cell with a 46 μm-thick BZCY electrolyte layer at 700 °C