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Yufei Tian,Wei Yang,Gang Chen,Chuanlong Men,Yifan Gu,Ruilin Zhang,Laiyou Wang,Xin Zhang 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.2
Currently, gut microbiota living in the gastrointestinaltract, plays an important role in regulatinghost’s sleep and circadian rhythms. As a tool, gut microbiotahas great potential for treating circadian disturbanceand circadian insomnia. However, the relationship betweengut microbiota and circadian rhythms is still unclear, andthe mechanism of action has still been the focus ofmicrobiome research. Therefore, this article summarizesthe current evidences associating gut microbiota with factorsthat impact host circadian rhythms neurology sleepdisorder. Moreover, we discuss the changes to these systemsin sleep disorder and the potential mechanism ofintestinal microbiota in regulating circadian rhythms neurologysleep disorder via microbial metabolites. Meanwhile,based on the role of intestinal flora, it is provided anovel insight into circadian related insomnia and will bebenefit the dietary treatment of circadian disturbance andthe circadian related insomnia.
Yao Qing,Wu Haoyi,Jin Yahong,Wang Chuanlong,Zhang Ruiting,Lin Yujia,Wu Sijian,Hu Yihua 한국물리학회 2022 Current Applied Physics Vol.41 No.-
Nitrogen-doped graphene quantum dots (N-GQD) were synthesized by direct thermal decomposition of ammonium citrate tribasic. With the increment of torrefaction temperature, the average size of N-GQD was increased from 2.56 to 3.73 nm. Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy analysis (XPS) proved the successful doping of nitrogen atoms. Besides, the N-GQDs showed blue fluorescence which was quenched by Fe3+ ions, and the fluorescence intensity of N-GQDs decayed exponentially. Accordingly, the same quenching effect was observed on a test paper prepared by soaking paper in N-GQDs dispersion. The quenching mechanism was due to electron transfer between Fe3+ and functional groups on the surface of N-GQDs which could be confirmed by XPS and diameter growth. Therefore, through this simple method, N-GQDs with high blue fluorescence and high production yield (64%) can be prepared, which provided a new strategy for monitoring and collecting Fe3+ in environmental water.