不同浓度施用植物生长促进激素生长素草-3-乙酸(IAA)和细胞分裂素6-苄基氨基嘌呤(BAP)对油菜种子产量和油质的影响Effect of IAA and BAP application in varying concentration on seed yield and oil quality of Guizotia abyssinica (L.f.) Cass3g样品提取2小时We obtained niger seed oil by SOXTHERM? extraction (in duplicate) using hexane. Seeds were pulverized into a fine powder using an electrical grinder, then packed (3 g) in cellulose extraction thimbles . Duplicate thimbles were placed in an extractor and hot (60–70 °C) solvent hexane(1:4 w/v) was percolated continuously for 2 h.
2022年12月5日,英国剑桥大学的研究人员在" Nature "期刊发表了一篇题为" FXR inhibition may protect from SARS-CoV-2 infection by reducing ACE2 "的研究论文。该研究显示,熊去氧胆酸(UDCA)能够通过抑制FXR信号通路,下调ACE2的表达,研究人员对8名健康受试者使用了熊去氧胆酸,结果显示,8名志愿者的鼻腔细胞ACE2表达水平有所降低。从新冠病毒的感染路径来看,新冠病毒表面的刺突蛋白(Spike protein)能与人体细胞上的受体(ACE2)相结合,进而入侵人体,而ACE2表达下调后,新冠病毒与人体细胞无法结合,确实可达到预防新冠病毒感染的目的。在上述实验结果的基础之上,剑桥大学研究人员提出,熊去氧胆酸有潜力成为新冠预防用药,可作为疫苗接种的补充,消息一出,引起社会广泛关注。