Correlation between bioactive lipids and novel coronavirus:constructive role of biolipids in curbing infectivity by enveloped viruses,centralizing on EPA and DHA

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)belongs to the family coronaviridae.It is spherical and possesses proteins called spikes,which can clamp onto the human cells.Once in close interaction with the human cells,these viruses undergo structural change and can fuse with the cell membrane.The virus enters the host and starts the process of translation and transcription in the cells and uncoated genome,respectively.Due to the rapid transmittable nature of the virus,extant actions should be taken.The fatty acids administrated orally,or intravenously,could help us gear things up in providing resistance and preventing infection.Hence,the multiplication of the virus could be hindered by arachidonic acid,eicosapentaenoic acid(EPA),and docosahexaenoic acid(DHA).In that context,the current review highlights the role of these unsaturated fatty acids and their derivatives such as lipoxins and resolvins in the inactivation of the enveloped coro-navirus disease 2019(COVID-19).

大米草浓酸水解及发酵生产生物燃料的初步研究

探讨了大米草浓酸水解的影响因素,采用正交试验优化得到了大米草最佳水解条件:硫酸质量分数为50%、水解时间为60 min、水浴温度为50℃、大米草粒径为10-20目、固液质量比为19∶,此时糖的得率达36%。利用基因工程菌6508-127发酵大米草水解液生产燃料酒精,产率为8.9 g/100 g(乙醇/大米草);利用圆红冬孢酵母As2.1389发酵大米草水解液生产生物油脂,产率为6.4 g/100 g(油脂/大米草)。

生物质裂解燃油对生物柴油低温流动性的改进研究

以生物油脂为原料,通过裂解和酯化两个反应过程分别生成3种新的生物油脂裂解燃油(大豆油裂解燃油SBPF、皂脚裂解燃油SSPF、地沟油裂解燃油HWPF)。将3种生物燃油以不同的添加量分别添加到脂肪酸甲酯类生物柴油中,研究其组成含量对低温流动性能的影响。结果表明:常规的生物柴油凝点和冷滤点分别为11℃和12℃,通过添加20%皂脚裂解燃油,可使其凝点和冷滤点分别降至4℃和7℃。通过差示扫描热量分析,可知调合后可略微降低油品的析蜡温度,并且其降凝效果符合共晶理论。通过析蜡结晶物的GC-MS分析验证,生物油脂裂解燃油的加入主要是改变结晶特性,而对析出的蜡晶的组成及其含量无影响。