Kanakaraju Yerra, Uma Addepally, Vani Gandham, Kiran Kumari Palety, Sridhar S, Umakanth A V
Centre for Biotechnology, IST, Jawaharlal Nehru Technological University Hyderabad, Kukatpally, Hyderabad, 500085, India.
CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India.
Bioprocess Biosyst Eng. 2020 Jul;43(7):1185-1194. doi: 10.1007/s00449-020-02313-9. Epub 2020 Mar 14.
1G ethanol from sweet sorghum can be a better alternative to various other sources used for its production. The commercial feasibility is dictated by the high sugar containing varieties, their transport to ethanol plants, storage and availability of robust yeast strains for the fermentation. Eight sweet sorghum cultivars namely CSV19SS, CSV24SS, CSV27, CSV32F, PV, SSV84, RVICSH, SPV1871, SSV74 were tested for their sugar content and varieties-SSV84 and CSV24SS were containing sugar content of 170-190 g/L. Specifically designed polyethersulfone-based ultrafiltration (UF) membrane and hydrophilised polyamide (HPA-150) also termed as nanofiltration (NF) membrane were synthesized by interfacial polymerization technique and were used for the concentration of sweet sorghum juice. The syrup retained on an average 90% sugars at 4 °C, 100% at - 20 °C for 6 months and 10% at room temperature for 36 h. The overall product yield of ethanol ranged between 0.48 and 0.49 g/g in batch fermentation in a 14 L reactor.
甜高粱制得的1G乙醇可能是其生产所用各种其他来源的更好替代品。商业可行性取决于高糖品种、它们向乙醇工厂的运输、储存以及用于发酵的健壮酵母菌株的可用性。对八个甜高粱品种，即CSV19SS、CSV24SS、CSV27、CSV32F、PV、SSV84、RVICSH、SPV1871、SSV74的含糖量进行了测试，其中SSV84和CSV24SS品种的含糖量为170 - 190克/升。通过界面聚合技术合成了专门设计的聚醚砜基超滤（UF）膜和亲水化聚酰胺（HPA - 150，也称为纳滤（NF）膜），并用于甜高粱汁的浓缩。该糖浆在4°C下平均保留90%的糖分，在 - 20°C下6个月保留100%，在室温下36小时保留10%。在14升反应器的分批发酵中，乙醇的总产品产率在0.48至0.49克/克之间。
