Enhanced ethanol production at commercial scale from molasses using high gravity technology by mutant S. cerevisiae

Revista de microbiologia

Arshad, Muhammad¹  Hussain, Tariq² 

[1] College of Veterinary and Animal Sciences, Pakistan;The University of Lahore, Lahore, Pakistan

关键词: Very high gravity technology;    Ethanol;    Molasses;    Aeration;    Brix.;   

DOI  :  10.1016/j.bjm.2017.02.003

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Microbiologia / Brazilian Society for Microbiology

【 摘 要 】

Very high gravity (VHG) technology was employed on industrial scale to produce ethanol from molasses (fermented) as well as by-products formation estimation. The effect of different Brix° (32, 36 and 40) air-flow rates (0.00, 0.20, 0.40, and 0.60 vvm) was studied on ethanol production. The maximum ethanol production was recorded to be 12.2% (v/v) at 40 Brix° with 0.2 vvm air-flow rate. At optimum level aeration and 40 Brix° VHG, the residual sugar level was recorded in the range of 12.5-18.5 g/L, whereas the viable cell count remained constant up to 50 h of fermentation and dry matter production increased with fermentation time. Both water and steam consumption reduced significantly under optimum conditions of Brix° and aeration rate with compromising the ethanol production. Results revealed VHG with continuous air flow is viable technique to reduce the ethanol production cost form molasses at commercial scale.

【 授权许可】

CC BY-NC