Gevo announced that it has developed proprietary, breakthrough processes that converts either low-carbon isobutanol or low-value "
fusel oils," a mixture of alcohols that are byproducts from fermentation processes such as alcohol production, into renewable diesel.
It constitutes the significant portion of
fusel oil and is identified as ester among chamomile oil and other oils.
and control of temperature, "fruity" or "floral" notes appear due to the formation of esters and
fusel alcohols by non-Saccharomyces strains (NOGUEIRA et al., 2008; PIETROWSKI et al., 2012).
Liu, "Effect of
fusel oil addition on volatile compounds in papaya wine fermented with Williopsis saturnus var.
As the distillation continues, the temperature increases, and Karasz begins to notice some cloudiness in the spirits, signifying the presence of
fusel alcohols, known as "the tails." At this point he stops the distillation run.
Fusel oil, released into the water whenever coffee grounds are boiled, causes bitterness; however,
fusel oil is not released into water at less than boiling temperatures.
Dehydration of alcohols present in
fusel oil and its conversion to alkenes using a HZSM-5 zeolite
"The first [five] percent of the run, aka the foreshots or heads, contains large amounts of cogeners, or volatile chemical compounds such as acetone, aldehydes, esters, and
fusel oils." Gurstelle, supra note 14, at 61.
Cortes-Callejas, "Addition of protease during starch liquefaction affects free amino nitrogen,
fusel alcohols and ethanol production of fermented maize and whole and decorticated sorghum mashes," Biochemical Engineering Journal, vol.
W Wagener, "The influence of ester and
fusel alcohol content upon the quality of dry white wine," South African Journal of Agricultural Science, vol.